Patients under consideration for an ASO always have an ASD: a secundum ASD, a patent foramen ovale or an ASD after septostomy. This defect is normally closed, either directly or by patch. As part of the procedure, a residual defect may be left intentionally, to make the postoperative course smoother, particularly in patients in whom PVR might fluctuate and prompt a haemodynamic crisis. However, there is insufficient evidence to make a recommendation in favour or against this practice.

Open in new tab

Recommendations for management of cardiopulmonary bypass

ASO: arterial switch operation; DHCA: deep hypothermic circulatory arrest; ECG: electrocardiogram.

^aClass of recommendation.

^bLevel of evidence.

^cReferences.

Open in new tab

Recommendations for management of cardiopulmonary bypass

ASO: arterial switch operation; DHCA: deep hypothermic circulatory arrest; ECG: electrocardiogram.

^aClass of recommendation.

^bLevel of evidence.

^cReferences.

Open in new tab

Recommendations on surgical technique

ASO: arterial switch operation; RVOT: right ventricular outflow tract.

^aClass of recommendation.

^bLevel of evidence.

^cReferences.

Open in new tab

Recommendations on surgical technique

ASO: arterial switch operation; RVOT: right ventricular outflow tract.

^aClass of recommendation.

^bLevel of evidence.

^cReferences.