Anesthesiology APPLIED Exam › Cardiovascular and cardiac anesthesia

The heart-transplant recipient for non-cardiac surgery

Cardiovascular and cardiac anesthesia·~4 min read· Physician-reviewed✓ Sourced · 5

Stem

A 61-year-old man, 84 kg, had an orthotopic heart transplant six years ago for ischemic cardiomyopathy and now needs an elective open right hemicolectomy for colon cancer. He takes tacrolimus, mycophenolate and low-dose prednisone. He walks a mile without symptoms. Resting heart rate is 96 in sinus rhythm, BP 138/84, creatinine 1.6 mg/dL. His last angiogram, a year ago, showed mild allograft vasculopathy.

Question

How does his transplanted heart change your anesthetic plan?

Ideal answer

HeadlineHis heart is denervated: no rate response to laryngoscopy, hypovolemia or pain, so he is preload dependent and needs direct-acting drugs.¹

Limit fasting, fluid before induction, slow induction, arterial line, because the graft raises output only by filling more and by circulating catecholamines.¹^,2
Direct vasopressors, isoproterenol and pacing ready, because atropine and glycopyrrolate will not raise his rate.²
ST segments watched, TEE available, angiogram and echo reviewed, because ischemia is silent without sensory nerves and allograft vasculopathy is the main long-term threat.²
Continue tacrolimus and steroids; check levels, potassium, magnesium; no NSAIDs, which add to calcineurin-inhibitor nephrotoxicity, and strict asepsis for every line.³
Sugammadex for reversal, as reported in these patients,⁴ because although the denervated heart should not slow with neostigmine,² bradycardia and cardiac arrest have been reported in recipients.³

Breaking down the answer

Lead with denervation — lost sympathetic and parasympathetic input; absent vagal tone sets his resting rate at 90 or above, and no reflex tachycardia warns of hypovolemia or light anesthesia.² This one idea organizes every other step.
Direct agents only — upregulated beta receptors can exaggerate the response to circulating catecholamines,¹ while atropine and glycopyrrolate are ineffective and ephedrine is blunted (it keeps its direct component).² Partial reinnervation in later years makes responses unpredictable, which changes nothing about keeping direct agents ready.
Volume before vasodilation — stroke volume rises by Frank-Starling, so sudden falls in venous return from induction, neuraxial block or bleeding are poorly tolerated.²^,5 An epidural is reasonable once he is volume-loaded, dosed slowly.
Diastolic dysfunction — common even when systolic function is normal, so filling pressures matter.³
Silent ischemia — allograft vasculopathy raises infarction risk and denervation removes angina, so a recent angiogram or stress test drives the decision, not his symptoms.²
Immunosuppression has anesthetic consequences — tacrolimus and cyclosporine are metabolized by cytochrome P450, prolong some relaxants and raise renal risk with NSAIDs.³ Hyperkalemia, hypomagnesemia, diabetes and renal insufficiency are expected side effects.⁵
Infection is a major cause of death — fever and leukocytosis are blunted, so asepsis and a low threshold to culture are part of the plan.⁵^,3

Follow-up question

During mobilization of the hepatic flexure, his heart rate falls from 94 to 48 and his BP to 72/40. The resident has just given 0.6 mg of atropine with no change. What now?

Follow-up answer

HeadlineAtropine will not work on a denervated graft. I say so to the room and ask the surgeon to stop traction while I treat.

I check for hypovolemia and bleeding and give a fluid bolus, because he depends on preload.⁵ For the rate, a direct chronotrope: small epinephrine boluses or an isoproterenol infusion, with pacing pads on and transcutaneous pacing if he does not respond.²^,5 New arrhythmia in a transplant recipient raises concern for rejection or ischemia,² so I check a 12-lead ECG, send troponin, and look with TEE for new wall-motion abnormalities. Once he is stable I call his transplant cardiologist and plan postoperative telemetry and an echo.

Pitfalls that cost points

Treating bradycardia with repeated atropine doses.
Assuming no chest pain means no ischemia.

Rapid-fire

Q: Why is his resting heart rate high? A: Loss of vagal tone leaves the sinus node at its intrinsic rate, typically 90–130 beats per minute.²

Q: Why does ephedrine work poorly? A: It acts mostly by releasing norepinephrine from nerve endings, which the denervated graft lacks.³

Q: Which vasopressors work? A: Direct agents such as phenylephrine, norepinephrine and vasopressin, with isoproterenol for rate.²

Q: When is rejection risk highest? A: In the first three months after transplant,³ and elective surgery is deferred in the first 6–12 months.²

Numbers to know

Item	Value
Resting heart rate	90–130/min²
Atropine, glycopyrrolate	Ineffective on rate²
Ephedrine	Blunted (keeps its direct component)²
Highest rejection risk	First 3 months³
Elective surgery deferred	First 6–12 months after transplant²

Sources

1.Denervated heart: exercise physiology · OpenAnesthesia, 2015 · openanesthesia.org
2.Orthotopic Heart Transplantation · OpenAnesthesia, 2026 · openanesthesia.orgStates anticholinesterase reversal agents do not cause bradycardia; case-report literature describes exceptions.
3.Anaesthesia for noncardiac surgery in a heart-transplanted patient: a clinical case and review of the literature · Pan African Medical Journal (Nassirou et al.), 2016 · pmc.ncbi.nlm.nih.govArticle in French; case report with literature review.
4.Anesthesia management of a patient with heart transplant for non-cardiac surgery: case report and literature review · Lijecnicki vjesnik (Brigljevic Kniewald et al.), 2020 · lijecnicki-vjesnik.hlz.hr
5.Anaesthesia for non-cardiac surgery in a cardiac transplant recipient · Indian Journal of Anaesthesia (Swami et al.), 2011 · pmc.ncbi.nlm.nih.gov

Facts on this page were checked against these sources on Oct 16, 2026. Guidelines change; confirm doses against current institutional protocols.