In the Neuro ICU, a comatose patient has this posture in bed: Upper arms are flexed tight to the sides with elbows, wrists, and fingers flexed. The legs are extended and internally rotated. The nurse interprets this posture as:
Decorticate Rigidity
Flaccid
Decerebrate Rigidity
Hemiplegia
The Correct Answer is A
A. Decorticate rigidity is characterized by flexion of the arms and extension of the legs. In this posture, the upper arms are flexed and held tightly to the sides, with the elbows, wrists, and fingers also flexed. The legs are extended and internally rotated.
B. Flaccid posture, or flaccidity, is characterized by a complete lack of muscle tone, which leads to a limp and lifeless appearance. There is no resistance to passive movement, and the muscles are weak or paralyzed.
C. Decerebrate rigidity is characterized by extension of both the arms and the legs. In this posture, the arms are extended at the sides with the wrists and fingers flexed, and the legs are extended and internally rotated. This type of rigidity indicates damage to the brainstem below the red nucleus.
D. Hemiplegia refers to paralysis of one side of the body, which can result from brain injury or stroke affecting one hemisphere of the brain. The affected side will have limited or no movement and muscle tone.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. The obturator sign is used to assess for appendicitis, not meningitis. To perform this test, the patient’s right knee is flexed to 90 degrees, and the nurse rotates the hip internally and externally. Pain during this maneuver can indicate irritation of the obturator muscle, which is associated with inflammation of the appendix.
B. The Brudzinski sign is a clinical test used to assess meningeal irritation. When the patient’s neck is passively flexed while lying supine, a positive Brudzinski sign is indicated if the patient involuntarily flexes their knees and hips in response to neck pain. This sign is often seen in meningitis as a result of irritation of the meninges.
C. The Phalen sign is used to diagnose carpal tunnel syndrome. The patient flexes their wrists and holds the position for a period of time to see if symptoms of numbness or tingling appear in the fingers, which would indicate median nerve compression at the wrist. This sign is unrelated to meningitis.
D. The Tinel sign is also used to diagnose carpal tunnel syndrome and other peripheral nerve issues. It involves tapping on the nerve (such as the median nerve at the wrist) to see if it causes tingling or a “pins and needles” sensation along the nerve’s distribution. Like the Phalen sign, it is not related to meningitis.
Correct Answer is B
Explanation
A. Extinction refers to the phenomenon where a person fails to recognize a stimulus on one side of the body when another stimulus is presented simultaneously on the opposite side. This is often tested in cases of neurological impairment, particularly in the context of sensory neglect or loss
B. Stereognosis is the ability to identify an object by touch and proprioception without visual input. It involves recognizing the shape, size, and texture of an object solely through tactile information. Placing a coin in the patient’s hand and asking them to identify it with their eyes closed tests their ability to use tactile information to recognize objects, making stereognosis the correct term for this assessment.
C. Proprioception is the sense of the position and movement of the body and its parts. It involves awareness of body position in space, which is crucial for coordination and balance. While important, proprioception does not specifically involve identifying objects by touch alone; it is more about the awareness of body position.
D. Two-point discrimination is the ability to distinguish between two closely spaced points of contact on the skin. It tests the sensitivity of the skin to touch and is often used to assess sensory nerve function. It does not involve identifying objects by touch but rather measuring how well one can discern between two separate points of contact.
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