An inverted T wave on your ECG may signal heart problems, but it’s not always dangerous and can appear in healthy people too. Your doctor needs to review your complete…

Bundle branch block occurs when electrical signals in your heart get delayed or blocked as they travel through the left or right bundle branches of your heart’s conduction system. EKG…

ST segment elevation on an ECG is a warning sign that shows your heart muscle isn’t getting enough blood, often during a heart attack. When you see ST segment elevation,…

A heart block is an electrical problem where signals from your heart’s upper chambers (atria) don’t properly reach the lower chambers (ventricles). This disrupts your heart’s normal rhythm and can…

PAC stands for premature atrial contraction, while PVC means premature ventricular contraction – both are extra heartbeats that occur earlier than normal but originate from different heart chambers. PACs come…

A PVC is a premature ventricular contraction – an extra heartbeat that starts in your heart’s lower chambers and happens earlier than your normal heartbeat. Most PVCs are harmless and…

Normal sinus rhythm means your heart beats in a regular, healthy pattern controlled by the sinoatrial (SA) node, typically between 60-100 beats per minute. On an ECG, normal sinus rhythm…

Tachycardia is a condition where your heart beats faster than 100 beats per minute while at rest. This rapid heart rate can cause symptoms like chest pain, dizziness, shortness of…

Bradycardia is when your heart beats slower than 60 beats per minute at rest. This condition can be normal for athletes or cause symptoms like dizziness and fatigue in others….

Atrial fibrillation (AFib) is an irregular heart rhythm where your heart’s upper chambers beat chaotically instead of in sync with the lower chambers. This common heart condition affects over 6…