ICU · Cardiovascular
Arrhythmia, cardiac arrest and post-arrest care
Also known as Cardiac arrest · Advanced Life Support (ALS) · Post-cardiac arrest syndrome · Targeted temperature management (TTM) · Ventricular fibrillation (VF) · Refractory VF · Extracorporeal CPR (ECPR)
Cardiac arrest in the ICU requires immediate Advanced Life Support per ERC 2021 guidelines: high-quality CPR (rate 100-120, depth 5-6cm, full recoil), early defibrillation for shockable rhythms (VF/pVT), adrenaline 1 mg IV every 3-5 minutes, amiodarone 300 mg for refractory VF. Post-arrest care per ERC/ESICM 2021: targeted temperature management (TTM2: normothermia with fever prevention is as good as 33C hypothermia, which caused more haemodynamically compromising arrhythmia), urgent coronary angiography for a cardiac cause, lung-protective ventilation, haemodynamic optimisation, neuroprognostication deferred to at least 72 hours. ECPR for refractory cardiac arrest in selected, high-volume centres.
Checked against its sources on 11 Sept 2026
Practise this topic
On this page
Study tools
Your progress
Saved on this device.
Target exams
Red flags
- TTM2 trial (NEJM 2021): hypothermia at 33C is NOT superior to normothermia — maintain normothermia and prevent fever; 33C caused more arrhythmia with haemodynamic compromise
- Do NOT prognosticate before 72 hours post-ROSC (especially if sedatives or TTM used) — use a multimodal panel, never a single predictor
- Adrenaline improved 30-day survival in PARAMEDIC2 but NOT favourable neurologic outcome at discharge, with more severe neurologic impairment among survivors
- ECPR is an option for refractory cardiac arrest only in experienced, high-volume centres with strict patient selection (young, witnessed, shockable rhythm)
Meet the patient
A 58-year-old man is wheeled into your ICU comatose after an out-of-hospital VF arrest — bystander CPR, three shocks, adrenaline 1 mg, amiodarone 300 mg, ROSC at 18 minutes. He is intubated, GCS 4, BP 88/50, temperature 37.2C, and the ECG shows anterior STEMI across V1 to V4.[1]
Three decisions. The temperature target after ROSC, the timing of coronary angiography, and the timing of neuroprognostication — each worked through below in trial order.[2][15]
References33ShowHide
- [1]Soar J, Böttiger BW, Carli P, et al. European Resuscitation Council Guidelines 2021: Adult advanced life support Resuscitation, 2021.PMID 33773825
- [2]Nolan JP, Sandroni C, Böttiger BW, et al. European Resuscitation Council and European Society of Intensive Care Medicine guidelines 2021: post-resuscitation care Intensive Care Med, 2021.PMID 33765189
- [3]Dankiewicz J, Cronberg T, Lilja G, et al. Hypothermia versus Normothermia after Out-of-Hospital Cardiac Arrest N Engl J Med, 2021.PMID 34133859
- [4]Nielsen N, Wetterslev J, Cronberg T, et al. Targeted temperature management at 33°C versus 36°C after cardiac arrest N Engl J Med, 2013.PMID 24237006
- [5]Lascarrou JB, Merdji H, Le Gouge A, et al. Targeted Temperature Management for Cardiac Arrest with Nonshockable Rhythm N Engl J Med, 2019.PMID 31577396
- [6]Lott C, Truhlář A, Alfonzo A, et al. European Resuscitation Council Guidelines 2021: Cardiac arrest in special circumstances Resuscitation, 2021.PMID 33773826
- [7]Deakin CD, Morley P, Soar J, et al. Double (dual) sequential defibrillation for refractory ventricular fibrillation cardiac arrest: A systematic review Resuscitation, 2020.PMID 32561473
- [8]Gaisendrees C, Pooth JS, Luehr M, et al. Extracorporeal Cardiopulmonary Resuscitation Dtsch Arztebl Int, 2023.PMID 37656466
- [9]Kang JK, Darby Z, Bleck TP, et al. Post-Cardiac Arrest Care in Adult Patients After Extracorporeal Cardiopulmonary Resuscitation Crit Care Med, 2024.PMID 37921532
- [10]Long B, Gottlieb M Emergency medicine updates: Cardiac arrest medications Am J Emerg Med, 2025.PMID 40107124
- [11]Kudenchuk PJ, Brown SP, Daya M, et al. Amiodarone, Lidocaine, or Placebo in Out-of-Hospital Cardiac Arrest N Engl J Med, 2016.PMID 27043165
