There are four heart valves each of which can have essentially two problems. Heart valves Aortic valve Blood flows from LV into Aorta Pulmonary valve Blood flow from RV into pulmonary arteries Mitral valve Blood flows from left atrium into the LV Tricuspid … [Read more...]
S2 E024 Heart Block for the PANCE or PANRE
Atrioventricular Block (AV Block) AV block is when there is a problem conducting the signal from the SA node through the AV node to the ventricles. First Degree AV Block Signals from the SA node are delayed through the AV node PR interval is greater than .20 seconds (more than one … [Read more...]
S2 E023 Ventricular Rhythms
Ventricular Arrhythmias Wide QRS complex No preceding P wave Premature Ventricular Contractions (PVC) Extra beat originating in one of the ventricles No p wave Wide QRS Terminology Bigeminy – PVC is every other beat. One normal beat followed by a PVC repeated … [Read more...]
S2 E022 Afib & Aflutter
Atrial fibrillation Fibrillation Muscular twitching involving individual muscle fibers acting WITHOUT coordination The most common chronic arrhythmia Onset is PSVT before becoming chronic First event will spontaneously convert 60% of the time within the first 24 hrs Risk … [Read more...]
S2 E021 Introduction to Conduction Disorders
The conduction system of the heart Sinoatrial node SA node, sinus node The “pacemaker” Located in the right atrium Specialized cells that generate the electrical impulse which travels through the heart causing it to beat. The normal rate at which the SA node will fire is … [Read more...]
