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.
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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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale:
The spinal cord plays a crucial role in pain transmission, but it does not initiate the afferent pathways. It receives pain signals from nociceptors and relays them to the brain for processing.
The spinal cord is also involved in pain modulation, as it can dampen or amplify pain signals depending on various factors. However, it is not the primary trigger for pain sensation. That role belongs to nociceptors.
Choice B rationale:
Nociceptors are specialized sensory receptors that detect potentially damaging stimuli, such as intense heat, pressure, or chemical irritants.
They are located throughout the body, including the skin, muscles, joints, and internal organs.
When nociceptors are activated, they generate electrical signals that travel along nerve fibers to the spinal cord and brain. This process initiates the afferent pathways, which ultimately lead to the conscious perception of pain.
Nociceptors are essential for protecting the body from harm. They alert us to potential dangers and trigger responses that help us avoid injury or further damage.
Choice C rationale:
Endorphins are natural pain-relieving substances produced by the body. They act on receptors in the brain and spinal cord to reduce pain perception.
However, endorphins do not trigger the afferent pathways. They work by modulating pain signals that have already been initiated by nociceptors.
Choice D rationale:
The cortex is the outer layer of the brain that is responsible for higher-level functions, such as thinking, feeling, and decision- making.
It plays a role in the conscious experience of pain, but it does not trigger the afferent pathways.
The cortex receives pain signals from the spinal cord and processes them, leading to the awareness of pain.
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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