MB's Articles of Interest - May 2000

 

ARTICLE TITLE: Real-time three-dimensional echocardiography for measurement of left ventricular volumes.
ARTICLE SOURCE: Am J Cardiol (United States), Dec 15 1999, 84(12) p1434-9
AUTHOR(S): Schmidt MA; Ohazama CJ; Agyeman KO; Freidlin RZ; Jones M; Laurienzo JM; Brenneman CL; Arai AE; von Ramm OT; Panza JA
AUTHOR'S ADDRESS: Cardiology Branch, the Laboratory of Cardiac Energetics, and the Laboratory of Animal Medicine and Surgery, National Heart, Lung, and Blood Institute, the Center for Information Technology, Bethesda, Maryland, USA.
PUBLICATION TYPE: JOURNAL ARTICLE
ABSTRACT: Left ventricular (LV) volumes are important prognostic indexes in patients with heart disease. Although several methods can evaluate LV volumes, most have important intrinsic limitations. Real-time 3-dimensional echocardiography (RT3D echo) is a novel technique capable of instantaneous acquisition of volumetric images. The purpose of this study was to validate LV volume calculations with RT3D echo and to determine their usefulness in cardiac patients. To this end, 4 normal subjects and 21 cardiac patients underwent magnetic resonance imaging (MRI) and RT3D echo on the same day. A strong correlation was found between LV volumes calculated with MRI and with RT3D echo (r = 0.91; y = 20.1 + 0.71x; SEE 28 ml). LV volumes obtained with MRI were greater than those obtained with RT3D echo (126 +/- 83 vs 110 +/- 65 ml; p = 0.002), probably due to the fact that heart rate during MRI acquisition was lower than that during RT3D echo examination (62 +/- 11 vs 79 +/- 16 beats/min; p = 0.0001). Analysis of intra- and interobserver variability showed strong indexes of agreement in the measurement of LV volumes with RT3D echo. Thus, LV volume measurements with RT3D echo are accurate and reproducible. This technique expands the use of ultrasound for the noninvasive evaluation of cardiac patients and provides a new tool for the investigational study of cardiovascular disease.
MB. I wonder if 3 dimensional echos which even I could read will interfere with a new source of income.

ARTICLE TITLE: Lack of effect of increased inspired oxygen concentrations on maximal exercise capacity or ventilation in stable heart failure.
ARTICLE SOURCE: Am J Cardiol (United States), Dec 15 1999, 84(12) p1412-6
AUTHOR(S): Russell SD; Koshkarian GM; Medinger AE; Carson PE; Higginbotham MB
AUTHOR'S ADDRESS: Department of Medicine, Duke University Medical Center, Durham, North Carolina 27710, USA. russe016@mc.duke.edu.
PUBLICATION TYPE: CLINICAL TRIAL; JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
This study failed to demonstrate any physiologic or functional benefit from the administration of increased oxygen concentrations to patients with stable heart failure.

ARTICLE TITLE: Hemodynamic and functional consequences of radial artery removal for coronary artery bypass grafting.
ARTICLE SOURCE: Am J Cardiol (United States), Dec 1 1999, 84(11) p1353-6, A8
AUTHOR(S): Serricchio M; Gaudino M; Tondi P; Gasbarrini A; Gerardino L; Santoliquido A; Pola P; Possati G
AUTHOR'S ADDRESS: Department of Angiology, Catholic University, Rome, Italy.
PUBLICATION TYPE: JOURNAL ARTICLE
ABSTRACT: Five years after surgery the echo-Doppler characteristics of the forearm circulation and the transcutaneous oxygen and carbon dioxide pressures of the operated and control arm were determined at rest and under conditions of hand exercise in 34 patients who received a radial artery graft for myocardial revascularization. Doppler measurements showed the ulnar compensation to radial artery removal, and transcutaneous measurements demonstrated a moderate degree of exercise-induced hand ischemia on the operated site.

ARTICLE TITLE: Beta-adrenergic blocker mortality trials in congestive heart failure.
ARTICLE SOURCE: Am J Cardiol (United States), Nov 4 1999, 84(9A) p94R-102R
AUTHOR(S): Teerlink JR; Massie BM
AUTHOR'S ADDRESS: Section of Cardiology, San Francisco Veterans Affairs Medical Center, Cardiovascular Research Institute, University of California San Francisco, 94121-1545, USA.
PUBLICATION TYPE: JOURNAL ARTICLE; REVIEW (42 references); REVIEW, TUTORIAL
ABSTRACT: Many of the current discussions of beta-adrenergic blocker therapy in patients with congestive heart failure have used fairy tales to describe the evolution of this treatment from contraindication to standard of care. This article reviews the early studies that initiated this revolution in heart failure therapy and discusses the major mortality trials that have demonstrated that these agents improve survival and limit the progression of congestive heart failure. These major trials have used 1 of 4 beta blockers (metoprolol, bisoprolol, carvedilol, or bucindolol) in varying study designs with different patient populations. Each trial had different objectives and limitations, and these are described in the context of their impact on proving a survival benefit. In addition, the specific effect of beta-blocker therapy on sudden death in patients with heart failure is briefly discussed. The weight of these trials suggests that beta-adrenergic blocker therapy can save 1 life of every 35 patients treated in patients with mild-to-moderate heart failure. The data are compelling and the techniques for "starting low and going slow" with titrations have been well documented.

ARTICLE TITLE: Meta-analysis of antiarrhythmic drug trials.
ARTICLE SOURCE: Am J Cardiol (United States), Nov 4 1999, 84(9A) p90R-93R
AUTHOR(S): Connolly SJ
AUTHOR'S ADDRESS: Faculty of Health Sciences, McMaster University, Ontario, Canada.
PUBLICATION TYPE: JOURNAL ARTICLE; META-ANALYSIS
ABSTRACT: During the past 15 years, the efficacy of antiarrhythmic drugs has been investigated for reducing premature death in patients at high risk of arrhythmia. Whereas the benefits of beta-blocker therapy are well established, a reduction in mortality with other antiarrhythmic drugs remains unproved and in some cases, there is evidence of increased mortality with class I and some class III agents. A limitation of individual clinical trials is inadequate sample size to detect significant differences between interventions. Meta-analysis, by combining results from multiple clinical trials, provides a technique to overcome sample size limitations and assess the benefits and limitations of an intervention. Thirteen randomized clinical trials evaluated the role of prophylactic amiodarone in patients at risk of death from cardiac arrhythmias. Whereas 3 of these studies reported a reduction in mortality, several others revealed no benefits of amiodarone. Because neither trial was designed to detect reductions in total mortality, it remained unclear whether the beneficial effect of amiodarone on arrhythmic death and resuscitated ventricular fibrillation translated into a beneficial effect on total mortality. To address this, a meta-analysis was performed from the 13 trials of amiodarone in patients after an acute myocardial infarction or with congestive heart failure. The results showed a significant reduction in mortality and in arrhythmic death with amiodarone.

