An adult who fell 20 feet (6 meters) from a tree is admitted to the intermediate intensive care unit with a fractured femur. When the cardiac monitor alarms, the nurse finds the client has no palpable carotid pulse and no spontaneous respiration, however, the cardiac monitor displays a sinus rhythm. Which intervention should the nurse implement?
View the rhythm in another chest lead.
Begin chest compressions at a rate of 120 times a minute.
Auscultate all chest fields for muffled lung sounds.
Observe for swelling at the fracture site.
The Correct Answer is B
A. View the rhythm in another chest lead. While verifying the rhythm in another lead may help confirm the accuracy of the monitor, it does not address the immediate absence of a pulse and respirations. The client is in pulseless electrical activity (PEA), which requires immediate intervention rather than rhythm verification.
B. Begin chest compressions at a rate of 120 times a minute. The client has no palpable carotid pulse and no spontaneous respirations despite a sinus rhythm on the monitor, indicating pulseless electrical activity (PEA). PEA is a form of cardiac arrest where the heart shows electrical activity but fails to generate effective circulation. Immediate high-quality chest compressions are essential to maintain perfusion while addressing the underlying cause, such as hypovolemia or tension pneumothorax.
C. Auscultate all chest fields for muffled lung sounds. While assessing for muffled lung sounds may help detect conditions such as tension pneumothorax or hemothorax, it should not delay the initiation of CPR. Once compressions are started, the underlying cause of PEA can be investigated.
D. Observe for swelling at the fracture site. Swelling at the fracture site may indicate bleeding or compartment syndrome, but assessing the fracture should not take priority over initiating CPR. If hemorrhage is suspected as a cause of PEA, rapid fluid resuscitation should be initiated after starting chest compressions.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Expel the excess air and heparin from the syringe. While removing excess air prevents gas exchange alterations, this is not the priority when obtaining an SVO₂ sample. Excess heparin could dilute the sample, but proper blood volume collection is the first concern.
B. Place sample in arterial blood gas syringe. SVO₂ measures venous oxygen saturation, which is different from arterial blood gases (ABGs). Using an ABG syringe is incorrect because it is heparinized for arterial sampling, and arterial blood does not reflect mixed venous oxygenation.
C. Obtain a minimum of 1 mL of blood. SVO₂ is measured from the distal lumen of a pulmonary artery (PA) catheter to assess oxygen delivery and consumption. At least 1 mL of blood is required for an accurate reading, ensuring sufficient sample volume for laboratory analysis.
D. Aspirate the blood sample slowly. While slow aspiration can help prevent hemolysis, it is not the primary concern when collecting an SVO₂ sample. The priority is obtaining a sufficient volume (≥1 mL) for an accurate measurement.
Correct Answer is A
Explanation
A. Administer a PRN bolus normal saline. The client is exhibiting signs of hypovolemic shock, including tachycardia (HR 110 bpm), tachypnea (RR 24), and hypotension (BP 80/50 mmHg) following massive gastrointestinal bleeding and multiple blood transfusions. Immediate fluid resuscitation with a normal saline bolus is the priority to restore intravascular volume, maintain perfusion, and prevent further deterioration.
B. Obtain a blood specimen for hematocrit. While monitoring hematocrit is important to assess ongoing blood loss, it does not take priority over treating the client’s current hypovolemia. A delay in resuscitation could worsen hypotension, decrease organ perfusion, and lead to shock.
C. Measure strict hourly urinary output. Monitoring urine output is important in assessing renal perfusion and fluid balance, but the client’s immediate need is volume replacement. If fluid resuscitation is delayed, renal perfusion could worsen, leading to acute kidney injury.
D. Switch oxygen delivery to a face mask. The client’s oxygen saturation is 94% on 4 L/min nasal cannula, indicating adequate oxygenation at this time. Increasing oxygen delivery is not immediately necessary compared to fluid resuscitation. However, if the client’s condition worsens, oxygen therapy adjustments may be needed.
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