What triggers the afferent pathways, resulting in the sensation of pain?
Spinal cord
Nociceptors
Endorphins
Cortex
The Correct Answer is B
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale:
Avoiding crossing legs at the knees is a correct practice for people with PVD. It helps to prevent constriction of blood flow in the legs. When legs are crossed, pressure is applied to the veins in the lower leg, which can impede blood flow. This can lead to several problems, including:
Increased risk of blood clots Worsening of swelling in the legs Increased pain and discomfort Potential skin damage
Reinforcing this practice with the client is important.
Choice B rationale:
Not going barefoot is also a correct practice for people with PVD. It helps to protect the feet from injuries and infections. People with PVD may have reduced sensation in their feet, making them more susceptible to injuries they may not notice. Additionally, PVD can impair wound healing, so even minor injuries can become serious problems.
Reinforcing this practice with the client is important.
Choice C rationale:
Using a thermometer to check bath water temperature is not directly relevant to PVD management. While it's generally a good safety practice to avoid excessively hot water, which can burn the skin, it's not specifically related to the blood flow issues associated with PVD.
This statement indicates a need for further teaching to focus on PVD-specific self-care measures.
Choice D rationale:
Wearing stockings with elastic tops is generally recommended for people with PVD. These stockings, often referred to as compression stockings, help to improve blood flow in the legs by applying gentle pressure. This can help to reduce swelling, pain, and the risk of blood clots.
Reinforcing this practice with the client is important.
Correct Answer is D
Explanation
NPO status (nothing by mouth) is not a relevant intervention in this situation. It would be indicated for a patient with gastrointestinal issues or prior to a procedure, but it does not address the potential consequences of rapid fluid administration.
Restricting oral intake would not reverse or mitigate the effects of fluid overload that may have already occurred.
It's important to prioritize assessment of the patient's respiratory status, as fluid overload can lead to pulmonary edema, a serious complication.
Rationale for Choice B:
Elevating the head of the bed to high Fowler's position can be helpful in easing breathing for patients with respiratory distress, but it's not the most immediate priority in this case.
Assessing the patient's respiratory status directly through respiratory rate and lung sounds will provide more comprehensive information about potential fluid overload and guide further interventions.
Rationale for Choice C:
Measuring the client's temperature is not directly relevant to the concern of rapid fluid administration.
While fever could be a sign of infection, which might warrant fluid administration, it's not the primary concern in this scenario.
The priority is to assess for potential fluid overload, which could manifest as respiratory distress. Rationale for Choice D:
Checking the client's respiratory rate and lung sounds is the most appropriate action for the nurse to take in this situation.
Rapid infusion of 900 mL of fluid within a short period could lead to fluid overload, which can manifest as: Increased respiratory rate
Crackles in the lungs Shortness of breath Hypoxia
Early identification of these signs is crucial for prompt intervention and prevention of serious complications.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today