ARTICLE TITLE: Overview of trends in the control of cardiac arrhythmia: past and future.
ARTICLE SOURCE: Am J Cardiol (United States), Nov 4 1999, 84(9A) p3R-10R
AUTHOR(S): Singh BN
AUTHOR'S ADDRESS: Division of Cardiology, Veterans Administration Medical Center of West Los Angeles and University of California at Los Angeles, 90073, USA.
PUBLICATION TYPE: JOURNAL ARTICLE; REVIEW (53 references); REVIEW, TUTORIAL

ARTICLE TITLE: Alcohol consumption, coronary calcium, and coronary heart disease events.
ARTICLE SOURCE: Am J Cardiol (United States), Oct 1 1999, 84(7) p802-6
AUTHOR(S): Yang T; Doherty TM; Wong ND; Detrano RC
AUTHOR'S ADDRESS: Department of Medicine, Harbor-UCLA Medical Center, Torrance, California 90502-2064, USA.
PUBLICATION TYPE: JOURNAL ARTICLE
ABSTRACT: This study was performed to determine if alcohol intake was associated with reduced coronary risk in a high-risk asymptomatic population, and whether this effect was independent of coronary risk factors and coronary calcium. In 1,196 asymptomatic subjects with coronary risk factors, we assessed alcohol consumption history, performed risk factor measurements, and quantified coronary calcium with electron beam computed tomography. These subjects were then followed for a mean of 41 months, and coronary events (myocardial infarction or coronary death) were noted. Significant inverse predictors of coronary events included alcohol use and serum high-density lipoprotein cholesterol level. Direct predictors of events were history of systemic hypertension, smoking, diabetes mellitus, serum cholesterol, and coronary calcium score. Subjects with coronary calcium were 3.1 times more likely to suffer a coronary event than those without calcium (95% confidence interval [CI] limits 1.3 to 7.2). Subjects who drank alcohol had a relative risk of 0.3 (95% CI limits 0.2 to 0.6) for developing coronary events. After controlling for age, gender, and other risk factors with logistic regression, these differences in relative risk persisted (relative risk 0.58; 95% CI limits 0.41 to 0.82). Alcohol consumption is a significant inverse predictor of coronary events, comparable in magnitude to standard risk factors and to radiographically measured coronary calcium. This effect is independent of coronary risk factors and coronary calcium.

ARTICLE TITLE: Sexual activity and the cardiovascular patient: guidelines.
ARTICLE SOURCE: Am J Cardiol (United States), Sep 9 1999, 84(5B) p6N-10N
AUTHOR(S): Taylor HA Jr
AUTHOR'S ADDRESS: Department of Medicine, University of Mississippi Medical Center, Jackson 39213, USA.
PUBLICATION TYPE: JOURNAL ARTICLE; REVIEW (19 references); REVIEW, TUTORIAL

ARTICLE TITLE: Trends in coronary revascularization 1989 to 1997: the Bypass Angioplasty Revascularization Investigation (BARI) survey of procedures.
ARTICLE SOURCE: Am J Cardiol (United States), Jul 15 1999, 84(2) p157-61
AUTHOR(S): Holubkov R; Detre KM; Sopko G; Sutton-Tyrrell K; Kelsey SF; Frye RL
AUTHOR'S ADDRESS: Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pennsylvania 15261, USA. holubkov@edc.gsph.pitt.edu.
PUBLICATION TYPE: JOURNAL ARTICLE; MULTICENTER STUDY
ABSTRACT: Use of catheter-based and surgical coronary revascularization has steadily increased in North America. Introduction of catheter-based "new devices," including intracoronary stents, has expanded the range of patients who can be treated with percutaneous approaches. We sought to address trends in the practice of catheter-based and surgical coronary revascularization during 1989 to 1997. The 17 North American institutions participating in the NHLBI Bypass Angioplasty Revascularization Investigation (BARI) periodically completed a 5-working day survey of all surgical and catheter-based coronary revascularizations. Data collected included patient demographics, vessel disease, prior interventions, and use of new devices or minimally invasive surgical techniques. The proportion of all procedures that were catheter based (vs surgical) increased from 52.1% in 1989/1990 to 62.0% in 1997 (p <0.001). Among surgically treated patients, prevalence of prior bypass surgery decreased from 13.4% in 1989/1990 to 7.5% in 1997 (p <0.001). In 1997, 3% of surgical procedures used minimal incisions or were performed without cardiopulmonary bypass. Among patients undergoing catheter-based intervention, prevalence of left main disease increased from 2.2% to 5.7% (p <0.001), myocardial infarction within 24 hours increased from 2.4% to 9.7% (p <0.001), and prior bypass surgery increased from 16.2% to 20.8% (p = 0.056). Use of new devices increased from 11.6% of catheter-based procedures in 1990 to 67.0% in 1997 (p <0.001). Compared with the early 1990s, catheter-based revascularization is currently more commonly used for patients with acute myocardial infarction, prior bypass surgery, or severe left main narrowing. These trends are likely due to the proliferation of new devices, especially intracoronary stents, since the mid 1990s.

