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NSG 4330 A00 Complex Nursing Care Week 1 Test With Correct Answers.

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NSG 4330 A00 Complex Nursing Care Week 1 Test With Correct Answers .............

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NSG 4330 A00 Complex Nursing Care Week 1
Test With Correct Answers


what level does the heartbeat start at? - ANSWER the cellular level




what generates action potentials? - ANSWER individual monocytes




how do action potentials propagate across heart? - ANSWER via conduction
pathways




what are the inherent pacemakers? - ANSWER sinoatrial node

atrioventricular node

purkinje fibers




what does the p wave represent? - ANSWER depolarization of the atria




what does the qrs complex indicate? - ANSWER depolarization of the
ventricles




what does the t wave represent? - ANSWER repolarization of the ventricles

, if the u wave is present what does it represent? - ANSWER repolarization of
the purkinje fibres or may be associated with hypokalemia




what does the pr, qrs, qt intervals reflect? - ANSWER the length of time it
takes for the impulse to travel from one area to the heart to another




what triggers mechanical activity? - ANSWER depolarization




what does the stroke volume usually refer to? - ANSWER left ventricle




what is stroke volume and what is the amount? - ANSWER amount of blood
ejected from left ventricle per beat 60-100 mls per beat




what is preload? - ANSWER how much the right ventricle is stretched




it's dependent on venous return




what is afterload? - ANSWER resistance left ventricle has to overcome to
push blood to systemic circulation

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