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A Randomized Study of Distal Filter Protection Versus Conventional Treatment During Percutaneous Coronary Intervention in Patients With Attenuated Plaque Identified by Intravascular Ultrasound Relationship between intravascular ultrasound guidance and clinical outcomes after drug-eluting stents: the assessment of dual antiplatelet therapy with drug-eluting stents (ADAPT-DES) study First-in-man evaluation of intravascular optical frequency domain imaging (OFDI) of Terumo: a comparison with intravascular ultrasound and quantitative coronary angiography Assessment of coronary atherosclerosis by IVUS and IVUS-based imaging modalities: progression and regression studies, tissue composition and beyond Phenomapping for Novel Classification of Heart Failure With Preserved Ejection Fraction Comparison of intravascular ultrasound guided versus angiography guided drug eluting stent implantation: a systematic review and meta-analysis Titration of Medical Therapy for Heart Failure With Reduced Ejection Fraction Surgery Does Not Improve Survival in Patients With Isolated Severe Tricuspid Regurgitation Derivation, Validation, and Prognostic Utility of a Prediction Rule for Nonresponse to Clopidogrel: The ABCD-GENE Score Temporal Trends in Inpatient Use of Intravascular Imaging Among Patients Undergoing Percutaneous Coronary Intervention in the United States

Clinical Trial2018 May 22. [Epub ahead of print]

JOURNAL:Chest. Article Link

The association between body mass index and obesity with survival in pulmonary arterial hypertension

Weatherald J, Huertas A, Boucly A et al. Keywords: body mass index; obesity; prognosis; pulmonary arterial hypertension; survival

ABSTRACT


BACKGROUNDAn obesity paradox, wherein obese patients have lower mortality, has been described in cardiopulmonary diseases, including pulmonary arterial hypertension (PAH). Our objective was to determine whether obesity and body mass index (BMI) are associated with mortality in patients with PAH.


METHODS - We assessed incident patients with idiopathic, drug-induced, and heritable PAH from the French PAH Registry. Cox regression and Kaplan-Meier analysis were used to assess the association between BMI and obesity with all-cause mortality.

RESULTS - Of 1255 patients included, 30% were obese. A higher proportion of females (65.1% vs 53.4%, p<0.01), drug-induced PAH (28.9% vs 9.2%, p<0.01), systemic hypertension, diabetes, and hypothyroidism were present in the obese group. More obese patients were in New York Heart Association class III (66.4% vs. 57.1%), fewer were class IV (11.8% vs 16.9%) (p<0.01), and 6-minute walk distance was lower (276±121 vs 324±146, p<0.01). Right atrial pressure, pulmonary wedge pressure and cardiac index were higher while pulmonary vascular resistance was lower in obese patients. Neither BMI (HR 0.99, 95%CI 0.97-1.01, p=0.41) nor obesity (HR 1.0, 95%CI 0.99-1.01, p=0.46) were associated with mortality in multivariable analyses. There was a significant interaction between age and obesity such that mortality increased among morbidly obese patients under 65 years old (HR 3.01, 95%CI 1.56-5.79, p=0.001).

CONCLUSIONS - Obesity was not associated with mortality in the overall population, but there was an age-obesity interaction with increased mortality among young morbidly obese patients. These results have implications for active weight management in younger morbidly obese patients who are otherwise candidates for lung transplantation.

Copyright © 2018. Published by Elsevier Inc.