Relative risk can usually be derived from which of the following study designs? a. Case control and cohort

b. None of the above

c. Cohort and randomised controlled trial

d. Case control and randomised controlled trial
e. Case series and ecological

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