The ROle of Compression StocKings in Heart Failure Patients

Introduction Heart failure (HF) affects 6.2 million patients in the United States and was responsible of 13.4% of deaths in 2018 costing about 30.7 billion USD in 2012, and about 80% of all the patients with HF are \>65 years old. Clinical manifestations include shortness of breath and peripheral edema. Diuretics are indicated to treat edema in patients with HF, however, its use is limited in patients with compromised kidney function. Peripheral edema is associated with pain, heavy legs, limited mobility, and poor quality of life, increasing the risk of cellulitis, and wounds. Heart failure was identified in up to 44% of patients with venous ulcers. The chronic use of compression stockings in HF patients has potential benefits such as a better control of the edema, decreasing the need for diuretics, improving mobility, prevention of progression of venous disease, and prevention of venous ulcers. To date, no major HF guidelines recommend in favor or against compression stockings in HF patients.

Previous studies in patients with HF who had a pulmonary artery catheter in place, showed that compression of the lower extremities increases the right atrial pressure. However, it was a short intervention, and there was no evidence of clinical deterioration or worsening symptoms of HF. A retrospective review from a wound center showed that the use of compression therapy in HF patient was not associated with an increase in death, hospitalizations, or use of diuretics.

Hypothesis: The hypothesis is the use of compression stockings would prevent developing or worsening venous disease (venous reflux, and venous ulcers), improving the edema of the lower extremities, mobility and quality of life in HF patients without increasing the risk of HF deterioration, hospitalization, or death. To obtain preliminary information, this study proposes to randomize 30 patients with HF (New York Heart Association class II-III, stage A, B or C) on maximum medical therapy to 3 months of compression stockings 20-30 mmHg knee high (High compression group, n=15) vs. regular stocking with ≤10 mmHg of compression (Low compression group, n=15).

Aim 1. To determine whether the use of graduated 20-30 mmHg compression stockings are associated with clinical deterioration or increase is hospitalization or death in patients with HF. Patients will be evaluated at baseline, in a week after enrollment (telemedicine), and at three months. The New York Heart Association (NYHA) clinical classification, the Kansas City Cardiomyopathy Questionnaire (KCCQ), levels of brain natriuretic peptide, serum creatinine, documentation of diuretic therapy, body weight, visits to the Emergency Department, hospitalizations and deaths will be obtained on the baseline and 3-month visit. The change in NYHA clinical classification, KCCQ, body weight, diuretic dosage and any adverse events will be compared at 3 months.

AIM 2a. To evaluate if the use of graduated 20-30 mmHg compression stockings is associated with prevention of developing or worsening venous reflux. The presence of venous reflux will be documented with a venous duplex of the lower extremities looking for reflux and obstruction. The difference in time (3-month - baseline) of venous valve closure in milliseconds in bilateral common iliac, common femoral, femoral, popliteal veins, saphenous-femoral junction, great saphenous and small saphenous veins will be documented and compared between high compression and low compression stocking groups.

AIM 2b. To evaluate if the use of graduated 20-30 mmHg compression stockings is associated with prevention of developing or worsening clinical signs of venous insufficiency (C class of CEAP C1-C6). A brief physical exam of the lower extremities will be performed to obtain the C class for the CEAP classification for venous disease at baseline and 3 months. The C score will be compared between high compression and low compression stocking groups.

Aim 3. To evaluate if the use of graduated 20-30 mmHg compression stockings is associated with improvement of mobility and quality of life in heart failure patients. The quality of life will be documented using the VEINS QoL and SF-36 questionnaires; and the mobility will be assessed using the Short Physical Performance Battery test (SPPB). Patients will be evaluated at baseline and at 3-months visits. The difference in scores (3-month - baseline) will be compared between high compression and low compression stocking groups.