A nurse is reviewing laboratory results for a client who has metabolic alkalosis. Which of the following blood gas values should the nurse expect?

A. Chronic health condition: The client has a history of Parkinson’s disease and anxiety, which are relevant but not immediate concerns. Chronic conditions require long-term management rather than urgent intervention.
B. Current level of consciousness: The client is restless and not following commands, which may indicate hypoxia, worsening infection, or sepsis. A change in mental status is a critical finding requiring immediate evaluation.
C. Oxygen saturation level: The oxygen saturation is 89% on room air, which is below the normal range (≥95%). This suggests respiratory compromise, likely due to pneumonia, requiring urgent oxygen support.
D. Heart rate: The client has a heart rate of 104/min, which is mildly elevated and expected due to fever and respiratory distress. However, it is not the most critical concern compared to respiratory distress and altered mental status.
E. Respiratory rate: The respiratory rate is 30/min, indicating tachypnea and increased work of breathing, suggesting respiratory distress or impending respiratory failure. This requires immediate intervention.
F. Tremors: Tremors are a common finding in Parkinson’s disease and do not require immediate intervention.

A) Irregular heart rate: An irregular heart rate is a key manifestation of hyperkalemia. Elevated potassium levels can interfere with the normal electrical activity of the heart, leading to arrhythmias, which can cause an irregular heart rate. In severe cases, hyperkalemia can lead to life-threatening cardiac events such as ventricular fibrillation or asystole.

B) Dry mucous membrane: Dry mucous membranes are more commonly associated with dehydration, not hyperkalemia. Dehydration can cause fluid volume depletion, which leads to dry mouth and other signs of insufficient hydration. While renal failure can lead to fluid balance issues, dry mucous membranes are not typically linked to elevated potassium levels.

C) Trousseau's sign: Trousseau's sign is a clinical indicator of hypocalcemia, not hyperkalemia. It is a spasm of the hand and wrist that occurs when a blood pressure cuff is inflated above systolic pressure for several minutes. This sign suggests low calcium levels, and while calcium imbalance can occur in renal failure, it is unrelated to hyperkalemia.

D) Hyperactive reflexes: Hyperactive reflexes are more commonly associated with conditions like hypocalcemia, rather than hyperkalemia. In hyperkalemia, the typical findings include muscle weakness or paralysis due to the effect of potassium on muscle and nerve function, but hyperactive reflexes would not be expected.