Publications by authors named "Artyom Sedrakyan"

Objective: Use of cardiac devices has been increasing rapidly along with concerns over their safety and effectiveness. This study used hospital administrative data to assess cardiac device implantations in the United States, selected perioperative outcomes, and associated patient and hospital characteristics.

Methods: We screened hospital discharge abstracts from the 1997-2004 Healthcare Cost and Utilization Project Nationwide Inpatient Samples.

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The issues of weighing benefits and harms and of shared decision-making have become increasingly important in recent years. There is limited knowledge and lack of adequate data on the most transparent method of communicating the information. In this article we discuss examples of communicating benefits and harms for well-known therapeutics, illustrating that relative risk estimates are not helpful for communicating the chance of experiencing adverse events.

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Background And Purpose: There is growing enthusiasm for coronary artery bypass grafting (CABG) without cardiopulmonary bypass (CPB). Although deleterious effects of CPB are known, it remains to be proven that avoiding CPB will result in reduction in morbidity. We sought to determine whether off-pump surgery is associated with reduced occurrence of adverse outcomes as compared with CABG with CPB.

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Background: The decision to replace or repair mitral valves is often a difficult decision, and outcomes from the patients' perspective should guide decision-making. We investigated whether the change in health related quality of life (HRQOL) after mitral valve surgery is different after valve repairs compared with replacements.

Methods: We prospectively studied 25 patients with mitral valve replacement and 45 patients with valve repairs performed in 1998-99.

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Objectives: Previous studies of aprotinin use in thoracic aortic surgery, limited in size and design, reported minimal information regarding outcomes other than blood loss and transfusion. The evaluation of impact of aprotinin on surgical outcomes in a large sample is needed.

Methods: Patients at Yale New Haven Hospital undergoing thoracic aortic surgery (aneurysm repair, dissections, penetrating ulcers, intramural hematomas) between 1995 and 2003 were considered for inclusion.

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The aim of this study was to review systematically the available evidence on pleurodesis for malignant effusion, focusing on the choice of the agents, route of delivery and other strategies to improve outcomes. Four electronic databases (MEDLINE, EMBASE, Web of Science and Cochrane Controlled Trials Register) were searched, reference lists checked and letters requesting details of unpublished trials and data sent to authors of previous trials. Studies of malignant pleural effusion in humans were selected with no language restrictions applied.

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Background: Knowledge of the risk of atrial fibrillation (AF) for patients undergoing coronary artery bypass graft surgery (CABG) can guide decisions about prophylactic therapy. Accordingly, we sought to use tree-based methods to stratify patients into groups that will have similar risk of AF after CABG and informed decision making regarding aggressive prophylaxis of AF.

Methods: We studied 1209 consecutive patients with isolated CABG performed in 1998-1999 at Yale-New Haven Hospital.

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Purpose: Medical decisions are often made based on personal experience or on limited clinical trial information. Results from systematic reviews of clinical trials, however, provide a more thorough understanding of available data and can foster evidence-based decision making. Data from a recent systematic review and meta-analysis of clinical outcomes after aprotinin treatment during coronary artery bypass graft (CABG) surgery have recently been published.

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Background: Atrial tachyarrhythmia is the most common complication after general thoracic surgery and is associated with significant morbidity, longer hospital stay, and higher costs. We sought to determine whether the use of antiarrhythmic medications is associated with a reduced rate of postoperative atrial tachyarrhythmia.

Methods: MEDLINE, EMBASE, Cochrane Database of clinical trials (1980-2003), and reference lists of relevant articles were searched for randomized controlled trials with placebo control, general thoracic patients, and noncombined and prophylactic use of the medications.

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Objective: To determine how the quality of life (QOL) of intensive care unit (ICU) survivors compares with the general population, changes over time, and is predicted by baseline characteristics.

Design: Systematic literature review including MEDLINE, EMBASE, CINAHL and Cochrane Library. Eligible studies measured QOL > or = 30 days after ICU discharge using the Medical Outcomes Study 36-item Short Form (SF-36), EuroQol-5D, Sickness Impact Profile, or Nottingham Health Profile in representative populations of adult ICU survivors.

