The nurse assessing a client hospitalized with a diagnosis of hypoparathyroidism notes positive Trousseau's and Chvostek's signs. The nurse determines that these findings most indicate which electrolyte imbalance?
Hypernatremia
Hypermagnesemia
Hypocalcemia
Hypokalemia
The Correct Answer is C
Rationale:
A. Hypernatremia, an elevated sodium level, does not cause Trousseau's or Chvostek's signs.
B. Hypermagnesemia, an elevated magnesium level, is not associated with positive Trousseau's and Chvostek's signs.
C. Hypocalcemia, a low calcium level, is commonly associated with positive Trousseau's and Chvostek's signs. Trousseau's sign is a carpopedal spasm induced by inflating a blood pressure cuff, while Chvostek's sign is facial twitching in response to tapping over the facial nerve. Both are indicative of neuromuscular irritability due to low calcium levels.
D. Hypokalemia, a low potassium level, does not cause these specific signs and is associated with different clinical manifestations.
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Correct Answer is B
Explanation
Rationale:
A. During the oliguric phase of acute kidney injury, BUN and creatinine levels typically increase due to reduced kidney function, not decrease.
B. The oliguric phase is characterized by significantly reduced urine output, often defined as less than 400 mL per 24 hours, indicating severe kidney impairment.
C. The GFR does not recover during the oliguric phase; it is significantly decreased, contributing to the accumulation of waste products in the blood.
D. Renal function is not reestablished during the oliguric phase; this occurs in later stages, such as the diuretic or recovery phase.
Correct Answer is A
Explanation
Rationale:
A. Auscultating for a bruit at the site of an AV graft is the most appropriate method to assess its patency. A bruit is a sound made by turbulent blood flow, indicating that the graft is functioning.
B. Measuring blood pressure in both arms does not specifically assess the patency of the graft and could potentially harm the graft if measured in the affected arm.
C. Auscultating the antecubital fossa using a Doppler is not a standard practice for assessing AV graft patency; instead, a stethoscope is used directly over the graft site.
D. Checking the brachial and radial pulses does not assess the graft directly. Although pulse presence is important, it does not provide information about the graft’s patency.