Enhanced external counterpulsation for chronic angina pectoris

Area of Science:

• Cardiology
• Medical Devices
• Clinical Trials

Background:

• Cardiovascular disease remains a leading cause of mortality globally.
• Refractory stable angina pectoris often shows limited response to conventional treatments.
• Enhanced external counterpulsation (EECP) is a non-invasive therapy utilizing sequential cuff inflation to improve cardiac blood flow and alleviate angina symptoms.

Purpose of the Study:

• To evaluate the efficacy of enhanced external counterpulsation (EECP) therapy in enhancing health outcomes for patients diagnosed with chronic stable or refractory stable angina pectoris.

Main Methods:

• A systematic search was conducted across major databases including CENTRAL, MEDLINE, EMBASE, LILACS, and Web of Science.
• Included studies were randomized controlled trials and cluster-randomized trials comparing EECP to sham treatments in adults (≥18 years) with Canadian Cardiovascular Society Class III to IV angina.
• Two independent reviewers screened studies, extracted data, and assessed the risk of bias.

Main Results:

• A single trial with 139 participants was included in this review.
• The trial exhibited significant methodological limitations, including trial design, conduct, outcome reporting, and statistical analysis, compromising data reliability.
• Incomplete reporting of primary outcomes and limited follow-up for secondary outcomes further impacted the findings.

Conclusions:

• The single included trial inadequately represented the target population, excluding patients with the most severe angina.
• The study's findings are not generalizable to the broader population with chronic angina pectoris.
• Inconclusive evidence exists regarding the effectiveness of enhanced external counterpulsation therapy for chronic angina based on this review.