electrical instability

electrical instability

[i′lek·trə·kəl ‚in·stə′bil·əd·ē]
(electricity)
A persistent condition of unwanted self-oscillation in an amplifier or other electric circuit.
References in periodicals archive ?
When a trigger can be identified, its correction may reverse the electrical instability of the myocardium.
Recent evidences suggest that asymmetric brain activity during acute emotional stress causes asymmetric activation of heart leading to production of inhomogeneous areas of repolarization and production of electrical instability of heart.
As a result, there is an abnormal increase in the firing rate at sympathetic nerve endings thus leading to electrical instability by decreasing heart rate variability consequently generating potentially lethal ventricular tachyarrhythmias.
However, when this effect is confined to a limited area of the heart, segmental delays in myocardial repolarization may produce global cardiac electrical instability.
But too much CaM kinase, and consequently too much calcium entry into heart cells, causes electrical instability and other downstream molecular problems that can lead to cell overload and cell death, which causes heart failure.
According to one of the current concepts, a large amount of necessary information, required for identification of patients with high level of myocardial electrical instability, i.
Some of that evidence spoke to the efficacy of a conservative, noninvasive management strategy and a recognition that one approach does not fit all when treating patients with unstable angina or non STEMI who do not have hemodynamic or electrical instability or persistent angina.
It is the result of poor contraction of the heart or electrical instability of the heart due to the inflammation of the heart muscle.
I think it is consistent with an electrical instability of the heart which could cause sudden instantaneous death with no warning.
The twitching is normally caused by temporary electrical instability in the nerve or muscle and is not a sign of an underlying health problem.
Full browser ?