The client presents with dull, achy flank pain, and a palpable mass in the costovertebral angle.
Based on these symptoms, the nurse suspects which of the following conditions?

Choice A rationale

The pituitary hormones releasing antidiuretic hormone in response to hypothyroid signaling, resulting in extensive diuresis, is not a known complication of myxedema. Myxedema is a severe form of hypothyroidism characterized by an underactive thyroid, not an overactive pituitary gland.

Choice B rationale

Myxedema coma, a rare but life-threatening complication of myxedema, can indeed be triggered by illness or trauma, leading to an exaggeration of hypothyroid symptoms. This can include severe hypotension, seizures, and/or coma. This condition is considered a medical emergency and requires immediate treatment.

Choice C rationale

Over secretion of thyroid-stimulating hormones (TSH) leading to increased excretion of T3 and T4 with dangerous cardiac symptoms is not associated with myxedema. Instead, this scenario is more likely to occur in hyperthyroidism, a condition characterized by an overactive thyroid, not an underactive one.

Choice D rationale

The heart not allowing proper flow of fluid throughout the body due to elevated levels of circulating thyroid hormone is not a characteristic of myxedema. In myxedema, the levels of thyroid hormones are low, not high.

Choice A rationale

The oliguric phase of acute tubular necrosis is characterized by fluid excess and electrolyte imbalance.

Choice B rationale

Fever and diminishing cognition are not typically characteristics of the oliguric phase of acute tubular necrosis.

Choice C rationale

Magnesium and phosphorous loss in the urine is not typically a characteristic of the oliguric phase of acute tubular necrosis.

Choice D rationale

Sodium retention and potassium loss in the urine are not typically characteristics of the oliguric phase of acute tubular necrosis.