Abstract
The impact of tricuspid regurgitation (TR) in patients with left ventricular systolic dysfunction on presentation and clinical outcome is uncertain due to confounding comorbidities and mediocre regurgitation ascertainment. In a cohort of patients with left ventricular systolic dysfunction (ejection fraction, EF < 50%) and functional TR (assessed quantitatively), we matched TR grade-groups for age, sex, EF, and TR velocity. Association of quantified TR (effective regurgitant orifice, ERO, severe if ≥0.4 cm2) to clinical presentation and outcome was analysed. In the 291 cohort patients (age 70 ± 12 years) with left ventricular dysfunction (EF 31 ± 10%), functional TR ERO was 0.26 ± 0.3 cm2. Presentation with right heart failure was strongly related to TR quantified severity [adjusted odds ratios were 4.15 (1.95-8.84), P = 0.0002 for moderate TR and 6.86 (3.34-14.1), P < 0.0001 for severe TR]. Effective regurgitant orifice ≥0.4 cm2 was associated with increased mortality [hazard ratio 1.6 (1.17-2.2), P = 0.003] unadjusted and after comprehensive adjustment [hazard ratio 1.8 (1.16-2.8), P = 0.009]. Furthermore, ERO ≥0.4 cm2 was associated with increased cardiac events (mortality, new atrial fibrillation or heart failure) unadjusted [hazard ratio 1.9 (1.3-2.7), P = 0.002] and after comprehensive adjustment [hazard ratio 2.2 (1.1-4.6), P = 0.02]. Tricuspid regurgitation, even moderate, is associated at diagnosis with more severe heart failure presentation. While moderate TR is associated with heart failure at presentation, our quantitative data show that the threshold associated with reduced survival and more cardiac events is ERO ≥0.4 cm2. These data emphasize the clinical impact of functional TR and warrant large cohort-analysis and clinical trials of treatment of TR associated with left ventricular dysfunction.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.