Right-Sided Heart Failure
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MEDICAL ANIMATION TRANSCRIPT: In right-sided heart failure, the right ventricle cannot contract with enough force to push deoxygenated blood, a volume called preload, out of the heart, through the pulmonary arteries, and into the lungs for oxygenation. The most common cause of right-sided heart failure is left-sided heart failure, often the result of coronary artery disease. Increased after-load or resistance in pulmonary arteries elevates pumping pressure and weakens the right ventricle over time. Right-sided heart failure caused by pulmonary disorders is called cor pulmonale. Pulmonary conditions that contribute to right-sided heart failure are chronic obstructive pulmonary disease or COPD, cystic fibrosis, and acute respiratory distress syndrome or ARDS. As the overworked right ventricle labors to get the blood into the normally low-pressure pulmonary arterial system, its walls hypertrophy and pump ineffectively. Ineffective pumping causes blood to remain in the right ventricle and
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