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Mathew RO, Kretov EI, Huang Z, Jones PG, Sidhu MS, O’Brien SM, Prokhorikhin AA, Rangaswami J, Newman J, Stone GW, Fleg JL, Spertus JA, Maron DJ, Hochman JS, Bangalore S. Body Mass Index and Clinical and Health Status Outcomes in Chronic Coronary Disease and Advanced Kidney Disease in the ISCHEMIA-CKD Trial. Am J Med 2024; 137:163-171.e24. [PMID: 37925061 PMCID: PMC10872316 DOI: 10.1016/j.amjmed.2023.10.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 10/12/2023] [Accepted: 10/16/2023] [Indexed: 11/06/2023]
Abstract
OBJECTIVE This study aimed to assess whether an obesity paradox (lower event rates with higher body mass index [BMI]) exists in participants with advanced chronic kidney disease (CKD) and chronic coronary disease in the International Study of Comparative Health Effectiveness of Medical and Invasive Approaches (ISCHEMIA)-CKD, and whether BMI modified the effect of initial treatment strategy. METHODS Baseline BMI was analyzed as both a continuous and categorical variable (< 25, ≥ 25 to < 30, ≥ 30 kg/m2). Associations between BMI and the primary outcome of all-cause death or myocardial infarction (D/MI), and all-cause death, cardiovascular death, and MI individually were estimated. Associations with health status were also evaluated using the Seattle Angina Questionnaire-7, the Rose Dyspnea Scale, and the EuroQol-5D Visual Analog Scale. RESULTS Body mass index ≥ 30 kg/m2 vs < 25 kg/m2 demonstrated increased risk for MI (hazard ratio [HR] [95% confidence interval] = 1.81 [1.12-2.92]) and for D/MI (HR 1.45 [1.06-1.96]) with a HR for MI of 1.22 (1.05-1.40) per 5 kg/m2 increase in BMI in unadjusted analysis. In multivariate analyses, a BMI ≥ 30 kg/m2 was marginally associated with D/MI (HR 1.43 [1.00-2.04]) and greater dyspnea throughout follow-up (P < .05 at all time points). Heterogeneity of treatment effect between baseline BMI was not evident for any outcome. CONCLUSIONS In the ISCHEMIA-CKD trial, an obesity paradox was not detected. Higher BMI was associated with worse dyspnea, and a trend toward increased D/MI and MI risk. Larger studies to validate these findings are warranted.
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Affiliation(s)
- Roy O. Mathew
- Department of Medicine, Loma Linda VA Health Care System, Loma Linda, CA, USA
| | - Evgeny I. Kretov
- National Medical Research Center of Ministry of Health of Russia, Novosibirsk, Russia
| | - Zhen Huang
- Duke Clinical and Research Institute and Duke University, Durham, NC, USA
| | - Philip G. Jones
- University of Missouri – Kansas City (UMKC)’s Healthcare Institute for Innovations in Quality and Saint Luke’s Mid America Heart Institute/, Kansas City, MO, USA
| | | | - Sean M. O’Brien
- Duke Clinical and Research Institute and Duke University, Durham, NC, USA
| | | | - Janani Rangaswami
- George Washington University School of Medicine, Washington, DC, USA
- Washington DC Veteran Affairs Medical Center, Washington, DC, USA
| | - Jonathan Newman
- Cardiovascular Clinical Research Center, NYU Grossman School of Medicine, New York, NY, USA
| | - Gregg W. Stone
- The Zena and Michael A. Wiener Cardiovascular Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jerome L. Fleg
- National Heart, Lung, and Blood Institute, Bethesda, MD, USA
| | - John A. Spertus
- University of Missouri – Kansas City (UMKC)’s Healthcare Institute for Innovations in Quality and Saint Luke’s Mid America Heart Institute/, Kansas City, MO, USA
| | - David J. Maron
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Judith S. Hochman
- Cardiovascular Clinical Research Center, NYU Grossman School of Medicine, New York, NY, USA
| | - Sripal Bangalore
- Cardiovascular Clinical Research Center, NYU Grossman School of Medicine, New York, NY, USA
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