The nurse is caring for a client who has hemorrhaged postoperatively and is in an early stage of shock. Which cardiopulmonary symptoms are most indicative of progressive hypovolemic shock?
Narrowed pulse pressure, presence of 3+ femoral pulses, apneic episodes.
Widening pulse pressure, muffled heart sounds, presence of atrial gallop.
Increased heart rate, lowered systolic reading, peripheral extremity mottling.
Irregular heart rate, elevated diastolic reading, increased respiratory rate.
The Correct Answer is C
A. Narrowed pulse pressure, presence of 3+ femoral pulses, apneic episodes. Narrowed pulse pressure is consistent with hypovolemic shock, but 3+ femoral pulses are not expected, as shock leads to weak, thready pulses due to reduced perfusion. Apneic episodes typically occur in the late stages of shock, not in the early or progressive stages.
B. Widening pulse pressure, muffled heart sounds, presence of atrial gallop. A widening pulse pressure and muffled heart sounds are more indicative of cardiac tamponade, not hypovolemic shock. Hypovolemic shock is characterized by a narrowing pulse pressure due to a drop in systolic blood pressure while diastolic pressure remains relatively stable.
C. Increased heart rate, lowered systolic reading, peripheral extremity mottling. Tachycardia is an early compensatory response to hypovolemia as the body attempts to maintain cardiac output. As shock progresses, systolic blood pressure drops due to inadequate circulating volume. Peripheral extremity mottling occurs as the body shunts blood to vital organs, reducing perfusion to the skin. These signs are characteristic of progressive hypovolemic shock.
D. Irregular heart rate, elevated diastolic reading, increased respiratory rate. An irregular heart rate is not a primary indicator of hypovolemic shock. While respiratory rate increases in response to decreased oxygen delivery, an elevated diastolic reading is uncommon, as diastolic pressure tends to stay stable or decrease slightly with ongoing hypovolemia.
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 D
Explanation
A. Measure the client's abdominal girth. While tracking abdominal distension is useful, it does not address the underlying cause of the client's deterioration. Measuring girth should not delay immediate intervention for a potentially life-threatening condition.
B. Monitor the client's recent hemoglobin levels. A drop in hemoglobin would indicate internal bleeding, but waiting for lab results could delay necessary treatment. The client is already showing signs of early shock, requiring urgent medical intervention rather than just monitoring.
C. Prepare for nasogastric tube (NGT) insertion. An NGT may be needed for bowel obstruction or paralytic ileus, but the client's worsening condition suggests a more urgent issue, such as intra-abdominal hemorrhage. Addressing the potential bleeding takes priority over decompression.
D. Notify the healthcare provider (HCP) of the client's status. The client's tachycardia, tachypnea, cool pale skin, and worsening abdominal distension suggest early shock, likely due to postoperative internal bleeding or abdominal compartment syndrome. Immediate notification of the HCP ensures rapid assessment, diagnostic testing, and potential emergency intervention to prevent further deterioration.
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