A ventricular assist device (VAD) is a mechanical pump used to support heart function in patients with severe heart failure. It helps the heart pump blood to the rest of the body, improving circulation and reducing symptoms like fatigue and shortness of breath. VADs can be used as a temporary solution while waiting for a heart transplant or as a long-term treatment option. These devices are typically implanted in the chest and connected to the heart's ventricles. They can be powered by batteries, allowing patients to maintain a more active lifestyle. VADs are an important advancement in cardiac care, offering hope to those with limited treatment options.