TMC Test Practice EXAM QUESTIONS ALL VERSIONS 2025 | LATEST AND ACCURATE REAL EXAM QUESTIONS WITH DETAILED ANSWERS | VERIFIED FOR GUARANTEED PASS | LATEST UPDATE

A patient on the medical floor is receiving supplemental oxygen at 4 L/min by nasal cannula. A pulse oximeter is showing an SPO2 of 74% with a heart rate of 68 bpm. The respiratory therapist determines the pulse by palpation is 98 bpm. The therapist should A. replace the electrode with a new one B. try a different location with the pulse ox probe C. increase flow rate to 5 L/min D. switch the patient to 50% Venturi mask - ANSWER B. try a different location with the pulse ox probe A patient receiving volume-controlled ventilation has an infrared CO2 detector attached at the end of the ET tube. The capnograph shows a PetCO2 of 47 torr. The respiratory therapist should A. continue current therapy B. increase minute ventilation C. increase expiratory time D. increase inspiratory flow rate - ANSWER B. increase minute ventilation Which of the following would be a sufficient reason to discontinue a spontaneous breathing trials A. blood pressure increases from 110/80 to 118/88 mmHg B. development of confusion or disorientation C. heart rate increases from 78 to 92 bpm D. respiratory rate increases from 18 to 26 - ANSWER B. development of confusion or disorientation Which of the following is needed to calculate alveolar oxygen tension? A. BP and FIO2 B. VD/VT, PAO2 C. QS/QT, deadspace D. PetCO2 and PaO2 - ANSWER A. BP and FIO2 A patient with COPD is receiving volume-controlled ventilation with an I:E ratio of 1:3. A chest radiograph shows increased air-trapping. The physician orders a change in the I:E ratio to decrease air-trapping. Which of the following will accomplish this? A. decrease expiratory time B. decrease inspiratory flow rate C. increase inspiratory time D. increase inspiratory flow rate - ANSWER D. increase inspiratory flow rate Immediately after inserting a nasal pharyngeal airway, the patient begins to cough uncontrollably. Which of the following is the most likely cause? A. patient has significant sputum in the upper airway B. airway is too long C. airway diameter is too large D. too much water-soluble lubricant was used - ANSWER B. airway is too long Which of the following is most indicative of right heart failure? A. decreased CVP, decreased PAP B. increased PAP, decreased cardiac output C. increased CVP, decreased PAP D. increased PAP, decreased PCWP - ANSWER C. increased CVP, decreased PAP A patient in the emergency department (ED) becomes unconscious and has a cardiac rhythm consistent with asystole. The respiratory therapist should IMMEDIATELY A. begin chest compressions B. administer epinephrine C. confirm asystole in a second lead D. administer Atropine - ANSWER C. confirm asystole in a second lead An adult patient with asthma is receiving Xopenex by small volume nebulizer T.I.D. at a dosage of 0.63 mg. The patient complains of dizziness, tingling in his fingers, and anxiety with each treatment. The therapist should A. decrease dosage to 0.31 mg B. switch to Albuterol C. switch to Atropine sulfate D. switch to cromolyn sodium (Intal) - ANSWER B. switch to Albuterol An 84-kg (185-lb) 6-ft 1-in (185-cm) male is receiving mechanical ventilation by a volume-controlled ventilator in the assist/control mode on the following settings: Mandatory rate 16 VT 600 mL FIO2 0.5 PEEP 10 cmH2O ABGs pH 7.46 PaCO2 34 mmHg PO2 100 mmHg HCO3- 24 mEq/L BE 0 mEq/L Which of the following represents the most appropriate action? A. add 50 mL deadspace B. decrease VT to 500 mL C. decrease PEEP D. decrease rate to 10 - ANSWER A. add 50 mL deadspace An 84-kg (185-lb) 6-ft 1-in (185-cm) male is receiving mechanical ventilation by a volume-controlled ventilator in the assist/control mode on the following settings: Mandatory rate 18/min VT 600 mL FIO2 0.4 PEEP 5 cm H2O ABGs pH 7.28 PaCO2 56 mm Hg PO2 71 mm Hg HCO3- 27 mEq/L BE +3 mEq/L Which of the following represents the most appropriate action? A. increase FIO2 to 0.5 B. increase rate to 20 C. increase PEEP to 8 cmH2O D. increase VT to 650 - ANSWER B. increase rate to 20 Which pressure should not be exceeded when adding air to an oral endotracheal tube cuff? A. 25 mmHg B. 15 mmHg C. 20 mmHg D. 30 mmHg - ANSWER C. 20 mmHg A 4-year-old patient in the emergency room (E.R.) shows significant signs of respiratory distress including inspiratory stridor and tachypnea. The patient is drooling. The physician feels the patient has acute epiglottitis and orders intubation. Which of the following methods of intubation would be most appropriate? A. perform oral intubation with a stylet B. intubate with a bronchoscope C. visualize the oropharynx with a tonsil suction device D. nasal intubation with magill forceps - ANSWER B. intubate with a bronchoscope While performing minimum occluding volume technique on an 80-kg (176-lb) male with an 8.0-mm tube, the therapist auscultates a high-pitched sound over the neck at the top of each mechanical breath. The therapist should A. record results and monitor the patient B. obtain a new ET tube C. remove air from the cuff D. add air to the cuff - ANSWER D. add air to the cuff Which of following calculations will determine inspiratory capacity (IC)? A. IRV - TLC - RV B. TLC - FRC C. TLC - VT - ERV D. ERV + VT + IRV - ANSWER B. TLC - FRC While transporting at patient from the emergency department (ED) to the intensive care unit (ICU), the respiratory therapist suspects the oral endotracheal tube has changed position. The quickest way to assess the ET tube position would be to A. auscultate breath sounds B. visualize diaphragmatic excursion C. obtain a chest x-ray D. analyze end-tidal CO2 - ANSWER A. auscultate breath sounds A pressure-volume ventilator graphic is observed on a patient receiving mechanical ventilation. The patient's estimated dynamic compliance is A. 50 mL/cmH2O B. 44 mL/cmH2O C. 20 mL/cmH2O D. 32 mL/cmH2O - ANSWER C. 20 mL/cmH2O Which of the following represents the most effective method of preventing nosocomial infections in a hospital setting? A. use of sterile gloves B. use of N-95 respirators C. use of alcohol wipes on equipment D. diligent hand washing - ANSWER D. diligent hand washing