TY - JOUR
T1 - Prognostic value of body mass index and body surface area on clinical outcomes after transcatheter aortic valve implantation
AU - Arsalan, Mani
AU - Filardo, Giovanni
AU - Kim, Won Keun
AU - Squiers, John J.
AU - Pollock, Benjamin
AU - Liebetrau, Christoph
AU - Blumenstein, Johannes
AU - Kempfert, Jörg
AU - Van Linden, Arnaud
AU - Arsalan-Werner, Annika
AU - Hamm, Christian
AU - Mack, Michael J.
AU - Moellmann, Helge
AU - Walther, Thomas
N1 - Publisher Copyright:
© 2016, Springer-Verlag Berlin Heidelberg.
PY - 2016/12/1
Y1 - 2016/12/1
N2 - Background: Inverse associations between Body Mass Index (BMI) and Body Surface Area (BSA) with mortality in patients after Transcatheter Aortic Valve Implantation (TAVI) have been reported. This “obesity paradox” is controversial, and it remains unclear which parameter, BMI or BSA, is of greater prognostic value. The aim of this study was to investigate the association of BMI and BSA on short- and mid-term outcomes after TAVI. Methods and results: This prospective, observational study consisted of 917 consecutive patients undergoing TAVI at our center from 2011 to 2014. The association between BMI/BSA and mortality (at 30 days and 1 year) was assessed using restricted cubic spline functions in propensity-adjusted (by Society of Thoracic Surgeons (STS) risk factors) logistic and Cox proportional models, respectively. The median age of the patients was 82.6 years, with a mean STS Predicted Risk of Mortality (STS-PROM) of 6.6 ± 4.3 %. Throughout the study period (mean follow-up time was 297 days), 150 (16.4 %) patients died; 72 (7.9 %) patients died within 30 days of TAVI. After risk adjustment, the association between body constitution and 30-day mortality was not significant for either measure (BMI p = 0.25; BSA p = 0.32). However, BMI (p = 0.01), but not BSA (p = 0.13), was significantly associated with 1-year survival. There was no association between stroke, vascular complications, or length of stay with BMI or BSA. Conclusions: BMI was associated with survival at 1-year after TAVI. Despite the trend towards implementing BSA in risk score calculation, BMI may be more suitable for the assessment of TAVI patients.
AB - Background: Inverse associations between Body Mass Index (BMI) and Body Surface Area (BSA) with mortality in patients after Transcatheter Aortic Valve Implantation (TAVI) have been reported. This “obesity paradox” is controversial, and it remains unclear which parameter, BMI or BSA, is of greater prognostic value. The aim of this study was to investigate the association of BMI and BSA on short- and mid-term outcomes after TAVI. Methods and results: This prospective, observational study consisted of 917 consecutive patients undergoing TAVI at our center from 2011 to 2014. The association between BMI/BSA and mortality (at 30 days and 1 year) was assessed using restricted cubic spline functions in propensity-adjusted (by Society of Thoracic Surgeons (STS) risk factors) logistic and Cox proportional models, respectively. The median age of the patients was 82.6 years, with a mean STS Predicted Risk of Mortality (STS-PROM) of 6.6 ± 4.3 %. Throughout the study period (mean follow-up time was 297 days), 150 (16.4 %) patients died; 72 (7.9 %) patients died within 30 days of TAVI. After risk adjustment, the association between body constitution and 30-day mortality was not significant for either measure (BMI p = 0.25; BSA p = 0.32). However, BMI (p = 0.01), but not BSA (p = 0.13), was significantly associated with 1-year survival. There was no association between stroke, vascular complications, or length of stay with BMI or BSA. Conclusions: BMI was associated with survival at 1-year after TAVI. Despite the trend towards implementing BSA in risk score calculation, BMI may be more suitable for the assessment of TAVI patients.
KW - BMI
KW - BSA
KW - Obese
KW - TAVI
KW - TAVR
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U2 - 10.1007/s00392-016-1027-4
DO - 10.1007/s00392-016-1027-4
M3 - Article
C2 - 27535139
AN - SCOPUS:84982295564
SN - 1861-0684
VL - 105
SP - 1042
EP - 1048
JO - Clinical Research in Cardiology
JF - Clinical Research in Cardiology
IS - 12
ER -