ARTICLE TITLE: Cardiopulmonary resuscitation during severe hypothermia in pigs: does epinephrine or vasopressin increase coronary perfusion pressure?
ARTICLE SOURCE: Anesth Analg (United States), Jan 2000, 90(1) p69-73
AUTHOR(S): Krismer AC; Lindner KH; Kornberger R; Wenzel V; Mueller G; Hund W; Oroszy S; Lurie KG; Mair P
AUTHOR'S ADDRESS: Department of Anesthesiology and Critical Care Medicine, Leopold-Franzens-University of Innsbruck, Austria. anette.krismer@uibk.ac.at.
MAJOR SUBJECT HEADING(S): Blood Pressure [drug effects]; Cardiopulmonary Resuscitation; Coronary Circulation [drug effects]; Epinephrine [therapeutic use]; Hypothermia [therapy]; Vasoconstrictor Agents [therapeutic use]; Vasopressins [therapeutic use]
MINOR SUBJECT HEADING(S): Body Temperature [drug effects] [physiology]; Heart Arrest [pathology]; Swine
INDEXING CHECK TAG(S): Animal; Female; Male; Support, Non-U.S. Gov't
PUBLICATION TYPE: JOURNAL ARTICLE
IMPLICATIONS: Our study was designed to assess the effects of vasopressin and epinephrine in a porcine model simulating cardiac arrest during severe hypothermia. This study demonstrates that the administration of both emergency drugs results in an increased perfusion pressure in the heart.

ARTICLE TITLE: Recovery of cognitive function after remifentanil-propofol anesthesia: a comparison with desflurane and sevoflurane anesthesia.
ARTICLE SOURCE: Anesth Analg (United States), Jan 2000, 90(1) p168-74
AUTHOR(S): Larsen B; Seitz A; Larsen R
AUTHOR'S ADDRESS: Department of Anesthesiology and Intensive Care Medicine, University of Saarland, Homburg/Saar, Germany.
PUBLICATION TYPE: CLINICAL TRIAL; JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
IMPLICATIONS: We compared awakening and intermediate recovery times after remifentanil-propofol anesthesia to desflurane-N2O and sevoflurane-N2O anesthesia. Emergence and return of cognitive function was significantly faster after remifentanil-propofol compared with desflurane and sevoflurane up to 60 min after anesthesia administration.

ARTICLE TITLE: Prolonged coma and quadriplegia after accidental subarachnoid injection of a local anesthetic with an opiate.
ARTICLE SOURCE: Anesth Analg (United States), Jan 2000, 90(1) p116-8
AUTHOR(S): Evron S; Krumholtz S; Wiener Y; Brohorov T; Bahar M
AUTHOR'S ADDRESS: Department of Anesthesiology, Assaf Harofeh Medical Center, Tel Aviv University, Israel.
PUBLICATION TYPE: JOURNAL ARTICLE

ARTICLE TITLE: The pain visual analog scale: is it linear or nonlinear?
ARTICLE SOURCE: Anesth Analg (United States), Dec 1999, 89(6) p1517-20
AUTHOR(S): Myles PS; Troedel S; Boquest M; Reeves M
AUTHOR'S ADDRESS: Department of Anaesthesia and Pain Management, Alfred Hospital, Prahan, Victoria, Australia. p.myles@alfred.org.au.
PUBLICATION TYPE: CLINICAL TRIAL; JOURNAL ARTICLE
ABSTRACT: The visual analog scale (VAS) is a tool widely used to measure pain, yet controversy surrounds whether the VAS score is ratio or ordinal data. We studied 52 postoperative patients and measured their pain intensity using the VAS. We then asked them to consider different amounts of pain (conceptually twice as much and then half as much) and asked them to repeat their VAS rating after each consideration (VAS2 and VAS3, respectively). Patients with unrelieved pain had their pain treated with IV fentanyl and were then asked to rate their pain intensity when they considered they had half as much pain. We compared the baseline VAS (VAS1) with VAS2 and VAS3. The mean (95% confidence interval) for VAS2:1 was 2.12 (1.81-2.43) and VAS3:1 was 0.45 (0.38-0.52). We conclude that the VAS is linear for mild-to-moderate pain, and the VAS score can be treated as ratio data. IMPLICATIONS: A change in the visual analog scale score represents a relative change in the magnitude of pain sensation. Use of the VAS in comparative analgesic trials can now meaningfully quantify differences in potency and efficacy.

ARTICLE TITLE: Renin angiotensin system antagonists and anesthesia.
ARTICLE SOURCE: Anesth Analg (United States), Nov 1999, 89(5) p1143-55
AUTHOR(S): Colson P; Ryckwaert F; Coriat P
AUTHOR'S ADDRESS: Department of Anesthesiology and Intensive Care, Montpellier University Hospital, Montpellier, France.
PUBLICATION TYPE: JOURNAL ARTICLE; REVIEW (161 references); REVIEW, ACADEMIC

ARTICLE TITLE: Percutaneous versus surgical tracheostomy: a double-blind randomized trial.
ARTICLE SOURCE: Ann Surg (United States), Nov 1999, 230(5) p708-14
AUTHOR(S): Gysin C; Dulguerov P; Guyot JP; Perneger TV; Abajo B; Chevrolet JC
AUTHOR'S ADDRESS: Department of Otolaryngology-Head and Neck Surgey, Geneva University Hospital, Switzerland.
PUBLICATION TYPE: CLINICAL TRIAL; JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
ABSTRACT: OBJECTIVE: To compare surgical (SgT) and percutaneous (PcT) tracheostomies. BACKGROUND: Percutaneous tracheostomy has been said to provide numerous advantages over classical SgT. METHODS: A prospective randomized trial with a double-blind evaluation was used to compare SgT and PcT. SgT and PcT were performed according to established techniques (n = 70). The procedure was performed at the bedside in the intensive care unit in 21 cases (30%). The outcome measures were divided into procedure-related variables, perioperative complications, and postoperative complications. The procedure-related variables (location, duration, and difficulty) were evaluated by the surgeon. The perioperative and postoperative complications were divided into serious, intermediate, and minor. Perioperative and early postoperative (14 days) complications were evaluated daily by an intensive care unit nurse blinded to the technique used. Long-term postoperative complications were evaluated 3 months after decannulation by a surgeon blinded to the surgical technique. RESULTS: There were no major complications in either group. Most variables studied were not statistically different between the PcT and SgT groups. The only variables to reach statistical significance were the size of the incision (smaller with PcT, p < 0.0001), minor perioperative complications (greater with PcT, p = 0.02), and difficult cannula changes (greater with PcT; p < 0.05). Among nonsignificant differences, difficult procedures and false passages were more frequent with PcT, whereas long-term unesthetic scars were more frequent with SgT. CONCLUSIONS: Both techniques are associated with a low rate of serious or intermediate complications when performed by experienced surgeons. There were more minor perioperative complications with PcT and more minor long term complications with SgT.
MB. Another study was not agree with this. Percutaneous dilatational tracheostomy: still a surgical procedure.
ARTICLE SOURCE: Am Surg (United States), Oct 1999, 65(10) p982-6
Based on the experience to date, Cedars-Sinai Medical Center (Los Angeles, CA) continues to require a surgeon privileged to perform OT to participate in all PDT procedures.

