Early Invasive Strategy in Non-ST-Elevation Acute Coronary Syndrome With Congestive Heart Failure　- A Systematic...

Area of Science:

• Cardiology
• Clinical Trials
• Heart Failure Research

Background:

• Congestive heart failure (CHF) significantly worsens outcomes for patients with non-ST-elevation acute coronary syndrome (NSTE-ACS).
• The optimal timing for invasive procedures in NSTE-ACS patients complicated by CHF is not well-established.
• This study addresses the clinical uncertainty surrounding invasive strategies in this high-risk patient population.

Purpose of the Study:

• To evaluate the impact of early versus delayed invasive strategies on mortality and cardiac events in NSTE-ACS patients with CHF.
• To synthesize evidence from randomized controlled trials (RCTs) to clarify treatment guidelines.
• To assess the comparative effectiveness of different invasive timing approaches.

Main Methods:

• Systematic review of randomized controlled trials (RCTs) comparing early and delayed invasive strategies.
• Searched major databases (MEDLINE, CENTRAL, Web of Science) for studies published before February 2023.
• Excluded observational studies; primary endpoint was a composite of all-cause mortality and myocardial infarction at 2 years.

Main Results:

• Two RCTs with 310 participants were included.
• The primary composite endpoint occurred in 24.5% of the early invasive group versus 26.5% of the delayed invasive group.
• The risk ratio for the primary outcome was 0.95 (95% CI 0.66-1.37), indicating uncertain effects of an early invasive strategy.

Conclusions:

• The benefit of an early invasive strategy in NSTE-ACS patients with CHF remains uncertain.
• No significant reduction in the composite outcome of mortality and myocardial infarction at 2 years was observed compared to delayed intervention.
• The certainty of the evidence supporting early invasive strategies is rated as very low.