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2. Heart block - Wikipedia

   en.wikipedia.org/wiki/Heart_block

   Heart block. Heart block (HB) [1] is a disorder in the heart 's rhythm due to a fault in the natural pacemaker. [2] This is caused by an obstruction – a block – in the electrical conduction system of the heart. Sometimes a disorder can be inherited. Despite the severe-sounding name, heart block may cause no symptoms at all in some cases, or ...

3. Second-degree atrioventricular block - Wikipedia

   en.wikipedia.org/wiki/Second-degree_atrio...

   Second-degree atrioventricular block (AV block) is a disease of the electrical conduction system of the heart. It is a conduction block between the atria and ventricles. The presence of second-degree AV block is diagnosed when one or more (but not all) of the atrial impulses fail to conduct to the ventricles due to impaired conduction.

4. First-degree atrioventricular block - Wikipedia

   en.wikipedia.org/wiki/First-degree_atrio...

   First-degree atrioventricular block (AV block) is a disease of the electrical conduction system of the heart in which electrical impulses conduct from the cardiac atria to the ventricles through the atrioventricular node (AV node) more slowly than normal. First degree AV block does not generally cause any symptoms, but may progress to more ...

5. Atrioventricular block - Wikipedia

   en.wikipedia.org/wiki/Atrioventricular_block

   Specialty. Cardiology. Atrioventricular block (AV block) is a type of heart block that occurs when the electrical signal traveling from the atria, or the upper chambers of the heart, to ventricles, or the lower chambers of the heart, is impaired. Normally, the sinoatrial node (SA node) produces an electrical signal to control the heart rate.

6. 'I Almost Died of a Severe Artery Blockage—This Is the Sign ...

   www.aol.com/lifestyle/almost-died-severe-artery...

   The Severe Artery Block Sign That Saved One Man's Life. Mark Vallery, 69, of Orlando, Florida, says he didn't experience symptoms of artery blockage until February of 2024. It was only then that ...

7. Coronary artery disease - Wikipedia

   en.wikipedia.org/wiki/Coronary_artery_disease

   Coronary artery disease (CAD), also called coronary heart disease (CHD), ischemic heart disease (IHD), [13] myocardial ischemia, [14] or simply heart disease, involves the reduction of blood flow to the cardiac muscle due to build-up of atherosclerotic plaque in the arteries of the heart. [5][6][15] It is the most common of the cardiovascular ...