ATI RN
Critical Care Nursing NCLEX Questions Questions
Question 1 of 5
A patient’s status deteriorates and mechanical ventilation i s now required. The pulmonologist wants the patient to receive 10 breaths/min from the ventilaabtirobr.c bomu/tt ewst ants to encourage the patient to breathe spontaneously in between the mechanical breaths at his own tidal volume. This mode of ventilation is referred to by what term?
Correct Answer: C
Rationale: Rationale: 1. Intermittent Mandatory Ventilation (IMV) allows the patient to breathe spontaneously between the preset mechanical breaths. 2. It provides a set number of breaths per minute while allowing the patient to initiate additional breaths at their own tidal volume. 3. IMV is a partial ventilatory support mode, providing a balance between controlled and spontaneous breathing. 4. Assist/Control Ventilation (A) provides full support with every breath initiated by the patient or the ventilator. 5. Controlled Ventilation (B) does not allow for spontaneous breaths by the patient. 6. Positive End-Expiratory Pressure (D) is a separate mode focusing on maintaining positive pressure at the end of expiration, not providing breaths.
Question 2 of 5
A PaCO 2 of 48 mm Hg is associated with what outcome?
Correct Answer: B
Rationale: The correct answer is B: Hypoventilation. A PaCO2 of 48 mm Hg indicates an elevated level of carbon dioxide in the blood, which is typically seen in hypoventilation where the lungs are not effectively removing CO2. Hypoventilation leads to respiratory acidosis. Option A is incorrect because hyperventilation would decrease PaCO2 levels. Option C is incorrect as it does not directly relate to PaCO2 levels. Option D is incorrect as increased excretion of HCO3- would not directly affect PaCO2 levels.
Question 3 of 5
A 53-year-old, 80-kg patient is admitted to the cardiac sur gical intensive care unit after cardiac surgery with the following arterial blood gas (ABG ) levels. What is the nurse’s interpretation of these values? pH 7.4 PaCO 40 mm Hg Bicarbonate 24 mEq/L PaO 95 mm Hg O saturation 97% Respirations 20 breaths per minute
Correct Answer: C
Rationale: The correct interpretation is C: Normal ABG values. 1. pH is within the normal range of 7.35-7.45. 2. PaCO2 is 40 mm Hg, within the normal range of 35-45 mm Hg. 3. Bicarbonate is 24 mEq/L, within the normal range of 22-26 mEq/L. 4. PaO2 is 95 mm Hg, within the normal range of 80-100 mm Hg. 5. Oxygen saturation is 97%, which is normal. 6. Respirations are also within the normal range at 20 breaths per minute. Overall, all values fall within the normal range, indicating a well-maintained acid-base balance. Other choices are incorrect because there are no abnormalities that would suggest compensated metabolic acidosis, metabolic alkalosis, or respiratory acidosis based on the given ABG values.
Question 4 of 5
The nurse is caring for a mechanically ventilated patient. T he primary care providers are considering performing a tracheostomy because the patienatb iirsb .hcoamv/itensgt difficulty weaning from mechanical ventilation. Related to tracheostomy, the nurse understands which of the following?
Correct Answer: C
Rationale: The correct answer is C: Procedures performed in the operating room are associated with fewer complications. This is because performing a tracheostomy in the operating room allows for better control of the environment, equipment, and expertise of the surgical team. In this setting, the risk of complications such as bleeding, infection, and injury to surrounding structures is minimized. Choices A, B, and D are incorrect: A: Patient outcomes are better if the tracheostomy is done within a week of intubation - This statement is not universally true and depends on individual patient factors. Timing of tracheostomy should be based on the patient's clinical condition and not a set timeline. B: Percutaneous tracheostomy can be done safely at the bedside by the respiratory therapist - While percutaneous tracheostomy can be performed at the bedside, it is typically done by a trained physician or surgeon due to the potential risks and complications involved. D: The greatest risk after a per
Question 5 of 5
The nurse is assisting with endotracheal intubation of the p atient and recognizes that the procedure will be done in what order? (Put a comma and s pace between each answer choice.)
Correct Answer: D
Rationale: The correct answer is D. The first step in endotracheal intubation is to insert the endotracheal tube with a laryngoscope and blade to visualize the vocal cords and guide the tube into the trachea. This ensures proper placement of the tube for effective ventilation. Assessing the balloon symmetry (Choice A) and lung fields (Choice B) would come after the tube is successfully inserted. Inflating the balloon of the endotracheal tube (Choice C) should be the last step to secure the tube in place.