Cardiopulmonary support mitigates the effects of experimental myocardial ischemia.

Abstract:

:The effectiveness of cardiopulmonary support (CPS) as a rescue method following failed angioplasty is unknown. The proximal left anterior descending (LAD) was occluded for 20 min in 21 dogs. Group 1 animals (n=15) were given CPS and group 2 animals (n=6) served as controls. During coronary occlusion, animals receiving CPS had increased mean arterial pressure (71+/- 12 vs 58+/-7 mm Hg), decreased left atrial pressure (3+/-3 vs 12+/-3 mm Hg), increased ischemic area blood flow (0.20+/-0.16 vs 0.02+/-0.04 mL/min/g) and myocardial oxygen consumption (0.014+/- 0.008 vs 0.003+/-0.006 mL O2/min/g), decreased remote area myocardial oxygen consumption (0.026+/-0.010 vs 0.091+/-0.047 mL O2/min/g), and an improved myocardial oxygen consumption index (0.60+/-0.33 vs 0.02+/-0.03) when compared with controls (p<0.05). During reperfusion (no CPS), group 1 animals had increased cardiac index (210+/-95 vs 117+/-46 mL/min/kg), renal blood flow (110+/-38% vs 53+/-45%), ischemic area blood flow (1.13+/-0.40 vs 0.58+/-0.27), and myocardial oxygen consumption (0.066+/-0.015 vs 0.032+/-0.018) when compared with controls (p<0.05). CPS improves oxidative metabolism in selective myocardial segments during coronary occlusion, promotes recovery of the postischemic myocardium, and results in improved peripheral circulation.

journal_name

Chest

journal_title

Chest

authors

Ward HB,McFalls EO,Baldwin D,Nemzek TG,Gornick CC

doi

10.1378/chest.109.3.773

subject

Has Abstract

pub_date

1996-03-01 00:00:00

pages

773-9

issue

3

eissn

0012-3692

issn

1931-3543

pii

S0012-3692(15)45868-4

journal_volume

109

pub_type

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