Respuesta :
Answer:
Option A, serum bicarbonate of 28 mEq/L
Explanation:
In an alkalotic state, the patient's arterial blood gas (ABG) will first show a pH value that is more basic than the expected range of 7.35 to 7.45. This means the pH value will be greater than 7.45. This rules out option D.
In a metabolic state, the patient's serum bicarbonate will have to be greater than the expected range of 22-26 mEq/L. This is because bicarbonate is also basic. This rules out option C, while leaving option A as an option to consider because it fits the parameters necessary.
Lastly, in a metabolic state, the patient's partial pressure carbon dioxide, PaCO2, will be outside of the expected range of 35-45 mmHg. This however, is not necessarily indicative of a metabolic state because both acute metabolic alkalosis and acidosis can yield normal PaCO2 levels. Atop this, option B is still within the range and can be ruled out.
Therefore, the ABG result most consistent with metabolic alkalosis is option A, serum bicarbonate of 28 mEq/L
The correct answer to the question is a. Serum bicarbonate of 28mEq//L. The arterial blood gas result consistent with metabolic alkalosis is a serum bicarbonate of 28mEq//L. This result shows an increase in bicarbonate, which could indicate metabolic alkalosis, assuming a pH above the normal range and appropriate clinical context.
The arterial blood gas result that would be consistent with metabolic alkalosis is a. Serum bicarbonate of 28mEq//L. Metabolic alkalosis is characterized by an increase in serum bicarbonate, which is indicative of an excess in base or a loss of acid within the body. According to reference values, normal total venous bicarbonate ranges from 22-29 mM. With a serum bicarbonate of 28 mEq/L, this value is at the high end of normal, suggesting a possible metabolic alkalosis if accompanied by an appropriate clinical context and a pH above 7.45.
Other choices, such as PaCO2 less than 35mmHg, which may suggest respiratory alkalosis, and a pH of 7.26 or a serum bicarbonate of 21mEq//L, both suggesting acidosis, are not indicative of metabolic alkalosis. The correct answer to the question is a. Serum bicarbonate of 28mEq//L.
