Effect of Body Mass Index on Postoperative Transfusions and 24-Hour Chest-Tube Output

ABSTRACT An increasing obese population in the United States focuses attention on the effect of obesity on surgical outcomes. Our objective was to see if obesity, determined by body mass index (BMI), contributed to bleeding in coronary artery bypass graft (CABG) surgery as measured by intraoperative...

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Published in:The International journal of angiology 2011-06, Vol.20 (2), p.081-086
Main Authors: Nolan, Heather R, Ramaiah, Chandrashekhar
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description ABSTRACT An increasing obese population in the United States focuses attention on the effect of obesity on surgical outcomes. Our objective was to see if obesity, determined by body mass index (BMI), contributed to bleeding in coronary artery bypass graft (CABG) surgery as measured by intraoperative and postoperative packed red blood cell transfusion frequency and amount and 24-hour chest-tube output. A retrospective chart review examined 150 subjects undergoing single-surgeon off-pump or on-pump CABG surgery between September 2006 and April 2009. BMI groups included normal-weight (BMI
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The percentage of subjects receiving transfusions in the combined intraoperative or 72-hour postoperative period showed a decreasing linear trend based on BMI group (P = 0.054). The transfusion amount during the 72-hour postoperative period varied significantly between BMI groups (P = 0.021), and the test for a linear decrease across groups was significant (P = 0.020). Twenty-four hour chest-tube output showed variation across all three BMI categories (P = 0.018) with chest-tube output decreasing with increasing obesity in a linear fashion (P = 0.006). 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title Effect of Body Mass Index on Postoperative Transfusions and 24-Hour Chest-Tube Output
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