Current theories of the antidepressant action of drugs focus less on the initial biochemical effects of the drugs and more on the:

Anurse is caring for a client who is receiving a continuous iv infusion of magnesium sulfate for preterm labor. the nurse should discontinue the infusion and prepare to administer calcium gluconate if the client demonstrates which of the following findings? (select all that apply) a. urine output 80 ml in 4 hr b. absence of deep-tendon reflexes c. report of chills d. decreased level of consciousness e. systolic blood pressure 130 mm hg

Mr. wayne is a 38-year-old man with a significant history of elevated cholesterol levels. his father died at age 42 from a massive heart attack secondary to elevated cholesterol and triglycerides, and two of his older siblings are currently taking medications to lower their cholesterol levels. mr. wayne makes an appointment to discuss his risk for hypercholesterolemia. the nurse recognizes that mr. wayne is at risk for familial hypercholesterolemia because this is an autoomal dominant inherited condition. a. describe the pattern of autosomal dominant inheritance. b. mr. wayne asks what chance his children have of developing familial hypercholesterolemia. how should the nurse respond? c. explain the phenomenon of penetrance observed in autosomal dominant inheritance.

Feedback mechanisms regulate the rate of enzyme activity, effectively "turning off' an enzyme in a reversible way until more product is needed. which of the following would be most effective as a feedback mechanism? a. reduced concentration of product b. increased concentration of substrate c. a change in ph d. temporary binding of a non-substrate molecule in the active site