37. Which electrolyte imbalance is this patient experiencing?
Answer: C
This patient is experiencing hypernatremia.
The laboratory results indicate that the patient's sodium level is significantly elevated at 167 mmol/L, which is well above the normal range. This condition is classified as hypernatremia, reflecting a deficit of water relative to sodium in the body.
A) Hypokalemia
Hypokalemia refers to low potassium levels in the blood. As the patient's potassium level is measured at 4.0 mmol/L, which is within the normal range, this option is not applicable to the patient's condition.
B) Hyponatremia
Hyponatremia is characterized by abnormally low sodium levels in the blood. Given that the patient's sodium level is 167 mmol/L, which is elevated, this option is incorrect.
C) Hypernatremia
Hypernatremia is the condition where there is an excess of sodium in the blood, as evidenced by the patient's sodium level of 167 mmol/L. This is the correct answer as it directly correlates with the lab findings and the patient's clinical presentation.
D) Hyperkalemia
Hyperkalemia denotes elevated potassium levels in the blood. Since the patient's potassium level is at 4.0 mmol/L, which is normal, this option does not apply to the patient's electrolyte status.
Conclusion
The patient is clearly experiencing hypernatremia due to the significantly elevated sodium level. All other options are ruled out based on the laboratory results which do not support low potassium levels or low sodium levels, thus confirming that hypernatremia is the accurate diagnosis.