ARTICLE TITLE: Epidural anesthesia in infants [editorial]
ARTICLE SOURCE: Can J Anaesth (Canada), Dec 1999, 46(12) p1105-9
AUTHOR(S): Desparmet JF
PUBLICATION TYPE: EDITORIAL

ARTICLE TITLE: Thoracic epidural analgesia via the caudal approach using nerve stimulation in an infant with CATCH22.
ARTICLE SOURCE: Can J Anaesth (Canada), Dec 1999, 46(12) p1138-42
AUTHOR(S): Tsui BC; Seal R; Entwistle L
AUTHOR'S ADDRESS: Department of Anesthesiology and Pain Medicine, University of Alberta Hospitals, Walter Mackenzie Health Sciences Centre, Edmonton, Canada. btsui@pop.srv.ualberta.ca.
PUBLICATION TYPE: JOURNAL ARTICLE
CONCLUSION: Epidural stimulation may help placement of the epidural catheter at the appropriate dermatome for effective anesthesia and analgesia.

ARTICLE TITLE: Improved efficiency of hypervolemic therapy with inhibition of natriuresis by fludrocortisone in patients with aneurysmal subarachnoid hemorrhage.
ARTICLE SOURCE: J Neurosurg (United States), Dec 1999, 91(6) p947-52
AUTHOR(S): Mori T; Katayama Y; Kawamata T; Hirayama T
AUTHOR'S ADDRESS: Department of Neurological Surgery, Nihon University School of Medicine, Tokyo, Japan.

ARTICLE TITLE: Secondary abdominal compartment syndrome: an underappreciated manifestation of severe hemorrhagic shock.
ARTICLE SOURCE: J Trauma (United States), Dec 1999, 47(6) p995-9
AUTHOR(S): Maxwell RA; Fabian TC; Croce MA; Davis KA
AUTHOR'S ADDRESS: Department of Surgery, Presley Regional Trauma Center, Memphis, Tennessee, USA.
PUBLICATION TYPE: JOURNAL ARTICLE
.On the basis of these observations, we recommend that bladder pressures should be routinely checked and acted on appropriately when resuscitation volumes approach 10 liters of crystalloid or 10 units of packed red cells.

ARTICLE TITLE: Effect of increased renal venous pressure on renal function.
ARTICLE SOURCE: J Trauma (United States), Dec 1999, 47(6) p1000-3
AUTHOR(S): Doty JM; Saggi BH; Sugerman HJ; Blocher CR; Pin R; Fakhry I; Gehr TW; Sica DA
AUTHOR'S ADDRESS: Department of Surgery, Medical College of Virginia of Virginia Commonwealth University, Richmond, USA.
PUBLICATION TYPE: JOURNAL ARTICLE
CONCLUSION: Elevated renal vein pressure (RVP) alone leads to decreased renal artery blood flow and glomerular filtration rate and increased plasma renin activity, serum aldosterone, and urinary protein leak. These changes are consistent with the renal pathophysiology seen in acute abdominal compartment syndrome (AACS), morbid obesity, and preeclampsia. The changes are partially or completely reversed by decreasing renal venous pressure as occurs with abdominal decompression for AACS.

ARTICLE TITLE: Bedside carbon dioxide (CO2) preinsertion cavagram for inferior vena cava filter placement: case report.
ARTICLE SOURCE: J Trauma (United States), Dec 1999, 47(6) p1140-1
AUTHOR(S): Sing RF; Stackhouse DJ; Cicci CK; Le Quire MH
AUTHOR'S ADDRESS: Department of Surgery, Carolinas Medical Center, Charlotte, North Carolina, USA. rsing@carolinas.org.
PUBLICATION TYPE: JOURNAL ARTICLE

ARTICLE TITLE: Bedside insertion of inferior vena cava filters in the intensive care unit.
ARTICLE SOURCE: J Trauma (United States), Dec 1999, 47(6) p1104-7
AUTHOR(S): Sing RF; Cicci CK; Smith CH; Messick WJ
AUTHOR'S ADDRESS: Department of Surgery, Carolinas Medical Center, Charlotte, North Carolina 28203, USA. rsing@carolinas.org.
MAJOR SUBJECT HEADING(S): Catheterization, Central Venous [methods]; Fluoroscopy [methods]; Intensive Care Units; Multiple Trauma [complications]; Point-of-Care Systems; Radiography, Interventional [methods]; Thromboembolism [etiology] [prevention & control]; Vena Cava, Inferior [radiography]
MINOR SUBJECT HEADING(S): Adolescence; Adult; Aged; Algorithms; Catheterization, Central Venous [adverse effects] [instrumentation]; Decision Trees; Fluoroscopy [adverse effects] [instrumentation]; Middle Age; Patient Selection; Practice Guidelines; Prospective Studies; Radiography, Interventional [adverse effects] [instrumentation]; Risk Factors; Treatment Outcome
INDEXING CHECK TAG(S): Female; Human; Male
PUBLICATION TYPE: JOURNAL ARTICLE
CONCLUSION: Bedside inferior vena cava filter (IVCF) insertion with a preinsertion cavagram is a percutaneous procedure that can be safely performed in the ICU. Bedside insertion of IVCF avoids the potential complications of transporting critically ill patients and may reduce costs.

ARTICLE TITLE: Screening for prostate cancer. The challenge of promoting informed decision making in the absence of definitive evidence of effectiveness.
ARTICLE SOURCE: Med Clin North Am (United States), Nov 1999, 83(6) p1423-42, vi
AUTHOR(S): Burack RC; Wood DP Jr
AUTHOR'S ADDRESS: Department of Internal Medicine, Wayne State University School of Medicine, Detroit, Michigan, USA.
PUBLICATION TYPE: JOURNAL ARTICLE; REVIEW (57 references); REVIEW, TUTORIAL
ABSTRACT: Evidence demonstrating the burden of prostate cancer upon men in the United States is incontrovertible; less compelling, however, is proof of benefit from early detection efforts. Nevertheless, the absence of definitive evidence does not lessen the interest of men in prostate testing or the obligation of physicians to help interested men make well-informed decisions, which integrate personal circumstance and preference with the best available data. This article provides the counseling physician with the information required to frame the current prostate testing debate and an approach to support informed decision making by men who can benefit from their assistance.

