Nursing Elites

1. A client with asthma has low-pitched wheezes present on the final half of exhalation. One hour later the client has high-pitched wheezes extending throughout exhalation. This change in assessment indicates to the nurse that the client

• A. Has increased airway obstruction
• B. Has improved airway obstruction
• C. Needs to be suctioned
• D. Exhibits hyperventilation

Correct answer: B

Rationale: The higher pitched a sound is, the more narrow the airway. Therefore, the obstruction has increased or worsened. With no evidence of secretions, there is no support to indicate the need for suctioning. Wheezes changing from low-pitched to high-pitched and extending throughout exhalation suggest a progression in airway constriction, indicating an increase in airway obstruction. Option B is incorrect because the change in wheezes from low to high pitch does not suggest an improvement in airway obstruction. Option C is incorrect as there is no indication of secretions requiring suctioning. Option D is incorrect as hyperventilation is not typically associated with the described change in wheezes.

2. A client in the ICU has been intubated and placed on a ventilator. The physician orders synchronous intermittent mandatory ventilation (SIMV). Which statement best describes the work of this mode of ventilation?

• A. The ventilator delivers a set rate and tidal volume regardless of whether the client is attempting to breathe
• B. The ventilator coordinates delivered breaths with the client's respiratory efforts
• C. The ventilator provides a supplemental breath for every third breath of the client
• D. The ventilator provides breaths during the expiratory phase of the client's respirations

Correct answer: B

Rationale: Synchronous intermittent mandatory ventilation (SIMV) is a ventilation mode that coordinates delivered breaths with the client's own respiratory efforts. This mode allows the client to initiate breaths, with the ventilator providing preset breaths at a controlled rate and volume. Option A is incorrect because in SIMV, the ventilator syncs with the client's respiratory efforts. Option C is incorrect as it does not accurately depict the way SIMV works. Option D is also incorrect as SIMV does not specifically provide breaths during the expiratory phase of the client's respirations. Therefore, the correct answer is B, where the ventilator coordinates breath delivery with the client's breathing efforts.

3. Which of the following diseases is caused by the Bordetella pertussis bacterium?

• A. German Measles
• B. RSV
• C. Meningitis
• D. Whooping Cough

Correct answer: D

Rationale: Bordetella pertussis is the bacterium responsible for causing Whooping Cough, also known as pertussis. Meningitis can be caused by various bacteria, but not specifically by Bordetella pertussis. German Measles, also known as Rubella, and RSV (Respiratory Syncytial Virus) are viral infections and are not caused by the Bordetella pertussis bacterium. Therefore, the correct answer is Whooping Cough, caused by Bordetella pertussis.

4. What drives respiration in a patient with advanced chronic respiratory failure?

• A. Hypoxemia
• B. Hypocapnia
• C. Hypercapnia
• D. None of the above

Correct answer: A

Rationale: In patients with advanced chronic respiratory failure, such as those with chronic obstructive pulmonary disease (COPD), the respiratory drive shifts from being primarily stimulated by high levels of carbon dioxide (hypercapnia) to being driven by low oxygen levels (hypoxemia). This shift is due to the body's adaptation to chronic respiratory acidosis and hypoxemia. As a result, hypoxemia becomes the primary stimulus for respiration in these patients. Hypocapnia, a low level of carbon dioxide, is not a common driver of respiration in patients with advanced chronic respiratory failure. Therefore, the correct answer is hypoxemia.

5. A patient is admitted to the emergency department with an open stab wound to the left chest. What is the first action that the nurse should take?

• A. Position the patient so that the left chest is dependent
• B. Tape a nonporous dressing on three sides over the chest wound
• C. Cover the sucking chest wound firmly with an occlusive dressing
• D. Keep the head of the patient's bed at no more than 30 degrees elevation

Correct answer: B

Rationale: The correct initial action for a patient with an open stab wound to the chest is to tape a nonporous dressing on three sides over the chest wound. This dressing technique allows air to escape during expiration but prevents air from entering the pleural space during inspiration, helping to prevent tension pneumothorax. Placing the patient so that the left chest is dependent or covering the wound with an occlusive dressing can trap air in the pleural space, leading to tension pneumothorax. Keeping the head of the bed elevated at 30 to 45 degrees helps facilitate breathing and is not the first action to take when managing an open chest wound.

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