A 58-year-old client with type 2 diabetes mellitus is scheduled for an exploratory laparotomy in 2 hours due to suspected bowel obstruction. The client has been NPO since midnight and typically takes metformin 1000 mg twice daily and glipizide 10 mg once daily. Current vital signs are: BP 142/88 mmHg, HR 96 bpm, RR 20/min, T 99.2°F (37.3°C). Blood glucose level is 180 mg/dL. The anesthesiologist has ordered to hold all oral diabetic medications preoperatively. What is the nurse's priority action?

Diabetic clients undergoing surgery require careful glucose management. With oral medications held and blood glucose elevated at 180 mg/dL, insulin coverage is needed to prevent perioperative hyperglycemia complications.

Core Nursing Explanation This question tests the critical nursing management of a diabetic patient in the preoperative period, focusing on glycemic control and medication safety. Key Concept Analysis: The core theme is preoperative management of type 2 diabetes mellitus (DM). Patients are made NPO (Nothing by mouth) to prevent aspiration during anesthesia. Oral hypoglycemic agents like metformin and glipizide are held to prevent intraoperative or postoperative hypoglycemia, as their effects can be prolonged and unpredictable when the patient is not eating. However, the stress of surgery, illness (bowel obstruction), and NPO status often leads to stress-induced hyperglycemia. Uncontrolled hyperglycemia (>180 mg/dL) impairs wound healing, increases infection risk, and can lead to complications like diabetic ketoacidosis (DKA) in type 1 DM or hyperosmolar hyperglycemic state (HHS) in type 2 DM. Answer Rationale: Key Point! The patient's blood glucose is 180 mg/dL, which is elevated, especially in a preoperative context. The oral medications are correctly held. The nurse's priority is to initiate an active intervention to lower this glucose level before surgery. This requires transitioning from oral agents to insulin therapy, which provides rapid, titratable control. Therefore, contacting the physician to discuss insulin coverage (e.g., a sliding scale insulin order) is the correct and priority action. Distractor Analysis: Watch out for confusion! Option ① is dangerous. Administering metformin (which carries a risk of lactic acidosis, especially in hypoxic states or with renal impairment from dehydration/illness) and glipizide (a sulfonylurea that stimulates insulin secretion and can cause profound hypoglycemia during NPO) directly contradicts standard preoperative protocols and the physician's order. Option ③ (monitoring) is a component of care but is a passive action. With a known elevated glucose and surgery imminent, the nurse must act to correct the problem, not just observe it. Option ④ (document and proceed) neglects the nurse's responsibility to advocate for patient safety. An elevated glucose is a problem that requires intervention; documenting it without acting is inappropriate. Related Concepts: Perioperative glycemic targets are often stricter (typically 140-180 mg/dL) to optimize outcomes. The management differs for type 1 vs. type 2 DM; type 1 patients always require basal insulin to prevent DKA. Metformin is specifically contraindicated around procedures using IV contrast dye due to the risk of contrast-induced nephropathy and subsequent lactic acidosis. Concept Summary

Concept	Key Point
Preoperative NPO	Held to prevent pulmonary aspiration. Requires holding oral medications.
Holding Oral Diabetic Meds	Prevents hypoglycemia during anesthesia and NPO. Metformin is also held to prevent lactic acidosis.
Stress Hyperglycemia	Illness, surgery, and stress hormones (cortisol, epinephrine) increase blood glucose.
Perioperative Glycemic Goal	Typically 140-180 mg/dL to reduce infection and promote healing.
Insulin Coverage	The standard for glycemic control in NPO/surgical patients due to its rapid, titratable effect.

Side-by-Side Comparison!

Medication	Mechanism	Preoperative Concern	Nursing Action
Metformin	Decreases hepatic glucose production, improves insulin sensitivity.	Risk of lactic acidosis if renal perfusion is compromised (e.g., dehydration, hypotension, contrast dye).	Hold 24-48 hours before surgery/procedure with contrast.
Glipizide (Sulfonylurea)	Stimulates pancreatic beta cells to secrete insulin.	High risk of hypoglycemia during NPO status as insulin secretion continues.	Hold on the morning of surgery.
Insulin	Facilitates glucose uptake into cells.	Risk of hypoglycemia if dosed without adequate glucose intake.	Used for active control; requires frequent glucose monitoring (e.g., every 1-2 hours perioperatively).

