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Left internal mammary artery flap aortoplasty
M Hallberg M1, A C Henze, J B Thuren
1The Department of Pediatrics, University Hospital, Uppsala, Sweden.
Texas Heart Institute Journal
|January 1, 1992
Summary
This study presents a novel surgical technique using a left internal mammary artery flap to repair aortic coarctation in young patients. The procedure effectively widened the aorta, reduced hypertension, and showed no complications at follow-up.
Area of Science:
- Cardiovascular Surgery
- Pediatric Cardiology
- Thoracic Surgery
Background:
- Aortic coarctation (CoA) and isthmic hypoplasia present complex surgical challenges, particularly in delayed repairs.
- Traditional repair methods may have limitations in achieving adequate aortic widening.
Purpose of the Study:
- To evaluate the efficacy and safety of using an in situ left internal mammary artery (LIMA) flap for aortic widening in patients with preductal aortic coarctation and isthmic hypoplasia.
- To assess the long-term hemodynamic and anatomical outcomes of this reconstructive technique.
Main Methods:
- A longitudinal aortotomy was performed to resect the coarctation ridge.
- An in situ left internal mammary artery flap was utilized to augment and widen the aorta.
- The study included 14 pediatric patients aged 9-18 years with preductal aortic coarctation and isthmic hypoplasia.
Main Results:
- No surgical complications were reported in any of the 14 patients.
- A significant average decrease of 8.8 mmHg in systolic blood pressure across the repair site was observed at 6-month follow-up.
- All patients demonstrated reduced arterial hypertension at rest and during exercise, with palpable femoral pulses and no aneurysm formation on imaging.
Conclusions:
- The LIMA flap technique provides effective circumferential aortic widening for complex coarctation and hypoplasia, especially in delayed repairs.
- This autogenous arterial grafting method is a viable alternative when classic end-to-end anastomosis is not anatomically suitable, provided the LIMA is of adequate caliber and quality.