A client with a medical diagnosis of acute respiratory distress syndrome (ARDS) is being placed in the prone position. The nurse explains to family members that, "This will help improve ventilation by:
allowing undamaged areas in the lower part of the lungs to be ventilated."
relieving pressure on the diaphragm and allowing expansion."
decreasing pressure to the back of the rib cage."
snifting fluid into the back area of the lungs.'
The Correct Answer is A
A. Allowing undamaged areas in the lower part of the lungs to be ventilated: The prone position is commonly used in patients with acute respiratory distress syndrome (ARDS) to improve oxygenation and ventilation. In ARDS, the lung tissue is often damaged, particularly in the dorsal (back) regions of the lungs, due to gravity and ventilation-perfusion mismatch. By placing the patient in the prone position, gravity helps redistribute the blood flow and improve ventilation to the posterior (lower) parts of the lungs, which are typically under-ventilated in the supine position. This positioning allows healthier or less-damaged areas of the lungs to receive better airflow, improving overall oxygenation.
B. Relieving pressure on the diaphragm and allowing expansion: While the prone position does shift pressure away from certain areas, its primary benefit is not related to relieving pressure on the diaphragm. The diaphragm, while somewhat affected by body position, is not the key structure being targeted for ventilation improvement. The main goal of prone positioning is to improve lung aeration in areas affected by ARDS, not directly to relieve diaphragm pressure.
C. Decreasing pressure to the back of the rib cage: The prone position does not specifically target reducing pressure to the back of the rib cage. Although it changes how pressure is distributed across the body, the main goal is to facilitate better ventilation and perfusion to the posterior lung regions, not necessarily to reduce pressure on the rib cage itself.
D. Sniffing fluid into the back area of the lungs: This option is unclear and not accurate. The prone position does not "sniff" fluid into the lungs; rather, it helps to redistribute fluid and improve the ventilation of the lung areas that are less affected by edema or inflammation in ARDS. The goal is to improve the ventilation/perfusion ratio and prevent further collapse of lung tissue.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Similar to the angina attacks you had in the past:
This response is not entirely accurate. Angina refers to chest pain that occurs when the heart's demand for oxygen exceeds its supply, usually due to partial blockage of the coronary arteries. NSTEMI (non-ST elevation myocardial infarction) is different from angina in that it involves actual heart muscle injury or damage due to partial or intermittent blockage of a coronary artery, whereas angina does not cause permanent heart muscle damage. Therefore, describing NSTEMI as similar to past angina attacks would be misleading.
B. A condition characterized by coronary arteries vasodilating:
This is incorrect. NSTEMI occurs due to a partial blockage or narrowing of the coronary arteries, usually caused by a blood clot that forms around a ruptured atherosclerotic plaque. The blockage restricts blood flow to the heart muscle, causing injury or infarction. Vasodilation (the widening of blood vessels) is not a characteristic of NSTEMI; in fact, it is the constriction or blockage of the coronary arteries that leads to this type of heart attack.
C. A term used to describe an irregular heartbeat:
This is incorrect. NSTEMI is not related to an irregular heartbeat or arrhythmia directly. While arrhythmias (irregular heartbeats) can occur as a result of a heart attack, NSTEMI specifically refers to a type of heart attack that is not accompanied by the characteristic ST-segment elevation seen on an electrocardiogram (ECG) in a STEMI (ST-elevation myocardial infarction). It indicates a partial blockage of a coronary artery and is generally less severe than STEMI.
D. Is a less severe type of heart attack compared to STEMI:
This is the most accurate response. NSTEMI is a type of heart attack that is often considered less severe than STEMI, but still involves heart muscle injury. The difference between NSTEMI and STEMI lies in the ECG findings: STEMI involves a full-thickness myocardial infarction with a significant blockage of the artery, as indicated by ST-segment elevation on an ECG. In NSTEMI, there is a partial blockage or temporary decrease in blood flow, and the ST-segment does not elevate on the ECG, but biomarkers (like troponin) are elevated, indicating heart muscle damage. NSTEMI is often less severe in terms of the extent of damage compared to STEMI, but it still requires urgent treatment to prevent further complications.
Correct Answer is D
Explanation
A. Notify the healthcare provider: While notifying the healthcare provider may eventually be necessary, the first priority is to ensure the client's airway is protected and they are receiving adequate ventilation. The provider can be notified after immediate interventions have been made to stabilize the patient.
B. Insert an oral airway to prevent the client from biting the tube: Inserting an oral airway may be necessary if the client is biting the endotracheal tube, but this is unlikely the first action needed in response to a low-pressure alarm. If the client is not biting the tube, this action will not address the potential causes of the low-pressure alarm, such as a disconnection, leak, or circuit issue.
C. Suction the client and reset the alarm: While suctioning is an important intervention if secretions are the cause of ventilation issues, it is not the first action when the source of the low-pressure alarm is unclear. If a disconnection or leak is the issue, suctioning will not resolve the problem, and the nurse risks delaying appropriate action to address the source of the alarm. The priority is ensuring the client’s ventilation is not compromised, which is best accomplished by using a manual resuscitation bag until the problem is identified and corrected.
D. Disconnect the client from the ventilator and use a manual resuscitation bag: If the source of the low-pressure alarm cannot be identified after checking the client and the ventilator, the first priority is to ensure that the client continues to receive adequate ventilation. Disconnecting the client from the ventilator and using a manual resuscitation bag (Ambu bag) allows for immediate support of the patient's ventilation while the nurse investigates the cause of the alarm. This ensures the client's oxygenation and ventilation needs are met until the problem is resolved. It is critical to address any potential loss of positive pressure or leaks in the ventilator system promptly to avoid respiratory distress or failure.
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