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Atria contracts when? - After the Mitral valve and Tricuspid valve opens causing ventricles to fill with blood. Mitral Valve (also known as Bicuspid valve) - Atrioventricular valve that separates the left atrium and left ventricle. Prevents back flow of blood to left atrium Valves prevent what? - The back flow of blood How to heart valves function? - As the heart muscle contracts and relaxes, the valves open and shut letting blood flow into the ventricles and atria at alternate times. Ste...

LCA (Left Coronary Artery) - Divides to LAD and Circumflex Circumflex Artery - Supplies blood to L Artery, side and back of L Ventricle LAD (Left Ant Descending) - "Widower"; Supplies blood to front and bottom of L Ventricle and front of septum Ischemia - 1st phase of M.I.: Lack of Oxyfen, ST depression Injury - 2nd phase of M.I.: Result of Ischemia; tall peaked Twaves and ST segment elevation Infarction - 3rd phase of M.I.: Necrosis of heart tissue; broad and deep Q wave Atheroscl...

HR Range: Idioventricular, Acc Idioventricular, and Vtach - 20-40, 41-100, 101+ HR Range: Juncitonal, Acc Junctional, and Junctional Tach - 40-60, 61-100, 101+ Intrinsic rate of SA node - 60-100 bpm Intrinsic rate of AV node - 40-60 bpm Intrinsic rate of Purkinje fibers (ventricles) - 20-40 bpm 2 types of v-tach - monomorphic (all the same) and polymorphic (looks like a spindle) Torsades de Pointes is a type of ______ ______ - poltmorphic v-tach Rhythm that has no pattern at all. Wavefo...

100. You just performed a "STAT" ECG on Mrs. Stephenson. What should you do with the results? A. Give it directly to your supervisor or other licensed practitioner or place it on the chart and inform them that it has been completed. B. Place it directly on the chart and take a second copy back to the ECG lab. C. Place it in a box at the nursing station and inform your supervisor that it has been completed. D. Place it in the consulting physician's box and inform him or her htat i...

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