Difference between revisions of "ACLS: Bradycardia"

(Antidotes for toxicologic causes)
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===Antidotes for toxicologic causes===
===Antidotes for toxicologic causes===
**[[Beta-Blocker Toxicity]]  
*[[Beta-Blocker Toxicity]]  
***glucagon 5mg IV Q10min (rpt up to 3 doses)
**glucagon 5mg IV Q10min (rpt up to 3 doses)
**[[Calcium Channel Blocker Toxicity]]
*[[Calcium Channel Blocker Toxicity]]
***Calcium gluconate 3g OR insulin 1U/kg bolus
**Calcium gluconate 3g OR insulin 1U/kg bolus
**[[Digoxin Toxicity]]
*[[Digoxin Toxicity]]
***Dig immune Fab 10-20 vials
**Dig immune Fab 10-20 vials
**[[Opioid Toxicity]]
*[[Opioid Toxicity]]
***Nalaxone 0.4mg IV
**Nalaxone 0.4mg IV
**[[Organophosphate Toxicity]]
*[[Organophosphate Toxicity]]
***Atropine 2mg IV OR Pralidoxime 2g IV over 10-15min
**Atropine 2mg IV OR Pralidoxime 2g IV over 10-15min
==See Also==
==See Also==

Revision as of 18:28, 8 March 2015

This page is for bradycardia with a pulse; for bradycardia without a pulse see Adult Pulseless Arrest (i.e. PEA)


  • Only intervene if pt is symptomatic (hypotension, AMS, chest pain, pulm edema)


  1. Sinus node dysfunction
    1. Sinus bradycardia
    2. Sinus arrest
    3. Tachy-Brady Syndrome (Sick Sinus)
    4. Chronotropic incompetence
  2. AV node dysfunction
    1. 1st degree AV block
    2. 2nd degree AV block Mobitz I/Wenckebach
    3. 2nd degree AV block Mobitz II
    4. 3rd degree AV block (complete heart block)


  1. Ischemia/Infarction
    1. Inferior MI (involving RCA)
  2. Neurocardiogenic/reflex-mediated
    1. Increased ICP
    2. Vasovagal reflex
    3. Hypersensitive carotid sinus syndrome
    4. Intra-abdominal hemorrhage (i.e. ruptured ectopic)
  3. Metabolic/endocrine/environmental
    1. Hyperkalemia
    2. Hypothermia (Osborn waves on ECG)
    3. Hypothyrodism
  4. Toxicologic
    1. B-blocker
    2. Ca-channel blocker
    3. Digoxin toxicity
    4. Opioids
    5. Organophosphates
  5. Infectious/Postinfectious
    1. Chagas dz
    2. Lyme dz
    3. Syphilis
  6. Sick Sinus Syndrome


  1. Atropine
    1. Can be used as temporizing measure (while awaiting pacing and/or chronotropes)
    2. Use cautiously in pts w/ ongoing ischemia (tachycardia may worsen ischemia)
    3. 0.5mg q3-5min (max 3 mg or 6 doses)
      1. may not work in 2nd/3rd deg HB, heart transplant
  2. Chronotropes
    1. Dopamine 2-10mcg/kg/min
    2. Epinephrine 2-10mcg/min
  3. Transcutaneous Pacing
  4. Transvenous Pacing

Antidotes for toxicologic causes

See Also


  1. Semelka, M et al. Sick Sinus Syndrome: A Review. Am Fam Physician. 2013 May 15;87(10):691-696.http://www.aafp.org/afp/2013/0515/p691.html#afp20130515p691-t2.