3 What happens when the heart's electrical system switches off?

When a cardiac event strikes, treating a mechanical blockage with the wrong first-aid response can be a fatal mistake. The tension lies in the fact that our bodies rely on both fluid blood flow and electrical voltage, each failing in entirely distinct ways.

In this episode, we break down the clinical differences between coronary artery blockages and electrical conduction failures. We trace the path of a cardiac catheter from the radial or femoral artery to the heart, discuss how plaque deposits form from calcium and bad fats, and explain how medical devices like stents and pacemakers help restore normal function.

• The heart's rhythm is managed by electrical signals flowing from the SA node through the AV node and Purkinje fibers.
• Atherosclerosis develops when saturated fats, trans fats, and calcium accumulate inside the arterial walls to form plaques.
• Angiography utilizes radiocontrast dyes visible under X-ray to map out precise blockages before angioplasty or stenting is performed.
• Stents are wire-mesh tubes made of stainless steel, cobalt-chromium, or bioabsorbable materials that keep arteries physically open.
• Modern diagnostic tools like echocardiograms and treadmill tests help identify silent arterial narrowing before physical symptoms manifest.

Every year on September 29th, World Heart Day serves as a reminder to prioritize cardiovascular awareness under the current theme "Don't Miss a Beat."

Are you aware of your own numbers, such as keeping your LDL cholesterol below 130 and your HDL above 60?