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Impact of Body Mass Index on the Outcomes Following Transcatheter Aortic Valve Implantation
Impact of Body Mass Index on the Outcomes Following Transcatheter Aortic Valve Implantation CATHETERIZATION AND CARDIOVASCULAR INTERVENTIONS Abramowitz, Y., Chakravarty, T., Jilaihawi, H., Cox, J., Sharma, R. P., Mangat, G., Nakamura, M., Cheng, W., Makkar, R. R. 2016; 88 (1): 127–34Abstract
To investigate the influence of body mass index (BMI) on short- and midterm outcomes following transcatheter aortic valve implantation (TAVI).Although obesity is a major risk factor for cardiovascular mortality, numerous studies reported a beneficial effect of obesity on survival in patients with cardiovascular disease and in patients after cardiac interventions. Moreover, all previous reports examining the relation between BMI and outcomes following TAVI have underscored the "obesity paradox" in these patients.During a 3 year period, 805 patients with severe aortic stenosis that underwent TAVI at our institute were evaluated. Based on baseline BMI, patients were classified as normal weight (18.5-24.9 kg/m(2) ), overweight (25.0-29.9 kg/m(2) ), or obese (=30 kg/m(2) ). TAVI endpoints, device success, and adverse events were considered according to the Valve Academic Research Consortium (VARC)-2 definitions.Obese patients were significantly younger, had higher prevalence of diabetes mellitus and chronic lung disease, and had lower prevalence of frailty. Device success was similar between the 3 groups. All-cause mortality up to 30 days was 2.9% (10/340) vs 4.5% (12/268) vs 0.5% (1/186) in patients with normal weight, overweight, and obesity, respectively (p = 0.048). In a multivariable model, overweight and obese patients had similar overall mortality compared to patients with normal weight.We found no evidence for the existence of an obesity paradox following TAVI. Correction for possible confounders such as frailty in the present cohort may explain the discrepancy between the current report and the previous reports that suggested a protective effect for increased BMI following TAVI. © 2016 Wiley Periodicals, Inc.
View details for DOI 10.1002/ccd.26394
View details for Web of Science ID 000379984000028
View details for PubMedID 26756702