Differences in Short-Term Outcomes and Hospital-Based Resource Utilization Between Septal Reduction Strategies for...

Area of Science:

• Cardiology
• Interventional Cardiology
• Cardiac Surgery

Background:

• Obstructive hypertrophic cardiomyopathy (OHCM) presents treatment options with clinical equipoise.
• Alcohol septal ablation (ASA) and septal myectomy (SM) are primary septal reduction strategies.
• Healthcare resource utilization and shared decision-making necessitate comparative outcome analysis.

Purpose of the Study:

• To compare short-term outcomes and in-hospital resource utilization between ASA and SM for OHCM.
• To evaluate inpatient mortality, 90-day readmission rates, length of stay (LOS), and costs.
• To inform healthcare resource optimization and patient-centered care.

Main Methods:

• Retrospective observational analysis of the US Nationwide Readmissions Database (2012-2014).
• Inclusion of adult patients undergoing isolated septal reduction for OHCM.
• Comparison of ASA versus SM groups regarding mortality, readmissions, LOS, and costs.

Main Results:

• ASA was performed in 49.5% and SM in 50.5% of 2250 patients.
• Inpatient mortality rates were similar (ASA 1.0% vs. SM 0.9%, P=.30).
• 90-day readmission rates were comparable (ASA 11.8% vs. SM 14.9%, P=.16).
• ASA demonstrated significantly lower index admission LOS (3.9 vs. 7.6 days) and costs (US $20,322 vs. US $39,470; P<.001).
• Combined index and readmission data showed significantly lower total LOS and costs for ASA.

Conclusions:

• ASA offers similar short-term clinical outcomes to SM in OHCM patients.
• ASA is associated with substantially lower hospitalization costs and length of stay.
• These findings support ASA as a potentially more resource-efficient strategy for selected OHCM patients.