Coronary angioplasty with 7F guiding catheters
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R Villavicencio1, B Meier, A K Pande
1Cardiology Center, University Hospital, Geneva, Switzerland.
Insights
Percutaneous transluminal coronary angioplasty (PTCA) using 7F guiding catheters achieved a 95% success rate. This method offers high efficacy with reduced complications like coronary wedging and smaller puncture sites.
Area of Science:
- Cardiology
- Interventional Cardiology
- Medical Devices
Background:
- Percutaneous transluminal coronary angioplasty (PTCA) is a common procedure for treating coronary artery disease.
- Guiding catheters are essential tools in PTCA, with varying sizes impacting procedural outcomes.
- The efficacy and safety of smaller caliber guiding catheters, such as 7F, require ongoing evaluation.
Purpose of the Study:
- To evaluate the performance of 7F guiding catheters in a large patient cohort undergoing PTCA.
- To assess the technical success rates, complication profiles, and specific challenges associated with 7F guiding catheter use.
Main Methods:
- A retrospective analysis of 300 patients undergoing PTCA using 7F guiding catheters.
- Data collection included patient demographics, lesion characteristics, procedural techniques (monorail vs. balloon-on-a-wire), and outcomes.
- Success rates were analyzed for non-total and occluded lesions, with complications meticulously recorded.
Main Results:
- A high technical success rate of 98% was observed for 325 non-total lesions.
- The overall primary success rate for PTCA with 7F guiding catheters was 95%.
- Complications included in-hospital death (1.7%), myocardial infarction (4%), and inguinal hematoma (1.7%).
Conclusions:
- 7F guiding catheters demonstrate a high success rate for PTCA, comparable to larger catheters.
- Their use is associated with reduced coronary wedging and smaller arterial puncture sites, potentially improving patient safety.
- The 7F guiding catheter is a safe and effective option for a wide range of coronary interventions.
Abstract:
The performance of 7F guiding catheters for percutaneous transluminal coronary angioplasty (PTCA) was investigated in 300 patients. A total of 233 patients had single-vessel PTCA and 67 had multivessel PTCA. Angioplasty was attempted for 371 lesions (141 [38%] in the left anterior descending, 124 [33%] in the right coronary artery, and 95 [26%] in the left circumflex coronary artery or their branches; 10 [3%] in a bypass graft, and one in the left main stem). The mean degree of stenosis was 86 +/- 11% (range 60% to 100%). The monorail technique was used in 83%, and balloon-on-a-wire devices were used in 6% of cases. The balloon sizes varied between 2.0 and 4.25 mm. There was a 98% technical success rate for the 325 nontotal lesions. Five could not be crossed with the wire. Exchange to an 8F guiding catheter was done in four cases (1.2%) and yielded success in two of them. In 46 occlusions the success rate was 72%. Nine were failures due to an inability to cross the wire, another two were balloon failures, and in two cases the residual stenosis was greater than 50%. The mean residual stenosis of successful cases was 24 +/- 18%. Overall, the primary success rate was 95%. The complications were: in-hospital death in five patients (1.7%); infarction in 12 (4%); emergency bypass surgery in one; and significant inguinal hematoma in five (1.7%). Coronary angioplasty through 7F guiding catheters yields a high success rate with less coronary wedging and a smaller puncture hole.