Answer to Question 1
ANS: C
All persons have biological clocks that synchronize their sleep-wake cycle. This explains why some individuals fall asleep in the early evening and some late evening or early morning. This patient is awake and alert enough to do a puzzle. The individual's sleep-wake preference is probably late evening. Waiting to talk with the nurse, being lonely, and noise on the unit may contribute to lack of sleep, but the best explanation for the patient being awake is the biological clock.
Answer to Question 2
ANS: B, D, F
The nurse should stop the infusion before removing the IV catheter, so the fluid does not drip on the patient's skin; keep the catheter parallel to the skin while removing it to reduce trauma to the vein; and apply pressure to the site for 2 to 3 minutes after removal to decrease bleeding from the site. Scissors should not be used because they may accidentally cut the catheter or tubing or may injure the patient. During removal of the IV catheter, light pressure, not firm pressure, is indicat-ed to prevent trauma. Clean gloves are used for discontinuing a peripheral IV access because gloved hands will handle the external dressing, tubing, and tape, which are not sterile.