- [12]Kudenchuk PJ, Cobb LA, Copass MK, et al. Amiodarone for resuscitation after out-of-hospital cardiac arrest due to ventricular fibrillation N Engl J Med, 1999.PMID 10486418
- [13]Dorian P, Cass D, Schwartz B, et al. Amiodarone as compared with lidocaine for shock-resistant ventricular fibrillation N Engl J Med, 2002.PMID 11907287
- [14]Perkins GD, Ji C, Deakin CD, et al. A Randomized Trial of Epinephrine in Out-of-Hospital Cardiac Arrest N Engl J Med, 2018.PMID 30021076
- [15]Sandroni C, Cariou A, Cavallaro F, et al. Prognostication in comatose survivors of cardiac arrest: an advisory statement from the European Resuscitation Council and the European Society of Intensive Care Medicine Resuscitation, 2014.PMID 25438253
- [16]Wyse DG, Waldo AL, DiMarco JP, et al. A comparison of rate control and rhythm control in patients with atrial fibrillation N Engl J Med, 2002.PMID 12466506
- [17]Van Gelder IC, Hagens VE, Bosker HA, et al. A comparison of rate control and rhythm control in patients with recurrent persistent atrial fibrillation N Engl J Med, 2002.PMID 12466507
- [18]Van Gelder IC, Groenveld HF, Crijns HJ, et al. Lenient versus strict rate control in patients with atrial fibrillation N Engl J Med, 2010.PMID 20231232
- [19]Roy D, Pratt CM, Torp-Pedersen C, et al. Vernakalant hydrochloride for rapid conversion of atrial fibrillation: a phase 3, randomized, placebo-controlled trial Circulation, 2008.PMID 18332267
- [20]Hohnloser SH, Crijns HJ, van Eickels M, et al. Effect of dronedarone on cardiovascular events in atrial fibrillation N Engl J Med, 2009.PMID 19213680
- [21]Connolly SJ, Camm AJ, Halperin JL, et al. Dronedarone in high-risk permanent atrial fibrillation N Engl J Med, 2011.PMID 22082198
- [22]Ortiz M, Martín A, Arribas F, et al. Randomized comparison of intravenous procainamide vs. intravenous amiodarone for the acute treatment of tolerated wide QRS tachycardia: the PROCAMIO study Eur Heart J, 2017.PMID 27354046
- [23]Tomlinson DR, Cherian P, Betts TR, et al. Intravenous amiodarone for the pharmacological termination of haemodynamically-tolerated sustained ventricular tachycardia: is bolus dose amiodarone an appropriate first-line treatment? Emerg Med J, 2008.PMID 18156531
- [24]Stewart RB, Bardy GH, Greene HL Wide complex tachycardia: misdiagnosis and outcome after emergent therapy Ann Intern Med, 1986.PMID 3706928
- [25]Tzivoni D, Banai S, Schuger C, et al. Treatment of torsade de pointes with magnesium sulfate Circulation, 1988.PMID 3338130
- [26]Kusumoto FM, Schoenfeld MH, Barrett C, et al. 2018 ACC/AHA/HRS Guideline on the Evaluation and Management of Patients With Bradycardia and Cardiac Conduction Delay Circulation, 2019.PMID 30586772
- [27]Yokose M, Sangawa M, Shiomi H, et al. Initial Dose of Intravenous Atropine for Patients With Symptomatic Bradycardia - A Scoping Review Circ Rep, 2025.PMID 41216404
- [28]Tencer T, Waldauf P, Balik M Treatment of supraventricular arrhythmias in critical care patients with sepsis Front Cardiovasc Med, 2026.PMID 42244795
- [29]Balik M, Maly M, Brozek T, et al. Propafenone versus amiodarone for supraventricular arrhythmias in septic shock: a randomised controlled trial Intensive Care Med, 2023.PMID 37698594
- [30]Kakihana Y, Nishida O, Taniguchi T, et al. Efficacy and safety of landiolol, an ultra-short-acting β1-selective antagonist, for treatment of sepsis-related tachyarrhythmia (J-Land 3S): a multicentre, open-label, randomised controlled trial Lancet Respir Med, 2020.PMID 32243865
- [31]Zakynthinos GE, Tsolaki V, Xanthopoulos A, et al. Prevalence, Risk Factors, and Mortality of New-Onset Atrial Fibrillation in Mechanically Ventilated Critically Ill Patients J Clin Med, 2024.PMID 39597893
- [32]Farzaneh A, Zameni N, Masoum A, et al. Incidence and predictors of postoperative atrial fibrillation following coronary artery bypass graft surgery: a meta-analysis of 207 studies Acta Cardiol, 2026.PMID 42240420
- [33]Al-Khatib SM, Stevenson WG, Ackerman MJ, et al. 2017 AHA/ACC/HRS Guideline for Management of Patients With Ventricular Arrhythmias and the Prevention of Sudden Cardiac Death Circulation, 2018.PMID 29084731