A prescription for a medication may be ordered by

One of three quality-control results for an instrument violates the 12s rule. What is the proper course of action?

A) Continue to run samples but mark the results as "pending QC approval." B) Use a back-up instrument for running patient specimens until resolution of the problem. C) Refrain from running patient specimens until resolution of the problem. D) Because the 12s rule is only a warning, continue running patient specimens.

Positive pressure ventilation has been implicated in the development of decreased ____ and arterial blood pressure.

A. end-diastolic volume B. end-systolic volume C. stroke volume D. cardiac output