myocardial ischemia


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Related to myocardial ischemia: myocardial infarction

ischemia

 [is-ke´me-ah]
deficiency of blood in a part, due to functional constriction or actual obstruction of a blood vessel. adj., adj ische´mic.
myocardial ischemia deficiency of blood supply to the heart muscle.

my·o·car·di·al is·che·mi·a

inadequate circulation of blood to the myocardium, usually as a result of coronary artery disease.
See also: angina pectoris, myocardial infarction.

myocardial ischemia

Hypoxia of myocardium, characterized by ↑ TNF-β, local production of superoxide anions, ↓ coronary vasodilation, and myocardial necrosis; if administered at the time of ischemia, recombinant TNF ↓ circulating superoxide anions, maintains endothelial-dependent coronary relaxation, ↓ myocardial injury mediated by endogenous TNF

my·o·car·di·al is·che·mi·a

(MI) (mīō-kahrdē-ăl is-kēmē-ă)
Inadequate circulation of blood to the myocardium.
See also: angina pectoris, myocardial infarction
References in periodicals archive ?
In these patients, with clinical presentation of ongoing myocardial ischemia, a primary percutaneous coronary intervention strategy should be indicated to prevent complications and mortality, because these patients are at higher risk than others with uncomplicated myocardial infarction with ST elevation.
Jin, "Effects of edaravone on the expression of [beta]-defensin-2 mRNA in lung tissue of rats with myocardial ischemia reperfusion," Molecular Medicine Reports, vol.
Many times careful attention to the ST-T and QRS morphology, the leads involved and clinical setting in which the ST segment changes occurring are helpful in differentiating these pseudoinfarct patterns from myocardial ischemia. For example in the presence of P-R depression or prominent atrial repolarization wave, measuring the ST segment deviation relative to the TP segment results in an inaccurate measurement.
After stress testing, revascularization will be considered in patients with moderate to severe myocardial ischemia (summed stress score [greater than or equal to] 9) or abnormal stress ECG.
Liu, "Atorvastatin post-conditioning attenuates myocardial ischemia reperfusion injury via inhibiting endoplasmic reticulum stress-related apoptosis," Shock, vol.
However, asphyxia itself could potentially have adverse outcomes on the neonatal heart; nevertheless, oxidative effect of reoxigenation may cause severe cardiovascular consequences with high morbidity and mortality which is due to degradation of cardiac myosin light chain 1 protein (MLC1) by matrix metalloproteinase-2 (MMP-2).13,14 However, myocardial ischemia or hypoxia after birth asphyxia is a well-known cause of cardiac dysfunction; nevertheless, other causes such as pulmonary hypertension and patent arterial duct would play an important role.15-17 We found significant statistical relationship between diastolic dysfunction and both pulmonary hypertension and patent arterial duct.
[17] and GPBB [10]--have been analyzed for the clinical diagnosis of myocardial ischemia within the first 1-3 h after the onset of chest pain.
Correlation of echocardiographic left atrial abnormality with myocardial ischemia during myocardial perfusion assessment in patients with left bundle branch block.
Myocardial ischemia and its related mechanisms, as well as the determinants for this disease, have been partly studied (8,9).
The basic principle of this test involves the N-terminal region of human albumin and its inherent affinity for the cobalt metal ion (the so-called albumin cobalt binding, or ACB assay), the premise being that during myocardial ischemia, the albumin cobalt binding affinity is reduced due to an N-terminal modification of albumin [1, 2].
Therefore, in the process of myocardial ischemia reperfusion, increased production of free radicals should be halted.
It estimated that 37% of all cases of symptomatic heart failure worldwide were caused by myocardial ischemia [1].

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