Stent implantation for relief of pulmonary artery stenosis: Immediate and short-term results
| Autor: | Fuad Abbag, Ornar Galal, Fadel Al-Fadley, Ziyad M. Hijazi, Robert L. Geggel, Gerald R. Marx, Zohair Al-Halees, David Fulton |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
medicine.medical_specialty
business.industry Pulmonary artery stenosis medicine.medical_treatment Stent Balloon medicine.disease Inferior vena cava Surgery Stenosis medicine.vein Superior vena cava medicine.artery Pulmonary artery Medicine cardiovascular diseases Cardiology and Cardiovascular Medicine business Tetralogy of Fallot |
| Zdroj: | Catheterization and Cardiovascular Diagnosis. 38:16-23 |
| ISSN: | 0098-6569 |
| DOI: | 10.1002/(sici)1097-0304(199605)38:1<16::aid-ccd5>3.0.co;2-6 |
| Popis: | Our objective was to assess the immediate and short-term results of stent implantation to relieve pulmonary artery stenosis (PAS). Thirty-seven patients underwent an attempt at stent implantatlon at a medlan age of 7.0 years (range, 0.G31.4 years) and a median weight of 20.5 kg (range, 7.4-85 kg). Twenty-two patients had previous tetralogy of Fallot repair. A total of 55 stents were Implanted successfully in 36 patlents. The peak systolic gradient across the stenotic segment decreased from a mean of 43 2 20.4 mmHg prestent to 13 f 13.9 mmHg (P a:: 0.001) poststent. The diameter of the narrowest segment Increased from a mean of 4.8 f 1.6 mm to 10.5 f 2.6 mm (P ,:I 0,001). The right ventrlcular-to-aortic mean systolic pressure ratio decreased from 0.74 2 0.2 to 0.52 ? 0.1 9 (P c: 0.001). Complications included balloon rupture prior to full stent expansion in 4 patients (in 2 patients the stent was positioned in the superior vena cava, and in 2 in the inferior vena cava), distal migration of a stent which was successfully retrieved at surgery 1 mo later in 1 patient, and tethering of the stent to the balloon requiring surgical removal in 1 patient. One patient died several hours after stent placement. Sixteen patients underwent repeat catheterization at a mean follow-up interval 010.9 * 0.5years (range, 0.2-2.0years). The mean gradient across the stent for these 16 patients was 26.7 f 19.8 mmHg, and there was no change in the mean diameter (9.4 2 3.2 mm). Two patients developed stenosis related to neointimal proliferation at the stent site which was redilated successfully. In conclusion, stent irnplantation is generally safe and effective in relleving PAS. c 1996 WIIO~-LI~~. Inc |
| Databáze: | OpenAIRE |
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