Which statement by the nurse when explaining the purpose of positive end-expiratory pressure (PEEP) to the patient's caregiver is accurate?

"PEEP prevents the lung air sacs from collapsing during exhalation."

"PEEP allows the breathing machine to deliver 100% 02 to the lungs."

"PEEP will push more air into the lungs during inhalation."

"PEEP will prevent lung damage while the patient is on the ventilator."

Answer and Explanation

The Correct Answer is A

A.   Positive end-expiratory pressure (PEEP) is applied during mechanical ventilation to prevent alveolar collapse at the end of expiration. It helps maintain the patency of the alveoli, improving oxygenation and preventing atelectasis.
B.   While PEEP can improve oxygenation by recruiting collapsed alveoli and increasing functional residual capacity, it does not directly affect the concentration of oxygen delivered by the ventilator. Oxygen concentration is adjusted separately from PEEP settings.
C.   PEEP is applied at the end of expiration to maintain positive pressure in the airways and alveoli, preventing them from collapsing. It does not directly affect the delivery of air during inhalation.
D.   PEEP can help prevent lung damage by maintaining alveolar recruitment and reducing the risk of atelectasis and barotrauma. However, it is not the sole factor in preventing lung damage, and other ventilator settings and strategies also play a role in protecting the lungs.

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Correct Answer is A

Explanation

A. Elective cardioversion involves the synchronized delivery of a therapeutic electrical shock to the heart to restore normal sinus rhythm in a patient with a tachyarrhythmia, such as atrial fibrillation or atrial flutter. However, ventricular tachycardia (VT) is a life-threatening arrhythmia characterized by a rapid heart rate originating from the ventricles, and it requires immediate intervention due to the risk of deteriorating into ventricular fibrillation (VF) and cardiac arrest. Therefore, elective cardioversion is not appropriate for treating VT.

B. Defibrillation involves the unsynchronized delivery of a high-energy electrical shock to the heart to terminate life-threatening arrhythmias, such as ventricular fibrillation (VF) or pulseless ventricular tachycardia (VT). In the case of a conscious patient with pulse-sustaining ventricular tachycardia, immediate defibrillation may not be necessary. However, if the patient deteriorates into pulseless VT or VF, prompt defibrillation is required to restore normal cardiac rhythm and circulation.

C. Radiofrequency catheter ablation is a procedure performed in a cardiac catheterization lab to treat certain cardiac arrhythmias by delivering radiofrequency energy to the specific area of the heart responsible for the abnormal rhythm. While radiofrequency catheter ablation may be considered for certain types of sustained ventricular tachycardia that are refractory to medical therapy or deemed to be originating from a specific site in the heart, it is not the immediate intervention for hemodynamically unstable ventricular tachycardia.

D. CPR is an emergency procedure performed on individuals experiencing cardiac arrest or a life- threatening medical emergency. In the case of ventricular tachycardia (VT) with a pulse, the patient is still perfusing, and CPR is not indicated. However, if the patient deteriorates into pulseless VT or ventricular fibrillation (VF), CPR may be initiated along with immediate defibrillation.

A. The rapid response team will begin with defibrillation and then progress to cardiopulmonary resuscitation if needed B. It would be best if you waited outside, as you won't want to see cardiopulmonary resuscitation performed on your loved one C. As long as the team is doing cardiopulmonary resuscitation, your loved on has a normal blood flow throughout their body D. The rapid response team cannot defibrillate your loved on because they are in systole; they are continuing cardiopulmonary resuscitation.

Correct Answer is D

Explanation

D. Asystole represents the absence of electrical activity in the heart and is not amenable to defibrillation. Therefore, the RRT would continue cardiopulmonary resuscitation (CPR) with chest compressions and may administer medications or other interventions as indicated. This statement provides accurate information to the family about the patient's condition and the actions being taken by the RRT.

A. Defibrillation is not indicated for asystole. Asystole represents a flatline on the cardiac monitor, indicating the absence of electrical activity in the heart. Defibrillation is only effective for certain types of cardiac rhythms, such as ventricular fibrillation or pulseless ventricular tachycardia. Therefore, the RRT would not use defibrillation for a patient in asystole.

B. It does not provide the family with information about the patient's condition or the actions being taken by the RRT. Moreover, excluding the family from the patient's care may cause additional distress and prevent them from being present to support their loved one during a critical situation.

C. Cardiopulmonary resuscitation (CPR) is performed to maintain blood flow and oxygenation to vital organs during cardiac arrest. However, it does not restore normal blood flow or circulation. The goal of CPR is to provide temporary support until advanced interventions can be initiated or until return of spontaneous circulation (ROSC) is achieved.

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Which statement by the nurse when explaining the purpose of positive end-expiratory pressure (PEEP) to the patient's caregiver is accurate?

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Naxlex Comprehensive Predictor Exams

A nurse is caring for a client who reports heart palpitations. An ECG confirms the client is experiencing ventricular tachycardia (VT). The nurse should anticipate the need for taking which of the following actions?

Correct Answer is A

Explanation

The rapid response team (RRT) is caring for a client with asystole. Which nursing statement made to the client's family about the actions of the RRT is appropriate?

Correct Answer is D

Explanation

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