Health A-Z

Venous thromboembolism

Clinical Definition A venous thromboembolism is a medical condition, which includes a pulmonary embolism and a deep vein thrombosis. It occurs when a thrombus develops in a vein in the body and obstructs blood flow. Thrombus formation can occur due to several factors, such as venous stasis, inactivity and damage to the vessel walls. In

Ventricular Fibrillation

Clinical Definition Ventricular fibrillation is a life-threatening cardiac arrhythmia, marked by rapid, unsynchronized depolarization of the ventricles. Contractions are uncoordinated and ineffective at maintaining proper circulation and blood pressure. Ventricular fibrillation leads to cardiac arrest if not treated immediately. In Our Own Words Ventricular fibrillation is an abnormal heart rhythm, which can be fatal if not reversed

Ventricular Septal Defect (VSD)Hole in the heart

Clinical Definition Ventricular septal defect is a congenital cardiac condition in which the septum separating the ventricles has an abnormal opening, allowing blood to flow directly between the ventricles. Oxygenated blood is shunted back into the pulmonary circulation, which can lead to pulmonary congestion. Clinical presentation and treatment depend on the size of the opening.

Ventricular Tachycardia

Clinical Definition Ventricular tachycardia is a cardiac arrhythmia, originating in the right or left ventricle of the myocardium. Due to the rapid rhythm the myocardium is not able to fill with blood prior to contraction. This prevents blood from circulating through the body efficiently. Ventricular tachycardia may develop due to cardiomyopathy, coronary artery disease or

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