Adult 3 NUR 325 Exam 2 Cardiac Questions and Correct Answers
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Course
NUR 325
Institution
NUR 325
What is stenosis?
Answer- hardening or narrowing of a valve, it makes it difficult for blood to
flow past it, but bloods still flows normally through the heart
What is regurgitation?
Answer- blood moves backwards through the valve. The blood moves both
ways, in and out
What happens with Aor...
Adult 3 NUR 325 Exam 2 Cardiac Questions and Correct Answers What is stenosis? Answer - hardening or narrowing of a valve, it makes it difficult for blood to flow past it, but bloods still flows normally through the heart What is regurgitation? Answer - blood moves backwards through the valve. The blood moves both ways, in and out What happens with Aortic Stentosis? Answer - If there's sever aortic stenosis you will not get as much blood flow through the body. The body will start shunting from less vital organs t o more vital. The SNS will kick in causing an increased HR, vasoconstriction, and the kidneys won't get as well perfused so the RAS system will also kick in. People with AS could get really bad hypertension. We want to be careful not to drop these patient' s bps too much. What is a heart murmur? Answer - Abnormal heart sound due to a pathological valve, blood goes over patho part of valve When do you hear a heart murmur? Answer - When blood is moving over the pathological valve. (If it's a systolic murmur it's during the systolic phase of the pathological valve. If it is diastolic, it's during the valve's diastole) diastolic: heart filling with blood systolic: heart is emptying · 2 phases of diastole: passive and active; filling phase of ventricle (hea rt is filling with blood) · Passive: continuously getting blood flow in either atrium · Passive filling in left ventricle so much weight on valve so blood passive falls down to ventricle · Active: atrial contract and squeeze and shoots rest of blood down t here · Systole: 3 phases: isovolumetric contraction; systolic ejection; isovolumetric relaxation (heart is emptying) · Iso contract: ventricles are getting ready to eject blood; starting to sqeeze; cross fit bar bell on floor pick up and drop it - contracti on · Systolic ejection ventricle is contracting (pushing blood out) · Iso relax: squeeze and eject blood so start to relax and blood goes off to rest of body When do Ventricles contract? Answer - RV relaxes during diastole. LV fills and relaxes during diastole. LV contracts during systole, RV contracts during systole. what is the role of the atria Answer - The atriums fill continuously and passively open when there is too much pressure. The atri a of the heart receive blood returning to the heart from other areas of the body. Right Atrium: Receives blood returning to the heart from the superior and inferior venae cavae. The superior vena cava returns de -oxygenated blood from the head, neck, arm an d chest regions of the body to the right atrium. The inferior vena cava returns de -oxygenated blood from the lower body regions (legs, back, abdomen and pelvis) to the right atrium. Left Atrium: Receives blood returning to the heart from the pulmonary vein s. The pulmonary veins extend from the left atrium to the lungs and bring oxygen -
rich blood back to the heart. What's the most important cardiac parameter? Answer - Pulse What 3 main things generate a pulse and bP? Answer - contractility, preload (vo lume, blood), afterload (vascular tone,blood vessels) What is stroke volume?
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