A nurse is caring for a 58-year-old client with type 2 diabetes mellitus who is scheduled for TURP in the morning. The client's preoperative blood glucose is 180 mg/dL, and the surgeon has ordered to hold all oral antidiabetic medications. What is the nurse's priority action?

Perioperative diabetes management requires insulin coverage when oral medications are held and blood glucose is elevated.

Core Nursing Explanation Key Concept Analysis: This question tests the nurse's clinical judgment in managing a patient with Type 2 Diabetes Mellitus (T2DM) during the perioperative period. The core issue is the risk of hyperglycemia when oral antidiabetic agents are held preoperatively while the patient is NPO (Nothing by mouth). Hyperglycemia impairs wound healing, increases infection risk, and can lead to complications like diabetic ketoacidosis (DKA) in severe stress situations, even in T2DM. The surgeon's order to hold oral medications is standard to prevent hypoglycemia or drug interactions, but it does not address the need for glycemic control. The nurse's role is to advocate for a proactive plan.

Answer Rationale: Key Point! The priority action is to contact the healthcare provider for insulin coverage orders. The client is NPO, has an elevated blood glucose (180 mg/dL), and oral medications are held, creating a clear gap in diabetes management. Insulin is the appropriate agent for perioperative glycemic control as it can be titrated based on frequent blood glucose monitoring, does not carry the risk of hypoglycemia from long-acting oral agents in a fasting state, and is the standard of care for managing hyperglycemia in hospitalized and surgical patients.

Distractor Analysis:
Watch out for confusion! Option ①: Administering metformin is contraindicated. The patient is NPO, and metformin carries a risk of lactic acidosis, especially in patients undergoing surgery who may experience changes in renal perfusion. Furthermore, it directly violates the surgeon's "hold" order.
Option ②: While documenting is important, notifying the surgeon "immediately" for a glucose of 180 mg/dL is not typically a critical, priority action. The surgeon is already aware of the diabetes diagnosis and gave the hold order. The nurse's action should be to seek a solution (insulin orders), not just report a known problem.
Option ④: Reassuring the client is emotionally supportive but is not a clinical action and provides false information. Blood glucose is unlikely to "normalize" after surgery; surgical stress typically causes a stress-induced hyperglycemic response due to increased counter-regulatory hormones (cortisol, epinephrine).

Related Concepts: Perioperative management of diabetes focuses on preventing both hyperglycemia and hypoglycemia. Sliding scale insulin or a basal-bolus insulin regimen is commonly used. The nurse must understand the action, peak, and duration of different insulin types (rapid-acting, short-acting, intermediate-acting, long-acting) to ensure safe administration and monitoring.

Nursing Clinical Practice Guide Clinical Scenario: You are the pre-op nurse for Mr. Johnson, a 58-year-old with T2DM scheduled for a Transurethral Resection of the Prostate (TURP). He takes metformin 1000 mg twice daily. His pre-op blood glucose at 6 AM is 180 mg/dL. He is anxious and says, "I always take my pills with breakfast. Won't my sugar go sky-high?"

Nursing Intervention Strategy: 1. Assessment: Verify NPO status, current blood glucose, home diabetes regimen, and any history of hypoglycemia. 2. Action: Contact the anesthesia provider or surgeon to discuss the blood glucose and request orders for perioperative insulin management (e.g., "Please order sliding scale regular insulin pre-op and for post-op recovery"). 3. Implementation: Once orders are received, administer insulin as prescribed, ensuring the correct type and dose. Continue frequent blood glucose monitoring (typically every 1-2 hours pre-op and immediately post-op). 4. Education & Reassurance: Explain to the client: "We are holding your metformin as ordered to keep you safe during surgery. Instead, we will use insulin, which we can adjust very carefully based on your sugar checks. This is the standard way to manage diabetes around surgery time." 5. Evaluation: Monitor for effectiveness (blood glucose trending toward target range, usually 140-180 mg/dL perioperatively) and for signs of hypoglycemia.

Patient Safety and Precautions: The major risk with insulin is hypoglycemia. Always have a fast-acting carbohydrate source (e.g., orange juice, glucose gel) readily available at the bedside, especially when the patient is NPO or sedated. Know the symptoms of hypoglycemia (shakiness, diaphoresis, confusion).

Nursing Procedure & Medication Flow Perioperative Insulin Administration: - Common order: "Sliding Scale Regular Insulin (SSRI)" subcutaneously based on blood glucose. - Example: For BG 151-200 mg/dL → 2 units; 201-250 → 4 units; 251-300 → 6 units, etc. - Critical Check: Always check blood glucose immediately before administering any insulin dose. - Timing: Rapid-acting or regular insulin is typically given 15-30 minutes before a meal, but in an NPO patient, timing is based on glucose checks and provider orders.

A Word from Your Senior Nurse "In the OR and PACU, we see blood sugars swing wildly. Your vigilance in pre-op management sets the stage. Don't just follow the 'hold meds' order blindly—think about the physiological consequence (hyperglycemia) and be the bridge to the solution (insulin coverage). That proactive critical thinking is what makes a great nurse. On the NCLEX, they love testing if you know when to call the provider versus when to act independently. Here, you need an order for insulin, so calling is the priority."