Download NBRC TMC/CRT/RRT EXAM 2025|ACTUAL 200+Qs&As WITH RATIONALES|2025 SPRING|GRADED A+ and more Exams Health sciences in PDF only on Docsity!
NBRC TMC/CRT/RRT EXAM 2025 |ACTUAL 200+Qs&As
WITH RATIONALES|LATEST UPDATE 2025 SPRING|A+PASS
ASSURED|BRAND NEW 2025- 2026
The physician has ordered O2 to be set up on a PATIENT who has a spontaneous tidal volume of 500 mL and an inspiratory time of 1 second. Which of the following O2 delivery devices will deliver a flow that meets or exceeds this PATIENT's inspiratory flow? A. 35% air-entrainment mask at 6 L/min B. 60% aerosol mask at 12 L/min C. NRB mask at 15 L/min D. Simple O2 mask at 10 L/min Rationale: 500 mL = 0.5 L 0.5/1 = 0.5 L/s (change L/s to ?/min by multiplying by 60 0.5 L x 60= 30 L/min Select the device that delivers a flow of at least 30L/min A. 35% air-entrainment mask at 6 L/min PATIENT breathing 50% oxygen has a PaO2 of 248 torr. Which of the following should the RT recommend? A. Discontinue O2 therapy B. Decrease the oxygen to 30% C. Titrate oxygen to maintain an SpO2 > 93% D. Repeat the blood gases because the PaO2 is not possible on this FiO2. C. Titrate oxygen to maintain an SpO2 > 93% Rationale: A PaO2 of 250 torr is normal on 50% O2. Remember, to determine the normal PaO2 on any given O2%, multiply the O2% by 5. This is an approximation. If titrate was not a choice, then you would discontinue the oxygen. A PATIENT is receiving 30% oxygen via an air-entrainment mask at a flow of 5 L/min. The total flow delivered by this device is which of the following? A. 36 L/min B. 45 L/min C. 54 L/min D. 60 L/min Rationale: (*Use 21 with O2 % less than 40%)
or 8:1 ratio 8+1= 9 9x5 = 45 L/min B. 45 L/min Secretions tend to become thicker if the inspired air has which of the following characteristics? A. A relative humidity of 100% at body temperature B. 32 mg H2O per liter of gas C. A water vapor pressure of 47 mmHg D. 48 mg H2O per liter of gas B. 32 mg H2O per liter of gas A PATIENT receiving 38 mg H2O per liter of gas from a nebulizer has a humidity deficit of which of the following? A. 6 mg/L B. 9 mg/L C. 12 mg/L D. 18 mg/L 44 - 38= 6 A. 6 mg/L A PATIENT is receiving O2 from an E cylinder at 4 L/min through a nasal cannula. The cylinder pressure is 1900 psig. How long will the cylinder run until it is empty? A. 47 min B. 1.7 h C. 2.2 h D. 3.6 h Rationale: cylinder = 0.28 1900x0.28/4 = 133/60 = 2. Ans:>>C. 2 hours, 21 minutes After the Respiratory Therapist sets up a nonrebreathing mask on a PATIENT at a
C. 16 mL/dL D. 18 mL/dL Rationale: (Hb x 1.36 x SaO2)
- (0.003 x PaO2) (14 x 1.36 x 0.95) + (0.003 x 88) 18.088 + 0. = 18. Ans:>>D. 18 mL/dL A severe COPD PATIENT arrives in the emergency department on a 2 L/min nasal cannula. Arterial blood gas results follow: pH: 7. PaCO2: 67 mmHg PaO2: 62 mmHg HCO3: 38 mEq/L Which of the following is the most appropriate recommendation? A. Increase the liter flow to 4 L/min B. Maintain the current O2 level C. Institute noninvasive positive pressure ventilation (NPPV) D. Place on a NRB mask at 12 L/min B. Maintain the current O2 level The respiratory therapist receives an order to set up a moderate level of O on a PATIENT who arrives in the ED breathing at a rate of 35 breaths/min. Which of the following O2 delivery devices is most appropriate to use in this situation? A. Simple O2 mask at 10 L/min B. Nasal cannula at 4 L/min C. NRB Mask at 15 L/min D. Air-entrainment mask at 40% O D. Air-entrainment mask at 40% O After connecting a nasal cannula to the humidifier outlet, you kink the tubing and hear a whistling noise coming from the humidifier. Which of the following most likely has caused this?
