Patterns of systemic oxygen utilization in cardiac ischemic syndromes: oxygen utilization in cardiac ischemia.

Abstract:

:Cardiac ischemia can present as distinctive clinical syndromes such as acute myocardial infarction, cardiogenic shock, sudden cardiac arrest or chronic congestive heart failure. All of the clinical syndromes share common pathophysiological events including reduction of cardiac output and systemic oxygen delivery (DO2) and activation of neurohumoral stress response. The balance between systemic DO2 and oxygen consumption (VO2) is maintained by modification of systemic oxygen utilization and demands which are essential for tissue viability and survival in cardiac ischemic syndromes. Low blood flow and the neurohumoral response may influence cellular metabolism (e.g., acute ischemia preconditioning and chronic downregulation of aerobic metabolism) and microcirculatory perfusion patterns to decrease systemic oxygen demands and VO2 in harmony with low cardiac output and systemic DO2. The clinical relevance of these metabolic adaptations and their influence on the outcome in cardiac ischemic syndromes remains unknown.

journal_name

Resuscitation

journal_title

Resuscitation

authors

Rady MY

doi

10.1016/0300-9572(94)90065-5

subject

Has Abstract

pub_date

1994-12-01 00:00:00

pages

205-14

issue

3

eissn

0300-9572

issn

1873-1570

pii

0300-9572(94)90065-5

journal_volume

28

pub_type

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