Work

Body mass index is associated with low postoperative cardiac output in patients undergoing aortic valve replacement

Year: 2021

Type: article

Abstract: Background: Overweight and obesity (O/O) generate lipotoxicity of the cardiac fiber and increase the incidence and progression of aortic valve stenosis.The low cardiac output syndrome (LCOS) is a timing complication after to aortic valve replacement (AVR) surgery.Objective: The objective of the study was to investigate if body mass index (BMI) kg/m 2 is a risk factor associated with LCOS and mortality in the post-operative period of AVR.Methods: A historic cohort study was designed, including patients with severe aortic stenosis (SAS), who were subjected to AVR.Results: 152 patients were included, 45 (29.6%), with normal weight (NW), 60 were overweight (39.5%), and 47 obese (30.9%).The prevalence of systemic hypertension (HT) was higher in O/O (p < 0.0001).Incidence of LCOS was 44.7%, being more frequent in the O/O groups compared to the NW group, 43.3%, 68.1%, and 22.2%, respectively, (p < 0.05 in overweight and p < 0.0001 in the obese).Assessing the presence or absence of LCOS associated with BMI as a numerical variable, we found that women, HT, BMI, left ventricular mass, and valve size, were associated with LCOS (p < 0.02, p < 0.02, p < 0.001, p < 0.032, and p < 0.045, respectively).Mortality was higher in patients who had LCOS (p < 0.02).Multivariate model showed that BMI was an independent risk factor for LCOS (odds ratio [OR] 1.21 [95% CI 1.08-1.35],p < 0.001).Conclusion: BMI is a risk factor associated to LCOS in the post-operative period of AVR in patients with SAS.

Source: Archivos de cardiolog�a de M�xico (English ed Internet)

DOI: 10.24875/acme.m20000165