A nurse is assessing a client’s cranial nerves. What cranial nerve would be assessed when checking a client’s gag reflex?
CN IX
CN V
CN X
CN XII
The Correct Answer is A
Choice A reason: The glossopharyngeal nerve (CN IX) is primarily responsible for the gag reflex. It provides sensory input from the pharynx and posterior third of the tongue, which triggers the gag reflex when stimulated. This nerve plays a crucial role in swallowing and the reflexive action to prevent choking.
Choice B reason: The trigeminal nerve (CN V) is responsible for facial sensation and motor functions such as biting and chewing. It does not play a direct role in the gag reflex. While it is important for other sensory and motor functions, it is not involved in the reflex being assessed here.
Choice C reason: The vagus nerve (CN X) also contributes to the gag reflex by providing motor innervation to the muscles of the pharynx and larynx. However, the primary sensory input for the gag reflex comes from the glossopharyngeal nerve (CN IX). The vagus nerve works in conjunction with CN IX to complete the reflex action.
Choice D reason: The hypoglossal nerve (CN XII) controls the movements of the tongue. It is essential for speech and swallowing but does not have a role in the gag reflex. The hypoglossal nerve’s primary function is motor control of the tongue muscles.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A Reason:
The client has full range of motion in her wrist does not necessarily indicate a need to loosen the restraints. Full range of motion suggests that the restraints are not too tight and are allowing for some movement. However, it is important to regularly assess the client’s circulation, skin integrity, and comfort to ensure the restraints are not causing harm.
Choice B Reason:
The client is attempting to remove the restraint is a common behavior in clients who are restrained, especially if they are confused or agitated. While this behavior warrants close monitoring and possibly re-evaluating the need for restraints, it does not necessarily indicate that the restraints need to be loosened. The nurse should assess the client’s overall condition and consider alternative methods to ensure safety.
Choice C Reason:
The client has cyanotic digits is a critical finding that indicates impaired circulation. Cyanosis, or a bluish discoloration of the skin, occurs when there is a lack of oxygen in the blood. This can be a sign that the restraints are too tight and are restricting blood flow to the extremities. In this case, the nurse should immediately loosen the restraints to restore proper circulation and prevent further complications.
Choice D Reason:
The client denies discomfort is a positive finding, indicating that the client is not experiencing pain or distress from the restraints. However, the absence of discomfort does not rule out other potential issues such as impaired circulation or skin breakdown. Regular assessments are necessary to ensure the restraints are being used safely and effectively.
Correct Answer is A
Explanation
Choice A reason: Positioning the collection device below the level of the chest is crucial to ensure proper drainage of air or fluid from the pleural space. This positioning uses gravity to facilitate drainage and prevent backflow into the pleural cavity, which could lead to complications such as pneumothorax or pleural effusion. The collection device should always be kept below the chest level to maintain effective drainage.
Choice B reason: Clamping the chest tube is generally not recommended unless specifically ordered by a physician or during certain procedures. Clamping can lead to a buildup of air or fluid in the pleural space, increasing the risk of tension pneumothorax. It is essential to keep the chest tube unclamped to allow continuous drainage and prevent complications.
Choice C reason: Applying an occlusive dressing over the chest tube site is necessary to prevent air from entering the pleural space and to secure the tube. However, this is not the primary action related to the positioning of the collection device. The occlusive dressing helps maintain the integrity of the chest tube insertion site and prevents infection.
Choice D reason: Emptying the chest tube collection chamber every shift is not a standard practice. The collection chamber should be monitored and emptied as needed based on the volume of drainage and the specific protocols of the healthcare facility. Regular monitoring is essential, but unnecessary emptying can disrupt the closed system and increase the risk of infection.
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