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Query: UMLS:C0151814 (coronary occlusion)
 3,687 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Coronary restenosis after balloon angioplasty is a slow process that develops over a few months. In some patients, with an initially successful angioplasty, an artery that originally had only moderate stenosis becomes totally occluded as a result of restenosis. This report describes 16 such patients out of 415 dilated lesions with late angiographic follow-up. Ten patients presented with stable angina pectoris, 5 had unstable angina and only one was admitted with a small myocardial infarction. Visible collaterals were present in 15 patients. Except for the patient who sustained myocardial infarction, none of the late angiograms showed the typical morphological features of acute lesion. We conclude that total coronary occlusion late after successful angioplasty of an artery that was moderately narrowed is rare. The 'restenotic' occlusion is a slow process that stimulates collateral formation and thus the risk of myocardial infarction is small.
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PMID:Total coronary artery occlusion late after successful coronary angioplasty of moderately severe lesions: incidence and clinical manifestations. 798 79

Coronary dissection and acute occlusion are serious complications of coronary angioplasty and may require emergency coronary bypass surgery or result in myocardial infarction or death of the patient. Recently, perfusion balloon catheters allowing prolonged inflations have been used to restore coronary flow after major dissection and occlusion of the artery. Forty-two consecutive patients requiring this procedure were evaluated at short and long term. A satisfactory angiographic result and clinical stabilisation were obtained in 37 cases (88%). Of the 5 immediate failures, 3 (7.1%) underwent coronary bypass surgery and 2 (4.8%) were treated conservatively. Reocclusion was observed in 4 patients (9.5%) during the hospital period; 2 underwent coronary stenting (4.8%) and the other 2 were treated medically. Myocardial infarction was observed in 11 patients (26.2%). Angiographic control was performed 6.2 +/- 3.6 months later in 20 of the 33 patients with no in-hospital complications. Coronary restenosis was observed in 12 of these cases (60%). This study shows the efficacy of perfusion balloon catheter in treating major coronary dissection and coronary occlusion during coronary angioplasty. In particular, the need for emergency coronary bypass surgery was limited. However, there was a high long-term restenosis rate which emphasises the need for careful follow-up of these patients.
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PMID:[Usefulness of perfusion balloon catheter in case of failure of coronary angioplasty: immediate and long-term results]. 833 1