Which assessment findings are expected in a patient experiencing a left hemispheric brain attack?

Hemiparesis of the left arm and leg with nystagmus.

Eyelid and mouth drooping on the ipsilateral side.

Homonymous hemianopia of the left visual field of both eyes.

Hemiparesis of the right arm and leg with aphasia

Answer and Explanation

The Correct Answer is D

A. Hemiparesis of the left arm and leg with nystagmus: A left hemispheric stroke typically affects the right side of the body.

B. Eyelid and mouth drooping on the ipsilateral side: Facial drooping due to a stroke typically occurs on the contralateral side of the body.

C. Homonymous hemianopia of the left visual field of both eyes: A left hemispheric stroke typically causes right-sided homonymous hemianopia.

D. Hemiparesis of the right arm and leg with aphasia: A left hemispheric stroke often results in right-sided hemiparesis and can affect language centers, leading to aphasia.

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Correct Answer is C

Explanation

A. A sudden, explosive, disorderly charge of neurons causes a transient aberration in brain function: This describes the pathophysiology of seizures, not myasthenia gravis.

B. Loss of the myelin sheath surrounding peripheral nerves causes asymmetric weakness: This describes multiple sclerosis, not myasthenia gravis.

C. Destruction of acetylcholine receptors causes muscle weakness with prolonged activity: Myasthenia gravis is an autoimmune disease where antibodies attack acetylcholine receptors at the neuromuscular junction, leading to muscle weakness, especially after repeated use.

D. A bacterial inflammatory illness that causes headache and photophobia: This describes meningitis, not myasthenia gravis.

A. Ischemia of the brain tissue is causing cellular injury, swelling and malfunction of the contralateral side B. The functioning of the right cranial nerve controlling facial movement is compromised by cerebral edema C. The sensorimotor tracts leading from the brain to the body decussate and control the arm and leg on the same side as the lesion, D. The corticospinal tracts leading from the brain to the body decussate and control the ipsilateral arm and leg.

Correct Answer is A

Explanation

A. Ischemia of the brain tissue is causing cellular injury, swelling, and malfunction of the contralateral side: Hemiparesis occurs on the side opposite to the brain lesion due to the crossing (decussation) of motor pathways.

B. The functioning of the right cranial nerve controlling facial movement is compromised by cerebral edema: While facial nerve involvement can cause drooping, the hemiparesis suggests a central (brain) rather than peripheral issue.

C. The sensorimotor tracts leading from the brain to the body decussate and control the arm and leg on the same side as the lesion: This is incorrect because the tracts control the contralateral side of the body.

D. The corticospinal tracts leading from the brain to the body decussate and control the ipsilateral arm and leg: This is incorrect; the corticospinal tracts control the contralateral side.

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Which assessment findings are expected in a patient experiencing a left hemispheric brain attack?

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Correct Answer is C

Explanation

Correct Answer is A

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