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[Comparison of surgical techniques and various suture materials for correction of aortic isthmus stenosis]
1Universitäts-Kinderklinik, Wien.
Insights
The subclavian flap technique for aortic coarctation repair shows better Doppler-ultrasound results. Absorbable polydioxanone sutures promote normal growth at the repair site without complications.
Area of Science:
- Pediatric Cardiac Surgery
- Vascular Surgery
- Medical Device Technology
Background:
- Coarctation of the aorta repair requires careful surgical technique and material selection.
- Long-term outcomes of different repair methods and suture materials are crucial for pediatric patients.
Purpose of the Study:
- To compare the efficacy of subclavian flap repair versus resection and end-to-end repair for coarctation of the aorta.
- To evaluate the impact of polydioxanone (PDS) absorbable sutures versus polypropylene (Prolene) sutures on surgical outcomes.
Main Methods:
- Clinical examination and Doppler ultrasound in 31 children post-aortic coarctation repair.
- Comparison of subclavian flap repair (16 infants) and resection/end-to-end repair (15 infants).
- Analysis of suture material effects: PDS vs. Prolene in both techniques.
Main Results:
- Subclavian flap repair resulted in significantly lower Doppler-echocardiographically derived gradients (p < 0.05).
- Arm length discrepancy was noted after subclavian flap repair, but without ischemic complications.
- Polydioxanone sutures were associated with wider aortic arch and isthmus morphology in both techniques.
- No anastomotic aneurysms were observed with polydioxanone sutures.
Conclusions:
- Subclavian flap repair demonstrates superior results regarding anastomotic region gradients.
- Absorbable polydioxanone sutures facilitate normal anastomotic site growth and prevent vascular complications.
Unlabelled:
Clinical examination and Doppler ultrasound were performed in 31 children after repair of coarctation of the aorta. Median postoperative follow-up period was 4.5 years. The aim of our study was a comparison of different operation techniques and suture materials. In 16 infants subclavian flap repair had been performed using polydioxanone absorbable sutures (PDS) in 8 cases and polypropylene (Prolene) sutures in the other 8 cases. Resection and end-to-end repair had been carried out in 8 infants using PDS and in 7 using Prolene sutures. Doppler-echocardiographically derived gradients across the reconstructed aorta were significantly lower in infants operated with the subclavian flap technique (p < 0.05). The length of the arm on the side of the subclavian flap operation was shorter (median 1.2 cm), but there were no signs of ischaemic complications. Using PDS sutures the aortic arch and the aortic isthmus were each morphologically significantly wider in both operation techniques. Noninvasive two-dimensional echocardiography demonstrated good anatomical repair and no anastomotic aneurysm formation after aortic repair using polydioxanone.
Conclusion:
Regarding the doppler-echocardiographically derived gradients in the anastomotic region this intermediate follow-up study reveals better results using the subclavian flap technique; absorbable polydioxanone sutures favour normal growth of the anastomotic site without vascular complications.