ACLS Medications.ppt

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Bradycardia Atropine Dopamine infusion Epinephrine infusion

Atropine Mechanism of Action

Inhibits the actions of acetycholine on structures innervated by postganglionic sites (smooth/cardiac muscle, SA/AV nodes)

Atropine Indications First drug for symptomatic sinus bradycardia May be beneficial in AV block or asystole Second drug in asystole or slow PEA Organophosphate poisoning; large dose may be needed Precautions MI and hypoxia atropine increases oxygen demand Avoid in hypothermia Not effective for 2nd type II or new 3rd degree block (may slow the rhythm) Doses < 0.5 mg may cause a paradoxical slowing


Dont delay pacing for severely symptomatic (unstable) patients.

Asystole or slow (