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Progression of coronary artery disease after percutaneous transluminal coronary angioplasty
1Section of Cardiology, Hines Veterans Administration Hospital, IL 60141.
Insights
Restenosis and new coronary lesions are common after percutaneous transluminal coronary angioplasty (PTCA), often leading to recurrent angina. New lesions frequently develop in the artery treated with PTCA, indicating a need for ongoing monitoring.
Area of Science:
- Cardiology
- Interventional Cardiology
Background:
- Percutaneous transluminal coronary angioplasty (PTCA) is a common procedure for coronary artery disease.
- Long-term outcomes and the incidence of new vascular issues post-PTCA require further investigation.
Purpose of the Study:
- To evaluate the incidence of restenosis and new/progressive coronary lesions after PTCA.
- To determine the clinical presentation and risk factors associated with these findings.
Main Methods:
- Coronary arteriography was performed in 39 patients 1 to 20 months post-PTCA.
- Restenosis was defined as >50% loss of PTCA-gained diameter.
- New or progressive lesions were defined as >20% obstruction in previously normal or mildly diseased segments.
Main Results:
- 90% of patients experienced recurrent angina or myocardial infarction.
- 49% of patients showed restenosis at the PTCA site.
- 20 patients developed new or progressive lesions, more frequently in the PTCA-treated artery (p<0.02).
Conclusions:
- Both restenosis and new/progressive coronary lesions are frequent after PTCA.
- New lesions or progression of existing ones often occur in the vessel subjected to PTCA.
- These findings highlight the need for vigilant follow-up in patients post-PTCA.
Abstract:
Thirty-nine patients underwent coronary arteriography 1 to 20 months (mean 7 months) after percutaneous transluminal coronary angioplasty (PTCA). At the time of the repeat study, 35 patients (90%) had recurrent angina or myocardial infarction, and 4 patients (10%) were asymptomatic. Restenosis, defined as greater than 50% loss of PTCA gained diameter, was found in 19 patients (49%). In addition, 20 patients had new lesions or marked progression of existing lesions (defined as greater than 20% or increasing greater than 20% obstruction in coronary diameter) in the previously normal or mildly diseased coronary segments. The new or progressive lesions occurred both in patients with restenosis at the PTCA site (nine of 19) and in patients without restenosis (11 of 20). New or progressive lesions tended to occur more commonly in the artery on which PTCA was performed (13 of 40) than in the artery that did not have PTCA (10 of 77) (p less than 0.02 by chi 2). In arteries that had PTCA, new or progressive lesions occurred more often in the segment proximal to the angioplasty site (seven of 13 or 54%) than in the peri-PTCA segment (two of 13 or 15%) and in the segments distal to it (four of 13 or 31%), but this observation did not reach statistical significance. No other clinical, angiographic, or PTCA procedure variables affected the occurrence of new or progressive lesions. In patients with recurrent angina or myocardial infarction after PTCA, both restenosis and new or progressive lesions are common. New lesions or marked progression of existing lesions tended to occur in the vessel subjected to PTCA.(ABSTRACT TRUNCATED AT 250 WORDS)