A nurse working in an emergency department is reviewing laboratory results of a client who is unconscious and has fruity odor to his breath. The nurse suspects diabetic ketoacidosis. Which of the following results should the nurse expect for this acid-base imbalance?
Bicarbonate 26 mEq/L
Serum pH 7.32
Creatinine 1.2 mg/dL
BUN 20 mg/dL
The Correct Answer is B
A) Bicarbonate 26 mEq/L: A bicarbonate level of 26 mEq/L is within the normal range (22-28 mEq/L) and does not indicate metabolic acidosis, which is characteristic of diabetic ketoacidosis (DKA). In DKA, bicarbonate levels are usually decreased due to buffering of the excess acids.
B) Serum pH 7.32: A serum pH of 7.32 is indicative of acidemia, which is consistent with metabolic acidosis seen in DKA. The pH is typically lower than the normal range (7.35-7.45) in DKA due to the accumulation of ketoacids.
C) Creatinine 1.2 mg/dL: A creatinine level of 1.2 mg/dL is slightly elevated but does not specifically indicate metabolic acidosis. Elevated creatinine may suggest renal impairment but is not directly linked to the acid-base disturbance seen in DKA.
D) BUN 20 mg/dL: A blood urea nitrogen (BUN) level of 20 mg/dL is elevated and may indicate dehydration or kidney dysfunction but does not specifically diagnose the acid-base imbalance associated with DKA. In DKA, bicarbonate and pH levels are more directly affected.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A) Apples:
Apples are generally considered safe for individuals with gastroesophageal reflux disease (GERD). They are low in acid and do not typically contribute to reflux symptoms, making them a suitable fruit choice.
B) Potatoes:
Potatoes are bland and non-acidic, making them a good option for individuals with GERD. They do not typically trigger reflux symptoms and can be included in a reflux-friendly diet.
C) Tomatoes:
Tomatoes are highly acidic and can significantly aggravate GERD symptoms. Their acidity can weaken the lower esophageal sphincter, allowing stomach acid to reflux into the esophagus, causing discomfort and heartburn.
D) Bananas:
Bananas are low in acid and often recommended for people with GERD. They are gentle on the stomach and do not usually cause reflux symptoms, making them a good dietary choice for managing GERD.
Correct Answer is D
Explanation
A) Bounding peripheral pulses: Metabolic acidosis typically does not cause bounding peripheral pulses. In metabolic acidosis, vasodilation might occur, but it usually leads to weaker, not bounding, pulses due to decreased cardiac output and blood pressure.
B) Hyperreflexia: Hyperreflexia is not commonly associated with metabolic acidosis. Instead, metabolic acidosis may cause symptoms like muscle weakness or fatigue due to the effect of acid-base imbalance on neuromuscular function.
C) Cool skin: While cool skin can sometimes be associated with poor perfusion in severe cases, it is not a direct manifestation of metabolic acidosis. Metabolic acidosis more commonly affects internal physiology rather than peripheral skin temperature directly.
D) Hypotension: Hypotension is a common manifestation of metabolic acidosis. The acidosis leads to vasodilation and decreased cardiac contractility, resulting in a drop in blood pressure. This is a critical sign for the nurse to monitor as it indicates the severity of the acid-base imbalance and its effect on the cardiovascular system.
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