Maria, an elementary student, was rushed to the hospital due to vomiting and a decreased level of consciousness. The patient displays slow and deep (Kussmaul breathing), and he is lethargic and irritable in response to stimulation. He appears to be dehydrated-his eyes are sunken and mucous membranes are dry-and he has a two-week history of polydipsia, polyuria, and weight loss. Measurement of arterial blood gas shows pH 7.0, Pa02 90 mm Hg. PaCO2 23 mm Hg, and HCO3 12 mmol/L; other results are Na+ 126 mmol/L. K+ 5 mmol/L, and Cl-95 mmol/L.
What is your assessment?
Respiratory Acidosis, Partially Compensated
Metabolic Acidosis, Partially, Compensated
Metabolic Alkalosis. Uncompensated
Respiratory Acidosis, Uncompensated
The Correct Answer is B
A. This option can be ruled out because the pH and PaCO2 levels indicate acidosis, but the compensation is not partial as the HCO3 is also low.
B. Maria's symptoms and the arterial blood gas values support this diagnosis. Metabolic acidosis is indicated by a low pH and a decreased bicarbonate (HCO3) level. The body attempts to compensate for this acidosis by hyperventilating, which is evidenced by her Kussmaul breathing, to decrease PaCO2. This compensation is partial because, despite the body's efforts, the pH is still significantly lower than normal.
C. This option can be ruled out because the pH is low (acidosis) rather than high (alkalosis), and the HCO3 is low rather than high.
D. Respiratory Acidosis, Uncompensated is ruled out because the pH is low (acidosis), but the PaCO2 is normal, indicating metabolic rather than respiratory involvement.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Hyponatremia is characterized by low sodium levels in the blood and is not typically associated with crackles in the lungs or elevated blood pressure.
B. While hyperkalemia is a concern in end-stage kidney disease, it is not typically associated with crackles in the lungs or elevated blood pressure.
C. Hypovolemia, or low blood volume, is not consistent with the client's reported symptoms of swelling in the lower extremities and crackles in the lungs.
D. Hypervolemia, or fluid overload, is common in end-stage kidney disease and can manifest with symptoms such as shortness of breath, lower extremity edema, crackles in the lungs (due to pulmonary congestion), and elevated blood pressure.
Correct Answer is A
Explanation
A. Constipation is a common adverse effect of aluminum hydroxide, an antacid often used to bind phosphate in patients with renal failure to prevent hyperphosphatemia.
B. Muscle spasms are not typically associated with aluminum hydroxide.
C. Metallic taste is not a common adverse effect of aluminum hydroxide.
D. Headache is not a common adverse effect of aluminum hydroxide.
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