Chronic kidney disease and the dialysis patient
Stem
A 64-year-old man, 82 kg, with end-stage renal disease from diabetes is scheduled for creation of a left brachiocephalic arteriovenous fistula. He dialyzes Monday, Wednesday and Friday through a right internal jugular catheter; today is Tuesday. He has stable angina, takes metoprolol, and reports early satiety. Yesterday's post-dialysis potassium was 4.6 and he is at his dry weight. Hemoglobin is 9.8 g/dL.
Question
How will you prepare him and plan the anesthetic?
Ideal answer
HeadlineHe is ready, and I do this under a brachial plexus block: the sympathectomy and vasodilation improve fistula patency and spare him a general anesthetic.1
- ESRD is cardiovascular disease with a dialysis schedule: dialyzed within 24 hours, which I want before elective surgery, post-dialysis potassium 4.6, at dry weight. Coronary disease is the leading cause of death here; his angina is stable.
- Protect the future fistula arm: no cuffs, lines or needles on it beyond the surgical site, because damaged veins cost him his dialysis access.
- If general, drugs that do not depend on the kidney: cisatracurium for relaxation; no morphine or meperidine, because their metabolites accumulate; succinylcholine only if the potassium is normal.2
- Full stomach precautions, because he is diabetic with early satiety.
Watch for: hypotension after induction or with sedation: dialysis leaves him relatively hypovolemic, and autonomic neuropathy blunts compensation.
Breaking down the answer
- Multisystem, not just the kidney — the stem hides a potassium, a missed session or a fistula on the arm you want to use; examiners test coronary disease, anemia, platelet dysfunction, delayed gastric emptying, drug handling and judgment about timing.
- Dialysis timing — within 24 hours normalizes potassium, volume and acidosis. Changes if: dialysis the same morning, which can leave him hypovolemic and hypokalemic with residual heparin; I check a post-dialysis potassium and confirm the heparin dose.
- Potassium threshold — proceed up to about 5.5 mEq/L with a normal ECG if chronic; above 6 or ECG changes, delay and dialyze. Succinylcholine adds ~0.5 mEq/L, no more in renal failure: acceptable below about 5 mEq/L, contraindicated when already high.2
- Relaxant and reversal — cisatracurium undergoes Hofmann elimination; rocuronium is prolonged. Sugammadex is not recommended below a creatinine clearance of 30 mL/min (renally cleared complex); only high-flux hemodialysis removes it, about 70% over 3–6 hours.3 Neostigmine and glycopyrrolate, renally cleared, last longer.
- Opioids — fentanyl, reduced-dose hydromorphone and remifentanil are reasonable; morphine's glucuronides accumulate, with sedation from the 6-glucuronide and neurotoxicity from the 3-glucuronide,4 and normeperidine causes seizures.
- Uremic bleeding — uremic toxins impair platelet function; desmopressin 0.3 mcg/kg IV improves it within an hour,5 and dialysis and correcting anemia above 10 g/dL also help. I weigh this before neuraxial blocks.
- Regional for fistula creation — in a randomized trial, a brachial plexus block raised 12-month primary patency from 59% with local infiltration to 79%.1
Follow-up question
A different week: he missed dialysis and now needs urgent laparotomy for bowel obstruction. Potassium is 6.8 with peaked T waves, pH 7.22, and he is volume overloaded on 4 L of oxygen. The surgeon wants to go now. What do you do?
Follow-up answer
HeadlineLife-threatening hyperkalemia with acidosis and volume overload; I tell the surgeon that 2–3 hours of urgent dialysis makes the anesthetic safer.
The obstruction rarely kills in that interval. If ischemia means we cannot wait, I treat the potassium first: calcium chloride 1 g to stabilize the membrane, insulin 10 units with 25 g dextrose, albuterol, and bicarbonate for the acidosis. Modified rapid sequence with rocuronium, not succinylcholine, which is contraindicated with the potassium already high;2 an arterial line; mild hyperventilation to keep the pH from falling; fresh or washed cells if he needs transfusion. I recheck potassium and a gas through the case and arrange continuous renal replacement in the ICU.
Pitfalls that cost points
- Calling post-induction hypotension "deep anesthesia" in a dry, autonomically neuropathic patient.
- Avoiding lactated Ringer's out of fear of its potassium; saline's acidosis raises potassium more.
Rapid-fire
Q: Why are these patients anemic, and does it matter? A: Low erythropoietin; they tolerate chronic anemia well, but it lowers oxygen-carrying reserve and worsens uremic bleeding.
Q: Why do they have delayed gastric emptying? A: Diabetic and uremic autonomic neuropathy; I give aspiration prophylaxis and use rapid sequence when symptomatic.
Q: Why is the response to induction drugs exaggerated? A: Hypoalbuminemia raises the free fraction of highly bound drugs and the blood–brain barrier is more permeable, so I reduce and titrate doses.
Q: What happens to dexmedetomidine and ketamine? A: Both are hepatically metabolized and reasonable choices, though active metabolites of ketamine accumulate modestly.
Numbers to know
| Item | Value |
|---|---|
| Elective dialysis timing | Within 24 h before surgery |
| Sugammadex | Not recommended if CrCl <30 mL/min3 |
| Potassium I accept for elective surgery | ≤ 5.5 mEq/L |
| Succinylcholine potassium rise | ~0.5 mEq/L2 |
| Desmopressin for uremic bleeding | 0.3 mcg/kg IV5 |
| Hemoglobin target for bleeding | ~10 g/dL |
| ESRD definition | eGFR < 15 mL/min/1.73 m² or on dialysis |
Links
- hyperkalemia, Acute kidney injury, succinylcholine, Neuromuscular blockade, monitoring and reversal, Preoperative cardiac evaluation for non-cardiac surgery
- KDIGO Clinical Practice Guideline for CKD Evaluation and Management (2024); ACC/AHA Guideline for Perioperative Cardiovascular Evaluation (2024)
Sources
- 1.Long-term functional patency and cost-effectiveness of arteriovenous fistula creation under regional anesthesia: a randomized controlled trial · Journal of the American Society of Nephrology (University of Glasgow repository), 2020 · eprints.gla.ac.uk12-month primary patency 79% regional vs 59% local.
- 2.Succinylcholine: normal K increase · OpenAnesthesia · openanesthesia.org
- 3.BRIDION (sugammadex) injection prescribing information · Merck / FDA label (MedLibrary) · medlibrary.orgNot recommended for CrCl <30 mL/min; high-flux hemodialysis lowers plasma levels ~70% over 3–6 h.
- 4.Which is the best opioid to use in a patient with renal impairment? · Canadian Virtual Hospice · virtualhospice.ca
- 5.Desmopressin · StatPearls · statpearls.com
Facts on this page were checked against these sources on Oct 14, 2026. Guidelines change; confirm doses against current institutional protocols.