Early Versus Delayed Pacemaker for Heart Block After Valve Surgery: A Cost-Effectiveness Analysis.

Area of Science:

• Cardiology
• Health Economics
• Medical Device Management

Background:

• High-grade atrioventricular block post-valve surgery often resolves, but predicting recovery is challenging.
• Management strategies for pacemaker implantation timing require cost-effectiveness evaluation.

Purpose of the Study:

• To compare the cost-effectiveness of early pacemaker implantation versus watchful waiting for acute atrioventricular block after valve surgery.

Main Methods:

• A cost-effectiveness model analyzed short- and long-term outcomes, including complications, recovery rates, and quality-adjusted life years (QALYs) over 20 years.
• Decision analysis compared early pacemaker placement (5 days) against watchful waiting (12 days) based on a 36.7% recovery rate at 12 days.

Main Results:

• Watchful waiting resulted in higher utility (9.05 QALYs) but was more costly ($171,798) than early implantation (8.55 QALYs; $165,436).
• The incremental cost-effectiveness ratio for watchful waiting was $12,724 per QALY.
• Results were sensitive to variations in quality-adjusted survival and atrioventricular node recovery rates.

Conclusions:

• Watchful waiting is a cost-effective strategy for managing acute atrioventricular block post-valve surgery compared to early pacemaker insertion.
• While cost-effective for the population, clinical risk scores are needed for personalized patient decision-making regarding pacemaker timing.