ARTICLE TITLE: Colorectal cancer screening.
ARTICLE SOURCE: Med Clin North Am (United States), Nov 1999, 83(6) p1403-22, vi
AUTHOR(S): Helm JF; Sandler RS
AUTHOR'S ADDRESS: Department of Medicine, University of South Florida, Tampa, USA.
PUBLICATION TYPE: JOURNAL ARTICLE; REVIEW (86 references); REVIEW, TUTORIAL
ABSTRACT: Colorectal cancer is an important problem in the United States, with over 130,000 new cases and 55,000 deaths each year. There is now strong evidence that screening for colorectal cancer with fecal occult blood testing can decrease mortality, and additional evidence that removing benign adenomas can decrease cancer incidence. Evidence-based screening guidelines depend on colorectal cancer risk. Individuals at higher risk because of a personal or family history deserve more intensive screening than asymptomatic individuals over age 50.

ARTICLE TITLE: Principles of screening.
ARTICLE SOURCE: Med Clin North Am (United States), Nov 1999, 83(6) p1323-37, v
AUTHOR(S): Nielsen C; Lang RS
AUTHOR'S ADDRESS: Department of General Internal Medicine, Cleveland Clinic Foundation, Ohio, USA.
PUBLICATION TYPE: JOURNAL ARTICLE; REVIEW (31 references); REVIEW, TUTORIAL

ARTICLE TITLE: Rethinking the role of tube feeding in patients with advanced dementia.
ARTICLE SOURCE: N Engl J Med (United States), Jan 20 2000, 342(3) p206-10
AUTHOR(S): Gillick MR
AUTHOR'S ADDRESS: Hebrew Rehabilitation Center for Aged, Boston, MA 02131, USA.
PUBLICATION TYPE: JOURNAL ARTICLE

ARTICLE TITLE: ACE inhibition in cardiovascular disease [editorial; comment]
COMMENTS: Comment on: N Engl J Med 2000 Jan 20; 342(3):145-53
ARTICLE SOURCE: N Engl J Med (United States), Jan 20 2000, 342(3) p201-2
AUTHOR(S): Francis GS
PUBLICATION TYPE: COMMENT; EDITORIAL

ARTICLE TITLE: More preoperative assessment by physicians and less by laboratory tests [editorial; comment]
COMMENTS: Comment on: N Engl J Med 2000 Jan 20; 342(3):168-75
ARTICLE SOURCE: N Engl J Med (United States), Jan 20 2000, 342(3) p204-5
AUTHOR(S): Roizen MF
PUBLICATION TYPE: COMMENT; EDITORIAL

ARTICLE TITLE: Supplemental perioperative oxygen to reduce the incidence of surgical-wound infection. Outcomes Research Group [see comments]
COMMENTS: Comment in: N Engl J Med 2000 Jan 20; 342(3):202-4
ARTICLE SOURCE: N Engl J Med (United States), Jan 20 2000, 342(3) p161-7
AUTHOR(S): Greif R; Akca O; Horn EP; Kurz A; Sessler DI
AUTHOR'S ADDRESS: Department of Anesthesiology and Intensive Care Medicine, Donauspital, Vienna, Austria.
PUBLICATION TYPE: CLINICAL TRIAL; JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
ABSTRACT: BACKGROUND: Destruction by oxidation, or oxidative killing, is the most important defense against surgical pathogens and depends on the partial pressure of oxygen in contaminated tissue. An easy method of improving oxygen tension in adequately perfused tissue is to increase the concentration of inspired oxygen. We therefore tested the hypothesis that the supplemental administration of oxygen during the perioperative period decreases the incidence of wound infection. METHODS: We randomly assigned 500 patients undergoing colorectal resection to receive 30 percent or 80 percent inspired oxygen during the operation and for two hours afterward. Anesthetic treatment was standardized, and all patients received prophylactic antibiotic therapy. With use of a double-blind protocol, wounds were evaluated daily until the patient was discharged and then at a clinic visit two weeks after surgery. We considered wounds with culture-positive pus to be infected. The timing of suture removal and the date of discharge were determined by the surgeon, who did not know the patient's treatment-group assignment. RESULTS: Arterial oxygen saturation was normal in both groups; however, the arterial and subcutaneous partial pressure of oxygen was significantly higher in the patients given 80 percent oxygen than in those given 30 percent oxygen. Among the 250 patients who received 80 percent oxygen, 13 (5.2 percent; 95 percent confidence interval, 2.4 to 8.0 percent) had surgical-wound infections, as compared with 28 of the 250 patients given 30 percent oxygen (11.2 percent; 95 percent confidence interval, 7.3 to 15.1 percent; P=0.01). The absolute difference between groups was 6.0 percent (95 percent confidence interval, 1.2 to 10.8 percent). The duration of hospitalization was similar in the two groups. CONCLUSIONS: The perioperative administration of supplemental oxygen is a practical method of reducing the incidence of surgical-wound infections.

ARTICLE TITLE: Prevention of surgical-wound infections [editorial; comment]
COMMENTS: Comment on: N Engl J Med 2000 Jan 20; 342(3):161-7
ARTICLE SOURCE: N Engl J Med (United States), Jan 20 2000, 342(3) p202-4
AUTHOR(S): Gottrup F
PUBLICATION TYPE: COMMENT; EDITORIAL

ARTICLE TITLE: Effects of an angiotensin-converting-enzyme inhibitor, ramipril, on cardiovascular events in high-risk patients. The Heart Outcomes Prevention Evaluation Study Investigators [see comments]
COMMENTS: Comment in: N Engl J Med 2000 Jan 20; 342(3):201-2
ARTICLE SOURCE: N Engl J Med (United States), Jan 20 2000, 342(3) p145-53
AUTHOR(S): Yusuf S; Sleight P; Pogue J; Bosch J; Davies R; Dagenais G
AUTHOR'S ADDRESS: Canadian Cardiovascular Collaboration Project Office, Hamilton General Hospital, McMaster University, ON. hope@ccc.mcmaster.ca.
PUBLICATION TYPE: CLINICAL TRIAL; JOURNAL ARTICLE; MULTICENTER STUDY; RANDOMIZED CONTROLLED TRIAL
CONCLUSIONS: Ramipril significantly reduces the rates of death, myocardial infarction, and stroke in a broad range of high-risk patients who are not known to have a low ejection fraction or heart failure.

