Which laboratory findings indicate an Addisonian Crisis?

The presence of low sodium and high potassium levels is indicative of an Addisonian crisis, which is a life-threatening condition resulting from acute adrenal insufficiency. In Addison's disease, the adrenal glands do not produce enough of the hormones cortisol and aldosterone. Aldosterone is responsible for regulating sodium and potassium levels in the body. During an Addisonian crisis, the lack of aldosterone leads to significant sodium loss and potassium retention; therefore, the patient presents with hyponatremia (low sodium) and hyperkalemia (high potassium).

Understanding the hormonal balance is crucial in this context. Sodium levels drop because the kidneys, under the influence of aldosterone, fail to reabsorb enough sodium from urine back into the bloodstream. Simultaneously, potassium levels rise because the kidneys do not excrete sufficient potassium, leading to hyperkalemia. Monitoring these electrolyte levels is essential in identifying and managing an Addisonian crisis effectively. Management typically involves administering hydrocortisone and fluids to correct the deficiencies.

The other options do not correlate with the hallmark signs of an Addisonian crisis, as they reflect different physiological conditions not associated with adrenal insufficiency.