Asynchronous Contraction Phase

The asynchronous contraction phase is a period during which one of the ventricles contracts while the other has not yet contracted. This occurs because the electrical impulse that causes the heart to contract passes through the atria, travels through the His bundle, and then reaches one of the ventricles, causing it to contract. However, if the atria contract faster than the ventricles, this may cause one of the ventricles to contract before the other.

The asynchronous contraction phase can be prolonged in pulmonary hypertension or systemic hypertension. Pulmonary hypertension occurs when the lungs cannot pump blood away from the heart effectively, resulting in increased pressure in the pulmonary artery. Systemic hypertension occurs due to increased pressure in the arteries, which can be caused by various diseases such as hypertension or atherosclerosis.

Especially often, the phase of asynchronous contraction is prolonged with bundle branch block, which can occur due to various heart diseases, such as myocardial infarction or cardiomyopathy. A bundle branch block prevents electrical impulses from passing through the bundle branches and reaching the ventricles.

Prolongation of the asynchronous contraction phase is a sign that the heart cannot pump blood effectively, which can lead to various complications such as heart failure or myocardial infarction. Therefore, it is important to promptly diagnose and treat heart diseases that can lead to phases of asynchronous contraction.

The asynchronous contraction phase is an important phase of the cardiac cycle, which can be diagnosed by performing an ECG (electrocardiography). In this phase, one of the ventricles contracts while the other has not yet begun contracting. This occurs when an electrical impulse from the atria travels through the His bundles and Purkinje fibers and reaches the ventricles, causing one of them to contract.

The asynchronous contraction phase can be prolonged in various heart diseases, such as pulmonary hypertension, systemic hypertension, or bundle branch block. These conditions can lead to disruption of the passage of electrical impulses from the atria to the ventricles. If the asynchronous contraction phase is prolonged, this can lead to an increase in the time of ventricular contraction and a deterioration in the pumping function of the heart.

To diagnose the phase of asynchronous contraction, it is necessary to conduct an ECG. A cardiologist may notice a prolongation of this phase on the ECG, which may indicate the presence of heart disease. Treatment depends on the specific disease that led to the prolongation of the asynchronous contraction phase. In some cases, medication or surgery may be required.

It is important to understand that the asynchronous contraction phase is only one of many phases of the cardiac cycle. It is not the only indicator of heart health and must be assessed in the context of the entire heart rhythm. If you notice any changes in your heart rhythm, be sure to see your doctor for diagnosis and treatment.