Which device is often required for managing sick sinus syndrome?

Sick sinus syndrome is a condition characterized by abnormal heart rhythms that originate from the sinus node, leading to issues such as bradycardia (slow heart rate) and episodes of tachycardia (rapid heart rate). In many cases, patients with sick sinus syndrome experience significant symptoms due to their irregular heart rates, which can lead to fatigue, dizziness, or even fainting.

The management of sick sinus syndrome often requires the implantation of a permanent pacemaker. A mechanical pacemaker is designed to provide electrical stimulation to the heart when the sinus node fails to generate appropriate impulses, thereby maintaining an adequate heart rate and improving symptoms. By ensuring that the heart beats at a suitable rate, the pacemaker alleviates the risks associated with severe bradycardia or other rhythm abnormalities linked to sick sinus syndrome.

The other devices mentioned do not address the core issue of sick sinus syndrome effectively. An implantable cardioverter-defibrillator is primarily used for patients at risk of life-threatening arrhythmias, such as ventricular tachycardia or fibrillation, rather than for bradyarrhythmias. An external defibrillator is a temporary measure for treating acute life-threatening arrhythmias and is not suitable for long-term management. A heart-lung