A patient arrives at the emergency center with a severe head injury. During assessment, the nurse observes that the patient is unresponsive, adducts the arms tightly against the thorax, and plantar flexes the feet while internally rotating them. How would the nurse document this abnormal posture?
Opisthotonos
Flaccid quadriplegia
Decorticate rigidity
Decerebrate rigidity
The Correct Answer is D
Choice A reason: Opisthotonos is a severe arching of the back with hyperextension of the neck and limbs due to intense muscle spasms, often linked to tetanus or severe meningitis. It does not involve the specific arm adduction and foot plantar flexion with internal rotation described. This posture is unrelated to the neurological damage indicated, as it reflects a different pathological mechanism.
Choice B reason: Flaccid quadriplegia involves complete loss of muscle tone and voluntary movement in all four limbs, typically from spinal cord injury or neuromuscular disorders. The patient’s rigid arm adduction and plantar flexion indicate active muscle contraction, not flaccidity, making this an incorrect descriptor for the observed posture.
Choice C reason: Decorticate rigidity features arm flexion, clenched fists, and extended legs, typically due to cerebral cortex or internal capsule damage above the brainstem. The patient’s arm adduction and foot plantar flexion with internal rotation do not match this pattern, as decorticate posture lacks the internal rotation component.
Choice D reason: Decerebrate rigidity is marked by arm adduction, extension, and internal rotation, with legs extended and feet plantar flexed, as observed. This results from severe brainstem injury below the midbrain, disrupting corticospinal and vestibulospinal tracts, leading to unopposed extensor activity, accurately describing the patient’s posture.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: A 15-year-old soccer player with a broken leg likely sustained the injury during sports, a common occurrence. Bruises on a 4-month-old’s arms are more concerning, as infants are non-mobile and less likely to bruise accidentally, suggesting possible abuse.
Choice B reason: Bruises on a 4-month-old’s arms are highly concerning, as infants this age are not mobile and cannot self-injure. Such bruising may indicate non-accidental trauma or abuse, requiring immediate investigation, making this the most concerning patient for possible abuse.
Choice C reason: An 8-year-old gymnast with a broken arm may have been injured during gymnastics, a plausible accident. A 4-month-old with arm bruises is more alarming, as infants are less likely to bruise without external force, so this is less concerning.
Choice D reason: A 2-year-old with knee bruises is typical from active play or falls while learning to walk. Bruises on a non-mobile 4-month-old’s arms are more suspicious for abuse, making this less concerning than the infant’s situation.
Correct Answer is A
Explanation
Choice A reason: Tenderness in the right lower quadrant on light palpation is a classic sign of appendicitis, as the appendix is located in this region. Inflammation causes localized peritoneal irritation, leading to pain, which may be accompanied by rebound tenderness or guarding, making this the correct structure.
Choice B reason: The spleen is located in the left upper quadrant, not the right lower quadrant. Tenderness in the right lower quadrant does not correspond to splenic pathology, such as splenomegaly or rupture, making this an incorrect structure for the described finding.
Choice C reason: The gallbladder is in the right upper quadrant, where tenderness might suggest cholecystitis. Right lower quadrant tenderness does not align with gallbladder pathology, as its anatomical location is distinct, making this an incorrect structure for the observed symptom.
Choice D reason: The spine is a midline structure, and tenderness in the right lower quadrant is unrelated to spinal pathology. Spinal issues typically cause back or radicular pain, not localized abdominal tenderness, making this an incorrect choice for the finding.
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