ARTICLE TITLE: ACE inhibition in cardiovascular disease [editorial; comment]
COMMENTS: Comment on: N Engl J Med 2000 Jan 20; 342(3):145-53
ARTICLE SOURCE: N Engl J Med (United States), Jan 20 2000, 342(3) p201-2
AUTHOR(S): Francis GS
PUBLICATION TYPE: COMMENT; EDITORIAL

ARTICLE TITLE: The effect of the volume of procedures at transplantation centers on mortality after liver transplantation.
ARTICLE SOURCE: N Engl J Med (United States), Dec 30 1999, 341(27) p2049-53
AUTHOR(S): Edwards EB; Roberts JP; McBride MA; Schulak JA; Hunsicker LG
AUTHOR'S ADDRESS: United Network for Organ Sharing, Richmond, VA, USA.
PUBLICATION TYPE: JOURNAL ARTICLE
ABSTRACT: BACKGROUND AND METHODS: For many complex surgical procedures there is an association between a low volume of procedures and an increased risk of death for the patients who undergo the procedures. We examined the effect of the volume of procedures at transplantation centers on the risk of death after liver transplantation. We analyzed all liver transplantations performed in the United States between October 1, 1987, and April 30, 1994. Because the results for 1987 to 1991 were largely similar to those from 1992 to 1994, we focused on the more recent period. RESULTS: Between January 1, 1992, and April 30, 1994, 47 centers performed 20 or fewer liver transplantations each per year (total, 837 transplantations) and were designated low-volume centers, and 52 centers performed more than 20 transplantations each per year (total, 6526) and were designated high-volume centers. The one-year mortality rate for the low-volume centers was 25.9 percent, as compared with 20.0 percent for the high-volume centers. Thirteen centers, all of which had low volumes, had one-year mortality rates of more than 40 percent. Low-volume centers that were affiliated with high-volume centers, such as pediatric transplantation programs, had results similar to those of the high-volume centers. The one-year mortality rate at unaffiliated low-volume centers was 28.3 percent, as compared with a rate of 20.1 percent for the group of all high-volume centers plus affiliated low-volume centers (P<0.001). CONCLUSIONS: As a group, liver-transplantation centers in the United States that perform 20 or fewer transplantations per year have mortality rates that are significantly higher than those at centers that perform more than 20 transplantations per year. Information regarding the outcome of liver transplantation at transplantation centers should be made widely available to the public in a timely manner.
MB We are about twice that.

ARTICLE TITLE: Improved clinical outcome after widespread use of coronary-artery stenting in Canada [see comments]
COMMENTS: Comment in: N Engl J Med 1999 Dec 23; 341(26):2005-6
ARTICLE SOURCE: N Engl J Med (United States), Dec 23 1999, 341(26) p1957-65
AUTHOR(S): Rankin JM; Spinelli JJ; Carere RG; Ricci DR; Penn IM; Hilton JD; Henderson MA; Hayden RI; Buller CE
AUTHOR'S ADDRESS: Vancouver General Hospital, British Columbia, Canada.
PUBLICATION TYPE: JOURNAL ARTICLE
CONCLUSIONS: The need for target-vessel revascularization during one year of follow-up decreased after percutaneous coronary intervention during the mid-1990s. The reduction was coincident with the introduction and subsequent widespread use of coronary stenting.

ARTICLE TITLE: Coronary angioplasty with or without stent implantation for acute myocardial infarction. Stent Primary Angioplasty in Myocardial Infarction Study Group [see comments]
COMMENTS: Comment in: N Engl J Med 1999 Dec 23; 341(26):2005-6
ARTICLE SOURCE: N Engl J Med (United States), Dec 23 1999, 341(26) p1949-56
AUTHOR(S): Grines CL; Cox DA; Stone GW; Garcia E; Mattos LA; Giambartolomei A; Brodie BR; Madonna O; Eijgelshoven M; Lansky AJ; O'Neill WW; Morice MC
AUTHOR'S ADDRESS: Division of Cardiology, William Beaumont Hospital, Royal Oak, Mich 48073-6769, USA.
PUBLICATION TYPE: CLINICAL TRIAL; JOURNAL ARTICLE; MULTICENTER STUDY; RANDOMIZED CONTROLLED TRIAL
CONCLUSIONS: In patients with acute myocardial infarction, routine implantation of a stent has clinical benefits beyond those of primary coronary angioplasty alone.

ARTICLE TITLE: Coronary stents--have they fulfilled their promise? [editorial; comment]
COMMENTS: Comment on: N Engl J Med 1999 Dec 23; 341(26):1949-56; Comment on: N Engl J Med 1999 Dec 23; 341(26):1957-65
ARTICLE SOURCE: N Engl J Med (United States), Dec 23 1999, 341(26) p2005-6
AUTHOR(S): Jacobs AK
PUBLICATION TYPE: COMMENT; EDITORIAL

ARTICLE TITLE: A randomized study of the prevention of sudden death in patients with coronary artery disease. Multicenter Unsustained Tachycardia Trial Investigators.
ARTICLE SOURCE: N Engl J Med (United States), Dec 16 1999, 341(25) p1882-90
AUTHOR(S): Buxton AE; Lee KL; Fisher JD; Josephson ME; Prystowsky EN; Hafley G
AUTHOR'S ADDRESS: Department of Medicine, Brown University School of Medicine and Rhode Island Hospital, Providence 02905, USA.
PUBLICATION TYPE: CLINICAL TRIAL; JOURNAL ARTICLE; MULTICENTER STUDY; RANDOMIZED CONTROLLED TRIAL
CONCLUSIONS: Electrophysiologically guided antiarrhythmic therapy with implantable defibrillators, but not with antiarrhythmic drugs, reduces the risk of sudden death in high-risk patients with coronary disease.

