Deductive vs. Inductive Reasoning HESI A2 Practice Questions

A student nurse reasons:
“All patients with diabetic ketoacidosis (DKA) are dehydrated. Mr. X has DKA. Therefore, he is dehydrated.”
This is an example of:

A. Inductive reasoning
B. Deductive reasoning
C. Circular reasoning
D. Hasty generalization

Correct Answer: ✅ B. Deductive reasoning

Rationale:
This is a classic example of deductive reasoning, moving from a general rule (patients with DKA are dehydrated) to a specific conclusion (Mr. X is dehydrated). The logic follows a valid structure, assuming the premise is accurate.

Why the Other Choices Are Incorrect:
❌ A. Inductive reasoning moves from specific examples to general rules, the opposite of what’s used here.
❌ C. Circular reasoning repeats a claim without supporting evidence.
❌ D. Hasty generalization occurs when a broad rule is made from too little evidence, which is not the case here.

Final Answer: ✅ B. Deductive reasoning

Question 13 – Clinical Judgement | Applying the Nursing Process (ADPIE)

A nurse finds a diabetic patient confused, sweaty, and trembling. The glucometer reads 48 mg/dL. The nurse gives oral glucose and monitors the patient closely. What part of the nursing process does this best represent?

A. Assessment
B. Diagnosis
C. Implementation
D. Evaluation

Correct Answer: ✅ C. Implementation

Rationale:
This step illustrates implementation, where the nurse acts on the clinical data (symptoms + glucometer reading) and intervenes appropriately by administering glucose.

Why the Other Choices Are Incorrect:
❌ A. Assessment would be collecting data, which occurs prior.
❌ B. Diagnosis is when the nurse identifies the clinical issue (e.g., hypoglycemia).
❌ D. Evaluation follows intervention to see if the patient improves, which hasn’t occurred yet.

Final Answer: ✅ C. Implementation

Question 14 – Problem-Solving & Decision-Making | Prioritization

Four patients arrive simultaneously in the ED. Which patient should the triage nurse assess first?