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NR507 MIDTERM EXAM QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS VERIFIED
Practice questions for this set
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the volume of blood pumped out by each ventricle per minute
Select the correct term
1What is cardiac output?
2What is systole?
What would an NP order to know the Will sustained tachycardia result in
3body's total iron stores? 4increased or decreased stroke volume?
Don't know?
Terms in this set (98)
Deoxygenated venous blood → Sup. Vena Cava → Right Atrium →Tricuspid (AV)
→Empties into R. Ventricle (& it contracts) → Blood ejected through Pulmonary Valve
How does blood flow through the heart? → Pulmonary Artery → Lungs to be Oxygenated → Pulmonary Veins → L.
Atrium → Mitral (AV) → L. Ventricle (pumps with each contraction) →
Aortic Valve → Aorta → Body
What is systole? Contraction of the heart which pumps blood
Diastole Relaxation of the heart
What produces S1 and S2 sound? closing of the heart valves
What produces S1? The mitral and tricuspid valves which close in systole
What produces S2 sound? The closing of the aortic and pulmonic valves in diastole
What is cardiac output? the volume of blood pumped out by each ventricle per minute
What is stroke volume? amount of blood pumped out by each ventricle with contraction
What determines cardiac output? stroke volume and heart rate
the degree of stretch on the heart before it contracts, related to
What is preload?
ventricular filling, end diastolic pressure, amount of blood entering the
ventricle during diastole
What is afterload? resistance left ventricle must overcome to circulate blood
Normal ability of muscle to contract at a given force for a given stretch. It is
What is contractility?
independent of preload/afterload
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, 3/24/25, 6:00 NR507 Midterm Flashcards |
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Will sustained tachycardia result Decreased
in increased or decreased stroke
volume?
What conditions can result in Ischemia, acidosis, cardiomyopathy
decreased contractility?
What can cause increase afterload? HTN, pulmonary disease, damage to the aortic valve
What has the most immediate effect on HTN
afterload?
Why would hemorrhaging Decreased volume of blood creates less resistance
cause decreased afterload?
What does increased preload do to Increases stroke volume, over time the body will be unable to compensate however
stroke volume?
What can cause a decreased preload? Hemorrhage, dehydration...anything that causes reduced blood volume
What side of the heart is affected by Right (AKA Right sided HF)
cor- pulmonale?
is defined as right ventricular hypertrophy with eventual RV failure
What is cor-pulmonale? resulting from pulmonary HTN, secondary to pulmonary disease. Causes
dilation (stretching) of the right ventricle causes a back up of blood flow,
and hypertrophy of cardiac cells
What conditions could cause cor COPD, PE, Pulmonary fibrosis, sleep apnea, myasthenia gravis, polio
pulmonale?
What are causes of heart failure? CAD, HTN, Cardiomyopathy, faulty heart valves
Explain how systemic HTN can HTN causes increased LV preload which increases LA preload causing
lead to heart failure? pulmonary edema
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