There are three types of second degree heart block, also called atrioventricular (AV) block. In type I the signal sometimes does not reach the ventricles, causing skipped beats. It is often benign and ...

Complete heart block means that there’s a complete separation of electrical activity between the upper and lower chambers of the heart. Without prompt medical attention, it can be fatal. Your heart ...

Second-degree heart block is a type of heart rhythm disorder. There are two types of second degree heart block — Mobitz type 1 and Mobitz type 2. Mobitz type 2 heart block occurs when the electrical ...

Third-degree heart block usually involves treatment with a temporary or permanent pacemaker. In some situations, treatment may include medications or synthetic hormones. Third-degree heart block, also ...

Medically reviewed by Christopher Lee, MDMedically reviewed by Christopher Lee, MD Heart block is a delay or disruption within the heart's electrical conduction system that controls the rhythm and ...

The human heart beats approximately 100,000 times daily, pumping over 2,000 gallons of blood through a 60,000 mile network of vessels. This remarkable feat relies on a precise electrical system ...

When you have atrial fibrillation, the two upper chambers of your heart (atria) don't beat in sync with the two lower chambers (ventricles). This makes your heart beat out of rhythm and sometimes very ...

A 31-year-old woman with no significant medical history presents with intermittent heart palpitations, dizziness, shortness of breath, and fatigue provoked by exercise. Can you make the diagnosis? A ...

DEAR DR. ROACH: Is COVID-19 infection a cause of heart block? I recently had a complete heart block, tested positive in the ER for COVID-19 (symptomless and post-vaccine), and was fitted with a ...

You know the feeling. When you first see your crush and your head starts spinning, your palms get sweaty, and your heart begins beating a mile a minute. Is this love? Or is it … an arrhythmia? The ...