In a 71-year-old man with diabetes and an HbA1c of 8.7%, is it safe to proceed with a scheduled cystoscopy and lithotripsy?

Yes, proceed with the cystoscopy and lithopaxy at an HbA1c of 8.7%

For this 71-year-old diabetic patient undergoing cystoscopy with lithopaxy, you can safely proceed with the scheduled procedure despite the HbA1c of 8.7%, as current guidelines recommend an A1c target of <8% for elective surgeries, and this patient falls just above that threshold. 1

Guideline-Based Perioperative A1c Threshold

The 2023 American Diabetes Association guidelines explicitly state that the A1C target for elective surgeries should be <8% (63.9 mmol/L) whenever possible 1. Your patient's A1c of 8.7% is marginally above this cutoff—only 0.7% higher. This is not an absolute contraindication but rather a "whenever possible" recommendation, indicating flexibility for clinical judgment.

Key Considerations for Proceeding:

• Cystoscopy with lithopaxy is a relatively minor urological procedure compared to major abdominal or cardiac surgery, with lower surgical stress and shorter operative times
• The 2021 Lancet guidelines emphasize that high HbA1c values are less strongly associated with poor outcomes compared to acute perioperative hyperglycemia 2
• Delaying surgery for A1c optimization takes 2-3 months and may not be appropriate for symptomatic bladder stones requiring intervention

Perioperative Glycemic Management Strategy

Rather than canceling the procedure, focus on tight perioperative glucose control (target 100-180 mg/dL) 1:

Day of Surgery Protocol:

1. Hold metformin on the day of surgery 1
2. Discontinue SGLT2 inhibitors 3-4 days before surgery if the patient is taking them 2, 1
3. Give 75-80% of long-acting insulin dose or half of NPH dose on the morning of surgery 1
4. Monitor blood glucose every 2-4 hours while NPO and during the procedure 1
5. Use short- or rapid-acting insulin for corrections to maintain glucose 100-180 mg/dL 1

Post-Procedure Management:

• Resume home diabetes medications once oral intake resumes
• Continue glucose monitoring for 24 hours post-procedure
• The patient can likely be discharged same-day or within 24 hours, as 89% of elderly patients undergoing ureteroscopy procedures are discharged within 24 hours 3

Risk Assessment in This Population

Urological stone procedures in elderly diabetic patients have excellent safety profiles:

• In a series of 110 elderly patients (mean age 77.2 years) undergoing ureteroscopy, only 9% had complications, with most being minor (Clavien I/II) 3
• Stone-free rate was 95.2% at 6 months with minimal morbidity 4
• Recent data shows that selected high-risk patients (ASA ≥3) can safely undergo ureteroscopy even in ambulatory surgery centers without emergent transfers 5

Common Pitfalls to Avoid

1. Don't automatically cancel based solely on A1c: The evidence shows that acute perioperative glucose control matters more than baseline A1c 2
2. Don't forget to hold SGLT2 inhibitors: This is an FDA recommendation due to euglycemic DKA risk 2, 1
3. Don't use sliding scale insulin alone: Basal-bolus coverage is superior to correction-only insulin in surgical patients 1
4. Don't target glucose <100 mg/dL: Tighter targets increase hypoglycemia without improving outcomes 1

Documentation and Informed Consent

Document that:

• The patient's A1c is marginally above the <8% target
• The benefits of proceeding (symptom relief, stone removal) outweigh the minimal additional risk
• Perioperative glucose management plan is in place
• The patient understands there may be slightly increased infection risk, though this is mitigated by appropriate glucose control

The decision to proceed is clinically sound, evidence-based, and prioritizes the patient's quality of life by avoiding unnecessary surgical delays for marginal A1c improvement.