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Percutaneous transluminal dilatation of coronary artery stenosis
Insights
Percutaneous transluminal dilatation (PTD) successfully treated coronary artery stenosis in 68% of patients. This minimally invasive procedure is an adjunct to bypass grafting, requiring careful patient selection and surgical standby.
Area of Science:
- Cardiovascular Medicine
- Interventional Cardiology
- Vascular Surgery
Background:
- Coronary artery disease (CAD) remains a leading cause of morbidity and mortality.
- Percutaneous transluminal dilatation (PTD) emerged as a novel therapeutic option for CAD.
- The role of PTD as an adjunct or alternative to coronary bypass grafting (CABG) requires further elucidation.
Purpose of the Study:
- To evaluate the efficacy and safety of Percutaneous transluminal dilatation (PTD) for treating coronary stenosis.
- To determine the success rate and complication profile of PTD.
- To assess the suitability of PTD in patients with recurrent angina post-CABG.
Main Methods:
- Percutaneous transluminal dilatation (PTD) was performed using a balloon-tipped catheter introduced via a peripheral artery.
- The study included 56 patients with coronary stenosis, with some undergoing PTD during coronary arteriotomy.
- Cardiosurgical standby was maintained throughout the procedures.
Main Results:
- PTD was successfully achieved in 38 out of 56 patients (68%).
- Complications included abrupt closure or infarction in 11% necessitating emergency revascularization; no deaths occurred.
- PTD showed success in 6 of 9 patients with recurrent angina after prior CABG; intraoperative PTD results were inconclusive.
Conclusions:
- PTD is a viable addition to coronary bypass grafting for managing coronary artery disease.
- Optimal patient selection includes those with recent angina, narrow proximal stenosis, and minimal calcification.
- Cardiosurgical standby is crucial, with best outcomes observed in single-vessel disease patients.
Abstract:
Percutaneous transluminal dilatation (PTD) of coronary stenosis is performed by means of a balloon-tipped catheter introduced from a peripheral artery. PTD was attempted in 56 patients; stenosis was successfully dilated in 38 patients (68%). The method failed in 18 patients: in 6 (11%) of them an abrupt closure of the stenosed artery or a beginning infarction necessitated an emergency revascularization. There were no serious complications or deaths; one patient developed a transmural infarction in spite of the immediate bypass grafting. PTD was also successful in 6 out of 9 patients with recurrent angina following previous coronary bypass grafting. Intraoperative dilatation by coronary arteriotomy was attempted in 6 patients, but the results were inconclusive. PTD is a new method of treatment of coronary artery disease; it represents an addition rather than an alternative to coronary bypass grafting. The decision for PTD should be made jointly by cardiologist and surgeon; the ideal patient has a short history of angina with narrow, proximal stenosis without any calcifications. Cardiosurgical standby is mandatory during PTD; the results are best and the risk lowest in patients with single vessel disease.