A. The humidifier jar is cracked B. The capillary tube in the humidifier is disconnected C. The humidifier has no leaks D. The top of the humidifier is not screwed on tightly C. The humidifier has no leaks You notice that the PATIENT's secretions have become thicker and more difficult to suction since the ventilator humidifier was replaced with an HME. The RT should recommend which of the following? A. Increase inspiratory flow B. Decrease the temperature to the HME C. Replace with a new HME D. Replace the HME with a conventional heated humidifier D. Replace the HME with a conventional heated humidifier Which of the following are indications for cool, bland aerosol therapy?
- A cough must be induced for sputum collection
- Mobilization of secretions must be improved
- Postextubation inflammation of the upper airway must be treated A. 1 only B. 1 and 3 only C. 2 and 3 only D. 1, 2, and 3 D. 1, 2, and 3 You notice that very little mist is being produced by a nebulizer attached to an aerosol mask. Which of the following could be responsible for this?
- The liter flow is too high
- The nebulizer jet is clogged with lint
- The filter on the capillary tube is obstructed A. 1 only B. 2 only C. 1 and 3 only D. 2 and 3 only D. 2 and 3 only An autoimmune compromised PATIENT is to be placed on oxygen with a
C. Plasma protein D. Potassium D. Potassium The term used to describe a condition is which a PATIENT has difficulty breathing while in the supine position is which of the following? A. Orthopnea B. Hypopnea C. Eupnea D. Bradypnea A. Orthopnea A PATIENT enters the emergency department, and on initial examination the RT observes paradoxical chest movement. Which of the following should the therapist suspect? A. Pulmonary edema B. Pneumonia C. Flail chest D. Pleural effusion C. Flail chest Perfusion in the extremities may best be determined by which of the following methods? A. Obtaining ABG studies and determining PaO2 level B. Assessing the PATIENTs SpO C. Assessing capillary refill D. Palpating a brachial pulse C. Assessing capillary refill While palpating the chest, the RT determines that there is decreased fremitus over the right lower lobe. This may be the result of which of the following?
- Pneumothorax
- Pleural effusion
- Pneumonia A. 1 only B. 2 only C. 1 and 2 only D. 2 and 3 only
C. 1 and 2 only A chest x-ray film obtained after intubation shows that the tip of the ET tube is resting at the fourth rib. Which of the following actions should be taken? A. The tube should be advanced 2 cm B. The tube should be advanced until equal breath sounds are heard C. The tube should remain at this level D. The tube should be withdrawn 3 cm D. The tube should be withdrawn 3 cm The RT is reviewing the chart of a PATIENT suspected of having congestive heart failure. This condition would best be indicated with an elevation in which of the following cardiac biomarkers? A. Troponin B. Myoglobin C. Creatine kinase (CK) D. B-type natriuretic peptide (BNP) BNP > 500 = CHF D. B-type natriuretic peptide (BNP) A PATIENT is suspected of suffering acute myocardial infarction. Which of the following lab values would be increased in the PATIENT's blood? A. Hematocrit B. CK-MB C. BNP D. Albumin B. CK-MB The RT notes a respiratory rate of 36 breaths/min in an adult PATIENT's chart. The PATIENT's breathing pattern is best described by which of the following? A. Hyperventilation B. Dyspnea C. Hypoventilation D. Tachypnea D. Tachypnea The RT is assessing a PATIENT with severe emphysema and observes pedal edema and jugular venous distention. The therapist should note in the PATIENT's chart that
B. Change to a fenstrated trach tube You are called to a PATIENT's room because a ventilator alarm is sounding. You hear an audible leak around the PATIENT's ET tube during a ventilator breath and notice the exhaled volume reading is 150 mL less than the set Vt. You check the cuff pressure and find that it is 12cm H2O. Which of the following is the appropriate action to take? A. Maintain the current cuff pressure and increase the PATIENT's Vt to compensate for the leak.
