Paper

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 centre heyday per unit(300 ÷ 5 = 60 wavers) interrogative sentence 1.2 : Why does the SA customer visitation as the normal pacemaker? What is an ectopic focus? The SA lymph gland normally functions as the pacemaker for the entire heart because its swear 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 winks.It is the excitable group of cells that causes a ill-timed heart beat outside the normally functioning SA node of human heart. Question 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  instead 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 are imputable to electrical irritability of the heart muscle of the ventricles and dismiss be caused by heart attacks, electrolyte imbalances, lack of oxygen, or medications. without delay afterwards a premature ventricular contraction, the elect! rical of the heart resets. This resetting causes a brief pause in heartbeat, and some patients storey 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 posture or pitch? The first heart sound which endure be described as a lubb has a din 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

If you want to get a full essay, visit our page: write my paper