Initial coronary occlusion improves tolerance to subsequent prolonged balloon inflations.
An acute coronary occlusion with severe ischemic signs during percutaneous transluminal coronary angioplasty was successfully treated with a long balloon inflation. Subsequent balloon inflations did not produce ischemic signs. Distal coronary occlusion pressure rose significantly during balloon inflations of more than 2 min. It is hypothesized that an initial ischemic occlusion may improve tolerance to prolonged coronary occlusions. The underlying mechanism may be that further coronary collateral circulation is recruited over time.
Heibig
J
J
Division of Cardiology, Baylor College of Medicine, Veterans Administration Medical Center, Houston, Texas 77030.
Bolli
R
R
Harris
S
S
D000787:Angina Pectoris / Q000209:etiology / Q000628:therapy; D000800:Angioplasty, Balloon / Q000009:adverse effects* / Q000379:methods; D001794:Blood Pressure; D003326:Coronary Circulation; D003327:Coronary Disease / Q000628:therapy*; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D013997:Time Factors