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Research Article: Factors associated with poor outcomes after congenital heart surgery in low-resource setting in Pakistan: insight from the IQIC Registry – a descriptive analysis

Date Published: 2023-12-09

Abstract:
Objective This study aimed to assess the International Quality Improvement Collaborative single-site data from a developing country to identify trends in outcomes and factors associated with poor outcomes. Design Retrospective descriptive study. Setting The National Institute of Cardiovascular Diseases, Karachi, Pakistan. Participants Patients undergoing surgery for congenital heart disease (CHD). Outcome measure Key factors were examined, including preoperative, procedural and demographic data, as well as surgical complications and outcomes. We identified risk factors for mortality, bacterial sepsis and 30-day mortality using multivariable logistic regression. Results A total of 3367 CHD surgical cases were evaluated; of these, 59.4% (2001) were male and 82.8% (2787) were between the ages of 1 and 17 years. Only 0.2% (n=6) were infants (?30 days) and 2.3% (n=77) were adults (?18 years). The in-hospital mortality rate was 6.7% (n=224), and 4.4% (n=147) and 0.8% (n=27) had bacterial sepsis and surgical site infections, respectively. The 30-day status was known for 90.8% (n=3058) of the patients, of whom 91.6% (n=2800) were alive. On multivariable analysis, the adjusted OR for in-hospital mortality was 0.40 (0.29–0.56) for teenagers compared with infancy/childhood and 1.95 (1.45–2.61) for patients with oxygen saturation <85%. Compared with Risk Adjustment for Congenital Heart Surgery (RACHS-1) risk category 1, the adjusted OR for in-hospital mortality was 1.78 (1.1–2.87) for RACHS-1 risk category 3 and 2.92 (1.03–8.31) for categories 4–6. The adjusted OR for 30-day mortality was 0.40 (0.30–0.55) for teenagers and 1.52 (1.16–1.98) for patients with oxygen saturation <85%. The 30-day mortality rate was significantly higher in RACHS-1 risk category 3 compared with category 1, with an adjusted OR of 1.64 (1.06–2.55). Conclusions We observed a high prevalence of postoperative infections and mortality, especially for high-risk procedures, according to RACHS-1 risk category, in infancy/childhood, in children with genetic syndrome or those with low oxygen saturation (<85%).

Introduction:
Congenital heart disease (CHD) has become a significant public health concern worldwide. 1 With the world population nearing eight?billion, the demand for CHD centres has increased. 2 3 According to the estimates of the Global Burden of Disease (GBD) study, the age-standardised prevalence rate of CHD was 163.9 per 100?000 for the South Asian region in 2017. 4 According to GBD estimates for 2019, Nigeria, China, Pakistan and India account for 39.7% of global deaths due to CHD, with 11 000 (7000–19 000) deaths in…

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