What is decerebrate posturing?
Extension and rigidity of the arms and legs, indicating an insult to the midbrain or pons
tonic-clonic seizure indicating an injury to the frontal cortex
Involuntary twisting and repetitive movements
Uncontrolled jerking movements of the limbs and finger rolling
The Correct Answer is A
A. Decerebrate posturing is characterized by extension and rigidity of the arms and legs, typically indicating damage to the midbrain or pons. It reflects severe brain injury.
B. Tonic-clonic seizures involve rhythmic muscle contractions but are not posturing.
C. Involuntary twisting and repetitive movements describe dystonia or chorea, not decerebrate posturing.
D. Uncontrolled jerking movements describe myoclonus or seizures, not decerebrate posturing.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. The ventricles work simultaneously, not alternately, and both failing leads to compromised cardiac output.
B. Biventricular heart failure involves both the left and right ventricles, not just the left.
C. An ejection fraction above 50% is considered normal; in heart failure, especially biventricular, it is often reduced.
D. Biventricular heart failure means both ventricles are impaired, often resulting in a significantly reduced ejection fraction and poor cardiac function.
Correct Answer is D
Explanation
A. The compensatory stage involves subtle changes as the brain attempts to maintain normal ICP, typically without severe symptoms like dilated pupils.
B. The refractory stage is the final stage where brain injury is irreversible and signs are severe, often including coma.
C. The initial stage usually shows minimal or no symptoms.
D. The progressive stage of increased ICP is characterized by worsening neurological signs, including vomiting, dilated pupils due to cranial nerve compression, and decreased level of consciousness. These symptoms indicate that intracranial pressure is rising and beginning to impair brain function.
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