[Protective function of collaterals in percutaneous transluminal coronary angioplasty].
With increasing application of PTCA, it will become necessary to identify patients (p) who can be dilated without expensive surgical standby. In 82 p with angina pectoris and stress-induced ischemia and without transmural myocardial infarction, the following parameters were measured during coronary angioplasty (PTCA): angina pectoris (AP), epicardial ST-segment displacement (via long wire), and aortic pressure. In 26 p, the affected vessel showed retrograde filling (A) via collaterals (CL). In 24 p CL were identified without retrograde filling (B) and 32 p were without CL (C). The balloon was inflated three to eight times over periods of 30 to 90 s. [table; see text]


CONCLUSIONS
In vessel occlusion caused by PTCA, a myocardial infarction will occur in more than 80% of p without visible CL, and rarely in the presence of CL. Therefore, PTCA of vessels with retrograde filling appears safe. Furthermore randomized studies are necessary to determine if strict surgical standby is required in such cases.
Reifart
N
N
Rotes-Kreuz-Krankenhaus, Frankfurt/Main.
Störger
H
H
Preusler
W
W
D000787:Angina Pectoris / Q000628:therapy; D015906:Angioplasty, Balloon, Coronary; D003097:Collateral Circulation / Q000502:physiology*; D017023:Coronary Angiography; D003326:Coronary Circulation / Q000502:physiology*; D003327:Coronary Disease / Q000000981:diagnostic imaging / Q000628:therapy*; D004562:Electrocardiography; D006801:Humans; D011446:Prospective Studies
Die Schutzfunktion von Kollateralen während perkutaner transluminaler Koronarangioplastie.