Electrocardiopraphy Basics Cardiac Conduction System What is the PQRST ecg ekg

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#StemEducation What is the cardiac conduction system? • The human heart is an engine that has to work 24/7 to keep you alive, and it has to be reliable and effective. To do this, it relies on a specialized network of cells called the cardiac conduction system. It’s also known as your heart’s electrical system. • Cells in the cardiac conduction system can generate electrical impulses and then distribute the signal throughout your heart. While all cells in your heart can conduct electricity, the cells in this system conduct it at very specific speeds. This is how different parts of your heart beat at just the right time. The parts of the cardiac conduction system are (in order, starting where electricity is generated): • The sinoatrial (SA) node. • The atrioventricular (AV) node. • The Bundle of His. • Bundle branches. • See Rhythm Interpretation Notes • Basic Rhythm Refresher https://drive.google.com/file/d/1HFdZ... • EKG Lecture Notes https://docs.google.com/document/d/1Y... • Blood Flow Lecture Notes • https://docs.google.com/presentation/... • • Purkinje fibers. • Function • What does the cardiac conduction system do? • Your body uses electrical impulses to control when your muscles flex and relax, and your heart is no different. However, your heart needs to do this 24/7, whether you’re asleep or awake. To do this, it relies on a specific part of your nervous system called the autonomic nervous system. This is the unconscious part of your nervous system, and it runs the functions of your body that you don’t think about. This includes your heart, breathing, digestion and more. • The timing of your heart muscle’s action is also critical. Rather than your brain firing the electrical impulses, it relies on your heart’s conduction system. To do that, your brain sends signals through your autonomic nervous system to your heart’s electrical system. That system activates, sending an electrical pulse through your heart muscle. This makes the chambers of your heart squeeze in a specific order, creating a heartbeat. • Under normal circumstances, this happens between 50 to 100 times per minute when you're at rest. When you're active, your heart speeds up and beats faster. • Heart muscle and its function • Your body has three types of muscle: smooth, skeletal and cardiac. • https://my.clevelandclinic.org/health...

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