Because of its synergizing effect on barbiturates, the herb the nurse should ask if the patient taking barbiturates is also using is:
a. St. John's wort.
b. aloe vera.
c. valerian.
d. ginkgo.
Question 2
Homeostasis of the hydrogen ion concentration in body fluids depends on the ratio of carbonic acid to bicarbonate in the extracellular fluid, which is:
a. 1:5.
b. 1:10.
c. 1:15.
d. 1:20.