The sinus node is a structure located in the upper part of the right side of the heart, which serves as the heart's pacemaker. Electrical impulses are produced there and travel from the sinus node down to the ventricles, that is the lower part of the heart.
What Is Sick Sinus Dysfunction?
Sick sinus dysfunction is the inability of the sinus node to perform its duty of sending the right amount of electrical impulses to the other parts of the heart. It is commonly presented in three forms:
- Tachy-Brady syndrome: A situation where there is an either too fast heartbeat or too slow heartbeat.
- SA (sinoatrial) nodal exit block: The duration of the impulse traveling is increased because of blockage. It could be partial or total, like in the case of AV (atrioventricular) block.
- Sinus arrest: Is when there is prolonged blockage, leading to the absence of an impulse.
This disease is more common amongst older adults.
What Are the Causes of Sick Sinus Dysfunction?
- Long years of poorly managed arterial hypertension.
- It could occur after undergoing heart surgery.
- Old age, because in elder people, there is degeneration of tissues of the heart.
- Diseases like amyloidosis and sarcoidosis.
- Prior history of a heart attack.
What Are the Presenting Signs and Symptoms?
- Shortness of breath.
- Fast or slow heart rate.
- Syncope or lightheadedness.
What Are the Tests Necessary to Diagnose This Disease?
- Electrocardiogram (EKG): This can show an abnormality of P wave, which indicates depolarization of the atrium.
Ways to Treat Sick Sinus Syndrome.
- It is advised that patients with this problem reduce the amount of physical activity.
- Normally patients without symptoms do not require treatment.
- A pacemaker might be needed in patients who have a chronic history.
For more information consult a cardiac arrhythmia specialist online --> https://www.icliniq.com/ask-a-doctor-online/cardiologist/cardiac-arrhythmia
Last reviewed at: 07.Sep.2018
Is heart attack genetic?
I am a 30 year old female. My father who is 65 years old has suffered from two very severe heart attacks, one recently and another two years back. His father and brother both died in their 50s from heart attacks. Is heart attack genetic? Should my son and I get tested? Read Full »
Dr. Sagar Ramesh Makode
Welcome to icliniq.com.
Yes, heart attack has a genetic component coupled with environmental elements like lifestyle, etc.
Your chance of acquiring it depends on both of your parents. Likewise, your son acquiring it depends on you and your husband.
But you are at an increased risk, so you...
Read Full »