CRNI EXAM QUESTIONS WITH 100% CORRECT ANSWERS |
2026/2027 UPDATE | GRADED A+
A femoral line can remain in place no longer than ______ hours. - ANSWER 4
The goal of PICC placement is to end in the ________ juncture. - ANSWER Cavalatrial
Proper PICC placement can be confirmed by EKG by _________? - ANSWER Peak in P wave
3 layers of the vein anatomy - ANSWER Tunica intima, tunica media, tunica adventitia
tunica intima - ANSWER the innermost layer of a blood vessel, composed of a single layer of cells; the
only tissue in the body that platelets do not stick to.
tunica media - ANSWER The middle and thickest layer of tissue of a blood vessel wall, composed of
muscle cells that allow the vessel to expand or contract in response to changes in blood pressure and
tissue demand.
tunica adventitia - ANSWER The outer layer of tissue of a blood vessel wall, composed of elastic and
fibrous connective tissue. Important not to drag needle against this layer, otherwise vein will
constrict
Allen's test - ANSWER Is the process of occluding the radial artery and ulnar artery at the same time,
maintaining pressure until the pt's hand turns white, then releasing the ulnar artery and observing
for blood return to the hand to assure adequate circulation via ulnar artery to allow placement of a
catheter into the radial artery.
What can cause dampened wave forms from an arterial line? - ANSWER Catheter tip against artery
wall or catheter is kinked
Ischemia or necrosis of the area can be a complication of an arterial line caused by _____? - ANSWER
Embolisms (air, thrombus, catheter, particulate matter)
Rotate arterial site every _____ hrs. - ANSWER 96 hrs
2026/2027 UPDATE | GRADED A+
A femoral line can remain in place no longer than ______ hours. - ANSWER 4
The goal of PICC placement is to end in the ________ juncture. - ANSWER Cavalatrial
Proper PICC placement can be confirmed by EKG by _________? - ANSWER Peak in P wave
3 layers of the vein anatomy - ANSWER Tunica intima, tunica media, tunica adventitia
tunica intima - ANSWER the innermost layer of a blood vessel, composed of a single layer of cells; the
only tissue in the body that platelets do not stick to.
tunica media - ANSWER The middle and thickest layer of tissue of a blood vessel wall, composed of
muscle cells that allow the vessel to expand or contract in response to changes in blood pressure and
tissue demand.
tunica adventitia - ANSWER The outer layer of tissue of a blood vessel wall, composed of elastic and
fibrous connective tissue. Important not to drag needle against this layer, otherwise vein will
constrict
Allen's test - ANSWER Is the process of occluding the radial artery and ulnar artery at the same time,
maintaining pressure until the pt's hand turns white, then releasing the ulnar artery and observing
for blood return to the hand to assure adequate circulation via ulnar artery to allow placement of a
catheter into the radial artery.
What can cause dampened wave forms from an arterial line? - ANSWER Catheter tip against artery
wall or catheter is kinked
Ischemia or necrosis of the area can be a complication of an arterial line caused by _____? - ANSWER
Embolisms (air, thrombus, catheter, particulate matter)
Rotate arterial site every _____ hrs. - ANSWER 96 hrs
