Heart failure. Cutaway illustration of a human heart and an ECG (electrocardiogram) trace in left ventricular heart failure. The trace shows cardiac arrhythmia (irregular heartbeat),a major cause of heart failure. Heart failure occurs when the heart fails to empty itself completely with each contraction. In left ventricular failure the left ventricle (right) is responsible. As a result its muscular wall becomes abnormally enlarged and a backflow of pressure occurs against the pulmonary vein,causing the lungs to become congested with blood. Symptoms include pulmonary oedema,shortness of breath and fatigue. Short-term treatment includes bed-rest and diuretic drugs | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Bavosi, John |
Taille de l’image : | 2794 px × 3524 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |