Exercise Capacity and Clinical Outcomes in Chronic Heart Failure Patients with Mild Tricuspid Regurgitation

Area of Science:

• Cardiology
• Heart Failure Research
• Valvular Heart Disease

Background:

• Tricuspid regurgitation (TR) is common in patients with chronic heart failure (CHF).
• The prognostic impact of mild TR on exercise capacity and clinical outcomes in CHF is not fully understood.
• Understanding TR's role is crucial for managing CHF patients.

Purpose of the Study:

• To investigate the association between mild tricuspid regurgitation (TR) and exercise capacity in patients with chronic heart failure (CHF).
• To evaluate the impact of mild TR on clinical outcomes, including heart failure hospitalization and mortality, in CHF patients.

Main Methods:

• The study included 511 patients with CHF who underwent cardiopulmonary exercise testing (CPET).
• Patients were categorized based on TR severity: non-TR, mild TR, and significant TR (moderate or greater).
• Clinical outcomes were tracked over a median follow-up of 3.3 years, with heart failure hospitalization and death as primary endpoints.

Main Results:

• Patients with mild TR and significant TR showed reduced exercise capacity compared to those with non-TR.
• Mild TR was associated with a 3.0-fold higher risk of adverse events (heart failure hospitalization or death) compared to non-TR.
• Multivariate analysis confirmed that mild TR independently predicted increased adverse events in CHF patients (HR 2.97; 95% CI, 1.35-6.55).

Conclusions:

• TR severity correlates with diminished exercise capacity and poorer clinical outcomes in CHF.
• Even mild TR is linked to worse clinical characteristics and increased adverse event risk in CHF patients compared to those without TR.
• These findings underscore the importance of assessing TR severity in the management of chronic heart failure.