The nurse suspects that a client has decorticate posturing.
Which findings support the nurse's suspicion?
Internal rotation and adduction of arms with flexion of elbows, wrists, and fingers.
Back hunched over and rigid flexion of all four extremities with supination of arms and plantar flexion of feet.
Supination of arms and dorsiflexion of the feet.
Arms are pronated, extended, and close to body with wrists rotated.
The Correct Answer is A
Neurological posturing indicates severe brain injury and helps localize the level of damage. Applying knowledge of motor pathway dysfunction, specifically the corticospinal tract, is necessary to distinguish between flexion and extension patterns seen in comatose patients.
Choice A rationale
Decorticate posturing results from damage to the corticospinal tract above the red nucleus. It is characterized by adduction of the arms, internal rotation, and flexion at the elbows, wrists, and fingers, while legs are extended and internally rotated.
Choice B rationale
This description does not match a standard neurological posturing pattern. Rigidity and flexion are seen in decorticate posturing, but "back hunched over" and "supination" of arms are not typical descriptors for these specific upper motor neuron indicators.
Choice C rationale
Supination of the arms is not a component of pathological posturing. Both decorticate and decerebrate posturing typically involve some form of pronation or flexion. Dorsiflexion is also not standard, as plantar flexion is commonly seen in both.
Choice D rationale
This describes decerebrate posturing, which indicates more severe damage to the brainstem or midbrain. It is characterized by rigid extension of the arms and legs, pronation of the arms, and plantar flexion of the feet with outward rotation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Intermaxillary fixation involves wiring the jaws together, creating a significant airway risk if emesis occurs. Nursing knowledge must prioritize airway patency and the prevention of aspiration by using gravity and mechanical clearing before employing irreversible measures like wire cutting.
Choice A rationale
Cutting fixation wires is a rescue action if the airway cannot be cleared by other means. It should not be the first step because it compromises the surgical repair of the mandible and requires specific tools.
Choice B rationale
Side-lying positioning uses gravity to prevent emesis from entering the trachea, while suctioning clears the oropharynx. This immediate intervention maintains airway patency and prevents aspiration pneumonia in a client whose jaws are immobilized by wires.
Choice C rationale
Notifying the provider is necessary after the client is stabilized. During an acute gagging episode, the nurse must act independently to secure the airway before spending time communicating, as delay increases the risk of fatal aspiration.
Choice D rationale
Antiemetics are used for prevention but cannot treat an active gagging and vomiting episode. Administering medication takes too long to take effect and does not address the immediate physical obstruction of the airway by emesis.
Correct Answer is A
Explanation
Patient safety protocols require the application of fall prevention strategies and environmental management. Knowledge of hospital safety standards, mobility mechanics, and the legal implications of restraints is necessary to select interventions that minimize injury risks while maintaining a safe therapeutic environment.
Choice A rationale
Keeping the bed in the lowest position minimizes the vertical distance to the floor, significantly reducing the impact force and potential for injury if a client attempts to exit the bed unassisted. This is a primary fall prevention standard.
Choice B rationale
Dim lighting during daytime hours decreases visual acuity and increases the risk of environmental trips or missteps. Adequate illumination is required for clients to identify obstacles, perceive depth accurately, and navigate their surroundings safely during active hours.
Choice C rationale
Barefoot walking increases the risk of slipping on smooth hospital floor surfaces. Safety protocols mandate non-skid footwear or socks with rubber grips to provide necessary traction and stability, preventing falls related to a lack of foot-to-floor friction.
Choice D rationale
Raising all four side rails is classified as a physical restraint in many jurisdictions and can actually increase injury severity. Clients may attempt to climb over the rails, leading to falls from a much greater height.
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