Valvular heart diseaseEffect of Body Mass Index on Survival in Patients Having Aortic Valve Replacement for Aortic Stenosis With or Without Concomitant Coronary Artery Bypass Grafting
Section snippets
Methods
The surgical pathology files of the cardiovascular laboratory—a part of the pathology department at Baylor University Medical Center (BUMC) at Dallas—were searched for patients having operatively excised aortic valves without simultaneous repair or replacement of the mitral valve or evidence of mitral stenosis. From January 2002 through June 2010 (102 months or 8.5 years) 1,040 operatively excised stenotic aortic valves were submitted to the cardiovascular laboratory at BUMC. Of the 1,040 cases
Results
The crude analysis showed that of the 14 factors analyzed, age, aortic valve area, 30-day mortality, and type substitute valve implanted were the only factors significantly different among the 4 BMI groups (Table 1). Among the 3 age groups (21 to 50, 51 to 70, and 71 to 95 years) the oldest group had the highest percent with ideal (≤25 kg/m2) BMI, and the middle-age group had the highest percent with morbid obesity (BMI >40 kg/m2). Overweight (BMI >25 kg/m2) was present in 46 of the 64 patients
Discussion
Many publications have appeared describing the effect of BMI on outcomes after cardiac surgery.6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23 Most have been limited to patients who had CABG only.6, 8, 9, 10, 11, 13, 14, 18, 22 Some have described the effect of BMI on outcomes after cardiac surgery but these reports make it impossible to tease out the effect of BMI on outcomes of isolated AVR with or without concomitant CABG.7, 12, 15, 16, 17, 21 A few reports have appeared
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The study was funded by Baylor Health Care System Foundation, Dallas, Texas.