CCRN test bank 1 Latest Update Actual Exam
125 Questions and 100% Verified Correct
Answers Questions & Answers, 100% Verified
Graded A+
A patient received one unit of packed cells. Which of the following would be the expected effects of the
transfusion?
A.
Increase in hemoglobin by 0.5 g/dl and increase in hematocrit by 2%
B.
Increase in hemoglobin by 0.5 g/dl and increase in platelets by 50,000/mm3
C.
Increase in hemoglobin by 1 g/dl and increase in hematocrit by 3%
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D.
Increase in hemoglobin by 1 g/dl and increase in platelets by 50,000/mm3 –
Correct Answer :C. Increase in hemoglobin by 1 g/dl and increase in hematocrit by 3%
One unit of packed red blood cells should increase the hemoglobin by 1 g/dl and hematocrit by 3% within
approximately 4 to 6 hours. Red blood cells do not provide platelets.
A 20-mm S wave in lead V1 and a 25-mm R wave in lead V6 are noted on a patient's 12-lead electrocardiogram.
This would indicate which of the following?
A.
Right bundle branch block (RBBB)
B.
Left ventricular hypertrophy
C.
Posterior wall myocardial infarction (MI)
D.
Right ventricular hypertrophy –
Correct Answer :B. Left ventricular hypertrophy
When the depth of the S wave in lead V1 or V2 plus the height of the R wave in lead V5 or V6 is 35 mm or greater,
this constitutes voltage criteria for left ventricular hypertrophy.
Which of the following would be the earliest auscultatory finding in left ventricular failure (LVF)?
A. Crackles
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B. S3
C. Murmur of mitral regurgitation
D. Pericardial friction rub - Correct Answer :B. S3
LVF would be the most subtle because early changes are usually subtle changes. Choose "S3."
A patient with a triple-lumen subclavian catheter has been receiving total parenteral nutrition, maintenance
fluids, and antibiotics by the catheter. He has been slightly confused. Suddenly he grasps the catheter and pulls it
out. He then complains of shortness of breath, and his pulse oximetry indicates an SpO2 of 84%. How should this
patient be positioned?
A. Head down, left side
B. Head down, right side
C. Head of bed elevated, left side
D. Head of bed elevated, right side - Correct Answer :A. Head down, left side
Envision a big air bubble in the patient's heart. Think: what position would decrease the movement of the air
embolism out of the right side of the heart. Chose "Head down, left side."
Oxygen delivery (DO2) is the product of which of the following?
A.
PaO2, hemoglobin, mean arterial pressure
B.
SaO2, hemoglobin, cardiac output
C.
SvO2, cardiac index, SaO2
D.
PaO2, mean arterial pressure, SvO2 - Correct Answer :B. SaO2, hemoglobin, cardiac output
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Oxygen is delivered from the arterial end, so choose an option that has SaO2
Which of the following is the most significant complication of status asthmaticus?
A.
Pulmonary embolism
B.
Acute respiratory failure
C.
Hypertension
D.
Anaphylaxis - Correct Answer :B. Acute respiratory failure
A 22-year-old man is admitted to the critical care unit after a motor vehicle collision. The emergency department
nurse reports that he was unconscious at the scene of the accident, but he is now alert and oriented. Skull films
show a linear fracture of the right temporal bone. He is at significant risk for:
A.
scalp hematoma.
B.
subdural hematoma.
C.
epidural hematoma.
D.
intracerebral hematoma. - Correct Answer :C. epidural hematoma.
Linear fractures of the temporal bone frequently disrupt the middle meningeal artery and cause epidural
hematoma. Patients with an epidural hematoma classically present with a short period of unconsciousness
followed by a lucid interval and then rapid deterioration. An epidural hematoma is usually caused by arterial
bleeding.
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