introduction: as off pump coronary artery bypass grafting surgery (cabg) is a developing method in coronary cardiac surgery, most surgeons are anxious about the danger of emergency crash conversion. in this observational study we tried to show the rate and outcome of conversion . material and methods: in this descriptive study about 477 coronary off-pump cabg patients were operated in ghaem hos...

OBJECTIVES The aim of this study was to determine whether biomarkers of myocardial stress and fibrosis improve prediction of the mode of death in patients with chronic heart failure. BACKGROUND The 2 most common modes of death in patients with chronic heart failure are pump failure and sudden cardiac death. Prediction of the mode of death may facilitate treatment decisions. The relationship b...

For good classiication preprocessing is a key step. Good pre-processing reduces the noise in the data and retains most information needed for classiication. Poor preprocessing on the other hand can make classiication almost impossible. In this paper we evaluate several feature extraction methods in a special type of outlier detection problem, machine fault detection. We will consider measuremen...

OBJECTIVES The objective of this study was to compare the early outcomes of off-pump and on-pump surgeries in high-risk patient groups. METHODS The outcomes of 83,914 high-risk patients undergoing off-pump or on-pump isolated coronary bypass surgery identified from the Nationwide Inpatient Sample from 2005 to 2010 were compared using propensity analysis. RESULTS Off-pump surgery was associa...

Centrifugal pumps constitute some of the hardest working and most critical plant components within industry. Although relatively elementary in principle of operation, the humble centrifugal pump produces an inherently challenging environment to the materials used to construct it. Knowledgeable design/materials selection can reward the engineer with both reliability and durability but unexpected...

OBJECTIVES To determine the effect of the off-pump technique in preventing stroke development during the early perioperative period after coronary artery bypass graft surgery (CABG). METHODS Patients undergoing isolated CABG surgery were enrolled from 21 Spanish cardiac-surgery centres. Baseline variables related to perioperative stroke risk were recorded in the preoperative (age, gender, dia...

OBJECTIVE The subset of patients most likely to benefit from off-pump coronary artery bypass grafting (CABG) remains a controversial issue, but the technique has been proposed to decrease postoperative mortality and morbidity. Th e objective of this study was to compare off-pump to onpump CABG in patients with known risk factors for mortality and morbidity. METHODS Between October 2001 and Se...