Browse our Health Library to learn about treatments, conditions, and how Cedars-Sinai can support your healthcare needs.
Sick sinus syndrome is a type of abnormal heartbeat, or arrhythmia. If you have sick sinus, you may have episodes when your heart beats very slowly, stops beating for a short while, or beats very rapidly.
Bradycardia is when the heart beats too slowly and can cause problems. Learn how it's diagnosed, and what treatments can help.
Sinus bradycardia is a type of slow heartbeat. A special group of cells begin the signal to start your heartbeat. These cells are in the sinoatrial (SA) node. Normally, the SA node fires at about 60 to 100 times per minute at rest. In ...
Supraventricular tachycardia (SVT) is a kind of abnormally fast heartbeat.
Tachycardia is when the heart beats too fast. Find out what symptoms it causes, how it’s diagnosed, and what treatments can help manage it.
Syncope is a brief loss of consciousness and muscle tone caused when not enough blood gets to the brain. Syncope is commonly called fainting. In most children, it’s usually harmless. But in a few children, syncope is serious. This is ...