Resternotomy in patients with valved conduits adherent to the sternum.

Area of Science:

• Cardiology
• Pediatric Cardiac Surgery
• Thoracic Surgery

Background:

• Valved conduits frequently adhere to the sternum after initial cardiac surgery.
• Resternotomy in these patients poses a risk of conduit injury.
• Reoperations are often necessary due to conduit degeneration or somatic growth.

Purpose of the Study:

• To evaluate a modified sternal osteotomy technique for resternotomy in patients with sternal-adherent valved conduits.
• To assess the safety and efficacy of this approach in preventing conduit injury.

Main Methods:

• A cohort of 22 pediatric patients with sternal-adherent valved conduits underwent resternotomy.
• An initial group (17 patients) had sternal opening using a standard chisel, with complications noted.
• A modified technique involved chiseling the inner sternal table above and below the conduit, leaving it attached to minimize manipulation.

Main Results:

• The standard chiseling method resulted in conduit neointimal collapse (2 patients) and tear (3 patients), necessitating emergent femoral cardiopulmonary bypass.
• The modified technique in the final 5 patients avoided conduit injury and allowed for uneventful cardiopulmonary bypass and operation.
• This suggests improved safety in managing sternal-adherent valved conduits.

Conclusions:

• A modified sternal chiseling technique offers a safer alternative for resternotomy in patients with sternal-adherent valved conduits.
• This approach minimizes the risk of conduit injury during reoperation.
• It facilitates successful cardiopulmonary bypass and surgical intervention in complex pediatric cardiac cases.