The nurse is teaching a patient with diabetes mellitus how to differentiate between hypoglycemia and ketoacidosis. The patient demonstrates understanding of hypoglycemia by stating they will check their blood glucose when experiencing which of the following symptoms?

Choice A reason: Fruity-smelling breath is a symptom of ketoacidosis, not hypoglycemia. Ketoacidosis occurs when the body produces high levels of ketones due to a lack of insulin, leading to metabolic acidosis.

Choice B reason: Sweating and nervousness are common symptoms of hypoglycemia. Low blood glucose levels trigger the release of adrenaline, which causes these symptoms. Patients should check their blood glucose when experiencing these signs to prevent severe hypoglycemia.

Choice C reason: Nausea and vomiting are more associated with ketoacidosis. High blood glucose levels and the presence of ketones can cause gastrointestinal upset.

Choice D reason: Increased thirst and urination are also symptoms of hyperglycemia and ketoacidosis. These symptoms result from the body's attempt to eliminate excess glucose and ketones through urine.

Choice A reason: The lab results pH 7.46, PaCO2 30, HCO3 24 suggest a slightly alkaline state with normal bicarbonate levels, which could indicate respiratory alkalosis with compensation. However, for a patient with a small bowel obstruction and nasogastric suction, this is less likely.

Choice B reason: The lab results pH 7.48, PaCO2 42, HCO3 29 indicate metabolic alkalosis. This is a common finding in patients with small bowel obstruction who have been on nasogastric suction, which removes stomach acids and leads to an increase in bicarbonate levels. The elevated pH and bicarbonate levels are consistent with this condition.

Choice C reason: The lab results pH 7.31, PaCO2 34, HCO3 18 indicate metabolic acidosis. This finding is inconsistent with the expected results for a patient with small bowel obstruction and nasogastric suction, which typically leads to metabolic alkalosis due to loss of gastric acid.