What is the therapeutic action of the phenothiazines in reducing nausea?
A) Increasing gastric motility
B) Change responsiveness of the chemoreceptor trigger zone (CTZ)
C) Blocking histamine receptors
D) Producing sedation
B
Feedback:
Phenothiazines are centrally acting antiemetics, which change the responsiveness or stimulation of the CTZ in the medulla.
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A client is scheduled for surgery at 8 A.M. with general anesthesia. Which of the following instructions should the nurse give the client?
a. "Do not have anything to drink after midnight." b. "Take your oral medications just before surgery." c. "You can drink water until 6 A.M.." d. "You can have a piece of toast and coffee at 6 A.M."
A multiple-gestation client has just had her first biophysical profile (BPP) of 8 at 33 weeks' gestation. When would she return for the next BPP?
1. In 1–2 weeks 2. In 3–4 weeks 3. In 5–6 weeks 4. In 7–8 weeks
The nurse anticipates that an order for an isotonic intravenous (IV) solution will read
a. 0.45% sodium chloride. b. 0.9% sodium chloride. c. 3% sodium chloride. d. 5% dextrose in water.
A woman is receiving magnesium sulfate as part of her treatment for severe preeclampsia. The nurse is monitoring the woman's serum magnesium levels. Which level would the nurse identify as therapeutic?
A) 3.3 mEq/L B) 6.1 mEq/L C) 8.4 mEq/L D) 10.8 mEq/L