Anatomy, Physiology & Pharmacology Points Pathophysiology: Stress from surgery triggers the release of cortisol and catecholamines, which promote gluconeogenesis and glycogenolysis, raising blood glucose. Insulin resistance also increases. Pharmacology: Sliding scale insulin (SSI) is a common "reactive" coverage method. A more proactive approach is basal-bolus insulin regimen, which is often preferred for better control. Memory Tips Mnemonic: S.H.I.P. for Pre-op Diabetic Care: Stop oral meds (Hold them). Hyperglycemia monitor (Check glucose frequently). Insulin initiate (Get orders for coverage). Prevent complications (Hypo/Hyperglycemia, infection). High-Frequency NCLEX Topics This is a classic NCLEX "priority action" question. It combines medication safety, preoperative care, and chronic disease management. The NCLEX loves to test the nurse's role in identifying a problem (elevated glucose when meds are held) and taking the correct collaborative action (contacting the physician) rather than acting independently or being passive. Watch Out for Question Variations! * Instead of "priority action," the question could ask for the "nurse's understanding" of why metformin is held (risk of lactic acidosis). * The scenario could change to a type 1 diabetic. The correct action would then be to ensure the patient receives basal insulin to prevent DKA, even if NPO. * The blood glucose could be 60 mg/dL (hypoglycemic). The priority would then be to treat the hypoglycemia with IV dextrose or oral glucose gel if conscious, and hold all diabetic medications.

Nursing Clinical Practice Guide Clinical Scenario: You are the preoperative nurse. Mr. Jones, a 58-year-old with type 2 DM, is anxious about his upcoming emergency laparotomy. He mentions he didn't take his "sugar pills" this morning and is worried his sugar will go high. You check his point-of-care glucose, and it reads 180 mg/dL. Nursing Intervention Strategy: 1. Assessment: Confirm the last dose of metformin/glipizide, review creatinine/BUN (for metformin safety), assess for signs of hyperglycemia (polyuria, polydipsia, blurred vision) or hypoglycemia. 2. Action: Immediately page the surgeon or anesthesiologist. Report: "Patient for exploratory laparotomy, type 2 DM, NPO, held oral meds. Current BG is 180. Requesting insulin coverage orders (e.g., sliding scale) for preoperative management." 3. Implementation: Once orders are received, administer insulin as prescribed. Continue monitoring glucose per protocol (often every 1-2 hours in the perioperative period). 4. Education: Reassure the patient that holding his pills is standard and safe, and that you are managing his sugar with insulin until he can eat again after surgery. Patient Safety and Precautions: * Key Point! Never administer metformin if there is suspicion of renal impairment, dehydration, or if IV contrast will be used. * Always double-check insulin type, dose, and the current glucose reading before administration using the "5 Rights" of medication safety. * Have a source of rapid-acting glucose (e.g., D50W IV, oral glucose gel) readily available in case of insulin-induced hypoglycemia. Nursing Procedure & Medication Flow Managing Preoperative Insulin: 1. Verify physician's order for insulin type and sliding scale. 2. Perform hand hygiene and don gloves. 3. Check patient's current blood glucose via fingerstick. 4. Calculate the correct insulin dose based on the sliding scale order (e.g., BG 151-200 = 2 units regular insulin). 5. Withdraw the correct dose into an insulin syringe. Have a second nurse verify the dose if required by policy. 6. Administer subcutaneously, typically in the abdomen. 7. Document the blood glucose value, insulin dose, time, and site. 8. Plan to recheck blood glucose in 1-2 hours or as ordered. A Word from Your Senior Nurse "In the fast-paced pre-op area, it's easy to get caught up in checklists and forget the 'why.' This patient's elevated glucose isn't just a number—it's a red flag for increased surgical risk. Your critical thinking to recognize that holding the pills created a gap in management, and your initiative to bridge that gap by calling for insulin orders, is what makes you a true patient advocate. On the NCLEX and in real life, always connect the dots between the disease process, the current situation (surgery/NPO), and the appropriate nursing action. That's the heart of safe, effective nursing care."