Which of the following symptoms might indicate that the patient is now experiencing a thyrotoxic crisis following the diagnosis of Graves' disease?

Decreased respirations and CO2 retention

Seizures and extreme tachycardia

Constipation and a swollen abdomen

Hypotension and bradycardia

Answer and Explanation

The Correct Answer is B

A. Decreased respirations and CO2 retention: A thyrotoxic crisis (thyroid storm) typically involves increased, not decreased, respiratory rates and CO2 retention due to increased metabolic activity.

B. Seizures and extreme tachycardia: Thyrotoxic crisis is characterized by severe symptoms including extreme tachycardia, fever, and potentially seizures due to excessive thyroid hormone levels.

C. Constipation and a swollen abdomen: Constipation and abdominal swelling are more typical of hypothyroidism rather than a thyrotoxic crisis.

D. Hypotension and bradycardia: Thyrotoxic crisis usually causes tachycardia and hypertension rather than bradycardia and hypotension.

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Correct Answer is D

Explanation

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.

A. An increased serum calcitonin level. B. An increased number of osteocytes. C. Elevated plasma magnesium levels. D. An increased parathyroid hormone (PTH) level.

Correct Answer is D

Explanation

A. An increased serum calcitonin level: Calcitonin is involved in lowering blood calcium levels, so increased levels would not indicate hypercalcemia but rather a compensatory mechanism to lower calcium.

B. An increased number of osteocytes: Osteocytes are bone cells, and their number is not a direct indicator of hypercalcemia. Osteoclasts and osteoblasts are more relevant to bone metabolism.

C. Elevated plasma magnesium levels: Elevated magnesium levels are not specifically indicative of hypercalcemia and can be related to other conditions.

D. An increased parathyroid hormone (PTH) level: Hypercalcemia can be associated with increased PTH levels, particularly in primary hyperparathyroidism. Elevated PTH can lead to increased calcium release from bones.

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Which of the following symptoms might indicate that the patient is now experiencing a thyrotoxic crisis following the diagnosis of Graves' disease?

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