Cardiac Resynchronization Therapy (CRT) is a treatment designed to improve the heart's efficiency and coordination in patients with heart failure and specific types of heart rhythm disturbances, particularly those with left bundle branch block. CRT involves implanting a specialized pacemaker, known as a biventricular pacemaker, which delivers electrical impulses to both the left and right ventricles of the heart. This synchronization helps to improve the heart's ability to pump blood effectively by ensuring that the ventricles contract simultaneously, enhancing overall cardiac function. The primary cause for using CRT is to address the issue of electrical disynchrony in the heart, which can lead to inefficient pumping and worsening heart failure symptoms. By restoring proper coordination between the ventricles, CRT aims to alleviate symptoms such as shortness of breath, fatigue, and swelling, and improve overall quality of life. However, CRT is associated with potential complications. Common side effects include infection at the implantation site, lead dislodgement, or device malfunction. Some patients may also experience adverse reactions to the electrical impulses, such as worsening arrhythmias or discomfort. Additionally, as with any procedure involving implantable devices, there is a risk of complications related to the surgical procedure itself, including bleeding, pneumothorax, or damage to nearby structures. Despite these risks, CRT is a valuable treatment for eligible patients with advanced heart failure, offering significant benefits in terms of symptom relief and improved cardiac function, and can be a critical component of a comprehensive heart failure management plan.
