Fluid Resuscitation Guidelines for Diabetic Patients Undergoing Surgery

Preoperative Fluid Management

The American College of Surgeons recommends ensuring adequate hydration before surgery by allowing clear fluid intake up to 2 hours before anesthesia induction and solid food up to 6 hours preoperatively 1, 2
The American Society of Anesthesiologists suggests avoiding excessive fasting to prevent preoperative fluid depletion 2
Administer preoperative carbohydrate drinks (400ml of 12.5% maltodextrin solution) 2-3 hours before anesthesia to reduce insulin resistance and improve metabolic state, as recommended by the European Society of Anesthesiology 3, 4
Correct any existing fluid and electrolyte imbalances before surgery to ensure the patient enters the operating room in a euvolemic state, according to the American College of Surgeons 2
Monitor preoperative blood glucose levels, with a target range of 5-10 mmol/L (0.9-1.8 g/L), as suggested by the Association of Anaesthetists 5

The American Society of Anesthesiologists recommends administering crystalloids at a rate of 1-4 ml/kg/h as maintenance fluid during surgery 2
Use balanced crystalloid solutions (e.g., Hartmann's solution) rather than 0.9% saline to reduce the risk of hyperchloremic acidosis, as suggested by the European Society of Anesthesiology 2
For high-risk diabetic patients or those undergoing high-risk procedures, implement goal-directed fluid therapy (GDFT) using minimally invasive cardiac output monitoring, according to the American College of Cardiology 1, 2
Administer fluid boluses (200-250 ml) only when there is objective evidence of hypovolemia (>10% fall in stroke volume), as recommended by the American Society of Anesthesiologists 1
Monitor blood glucose levels hourly during lengthy procedures, maintaining levels between 5-10 mmol/L (0.9-1.8 g/L), as suggested by the Association of Anaesthetists 5

The American College of Surgeons recommends encouraging early oral intake as soon as the patient is awake and free of nausea 1, 6
Discontinue intravenous fluids once adequate oral intake is established, according to the American Society of Anesthesiologists 2
If intravenous fluids are required postoperatively, administer maintenance fluids at 25-30 ml/kg/day with no more than 70-100 mmol sodium/day, as suggested by the European Society of Anesthesiology 6
Replace ongoing losses (e.g., vomiting, high stoma output) on a like-for-like basis in addition to maintenance requirements, according to the American College of Surgeons 6
Continue monitoring blood glucose levels postoperatively, with immediate intervention for hypoglycemia (<3.3 mmol/L or 0.6 g/L) or hyperglycemia (>10 mmol/L or 1.8 g/L), as recommended by the Association of Anaesthetists 7, 8

Patients with poorly controlled diabetes (high HbA1c) have significantly worse outcomes, including increased risk of infectious complications and mortality, according to the American Diabetes Association 1, 6
The highest risk group for perioperative complications are patients without diagnosed diabetes who develop postoperative hyperglycemia, as suggested by the American College of Surgeons 1
For patients with type 1 diabetes or insulin-dependent type 2 diabetes, resume previous insulin regimen once oral intake is established, adjusting doses based on inpatient requirements, according to the European Association for the Study of Diabetes 9, 8
For hyperglycemia >16.5 mmol/L (3 g/L), check for ketosis and administer rapid-acting insulin accordingly, as recommended by the Association of Anaesthetists 7, 8