Damus–Kaye–Stansel procedure

Damus–Kaye–Stansel Procedure

The Damus–Kaye–Stansel procedureis a surgical technique used primarily in the management of complex congenital heart defects, particularly those involving the left ventricular outflow tract. This procedure is named after the surgeons Paul Damus, Michael Kaye, and Harold Stansel, who contributed to its development.

Indications

The Damus–Kaye–Stansel procedure is indicated in patients with:

• Hypoplastic Left Heart Syndrome (HLHS)
• Double outlet right ventricle (DORV) with subaortic stenosis
• Transposition of the great arteries (TGA) with ventricular septal defect (VSD) and left ventricular outflow tract obstruction

Surgical Technique

The procedure involves the anastomosis of the main pulmonary artery to the ascending aorta. This effectively bypasses the left ventricular outflow tract, allowing systemic blood flow to be directed from the right ventricle. The procedure is often performed in conjunction with other surgeries, such as the Norwood procedure or the Fontan procedure, depending on the specific cardiac anatomy and physiology of the patient.

Steps

1. Median Sternotomy: The procedure begins with a median sternotomy to access the heart. 2. Cardiopulmonary Bypass: The patient is placed on cardiopulmonary bypass to maintain circulation during the surgery. 3. Aortic Transection: The ascending aorta is transected above the coronary arteries. 4. Pulmonary Artery Transection: The main pulmonary artery is transected. 5. Anastomosis: The proximal end of the pulmonary artery is anastomosed to the distal end of the aorta. 6. Closure: The procedure is completed by closing the incisions and weaning the patient off cardiopulmonary bypass.

Postoperative Care

Postoperative care involves monitoring for complications such as:

• Arrhythmias
• Residual shunts
• Pulmonary hypertension

Patients may require additional interventions or surgeries as they grow, particularly if they have undergone staged palliation for single ventricle physiology.

Outcomes

The Damus–Kaye–Stansel procedure has been shown to improve survival and quality of life in patients with complex congenital heart defects. Long-term follow-up is essential to monitor cardiac function and address any complications that may arise.

Also see

• Congenital Heart Defect
• Norwood Procedure
• Fontan Procedure
• Cardiopulmonary Bypass