Using Breathing Techniques to Ease Anxiety in ICU Patients Awaiting Heart Transplants

The goal of this clinical trial is to learn whether a breathing-based relaxation technique called heart rate variability biofeedback (HRVB) can help reduce anxiety in adult patients who are in the intensive care unit (ICU) and waiting for a heart transplant. The main questions it aims to answer are: Can HRVB reduce anxiety in patients awaiting heart transplantation in the ICU? Does HRVB help patients feel more in control of their emotions during this stressful time? Participants will: Complete a brief anxiety assessment before and after the intervention Participate in a guided HRVB session using a breathing device or app Learn how to use the technique on their own for future stress management

NCT Number	NCT07381023
Lead Sponsor	Hartford HealthCare
Conditions	Anxiety, Heart Transplant Patients
Enrollment	60 participants
Start Date	2026-03
Primary Completion	2027-11 (estimated)
Study Completion	2027-12 (estimated)
Updated on ClinicalTrials.gov	2026-03-27