Selective suction and pressure-regulated retroinfusion: an effective and safe approach to retrograde protection against myocardial ischemia in patients undergoing normal and high risk percutaneous transluminal coronary angioplasty.

Abstract:

OBJECTIVES:We sought to study the safety, feasibility and efficacy of selective suction and pressure-regulated retroinfusion to protect against myocardial ischemia in patients undergoing normal risk and high risk balloon angioplasty. BACKGROUND:In a pig model of acute myocardial ischemia it was previously shown that use of selective suction and pressure-regulated retroinfusion was able to substantially preserve regional myocardial function during ischemia with a higher efficacy than that obtained with unselective synchronized retroperfusion. METHODS:In 42 patients with normal risk (n = 27) or high risk (n = 15) percutaneous transluminal coronary angioplasty (PTCA), alternate balloon inflations of the left anterior descending coronary artery (60 s) were either supported or not supported by selective suction and pressure-regulated retroinfusion of the anterior interventricular vein. In an additional group of 10 patients with normal risk, retroinfusion was directly compared with autoperfusion during 10 min of ischemia. RESULTS:Balloon inflations without retroinfusion resulted in a decrease of regional myocardial function in the ischemic zone to 13% of baseline. In contrast, regional myocardial function was preserved at 76% of baseline (p < 0.05) during balloon inflation supported by retroinfusion. This preservation of regional myocardial function by retroinfusion was maintained during 10 min of ischemia with at least similar efficacy compared with autoperfusion. With retroinfusion, hemodynamic variables were stabilized in normal risk and high risk patients. No complications related to the catheterization of the anterior interventricular vein using a femoral approach (95% success rate) were observed, and clinical follow-up after 3 to 6 months was uneventful with regard to the coronary intervention. CONCLUSIONS:Use of selective suction and pressure-regulated retroinfusion was feasible and safe and had a high efficacy for preserving regional myocardial function and hemodynamic variables during PTCA in normal risk and selected high risk patients.

journal_name

J Am Coll Cardiol

authors

Boekstegers P,Giehrl W,von Degenfeld G,Steinbeck G

doi

10.1016/s0735-1097(98)00135-1

subject

Has Abstract

pub_date

1998-06-01 00:00:00

pages

1525-33

issue

7

eissn

0735-1097

issn

1558-3597

pii

S0735109798001351

journal_volume

31

pub_type

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