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1. The Basis of Electrocardiogram ( electrocardiogram) caput 1.1 : Based on the cardiogram tracing provided in page 3,calculate the following : a) PR detachment(4 x 0.04 = 0.16 seconds) b) QT interval(10 x 0.04 = 0.4 seconds) c) ST segment(3 x 0.04 = 0.12 seconds) d) QRS while(2 x 0.04 = 0.08 seconds) e) P wave amplitude(1 x 0.1 = 0.1 mV) f) T wave amplitude(2 x 0.1 = 0.2 mV) g) Estimation of nubble hurry per unit(300 ÷ 5 = 60 wavers) header 1.2 : Why does the SA customer draw out as the normal pacemaker? What is an ectopic focus? The SA guest normally functions as the pacemaker for the entire heart because its twist is the fastest in the system. From the SA node, impulses spread out over the atria, do them to contract. Ectopic focus is an bea in the heart that initiates impulsive swots.It is the excitable group of cells that causes a ill-timed heart beat outside the normally functioning SA node of human heart. Questi on 1.3 : What is a premature ventricular contraction (PVC) and how it is produced? It is a comparatively common event where the heartbeat is initiated by the heart ventricles  quite an a than the SA node.

It is produced when the ventricle is electrically discharged and contracted untimely before the normal electrical discharges arrive from the SA node. These premature discharges atomic number 18 imputable to electrical irritability of the heart muscle of the ventricles and brook be caused by heart attacks, electrolyte imbalances, lack of oxygen, or medications. right off afterwards a premature ventri cular contraction, the electrical of the hea! rt resets. This resetting causes a brief pause in heartbeat, and some patients sketch tonicity the heart briefly stopping after a premature ventricular contraction. 2. The Heart Sounds Question 2.1 : Why are the initiative and second heart sounds different in fervor or pitch? The first heart sound which flowerpot be described as a lubb has a comfortable feel and is lower pitch,duller and longer than second...If you want to get a mount essay, order it on our website: OrderCustomPaper.com

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