Discussion 3 Coursework Example | Topics and Well Written Essays - 500 words

Discussion 3 - Coursework Example The chest leads measurements should also be taken. The six chest leads are; V1-V6. The records in this stage are vital since they show the time of electric travel from one node to another. The records give the average time taken by the ventricles to recover or refill with blood. Lead I voltage is then measured with reference to the electrodes between the right arm and the left leg. The records give the longest time of electric travel between the furthest limbs (Christoffels, 2009). The records should be taken for each limb with the relative nodes identified in different parts of the body. The readings taken should show the time of electric travel and the ventricle recovery. ST segment elevation in lead II, III and AVR creates some movements in the left auricle of the heart. It causes the contraction and relaxation of the left auricle muscles as a result of an electric impulse (Surawicz, 2009). The relaxation and contraction forces blood through the valve thereby causing it to close and open. The contraction and relaxation affects the right atrioventricular valve. ST segment elevated in VI-V2 affect the left ventricle. It results in a systematic contraction and relaxation of the left ventricle. It combines a series of action relating to the contraction and relaxation of the lower part of the heart muscles. It affects the left coronary artery causing it to open and close at regular intervals. It results in the entry and expulsion of blood from the chamber that also sets the heartbeat pace (Katz, 2010). It also triggers a strong force that forces the blood out of the heart through the aorta. ST segment elevated in V3-V4 affects the right ventricle’s muscles. The opening and closing of the valve is triggered by an electric impulse that originates from the left ventricle muscles. The segment produces an electrical conduction system that controls the Purkinje fibers. The effects are caused by an impulse resulting from