ARTICLE TITLE: Reducing cardiac risk in noncardiac surgery [editorial; comment]
COMMENTS: Comment on: N Engl J Med 1999 Dec 9; 341(24):1789-94
ARTICLE SOURCE: N Engl J Med (United States), Dec 9 1999, 341(24) p1838-40
AUTHOR(S): Lee TH
PUBLICATION TYPE: COMMENT; EDITORIAL

ARTICLE TITLE: The effect of bisoprolol on perioperative mortality and myocardial infarction in high-risk patients undergoing vascular surgery. Dutch Echocardiographic Cardiac Risk Evaluation Applying Stress Echocardiography Study Group [see comments]
COMMENTS: Comment in: N Engl J Med 1999 Dec 9; 341(24):1838-40
ARTICLE SOURCE: N Engl J Med (United States), Dec 9 1999, 341(24) p1789-94
AUTHOR(S): Poldermans D; Boersma E; Bax JJ; Thomson IR; van de Ven LL; Blankensteijn JD; Baars HF; Yo TI; Trocino G; Vigna C; Roelandt JR; van Urk H
AUTHOR'S ADDRESS: Erasmus Medical Center, Rotterdam, The Netherlands.
PUBLICATION TYPE: CLINICAL TRIAL; JOURNAL ARTICLE; MULTICENTER STUDY; RANDOMIZED CONTROLLED TRIAL
ABSTRACT: BACKGROUND: Cardiovascular complications are the most important causes of perioperative morbidity and mortality among patients undergoing major vascular surgery. METHODS: We performed a randomized, multicenter trial to assess the effect of perioperative blockade of beta-adrenergic receptors on the incidence of death from cardiac causes and nonfatal myocardial infarction within 30 days after major vascular surgery in patients at high risk for these events. High-risk patients were identified by the presence of both clinical risk factors and positive results on dobutamine echocardiography. Eligible patients were randomly assigned to receive standard perioperative care or standard care plus perioperative beta-blockade with bisoprolol. RESULTS: A total of 1351 patients were screened, and 846 were found to have one or more cardiac risk factors. Of these 846 patients, 173 had positive results on dobutamine echocardiography. Fifty-nine patients were randomly assigned to receive bisoprolol, and 53 to receive standard care. Fifty-three patients were excluded from randomization because they were already taking a beta-blocker, and eight were excluded because they had extensive wall-motion abnormalities either at rest or during stress testing. Two patients in the bisoprolol group died of cardiac causes (3.4 percent), as compared with nine patients in the standard-care group (17 percent, P=0.02). Nonfatal myocardial infarction occurred in nine patients given standard care only (17 percent) and in none of those given standard care plus bisoprolol (P<0.001). Thus, the primary study end point of death from cardiac causes or nonfatal myocardial infarction occurred in 2 patients in the bisoprolol group (3.4 percent) and 18 patients in the standard-care group (34 percent, P<0.001). CONCLUSIONS: Bisoprolol reduces the perioperative incidence of death from cardiac causes and nonfatal myocardial infarction in high-risk patients who are undergoing major vascular surgery.

ARTICLE TITLE: Comparison of mortality in all patients on dialysis, patients on dialysis awaiting transplantation, and recipients of a first cadaveric transplant [see comments]
COMMENTS: Comment in: N Engl J Med 1999 Dec 2; 341(23):1762-3
ARTICLE SOURCE: N Engl J Med (United States), Dec 2 1999, 341(23) p1725-30
AUTHOR(S): Wolfe RA; Ashby VB; Milford EL; Ojo AO; Ettenger RE; Agodoa LY; Held PJ; Port FK
AUTHOR'S ADDRESS: U.S. Renal Data System Coordinating Center, Department of Biostatistics, University of Michigan, Ann Arbor 48103, USA. bobwolfe@umich.edu.
PUBLICATION TYPE: JOURNAL ARTICLE
CONCLUSIONS: Among patients with end-stage renal disease, healthier patients are placed on the waiting list for transplantation, and long-term survival is better among those on the waiting list who eventually undergo transplantation.

ARTICLE TITLE: A survival advantage for renal transplantation [editorial; comment]
COMMENTS: Comment on: N Engl J Med 1999 Dec 2; 341(23):1725-30
ARTICLE SOURCE: N Engl J Med (United States), Dec 2 1999, 341(23) p1762-3
AUTHOR(S): Hunsicker LG
PUBLICATION TYPE: COMMENT; EDITORIAL

ARTICLE TITLE: Quality and equity in dialysis and renal transplantation [editorial]
ARTICLE SOURCE: N Engl J Med (United States), Nov 25 1999, 341(22) p1691-3
AUTHOR(S): Levinsky NG
PUBLICATION TYPE: EDITORIAL

ARTICLE TITLE: Pathogenesis of inherited forms of dilated cardiomyopathy [editorial; comment]
COMMENTS: Comment on: N Engl J Med 1999 Dec 2; 341(23):1715-24
ARTICLE SOURCE: N Engl J Med (United States), Dec 2 1999, 341(23) p1759-62
AUTHOR(S): Graham RM; Owens WA

ARTICLE TITLE: A comparison of virtual and conventional colonoscopy for the detection of colorectal polyps [see comments]
COMMENTS: Comment in: N Engl J Med 1999 Nov 11; 341(20):1540-2
ARTICLE SOURCE: N Engl J Med (United States), Nov 11 1999, 341(20) p1496-503
AUTHOR(S): Fenlon HM; Nunes DP; Schroy PC 3rd; Barish MA; Clarke PD; Ferrucci JT
AUTHOR'S ADDRESS: Department of Radiology, Boston University School of Medicine, Boston Medical Center, MA 02118, USA.
PUBLICATION TYPE: CLINICAL TRIAL; JOURNAL ARTICLE
CONCLUSIONS: In a group of patients at high risk for colorectal neoplasia, virtual and conventional colonoscopy had similar efficacy for the detection of polyps that were 6 mm or more in diameter.

