Anesthesia and Peri‑operative Care Guidelines for Pancreaticoduodenectomy (Whipple Procedure)

Pre‑operative Assessment and Optimization

Structured geriatric assessment (functional status, frailty, comorbidities, physiological reserve) should be performed for patients aged ≈ 50–75 years by a senior anesthesiologist and a geriatrician. [@3]
Mandatory evaluation of cardiopulmonary function, nutritional status, anemia, diabetes, renal function, and postoperative delirium risk is required before surgery. [@3]
Pre‑operative anemia should be corrected with iron, vitamin B12 and folate supplementation started ≥ 28 days before elective surgery to lower morbidity and mortality. [@4]
Pre‑operative nutrition optimisation includes oral nutritional supplementation and avoidance of prolonged fasting; clear liquids may be given up to 2 h before induction. [@1]
Identify renal insufficiency pre‑operatively to adjust opioid dosing and to avoid NSAIDs. [@7]

Balanced general anesthesia combined with a thoracic epidural (levels T5–T8) is the gold‑standard technique for pancreaticoduodenectomy. [@1]
In high‑risk patients, a propofol + remifentanil regimen is preferred to reduce postoperative nausea and vomiting. [@1]

Reduce the dose of induction and maintenance anesthetic agents in elderly patients; failure to adjust leads to relative overdose and prolonged hypotension. [@7]
Use depth‑of‑anesthesia monitoring (e.g., BIS); the “triple low” (low BIS, hypotension, low anesthetic concentration) is linked to increased mortality. [@7]

Thoracic epidural analgesia provides superior pain control, fewer respiratory complications, and less insulin resistance compared with intravenous opioids. [@1]
Initiate the epidural before induction and maintain it for 48 h post‑operatively. [@1]
If epidural placement is contraindicated, use patient‑controlled opioid analgesia or an intravenous lidocaine infusion (moderate evidence for reduced ileus, shorter stay, and lower pain). [@1]
Prevent epidural‑related hypotension with vasopressors rather than large fluid boluses. [@6]

Mandatory invasive monitoring includes arterial blood pressure, central venous catheter, urinary catheter, and core temperature measurement. [@1]
Peripheral nerve stimulation should be employed to monitor neuromuscular blockade, as elderly patients may experience unpredictable prolonged block. [@7]
When available, use BIS or a similar depth monitor; otherwise apply age‑adjusted MAC nomograms (e.g., Lerou). [@7]

Adopt a restrictive fluid strategy: replace only measured losses and aim for a near‑zero fluid balance. [@1]
Use balanced crystalloid solutions to avoid hyperchloremic acidosis, renal edema, and cortical hypoperfusion. [@6]
Avoid fluid overload; excess sodium and water increase complications and delay gastrointestinal recovery. [@6]

Patients > 65 years have higher mortality when pre‑operative hematocrit < 24 % or when blood loss is substantial; mortality is lower with hematocrit 30–36 % and loss < 500 ml. [@7]
Maintain adequate hemoglobin to prevent myocardial ischemia, falls, and impaired wound healing, while avoiding unnecessary transfusions. [@7]

Protect peripheral nerves (ulnar, common peroneal, radial, brachial plexus) with padding; inspect pressure points every 30 min during lengthy procedures. [@7]

Continue the thoracic epidural for 48 h, then transition to multimodal oral analgesia (acetaminophen, NSAID/COX‑2 inhibitor if renal function permits, and oral opioids as needed). [@1]
Analgesic algorithm (Praxis evidence):

Patients with ≥ 2 risk factors (female sex, non‑smoker, major abdominal surgery, prior PONV, postoperative opioid use) receive dexamethasone at induction or a serotonin‑type antagonist at the end of surgery. [@1]
High‑risk patients (≥ 3 factors) receive total‑intravenous anesthesia with propofol + remifentanil, dexamethasone 4–8 mg at induction, and a serotonin antagonist, droperidol, or metoclopramide 30–60 min before closure. [@1]

Routine nasogastric decompression should be avoided; NG tubes increase fever, atelectasis, pneumonia, and delay return of bowel function without benefit. [@1]
Early oral intake as tolerated is recommended; a step‑up diet is safe, and routine post‑operative enteral feeding via tube offers no advantage after pancreaticoduodenectomy. [@1]

Implement a multicomponent delirium‑prevention bundle: early mobilization, adequate hydration, sleep promotion, cognitive stimulation, and frequent re‑orientation. [@5]
Screen for delirium immediately using CAM or CAM‑ICU; postoperative delirium triples 30‑day mortality risk. [@5]
Monitor for delirium primarily within the first 72 h post‑surgery. [@5]
Optimize pain control with opioid‑sparing multimodal regimens to reduce delirium incidence. [@5]

Patients with a predicted postoperative mortality > 10 % must be admitted to a level 2/3 intensive care unit for at least 48–72 h. [@5]
Continuous monitoring using Modified Early Warning Scores and rapid‑response team activation is advised. [@5]

In postoperative pancreatitis, provide aggressive opioid analgesia, maintain a near‑zero fluid balance, avoid routine NG decompression, and initiate oral intake when tolerated. [@6]

Do not administer NSAIDs to patients with acute kidney injury or high renal‑risk profiles. [@6]
Do not give excessive IV fluids to treat epidural‑related hypotension; use vasopressors instead. [@6]
Do not omit age‑adjusted anesthetic dosing; failure leads to overdose and hypotension. [@7]
Do not use routine nasogastric tubes, as they increase complications without benefit. [@1]
Do not delay postoperative mobilization; early mobilization reduces delirium and other complications. [@5]
Prescribe laxatives prophylactically to prevent opioid‑induced constipation. [@2]