Rate: 60-100 bpm\nRegularity: Regular\nP waves: Present, one before each QRS\nPR interval: 0.12-0.20 seconds\nQRS: <0.12 seconds\nT wave: Upright in most leads

Characteristics:\n• No P waves — chaotic baseline\n• Irregularly IRREGULAR rhythm\n• Rate: 100-180 bpm (if uncontrolled)\nTreatment:\n• Rate control: Metoprolol, Diltiazem\n• Rhythm control: Amiodarone\n• Anticoagulation: Warfarin, DOACs (stroke prevention)\n• CHA2DS2-VASc score guides anticoagulation

STABLE V-tach:\n• Amiodarone 150mg IV over 10 min\n• Synchronized cardioversion if no response\nUNSTABLE V-tach (with pulse):\n• Immediate synchronized cardioversion\nPULSELESS V-tach:\n• CPR + Defibrillation (unsynchronized)\n• Epinephrine 1mg IV q3-5 min\n• Amiodarone 300mg IV push

IMMEDIATE actions:\n1. Call code — start CPR\n2. Defibrillate (unsynchronized) — 200J biphasic\n3. Continue CPR 2 minutes\n4. Epinephrine 1mg IV every 3-5 minutes\n5. Amiodarone 300mg IV push\n6. Defibrillate again after each 2 min CPR cycle\nNO synchronized cardioversion — no organized rhythm!

1st degree: Long PR (>0.20 sec) — all conduct\n2nd degree Type I (Wenckebach): Progressive PR lengthening then dropped QRS\n2nd degree Type II: Constant PR, sudden dropped QRS — may need pacemaker\n3rd degree (Complete): No relationship between P and QRS — pacemaker required

HYPERKALEMIA: Peaked T waves → widened QRS → sine wave → VF\nHYPOKALEMIA: Flat T waves, U waves, prolonged QU\nHYPERCALCEMIA: Short QT interval\nHYPOCALCEMIA: Prolonged QT interval\nHYPOMGNESEMIA: Prolonged QT, torsades de pointes

Indication: Symptomatic bradycardia (HR <60 with symptoms)\nDose: 0.5mg IV every 3-5 min\nMax dose: 3mg total\nSymptoms requiring treatment: Hypotension, altered LOC, chest pain, syncope\nIf no response: TCP (transcutaneous pacing) or Dopamine infusion

R — Rescue patients in immediate danger\nA — Alarm — activate fire alarm\nC — Confine — close doors to contain fire\nE — Extinguish (if safe) or Evacuate\nUsed with PASS for fire extinguisher:\nPull pin, Aim at base, Squeeze handle, Sweep side to side