NCT06253104

Changes in Skeletal Muscle Thickness in Patients With Acute Heart Failure

• Status: Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 60 (estimated)
• Sponsor: Tufts Medical Center · Academic / Other
• Sex: All
• Age: 18 Years – 100 Years
• Healthy volunteers: Not accepted

Summary

This study aims to determine, via skeletal muscle ultrasound (US), the extent, timing and relationship between skeletal muscle mass loss and outcomes after orthotropic heart transplantation (OHT) and left ventricular assist device (LVAD) implantation amongst patients with cardiogenic shock. Advanced therapies such as OHT and VADs in the heart failure (HF) population may promote skeletal muscle mass and subsequent quality of life, but there is a lack of literature assessing muscle mass changes in HF patients before and after advanced therapies using US imaging. Therefore this observational study will provide further insight into the 1) changes in lean body mass during critical illness and 2) the feasibility of using bedside US to assess lean body mass in the inpatient setting.

Detailed description

The investigators will be recruiting subjects with advanced cardiomyopathy in cardiogenic shock in the inpatient setting. This is an observational study to better understand changes in lean body mass during critical illness through a quick, safe, and non-invasive method. This study will also validate the use of the BodyMetrix BX 2000 Pro ultrasound machine for the assessment of body composition, particularly muscle wasting, in the cardiogenic shock population. The ultrasound device received 501(k) designation from the FDA in 2009 for measurement of localized fat and muscle thickness. Baseline US muscle thickness assessments will occur at baseline after consent; then days 3 and 7 after baseline study visit; then every 7 days thereafter until end of the index hospitalization (discharge or death). Each measurement session will take about 20-30 minutes.The investigators will take measurements at two sites: the lateral thigh and bicep (participant's dominant side). Clear ultrasound gel will be applied to the skin and the ultrasound probe placed against the skin, and the muscle thickness measurement made five times at each position. The US images are read after a study visit completion, with measurements taken at pre-specified anatomic landmarks to obtain the muscle thickness, which is averaged accross the duplicate measurements. The primary endpoints are: Percentage change in skeletal muscle thickness from admission to nadir; Percentage change in skeletal muscle thickness after advanced therapies; and the Relationship between muscle mass loss during cardiogenic shock and subsequent clinical outcomes.

Conditions

• Heart Failure
• Muscle Atrophy
• Skeletal Muscle Atrophy
• Cardiogenic Shock

Interventions

Type	Name	Description
DIAGNOSTIC_TEST	BodyMetrix Body Composition Ultrasound	We will use a BodyMetrix Pro A-mode ultrasound device (BodyMetrix Pro, Intelametrix Inc., Livermore, CA) which is a lay imaging tool designed specifically to assess body composition. Images will be taken at two sites; the lateral thigh and bicep on the dominant side if able to identify, or else on the right side. On each visit, five images will be taken at each site (the lateral thigh and bicep). Participants will be measured 2-3 days from initiation in study, then 7 days after, and then weekly from the first measurement until time of advanced therapy, discharge, or death. This measurement sequence will then be repeated following advanced therapy up until discharge or death. Each measurement session will last about 20-30 minutes. This will be performed by the PI or members of the study team who have been trained by the research coordinator.

Timeline

• Start date: 2024-02-19
• Primary completion: 2026-12-31
• Completion: 2026-12-31
• First posted: 2024-02-12
• Last updated: 2025-04-23

Locations

1 site across 1 country: United States

Regulatory

• FDA-regulated device study