Apr 30, 2022 · It affects the heart's natural pacemaker (sinus node), which controls the heartbeat. Sick sinus syndrome causes slow heartbeats, pauses (long periods between heartbeats) or irregular …

Oct 8, 2024 · Commonly seen in the elderly but sinus node dysfunction can affect all age groups. Symptoms are due to decreased cardiac output and end-organ hypoperfusion associated with …

Jul 4, 2023 · Sinus node dysfunction, also known by its historical name sick sinus syndrome, is the inability of the SA node to produce an adequate heart rate that meets the physiologic needs of the …

Sinus Node Dysfunction - Learn about the causes, symptoms, diagnosis & treatment from the Merck Manuals - Medical Consumer Version.

Jul 27, 2023 · Sinus node dysfunction (SND), also historically referred to as sick sinus syndrome (SSS) is characterized by dysfunction of the sinoatrial (SA) node that is often secondary to senescence of …

Disturbed automaticity and blocked impulses lead to arrhythmias that characterize sinus node dysfunction. The conditions encircled by the term sinus node dysfunction are as follows: Sinus …

Jul 18, 2025 · Sick sinus syndrome is a group of disorders arising from inadequate function of the sinus node that leads to bradycardia & other arrhythmias.

Sick sinus syndrome (sinus node dysfunction) is a heart rhythm condition that happens because your sinoatrial node (SA node) isn’t working right. When this pacemaker-like node can’t keep a steady …

Sinus node dysfunction, previously known as sick sinus syndrome, is characterized by abnormal initiation and propagation of electrical impulses from the sinoatrial node (SAN).

Oct 1, 2025 · Sick sinus syndrome (SSS) is a group of heart rhythm problems that occur when the heart's natural pacemaker—the sinoatrial (SA) node, also known as the sinus node—doesn't function …