Which action should the nurse take first when the low pressure alarm sounds for a patient who has an arterial line in the left radial artery?

Re-zero the monitoring equipment.

Check the left hand for pallor.

Fast flush the arterial line.

Assess for dysrhythmias

Answer and Explanation

The Correct Answer is B

B. Checking the left hand for pallor can help assess peripheral perfusion and determine if there is adequate blood flow distal to the arterial line insertion site. Pallor in the left hand could indicate decreased perfusion, which may contribute to the low-pressure alarm.

A. Re-zeroing the monitoring equipment may be necessary to ensure accurate pressure readings. However, it should not be the first action taken when the low-pressure alarm sounds. Before re-zeroing, the nurse should assess the patient's condition to ensure there are no immediate issues affecting arterial pressure.

C. Fast flushing the arterial line is not typically the first action to take when the low-pressure alarm sounds. Fast flushing may increase the risk of dislodging the catheter or causing air embolism if there is a problem with the line.

D. Assessing for dysrhythmias should be part of the overall assessment but may not be the first action taken in response to the alarm.

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Correct Answer is A

Explanation

A. The insertion of a pulmonary artery catheter can help in assessing hemodynamic parameters and distinguishing between these two conditions. It provides direct measurement of pulmonary artery pressures, which can be elevated in the case of heart failure.

B. A ventilation-perfusion (V/Q) scan is used to evaluate ventilation and perfusion in the lungs. While it can help identify areas of ventilation-perfusion mismatch, it may not be the most appropriate initial test for distinguishing between ARDS and pulmonary edema.

C. Drawing blood for arterial blood gases is also a critical step as it helps in assessing the severity of hypoxemia and respiratory failure.

D. A chest x-ray can show the presence of bilateral opacities, which are indicative of ARDS when cardiac failure or fluid overload is not the primary cause. However, transthoracic echocardiography (TTE) is often performed to seek evidence of cardiac dysfunction when cardiogenic pulmonary edema cannot be excluded by clinical evaluation, laboratory findings, or imaging.

A. The patient has no cough reflex when suctioned. B. The patient's oxygen saturation is 90% to 93% C. The patient does not respond to voice. D. No sedative is ordered for the patient

Correct Answer is D

Explanation

D Sedatives are typically administered alongside neuromuscular blockers to ensure the patient's comfort and prevent awareness during mechanical ventilation.

A The absence of a cough reflex when suctioned is expected in a patient receiving cisatracurium (Nimbex) because it is a neuromuscular blocking agent that induces paralysis. Cisatracurium inhibits skeletal muscle movement, including the muscles involved in coughing.

B An oxygen saturation between 90% to 93% is within an acceptable range for a patient in this condition.

C The lack of response to voice may indicate that the patient is sedated or experiencing effects from the neuromuscular blocking agent. However, since the patient is receiving cisatracurium to prevent asynchronous breathing with the positive pressure ventilator, it's expected that the patient will not respond to voice due to the medication-induced paralysis.

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Which action should the nurse take first when the low pressure alarm sounds for a patient who has an arterial line in the left radial artery?

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Naxlex Comprehensive Predictor Exams

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Explanation

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Correct Answer is D

Explanation

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