Abstract

Background: Elective surgical closure of atrial septal defect (ASD) in asymptomatic children is commonly performed at 3 to 6 years of age when catheter-guided closure is not feasible. However, a recommended timing of surgical closure is not based on recent evidence. Hypothesis: Surgical ASD closure can be done safely in any age group. Methods: Asymptomatic patients with surgically closed isolated ASDs who were not indicated for catheter-guided closure in our cardiac center from 2002 to 2019 were studied. The patients were divided into 4 groups based on the age at surgery (<3 years, ≥3 to <6 years, ≥ 6 to >10 years, and ≥ 10 years). Demographic data, type of ASD, cardiopulmonary bypass time (CPBT), intensive care unit (ICU) stay, total hospitalization days, post-operative adverse events, and readmission rate were studied. Effects of creation of pericardial window (PW) was also examined. Data are shown as mean ± standard deviation. Results: Total 163 patients were studied (Table). There was no statistically significant difference in CPBT, ICU stay, or total hospitalization days among the 4 groups. There were no mortalities. Incidence of adverse events during hospitalization was low in < 6 years (1.9 to 4.2%) but higher in older ages (10.8 to 13.5%). Readmission rate was higher in younger groups: 18.6% in < 3 years old, 13.2% in ≥ 3 and < 6 years old, 8.0% in ≥ 6 and < 10 years, and 10.8% in ≥ 10 years, which was mainly due to pericardial effusion (PE). Total 18 patients developed PE postoperatively, 14 of whom were readmitted for treatment. With the creation of PW at the time of initial surgery, the incidence of PE and readmission rate were significantly reduced compared with without PW, especially in younger children. There was no complication due to PW. Conclusion: Surgical ASD closure can be performed safely even in younger children with ages <3 years, especially with creation of PW. Routine application of PW markedly reduced postoperative adverse events in surgical ASD closure.

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