The nurse is preparing to assess the motor function of the client's trigeminal nerve. Which of the following tests would be most appropriate for the nurse to use?
Have the client smile, frown, and puff out their cheeks
Palpate the masseter muscles when the client clenches their teeth
Assess constriction of the client's pupils with direct and indirect light
Ask the patient to turn their head left and right with resistance
The Correct Answer is B
A) Have the client smile, frown, and puff out their cheeks: This test assesses the facial nerve (cranial nerve VII), not the trigeminal nerve (cranial nerve V). While important for evaluating facial movement, it does not specifically test the motor function of the trigeminal nerve, which is responsible for mastication.
B) Palpate the masseter muscles when the client clenches their teeth: This is the correct test for assessing the motor function of the trigeminal nerve. The trigeminal nerve innervates the muscles responsible for chewing, and palpating the masseter muscles during clenching allows the nurse to evaluate muscle strength and function. It provides insight into the motor capabilities associated with this cranial nerve.
C) Assess constriction of the client's pupils with direct and indirect light: This test evaluates the function of the optic nerve (cranial nerve II) and the oculomotor nerve (cranial nerve III). It does not assess the trigeminal nerve and is not relevant for this assessment.
D) Ask the patient to turn their head left and right with resistance: This action tests the spinal accessory nerve (cranial nerve XI), which is involved in neck movement. It does not relate to the function of the trigeminal nerve, making it an inappropriate choice for this specific assessment.
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Correct Answer is D
Explanation
A) Changes in peripheral vision in response to light: While peripheral vision is important in a comprehensive eye assessment, it is not specifically evaluated through the PERRLA acronym. PERRLA focuses on how the pupils respond to light and accommodation, not on peripheral vision changes.
B) Involuntary blinking in the presence of bright light: Involuntary blinking is part of a reflex action known as the blink reflex, which helps protect the eyes from bright lights and foreign objects. However, this response is not what the "A" in PERRLA refers to, which is more specifically about pupillary reactions to focus.
C) Pupillary dilation when looking at a near object: When focusing on a near object, the pupils actually constrict rather than dilate. This process, known as accommodation, is important for clear vision at close distances but does not pertain to the dilation of pupils.
D) Pupillary constriction when looking at a near object: The "A" in PERRLA stands for accommodation, which specifically refers to the pupils constricting when a person looks at a nearby object. This reaction helps the eyes focus properly and is a normal finding in a healthy neurological assessment. Thus, option D accurately describes the "A" in the PERRLA assessment.
Correct Answer is B
Explanation
A) Left extremity cool to touch, normal pitting edema, with femoral, posterior tibial, and dorsalis pedis pulses palpable, +2: While this option describes the left extremity and includes some relevant details, it inaccurately uses "normal pitting edema" without specifying the degree of edema clearly. Additionally, it lists the posterior tibial pulse instead of the popliteal, which is more appropriate given the anatomical location.
B) Left lower extremity cool to touch, +2 pitting edema, with femoral, popliteal, and dorsalis pedis pulses palpable, +2: This documentation accurately describes the left lower extremity, specifies the degree of edema as "+2," and correctly identifies the relevant pulses as femoral, popliteal, and dorsalis pedis. This terminology is clear and concise, providing a comprehensive assessment of the vascular status.
C) Left lower leg cool to touch, +4 edema with femoral, posterial tibial, dorsalis and pedis pulses normal: This option incorrectly reports the degree of edema as "+4," which indicates severe swelling, not matching the original assessment of "mild edema." It also incorrectly lists the posterior tibial pulse, which should be popliteal.
D) Left lower leg normal cool temperature, slight swelling, femoral, posterior tibial and dorsalis pedis pulses normal: The term "normal cool temperature" is confusing and not standard terminology. Additionally, "slight swelling" lacks specificity regarding the degree of edema, which is important for a clinical assessment. Furthermore, it inaccurately refers to the posterior tibial pulse instead of the popliteal.