Nr 224 Exam 2 Frequently Tested Actual Questions With Correct Answers

NR 224 Exam 2 FREQUENTLY TESTED ACTUAL
QUESTIONS WITH CORRECT ANSWERS

Question 1.
ventilation

ANSWER
movement of air into and out of lungs, regulation in aveoli



Question 2.
perfusion

ANSWER
ability of cardiovascular system to pump oxygenated blood to tissues and return
deoxygenated blood to lungs



Question 3.
pulmonary system

ANSWER
lungs, airways, chest walls, blood vessels




Question 4.
hypoxia

ANSWER
low oxygen in tissues






,Question 5.
hypoxemia

ANSWER
low oxygen in blood



Question 6.
hypoventilation

ANSWER
ventilation inadequate to meet oxygen needs or eliminate enough CO2, caused by collapsed
alveoli



Question 7.
hyperventilation

ANSWER
increased respiratory rate which causes excess CO2 elimination, anxiety/infection/drugs/acid-
base imbalance induce hyperventilation



Question 8.
conduction system

ANSWER
sinoatrial node, atrioventricular node, bundle of His, Purkinje fibers






, Question 9.
electrocardiogram (ECG)

ANSWER
ECG waveform (P wave, QRS complex, T wave)




Question 10.
alterations of circulatory system

ANSWER
decreased cardiac output (heart failure), myocardial ischemia (myocardial infarction), impaired
valvular function (obstructed blood flow, regurgitation), left-sided heart failure (decreased
cardiac output, pulmonary congestion), right-sided heart failure (distended jugular veins,
peripheral edema), hypovolemia (decreased circulating blood flow)



Question 11.
sinus tachycardia

ANSWER
regular rhythm, fast rate of 100-180 bpm