Tag: ventricles
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Preload vs Afterload in cardiac function
Preload and afterload are two important factors that affect the function of the heart. Both play crucial roles in determining the function of the heart and the overall efficiency of the circulatory system. Abnormalities in either preload or afterload can have significant implications for cardiac function and overall cardiovascular health. Preload Preload is the amount…
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Ventricular Tachycardia (VT)
Ventricular tachycardia (VT) is a type of irregular heartbeat that originates from the lower chambers of the heart (the ventricles). It is characterised by a rapid heart rate, typically greater than 100 beats per minute, and can be a potentially life-threatening condition. VT can occur in people of all ages, but it is more common…
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Cardiac Cycle
The cardiac cycle is the sequence of events that occur in the heart during one complete heartbeat, starting with the contraction (systole) of the ventricles, followed by the relaxation (diastole) of the ventricles. The cycle includes the filling of the ventricles with blood during diastole and the ejection of blood into the circulatory system during…
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Ventricular Fibrillation (VF)
Ventricular fibrillation (VF) is a type of cardiac arrhythmia in which the ventricles of the heart contract in a rapid and disorganised manner, resulting in an ineffective pumping of blood. VF is a potentially life-threatening condition that requires immediate medical attention. VF is often the result of an underlying heart condition, such as coronary artery…
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Electrocardiogram (ECG)
A typical heart beat on an electrocardiogram (ECG) consists of several components, including the P wave, the QRS complex, and the T wave. The P wave represents the electrical activity of the atria, the upper chambers of the heart, as they contract and pump blood into the ventricles, the lower chambers of the heart. The…