Predictors of outcomes in patients with obesity following mitral valve surgery

© 2023 The Author(s)..

Objective: Few studies have assessed the outcomes of mitral valve surgery in patients with obesity. We sought to study factors that determine the in-hospital outcomes of this population to help clinicians provide optimal care.

Methods: A retrospective analysis of adult patients with obesity who underwent open mitral valve replacement or repair between January 1, 2012, and December 31, 2020, was conducted using the National Inpatient Sample. Weighted logistic regression and random forest analyses were performed to assess factors associated with mortality and the interaction of each variable.

Results: Of the 48,775 patients with obesity, 34% had morbid obesity (body mass index ≥40), 55% were women, 66% underwent elective surgery, and 55% received isolated open mitral valve replacement or repair. In-hospital mortality was 5.0% (n = 2430). After adjusting for important covariates, a greater risk of mortality was associated with older patients (adjusted odds ratio [aOR], 1.24; 95% CI, 1.08-1.43), higher Elixhauser comorbidity score (aOR, 2.10; 95% CI, 1.87-2.36), prior valve surgery (aOR, 1.63; 95% CI, 1.01-2.63), and more than 2 concomitant procedures (aOR, 2.83; 95% CI, 2.07-3.85). Lower mortality was associated with elective admissions (aOR, 0.70; 95% CI, 0.56-0.87) and valve repair (aOR, 0.58; 95% CI, 0.46-0.73). Machine learning identified several interactions associated with early mortality, such as Elixhauser score, female sex, body mass index ≥40, and kidney failure.

Conclusions: The complexity of presentation, comorbidities in older and female patients, and morbid obesity are independently associated with an increased risk of mortality in patients undergoing open mitral valve replacement or repair. Morbid obesity and sex disparity should be recognized in this population, and physicians should consider older patients and females with multiple comorbidities for earlier and more opportune treatment windows.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:15

Enthalten in:

JTCVS open - 15(2023) vom: 05. Sept., Seite 127-150

Sprache:

Englisch

Beteiligte Personen:

Alnajar, Ahmed [VerfasserIn]
Benck, Kelley N [VerfasserIn]
Dar, Tawseef [VerfasserIn]
Hirji, Sameer A [VerfasserIn]
Ibrahim, Walid [VerfasserIn]
Detweiler, Brian [VerfasserIn]
Vuddanda, Venkat [VerfasserIn]
Balise, Raymond [VerfasserIn]
Rao, J Sunil [VerfasserIn]
Lu, Min [VerfasserIn]
Lamelas, Joseph [VerfasserIn]

Links:

Volltext

Themen:

Adult cardiac
Journal Article
Machine learning
Mitral valve
Mortality
Obesity
Random forest

Anmerkungen:

Date Revised 18.10.2023

published: Electronic-eCollection

Citation Status PubMed-not-MEDLINE

doi:

10.1016/j.xjon.2023.03.017

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM363012214