Cardiac arrest in arrhythmia

2021-05-31 04:15 PM

Hypoxemia causes the myocardium and conductive fibres to lose their normal membrane potential, and this excitability causes the automatic rhythm to disappear.

The most dangerous outcome of an irregular rhythm is cardiac arrest, which is the result of a cessation of electrical conduction throughout the heart, leaving the heart's automatic rhythm no longer.

Cardiac arrest occurs in a deep coma when there is severe hypoxemia due to ineffective respiration. Hypoxemia causes the myocardium and conductive fibres to lose their normal membrane potential, and this excitability causes the automatic rhythm to disappear.

Many cardiac arrests are caused by a deep coma, with CPR lasting from minutes to hours without restoring a normal rhythm. In some patients, many cardiomyopathies cause complete or incomplete cardiac arrest, which can lead to death. To treat this condition, pulsed electrical impulses from a pacemaker are often used with good results keeping the patient alive for months to years.