B. Instill enough air to maintain a cuff pressure of 30 mm Hg. C. Instill air into the cuff to a pressure of 20 - 30 cm H2O. D. Instill enough air until only a slight audible leak is heard. C. Instill air into the cuff to a pressure of 20 - 30 cm H2O. You want to pass a suction catheter into the PATIENT's left lung to obtain a sputum specimen. What is the most appropriate method of accomplishing this? A. Have the PATIENT turn his or her head to the left B. Have the PATIENT turn his or her head to the right C. Use a coude suction catheter D. Use a catheter that is one half the internal diameter of the PATIENT's airway C. Use a coude suction catheter The RT is using a 12 - French suction catheter to suction a female PATIENT who is intubated with a 7.0-mm ET tube and is having difficulty removing the thick secretions. The suction pressure used is - 120 mm Hg. Which of the following should be recommended to correct this problem? A. Increase the suction pressure to - 140 mm Hg B. Instill 5 mL of normal saline down the ET tube C. Change to a 14 French suction catheter D. Change to a coude-tipped suction catheter A. Increase the suction pressure to - 140 mm Hg The RT is called to pediatric ICU to suction a 6 - year-old ventilator PATIENT with pneumonia who is intubated with a 5.0 mm ET tube. Which of the following represents the most appropriate catheter size and suction pressure to use on this PATIENT? A. 8 - Fr catheter, - 100mm Hg B. 10 - Fr catheter, - 60mm Hg C. 8 - Fr catheter, - 60mm Hg D. 10 - Fr catheter, - 100mm Hg A. 8 - Fr catheter, - 100mm Hg Which of the following will increase the possibility of the ET tube cuff causing tracheal mucosa damage?
- Maintaining intracuff pressure of 38 cm H2O
- Using minimal leak technique
- Using a low-volume, high-pressure cuff
- Using minimal occluding volume technique
- Bronchospasm
- Pneumothorax
- Hypoxemia
- Pulmonary hemorrhage A. 1 and 2 only B. 2 and 3 only C. 1, 2, and 4 only D. 2, 3, and 4 only C. 1, 2, and 4 only To aid in the evacuation of air from the pleural space, a chest tube should be inserted at what level? A. Supraclavicular space B. Second intercostal space anteriorly at the midclavicular level C. Sixth intercostal space anteriorly D. Eighth intercostal space anteriorly B. Second intercostal space anteriorly at the midclavicular level The RT notices on a PATIENT's chest tube drainage system that there is fluctuation of the water level in the water-seal chamber with each PATIENT breath, and that air bubbles are seen only in the suction control chamber, which has a suction pressure of
- 20 cm H2O. The most appropriate action is which of the following? A. Clamp the chest tube and check for leaks B. Insert Which of the following ventilator waveforms best enables a RT to evaluate the presence of auto- peep in a PATIENT? A. flow/time B. flow/volume C. pressure/time D. volume/pressure A. flow/time The following data are obtained for a PATIENT who is receiving VC, A/C ventilation: Peak pressure: 30 cm H2O Plateau pressure: 20 cm H2O Set Vt: 800 mL Exhaled Vt: 700
mL PEEP: 10 cm H2O What is the static compliance? A. 35 B. 40 C. 27 D. 70 D. 70 A PATIENT is seen in the Emergency Department for complaints of nausea and vomiting. A nasogastric tube has been inserted and the PATIENT is started on lasix. Which of the following should the respiratory therapist monitor? A. Cardiac enzymes B. Serum electrolytes C. Arterial blood gases D. Cell hydration level B. Serum electrolytes While instructing a PATIENT prior to a vital capacity maneuver, the respiratory therapist should direct the PATIENT to A. exhale to residual volume and inhale to inspiratory capacity. B. inhale to total lung capacity then exhale to residual volume. C. exhale normally then inhale to total lung capacity. D. inhale normally then exhale to functional residual capacity. B. inhale to total lung capacity then exhale to residual volume. A PATIENT involved in an automobile accident is brought to the ED with tachypnea, tracheal deviation to the right, splinting, asymmetrical chest movement, and decreased breath sounds on the left side. The respiratory therapist should initially A. insert a chest tube. B. administer 100% oxygen via mask. C. perform endotracheal intubation. D. initiate non-invasive positive pressure ventilation. B. administer 100% oxygen via mask. A 77-year-old male PATIENT is admitted to the emergency room with shortness
