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TMC EXAM 4 2022 ( with questions & 100% verified correct answers)

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TMC EXAM 4 2022 ( with questions & 100% verified correct answers)Which of the following equipment is most helpful at measuring FRC in a patient who has significant non-ventilated lung spaces? A. nit... rogen analyzer for a nitrogen washout test B. helium analyzer for a helium dilution test C. plethysmograph D. peak flow meter - ✔✔The correct answer is : C 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. elevated PCWP with a low cardiac output B. low mean arterial pressure C. elevated right sided preload with a normal to low right ventricular after load D. reduced cardiac index - ✔✔The correct answer is : C Explanation : Right-sided preload is another name for CVP (central venous pressure). Peripheral edema is one of the signs associated with right heart failure, which results in an elevated CVP with a normal or low pulmonary artery pressure (PAP), a.k.a. right ventricular afterload. A ventilator-dependent patient is scheduled for an MRI, which will require a transport of 90 minutes. The patient is receiving humidification with a heated- humidification system. A transport ventilator is available. How should a respiratory therapist assure that humidification will be provided to the patient during the MRI procedure? A. Provide a pass-over humidifier B. Provide an HME C. Provide ventilation with a manual resuscitator D. Use the same humidification system in use on the primary ventilator - ✔✔The correct answer is : B Explanation : A heat moisture exchanger (HME) is appropriate for a transport of only 90 min. Furthermore, the scenario does not suggest that the patient has thick, retained secretions, therefore an HME may be applied. [Show More]

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