TMC Version 4 Exam with Questions and Answers

TMC Version 4 Exam with Questions and Answers Which of the following equipment is most helpful at measuring FRC in a patient who has significant non-ventilated lung spaces? A. peak flow meter B. plethysmograph C. helium analyzer for a helium dilution test D. nitrogen analyzer for a nitrogen washout test ANSWER The correct answer is : B Explanation : You can determine FRC in three different ways - body box, nitrogen washout, or helium dilution. If someone has non-ventilated lung space, nitrogen washout and helium dilution are not helpful and may be inaccurate. FRC determined by body box will be higher because it can access non-ventilated lung space and therefore is more accurate. The respiratory therapist is making a home visit to evaluate an oxygen-dependent patient. The patient has 3+ pitting peripheral edema and has not followed the physician's orders to limit fluid intake. You would expect which of the following hemodynamic values? A. low mean arterial pressure B. elevated right sided preload with a normal to low right ventricular after load C. reduced cardiac index D. elevated PCWP with a low cardiac output ANSWER The correct answer is : B Explanation :