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An extrasystole is a type of irregular heartbeat pattern. It occurs when the lower chambers of the heart called the ventricles contract sooner than they are supposed to in a normal heart rhythm. The premature contraction is followed by a short pause and then a fast beat of the rest of the heart. Minor extrasystoles are fairly common and usually do not cause symptoms, though a very pronounced extrasystole can lead to palpitations, chest pains, trouble breathing, and other dangerous symptoms. Treatment typically consists of taking daily medications to regulate heart activity and control other underlying conditions
Wiki User
∙ 13y ago
Extrasystoles (also known as premature atrial or ventricular contractions) can be caused by a variety of factors including caffeine, stress, certain medications, electrolyte imbalances, and heart conditions such as cardiomyopathy or coronary artery disease. In some cases, they may occur without a known cause.
Wiki User
∙ 9y agoCauses of extrasystole include alcohol, ischemia, hypoxia, and myocarditis. Extrasystole is defined as a premature beat in the heart that causes momentary arrhythmia.
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What is a premature ventricular contraction is classified as a?
extrasystole.
Is it possible to induce extrasystole yes or no?
yes. during diastole (resting phase)
What is the cause of compensatory pause after an extrasystole?
Extrasystole is due to the irregular contraction of the ventricle before the atria. When this happens, an action potential is elicited and the ventricle contracts. The action potential had a refractory period, during which the intrinsic heart rate attempts to fire but cannot elicit a contraction. This is why extrasystole is often referred to as skipping a beat. The compensatory pause is the time it takes for the beat to resume normal contraction.
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The cast of Extrasystole - 2013 includes: Claire Barrault as Fleur Adrien de Van as Cyril Lucas Fevret as Guillaume Francis Moulonguet as Le professeur Pablo Zucker as Simon
During which portion of the cardiac cycle is it possible to induce extra systole?
Extrasystole is an extra ventricular systole that happens during the begging of relaxation (repolarization). Since the cardiac is able to depolarize only after repolarization, any stimulus upon the repolarization period created an increased ventricular contraction or which is also called extrasystole but not a new contraction.
Why is it only possible to induce an extrasystole during relaxation?
The cardiac muscle is incapable of reacting to any stimulus before approximately in the middle of phase 3. It will not react to a normal cardiac stimulus before phase 4.
Why is it only possible to induce an extrasystole during relaxation period?
The cardiac muscle is incapable of reacting to any stimulus before approximately in the middle of phase 3. It will not react to a normal cardiac stimulus before phase 4.
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