B. check the transducer dome for air bubbles. C. flush the catheter with heparin solution. D. attempt to draw blood from the arterial line. B. check the transducer dome for air bubbles. An optimal PEEP study is initiated on a PATIENT receiving mechanical ventilation. The respiratory therapist first places the PATIENT on a PEEP of 10 cm H2O for 20 minutes with no adverse effects. The PEEP is increased to 15 cm H2O and the PATIENT's heart rate rises significantly with a severe fall in the blood pressure. Based upon the above information, the therapist should conclude that the PATIENT is suffering from A. peripheral vasoconstriction. B. hypovolemia. C. increased venous return. D. increased SVR B. hypovolemia. A post-operative thoracotomy PATIENT is receiving incentive spirometry therapy Q2H. Breath sounds are diminished in the bases of the lungs with scattered crackles. The PATIENT's inspiratory capacity has decreased over the past 2 days. A chest radiograph indicates thin-layered basilar densities. Which of the following has most likely occurred? A. Atelectasis B. Pneumonia C. Pulmonary edema D. Consolidation A. Atelectasis A PATIENT is in full cardiopulmonary arrest and after several attempts, the PATIENT is orally intubated with a size 7 mm ID endotracheal tube. The nurse is unable to establish IV access. The ECG monitor shows sinus bradycardia. Which of the following drugs should be administered through the endotracheal tube? A. Lidocaine B. Epinephrine C. Atropine D. Dobutamine C. Atropine The results of a PATIENT's spirometry are recorded as follows: Predicted
Observed FVC (L) 3.5 2. FEV1 (L) 2.7 2. FRC (L) 2.5 1. TLC (L) 5.6 4. These results are indicative of A. normal lung function. B. sarcoidosis. C. acute bronchitis. D. cystic fibrosis. B. sarcoidosis. The respiratory therapist is in charge of transporting a PATIENT with multiple trauma to a regional trauma center in a fixed wing aircraft. Which of the following should the therapist be most concerned about during the transport? A. Tissue oxygenation B. Pneumothorax C. Pulmonary embolus D. Humidification of the inspired gas A. Tissue oxygenation Transcutaneous monitoring of PO2 values will correlate well with arterial blood gas PO2 values in which of the following situations?
- Hypotension
- Hypothermia
- Pneumonia A. 1 only B. 3 only C. 1 and 2 only D. 2 and 3 only B. 3 only A PATIENT is being ventilated in the intensive care unit. The following data is obtained: Mode VC, SIMV Mandatory rate 12
C. Complete blood cell count D. Electrocardiograph D. Electrocardiograph An adult PATIENT is intubated with a 7.0 mm ID endotracheal tube. What size suction catheter should be used to suction this PATIENT? A. 8 French B. 10 French C. 12 French D. 14 French B. 10 French Which of the following would be the most appropriate test to evaluate partial vocal cord paralysis in a PATIENT complaining of difficulty swallowing? A. SB nitrogen elimination B. Maximum voluntary ventilation C. Flow volume loop D. Diffusing capacity C. Flow volume loop In order to reduce a PATIENT's PaCO2 from 40 torr to 32 torr, all of the following could be increased EXCEPT A. tidal volume. B. alveolar ventilation. C. respiratory rate. D. physiologic deadspace D. physiologic deadspace While examining the chest drainage system of a mechanically-ventilated PATIENT following thoracotomy, the respiratory therapist observes bubbling in the water-seal chamber during inspiration. This would indicate A. a leak in the chest drainage system. B. air leaving the pleural space. C. excessive pressure from the suction regulator. D. inadequate water level in the water-seal chamber. B. air leaving the pleural space. A PATIENT develops ascites and shortness of breath. Where is tissue edema most
likely to show up first? A. Ankles B. Abdomen C. Thorax D. Hands B. Abdomen An acceptable level of PEEP therapy can be identified by all of the following EXCEPT A. the lower inflection point of a volume-pressure loop graphic. B. acceptable oxygenation without cardiovascular side effects. C. increasing oxygenation with increasing plateau pressure. D. increasing static compliance with acceptable oxygenation C. increasing oxygenation with increasing plateau pressure. While suctioning a PATIENT who is being mechanically ventilated, the respiratory therapist notes the following ECG pattern on the monitor: Suctioning is stopped and the PATIENT is returned to the ventilator. Which of the following drugs should the respiratory therapist recommend FIRST? A. 100% oxygen B. atropine C. lidocaine D. epinephrine A. 100% oxygen Adjusting the inspiratory flow during an IPPB treatment will result in a change in A. respiratory rate. B. peak pressure. C. tidal volume. D. inspiratory time D. inspiratory time A PATIENT in the intensive care unit has the following hemodynamic measurements: CVP 4 mm Hg PAP 48/16 mm Hg PCWP 8 mm
