Postoperative pathology of congenital heart disease. I. Complete atrio-ventricular canal

Area of Science:

• Cardiology
• Pediatric Surgery
• Pathology

Background:

• Complete atrioventricular canal is a complex congenital heart defect.
• Surgical correction aims to improve outcomes but carries risks.
• Postoperative complications and mortality require thorough investigation.

Purpose of the Study:

• To describe the postoperative pathology in patients who died after complete atrioventricular canal correction.
• To identify causes of death and associated conditions.
• To analyze the incidence and timing of pulmonary obstructive vascular disease.

Main Methods:

• Retrospective analysis of 17 patients with complete atrioventricular canal who died post-total correction.
• Review of pathological findings and clinical data.
• Correlation of specific anomalies with causes of death.

Main Results:

• Deaths occurred due to late prosthetic dysfunction (3 patients), residual cardiac anomalies (4 patients), myocardial infarction (3 patients), inadequate postoperative care (3 patients), and pulmonary obstructive vascular disease (4 patients).
• Pulmonary obstructive vascular disease was associated with residual anomalies in 2 cases and occurred in isolation in 4 cases.
• Pulmonary obstructive vascular disease can develop before one year of age in some patients with Down syndrome.

Conclusions:

• Causes of death after complete atrioventricular canal correction are multifactorial, including prosthetic issues, residual defects, and pulmonary vascular disease.
• Early development of pulmonary obstructive vascular disease is a concern in pediatric patients, particularly those with Down syndrome.
• Careful postoperative management and surveillance are crucial to mitigate mortality risks.