Interrupted aortic arch: factors influencing prognosis

Area of Science:

• Pediatric Cardiology
• Congenital Heart Defects
• Surgical Outcomes

Background:

• Interrupted aortic arch is a severe congenital heart defect requiring surgical intervention.
• Perioperative mortality rates for this condition have historically been high.
• Identifying prognostic factors is crucial for improving surgical outcomes.

Purpose of the Study:

• To review cases of infants with interrupted aortic arch operated on between 1969 and 1974.
• To identify factors influencing perioperative survival.
• To determine the impact of surgical technique and patient characteristics on prognosis.

Main Methods:

• Retrospective review of 11 infants with interrupted aortic arch who underwent surgery.
• Analysis of patient demographics, preoperative hemodynamics, and angiographic findings.
• Evaluation of surgical approach (palliative vs. intracardiac repair) and conduit size.

Main Results:

• Eight out of 11 infants (73%) died in the perioperative period.
• Patient age, weight, hemodynamics, and anomaly type did not correlate with survival.
• Surgical approach (palliative or intracardiac repair) did not significantly impact prognosis.
• The size of the conduit used to bridge the aortic gap was the critical factor: narrow conduits were used in all non-survivors, while larger conduits were used in survivors.

Conclusions:

• Adequate conduit size is essential for successful surgical repair of interrupted aortic arch.
• Vessel diameter, not patient factors or surgical technique, was the primary determinant of perioperative survival in this cohort.
• Future surgical strategies should prioritize the use of appropriately sized grafts to improve outcomes.