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Background: Outpatient positive inotropic support combined with implantation of an automatic implantable cardioverter defibrillator (AICD) may be used as a successful bridge to cardiac transplantation in patients with end-stage heart failure. A detailed comparative cost analysis of this outpatient strategy versus in-hospital care has not been previously reported.

Methods And Results: Twenty-one United Network for Organ Sharing 1B patients awaiting cardiac transplantation received continuous outpatient inotropic therapy for a total of 3070 patient-days.

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Context: The incidence of malignant pleural mesothelioma is increasing throughout most of the world. This cancer is uniformly fatal, and characterised by progressive breathlessness and unremitting pain in the chest wall. From the onset of symptoms, survival is from a few weeks to a few years.

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Objectives: To determine if video assisted thoracic surgery is associated with better clinical outcomes than thoracotomy for three common procedures: surgery for pneumothorax, minor resections, and lobectomy.

Design: Systematic review of randomised clinical trials.

Data Sources: Medline, Embase, Cochrane database of systematic reviews, Cochrane controlled trials register.

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Objective: Despite proven blood transfusion benefits, aprotinin may be underused in coronary artery bypass grafting. Reluctance to use aprotinin may stem from safety concerns. The current objective was to evaluate clinical outcomes (mortality, myocardial infarction, renal failure, stroke, atrial fibrillation) in patients undergoing coronary artery bypass grafting who receive aprotinin by performing a quantitative overview of published, randomized, controlled trials.

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Background: Postoperative chemotherapy is currently not recommended for resected non-small cell lung cancer in many countries and centers. Recently, results of several large randomized clinical trials were reported with conflicting evidence. Accordingly, we sought to determine whether postoperative chemotherapy is associated with improved survival compared with that after surgical intervention alone.

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Objectives: We sought to determine whether changes in quality of life at 18 months following aortic valve replacement differ depending on the use of tissue valves or mechanical valves.

Methods: We prospectively studied 73 patients with tissue valve replacements and 53 patients with mechanical valve replacements performed from April 1998 through March 1999 at Yale-New Haven Hospital. Quality of life was measured at baseline and at 18 months using the Medical Outcomes Trust Short Form 36-Item Health Survey.

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Background: Beta-blockers substantially improve survival in patients with chronic heart failure (HF) with left ventricular systolic dysfunction, but concerns about cardiovascular adverse effects may deter physicians from prescribing this therapy. We performed an overview of randomized beta-blocker trials in patients with HF to quantify the risks of these adverse effects.

Methods: Heart failure trials of beta-blockers were identified by electronic searches of the MEDLINE database from 1966 to 2002.

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Background: The clinical use of positive inotropic therapy at home in patients awaiting cardiac transplantation has not been reported since United Network for Organ Sharing (UNOS) regulations were changed to allow home infusions in Status 1B patients.

Methods: We observed 21 consecutive patients with UNOS 1B status during positive inotropic therapy at home. We used hemodynamic monitoring at the initiation of therapy to optimize dosing.

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Objectives: We sought to determine the association of age with the change in quality of life (QOL) after valve surgery.

Background: Improvement in QOL is one of the principal goals of valve surgery. These procedures are being done with increasing frequency for older patients.

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Objectives: Albumin and nonprotein colloids (starches, dextran, and others) are used frequently as blood volume expanders in coronary artery bypass graft (CABG) surgery. The objective of this study was to determine differences between colloids with regard to patient characteristics and mortality rates.

Design And Setting: Discharge data collected in the Solucient Clinical Pathways Database from 19,578 patients undergoing CABG surgery were analyzed.

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Context: beta-Blocker therapy remains substantially underused in cardiac patients despite its proven mortality benefits. Reluctance to prescribe these agents may derive from concerns about their association with symptoms of depression, fatigue, and sexual dysfunction.

Objective: To determine the association of beta-blockers with depressive symptoms, fatigue, and sexual dysfunction by performing a quantitative review of randomized trials that tested beta-blockers in myocardial infarction, heart failure, and hypertension.

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