- Trends in Regional Disparities in Cardiovascular Surgery and Mortality in Korea: A National Cross-sectional Study
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Dal-Lae Jin, Kyoung-Hoon Kim, Euy Suk Chung, Seok-Jun Yoon
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J Prev Med Public Health. 2024;57(3):260-268. Published online May 30, 2024
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DOI: https://doi.org/10.3961/jpmph.24.057
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 Abstract
Summary
 PDF Supplementary Material
- Objectives
Regional disparities in cardiovascular care in Korea have led to uneven patient outcomes. Despite the growing need for and access to procedures, few studies have linked regional service availability to mortality rates. This study analyzed regional variation in the utilization of major cardiovascular procedures and their associations with short-term mortality to provide better evidence regarding the relationship between healthcare resource distribution and patient survival.
Methods
A cross-sectional study was conducted using nationwide claims data for patients who underwent coronary artery bypass grafting (CABG), percutaneous coronary intervention (PCI), stent insertion, or aortic aneurysm resection in 2022. Regional variation was assessed by the relevance index (RI). The associations between the regional RI and 30-day mortality were analyzed.
Results
The RI was lowest for aortic aneurysm resection (mean, 26.2; standard deviation, 26.1), indicating the most uneven regional distribution among the surgical procedures. Patients undergoing this procedure in regions with higher RIs showed significantly lower 30-day mortality (adjusted odds ratio [aOR], 0.73; 95% confidence interval, 0.55 to 0.96; p=0.026) versus those with lower RIs. This suggests that cardiovascular surgery regional availability, as measured by RI, has an impact on mortality rates for certain complex surgical procedures. The RI was not associated with significant mortality differences for more widely available procedures like CABG (aOR, 0.96), PCI (aOR, 1.00), or stent insertion (aOR, 0.91).
Conclusions
Significant regional variation and underutilization of cardiovascular surgery were found, with reduced access linked to worse mortality for complex procedures. Disparities should be addressed through collaboration among hospitals and policy efforts to improve outcomes.
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Summary
Korean summary
심혈관 관련 수술을 대상으로 지역적 불균형을 분석한 결과, 관상동맥우회술, 경피적 관상동맥중재술, 스텐트 삽입술은 전국적으로 광범위하게 분포되었다. 반면에 대동맥류 절제술은 지역적 불균형이 발생하였고, 사망률 또한 유의한 차이가 있었다. 따라서 의료 격차 해소를 위해 병원 간 협력체계 구축, 지역 균형적 의료자원 확충 등 정책적 노력이 필요하다
Key Message
An analysis of regional disparities in cardiovascular surgeries revealed that coronary artery bypass grafting (CABG), percutaneous coronary intervention (PCI), and stent insertion procedures were widely distributed nationwide. However, there was a regional imbalance in aortic aneurysm resection (AAR) surgeries, which also showed significant differences in mortality rates. Therefore, policy efforts are needed to bridge the healthcare gap, such as establishing collaborative systems among hospitals and ensuring a balanced distribution of medical resources across regions.
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KSPM