ARTICLE TITLE: Virtual colonoscopy--promising, but not ready for widespread use [editorial; comment]
COMMENTS: Comment on: N Engl J Med 1999 Nov 11; 341(20):1496-03
ARTICLE SOURCE: N Engl J Med (United States), Nov 11 1999, 341(20) p1540-2
AUTHOR(S): Bond JH
PUBLICATION TYPE: COMMENT; EDITORIAL

ARTICLE TITLE: Calcium-antagonist drugs.
ARTICLE SOURCE: N Engl J Med (United States), Nov 4 1999, 341(19) p1447-57
AUTHOR(S): Abernethy DR; Schwartz JB
AUTHOR'S ADDRESS: Division of Clinical Pharmacolgy, Georgetown University Medical Center, Washington, DC, USA. abernethyd@grc.nia.nih.gov.
PUBLICATION TYPE: JOURNAL ARTICLE; REVIEW (102 references); REVIEW, TUTORIAL

ARTICLE TITLE: The economic implications of HLA matching in cadaveric renal transplantation [see comments]
COMMENTS: Comment in: N Engl J Med 1999 Nov 4; 341(19):1468-9
ARTICLE SOURCE: N Engl J Med (United States), Nov 4 1999, 341(19) p1440-6
AUTHOR(S): Schnitzler MA; Hollenbeak CS; Cohen DS; Woodward RS; Lowell JA; Singer GG; Tesi RJ; Howard TK; Mohanakumar T; Brennan DC
AUTHOR'S ADDRESS: Pharmaco-economic Transplant Research, Health Administration Program, Washington University School of Medicine, St. Louis, MO 63110, USA. schnitz@wueconc.wustl.edu.
PUBLICATION TYPE: JOURNAL ARTICLE
CONCLUSIONS: Transplantation of better-matched cadaveric kidneys could have substantial economic advantages. In our simulations, HLA-based allocation of kidneys at the local level produced the largest estimated cost savings, when the duration of cold ischemia was taken into account. No additional savings were estimated to result from a national allocation program, because the additional costs of longer cold ischemia time were greater than the advantages of optimizing HLA matching.

ARTICLE TITLE: Long-term benefit of primary angioplasty as compared with thrombolytic therapy for acute myocardial infarction [see comments]
COMMENTS: Comment in: N Engl J Med 1999 Nov 4; 341(19):1464-5
ARTICLE SOURCE: N Engl J Med (United States), Nov 4 1999, 341(19) p1413-9
AUTHOR(S): Zijlstra F; Hoorntje JC; de Boer MJ; Reiffers S; Miedema K; Ottervanger JP; van'THof AW; Suryapranata H
AUTHOR'S ADDRESS: Department of Cardiology, Hospital De Weezenlanden, Zwolle, The Netherlands. v.derks@diagram-zwolle.nl.
PUBLICATION TYPE: CLINICAL TRIAL; JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
CONCLUSIONS: During five years of follow-up, primary coronary angioplasty for acute myocardial infarction was associated with lower rates of early and late death and nonfatal reinfarction, fewer hospital readmissions for ischemia or heart failure, and lower total medical charges than treatment with intravenous streptokinase.

ARTICLE TITLE: A comparison of osteopathic spinal manipulation with standard care for patients with low back pain [see comments]
COMMENTS: Comment in: N Engl J Med 1999 Nov 4; 341(19):1465-8
ARTICLE SOURCE: N Engl J Med (United States), Nov 4 1999, 341(19) p1426-31
AUTHOR(S): Andersson GB; Lucente T; Davis AM; Kappler RE; Lipton JA; Leurgans S
AUTHOR'S ADDRESS: Department of Orthopedic Surgery, Rush-Presbyterian-St. Luke's Medical Center, Chicago, IL 60612, USA. ganderss@rush.edu.
PUBLICATION TYPE: CLINICAL TRIAL; JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
CONCLUSIONS: Osteopathic manual care and standard medical care had similar clinical results in patients with subacute low back pain. However, the use of medication was greater with standard care.

ARTICLE TITLE: New options for the prevention of influenza [editorial; comment]
COMMENTS: Comment on: N Engl J Med 1999 Oct 28; 341(18):1336-43
ARTICLE SOURCE: N Engl J Med (United States), Oct 28 1999, 341(18) p1387-8
AUTHOR(S): Cox NJ; Hughes JM
PUBLICATION TYPE: COMMENT; EDITORIAL

ARTICLE TITLE: Presidential address: toward physician competency.
ARTICLE SOURCE: Surgery (United States), Oct 1999, 126(4) p589-93
AUTHOR(S): Nahrwold DL
AUTHOR'S ADDRESS: Department of Surgery, Northwestern University Medical School, Chicago, Ill, USA.
PUBLICATION TYPE: ADDRESSES

ARTICLE TITLE: Managed care and the ethics of regulation.
ARTICLE SOURCE: J Med Philos (Netherlands), Oct 1999, 24(5) p492-517
AUTHOR(S): De Ville KA
AUTHOR'S ADDRESS: Department of Medical Humanities, School of Medicine, East Carolina University, Greenville, North Carolina 27858-4354, USA.
PUBLICATION TYPE: JOURNAL ARTICLE
ABSTRACT: The dramatic appearance of managed care organizations (MCOs) on the U.S. health scene has generated tremendous anxiety among health care providers and patients. These fears are based on the belief that managed care techniques pose greater risks of under treatment than do fee-for-service modes of payment. In addition, many physicians and patients resent the limits placed on clinical autonomy by the MCO model and the stresses that it places on the traditional physician-patient relationship. These misgivings have been exacerbated by the mostly negative response to MCOs in the media and academia. Legislatures have responded to these claims and public fears with a wave of regulatory initiatives. Some of these regulations are attempts to protect patients. Others, however, are motivated primarily by antipathy toward the concept of managed care itself. This essay is an attempt to develop a social ethic of regulation and argues that the sole reason that private enterprise may be justifiably limited is when it presents a risk of harm to others or society. While some regulation and proposed regulation of MCOs meet this standard, much legislation represents an unjustified attempt to limit or handicap otherwise legal behavior merely because a segment of the population and medical profession find it aesthetically unpleasing and oppose its approach to the delivery of health services.

ARTICLE TITLE: Hume, bioethics, and philosophy of medicine.
ARTICLE SOURCE: J Med Philos (Netherlands), Aug 1999, 24(4) p315-21
AUTHOR(S): Kopelman LM; McCullough LB
AUTHOR'S ADDRESS: Department of Medical Humanities, East Carolina University School of Medicine, Greenville, NC 27858, USA.
PUBLICATION TYPE: BIOGRAPHY; HISTORICAL ARTICLE; JOURNAL ARTICLE