In a post-surgical unit, the nurse cares for many patients experiencing pain. Which situation is likely to lower a patient’s pain threshold?

A patient who is awaiting biopsy results.

A patient who is anxious.

A patient who is having difficulty sleeping in the hospital setting.

It is the same for all patients who have had surgery.

Answer and Explanation

The Correct Answer is B

Choice A rationale:

Awaiting biopsy results can certainly cause anxiety and stress, but it doesn't directly impact the physiological mechanisms that modulate pain perception.

While a patient awaiting biopsy results may be more attentive to their bodily sensations, including pain, the anxiety itself is not the primary driver of a lowered pain threshold.

It's important to address the patient's concerns and provide emotional support, but this alone may not be sufficient to manage pain effectively if anxiety is not the primary factor.

Choice B rationale:

Anxiety activates the sympathetic nervous system, which triggers the "fight-or-flight" response. This cascade of physiological changes includes:

Increased heart rate and blood pressure Muscle tension

Dilated pupils

Heightened awareness of bodily sensations

These physiological changes can amplify pain signals and lower the pain threshold, meaning that a person who is anxious may perceive pain more intensely than someone who is calm and relaxed.

This is because anxiety can reduce the effectiveness of the body's natural pain-inhibiting mechanisms, such as the release of endorphins and serotonin.

Choice C rationale:

Difficulty sleeping can also contribute to pain, but its effect on pain threshold is less direct than that of anxiety. Sleep deprivation can lead to:

Increased irritability Decreased pain tolerance Impaired cognitive function

These factors can make it more difficult to cope with pain, but they don't directly lower the threshold at which pain signals are perceived.

Choice D rationale:

Pain threshold varies among individuals due to a variety of factors, including: Genetics

Past experiences with pain Psychological factors Cultural beliefs

Coping mechanisms

It is incorrect to assume that all patients who have had surgery will have the same pain threshold.

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Correct Answer is B

Explanation

Choice A rationale:

Metabolic alkalosis is characterized by a high pH (above 7.45), high bicarbonate (HCO3-) levels, and normal or low PaCO2. The patient's ABGs show a low pH (7.26), low bicarbonate (14 mEq/L), and low PaCO2 (30 mm Hg), which are not consistent with metabolic alkalosis.

Choice C rationale:

Respiratory alkalosis is characterized by a high pH (above 7.45), low PaCO2, and normal or slightly elevated bicarbonate levels. The patient's ABGs do show a low PaCO2, but the pH is low (acidic) and the bicarbonate is low, which are not consistent with respiratory alkalosis.

Choice D rationale:

Respiratory acidosis is characterized by a low pH (below 7.35), high PaCO2, and normal or slightly elevated bicarbonate levels. The patient's ABGs do show a low pH, but the PaCO2 is also low, which is not consistent with respiratory acidosis.

Rationale for the correct answer, B:

Metabolic acidosis is characterized by a low pH (below 7.35), low bicarbonate levels, and normal or low PaCO2. The patient's ABGs are consistent with metabolic acidosis because they show a low pH (7.26), low bicarbonate (14 mEq/L), and low PaCO2 (30 mm Hg).

Acute kidney injury is a common cause of metabolic acidosis. The kidneys play a vital role in regulating acid-base balance by excreting acids and reabsorbing bicarbonate. When the kidneys are damaged, they are unable to excrete acids effectively, leading to an accumulation of acids in the blood and a decrease in bicarbonate levels.

Additional Information:

It's important to note that the patient's low PaCO2 is likely a compensatory mechanism for the metabolic acidosis. In response to acidosis, the respiratory system tries to increase ventilation to blow off more carbon dioxide, which helps to raise the pH. However, this compensatory mechanism is often not enough to fully correct the acidosis.

A. Check the client’s vital signs. B. Inform the client about the need to return to surgery. C. Have the client lie supine with knees flexed. D. Cover the client’s wound with a moist, sterile dressing.

Correct Answer is D

Explanation

The correct answer is Choice D: Cover the client's wound with a moist, sterile dressing.

Choice D rationale: In the case of a client with a bowel protrusion from an abdominal incision, the immediate priority is to protect the exposed bowel and minimize the risk of further damage or infection. Covering the wound with a moist, sterile dressing serves to maintain tissue viability, prevent dehydration, and provide a protective barrier against contamination. This intervention preserves the integrity of the exposed bowel while awaiting further medical or surgical management.

Choice A rationale: Checking the client's vital signs is an essential aspect of postoperative care and may be indicative of the client's overall status, but it is not the first action in the case of bowel evisceration. Immediate attention should be directed towards protecting the exposed bowel, with vital signs being monitored closely thereafter to ensure the client's stability.

Choice B rationale: Informing the client about the need for a return to surgery is an important step in the client's care, as it allows for informed consent and understanding of the situation. However, in this scenario, the priority is to address the immediate issue of bowel exposure and provide initial care to the compromised tissue. Once the exposed bowel is appropriately managed, the client should be informed about the potential need for further surgical intervention.

Choice C rationale: Positioning the client in a supine position with knees flexed may help reduce abdominal tension and minimize further protrusion, but it is not the immediate action to take when faced with bowel evisceration. The initial focus should be on protecting the exposed bowel through the application of a moist, sterile dressing, followed by measures to optimize the client's position and promote tissue integrity.

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In a post-surgical unit, the nurse cares for many patients experiencing pain. Which situation is likely to lower a patient’s pain threshold?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is caring for a patient who has acute kidney injury.The patient’s ABGs are: pH: 7.26, PaCO2: 30 mm Hg, HCO3: 14 mEq/L. Which of the following acid-base imbalances should the nurse identify the patient is experiencing?

Correct Answer is B

Explanation

A nurse notes a small section of bowel protruding from the abdominal incision of a client who is postoperative. After calling for assistance, which of the following actions should the nurse take first?

Correct Answer is D

Explanation

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