Cardiac






EMS Protocols Quick Guide


EMS Protocols Quick Guide

Airway Management
CPR
VF / Pulseless V-Tach
Asystole / PEA
Bradycardia
Wide Tachycardia
PSVT
Atrial Fibrillation
ACS
CHF
Stroke
ICH

Airway Management

Oxygenation: Use nasal cannula (1-6 LPM), NRB mask, or CPAP. Maintain SpO2 ≥ 94%.

  • Stable Criteria: Adequate respiratory rate and effort, SpO2 ≥ 94%, no significant distress.
  • Unstable Criteria: SpO2 < 90%, altered mental status, cyanosis, significant respiratory distress, or failure.
  • CPAP: Start at 10 cm H2O and adjust for tolerance. Avoid in active vomiting, SBP < 90, or pneumothorax.
  • Intubation:
    • Pre-oxygenate with 100% O2 via NRB.
    • Initiate apneic oxygenation (15 LPM via NC).
    • Sedate (Etomidate or Ketamine).
    • Paralyze (Succinylcholine).
    • Confirm placement with ETCO2 and auscultation.
    • Post-intubation: Sedate with Midazolam and consider analgesia (Fentanyl or Dilaudid).
  • Challenging Airway: Consider bougie, suctioning, and i-gel® if unable to intubate.

Cardiopulmonary Resuscitation (CPR)

  • Scene Safety: Ensure scene safety before approaching the patient.
  • Compressions: 100-120/min. Minimize interruptions; ventilate at 10 breaths/min.
  • Stable vs. Unstable: Not applicable – cardiac arrest always requires immediate CPR.
  • Drugs: Epinephrine for non-shockable rhythms every 4 minutes (max 3 doses).
  • Reversible Causes: Treat hypoxia, tension pneumothorax, hypoglycemia, and other H’s/T’s.
  • Pediatrics: Compression-to-ventilation ratio: 30:2 (1 rescuer) or 15:2 (2 rescuers).

Ventricular Fibrillation / Pulseless V-Tach (VF/pVT)

  • Scene Safety: Ensure scene safety before approaching the patient.
  • Stable Criteria: Not applicable – VF/pVT is always considered unstable.
  • Unstable Criteria: Absence of pulse, unresponsive, apneic.
  • Defibrillation:
    • Immediately defibrillate at 200 J.
    • Perform 2 minutes of CPR, then reassess rhythm and defibrillate at 300 J if VF/pVT persists.
    • Defibrillate at 360 J after subsequent cycles of CPR if no ROSC.
  • Drug Administration:
    • Epinephrine: 1 mg IV/IO after the second defibrillation. Repeat every 4 minutes (total 3 doses).
    • Amiodarone:
      • 300 mg IV/IO after the third defibrillation.
      • 150 mg IV/IO after the fifth defibrillation if VF/pVT persists.
    • Esmolol (Refractory VF/pVT):
      • Administer Esmolol 40 mg IV/IO bolus if VF/pVT persists after three doses of epinephrine and defibrillation.
      • Follow with Esmolol infusion: 60 mg IV/IO over 10 minutes (mix in 100 mL NS, administer at 1.5–2 drops/sec on 10-drop set).
      • Monitor for bradycardia or hypotension; discontinue if both occur.
  • Pediatric: Follow Handtevy™ guidelines for age-appropriate dosing.
  • Special Considerations: Use dual sequential defibrillation for refractory VF/pVT if a second defibrillator is available.

Asystole / Pulseless Electrical Activity (PEA)

  • Scene Safety: Ensure scene safety before approaching the patient.
  • Stable Criteria: Not applicable – Asystole/PEA is always unstable.
  • Unstable Criteria: No pulse, unresponsive.
  • CPR: Start immediately; avoid interruptions.
  • Drug Administration:
    • Epinephrine: 1 mg IV/IO as soon as possible. Repeat every 4 minutes (maximum of 3 doses).
  • Reversible Causes:
    • Hypoxia: Ensure airway and oxygenation.
    • Hypovolemia: Administer fluids (500 mL bolus of NS).
    • Consider other H’s and T’s (e.g., tension pneumothorax, tamponade).
  • Pediatric: Compression-to-ventilation ratio: 30:2 (1 rescuer) or 15:2 (2 rescuers). Use Handtevy™ for drug doses.

Symptomatic Bradycardia

  • Scene Safety: Ensure scene safety before approaching the patient.
  • Stable Criteria: HR ≥ 50 bpm, adequate perfusion, no significant symptoms (e.g., dizziness, hypotension).
  • Unstable Criteria: HR < 50 bpm with hypotension, chest pain, altered mental status, or signs of shock.
  • Drug Administration:
    • Atropine: 1 mg IV/IO every 4 minutes as needed (maximum dose: 3 mg).
    • Epinephrine (Push-Dose):
      • 1 mL of 1:100,000 every minute (10 mcg/min) for persistent symptoms after atropine or pacing.
      • Maximum dose: 30 mL (300 mcg).
  • Unstable Treatment:
    • Initiate pacing for Mobitz II or 3rd-degree block.
    • Sedate with Midazolam 2.5 mg IV/IO as needed for discomfort (maximum: 10 mg).
  • Pediatrics: Use Epinephrine or Atropine and initiate pacing if severe compromise persists. Refer to Handtevy™ for doses.

Wide Complex Tachycardia

  • Stable Criteria: No chest pain, normal mentation, SBP ≥ 90 mmHg, HR within normal range.
  • Unstable Criteria: Altered mental status, hypotension (SBP < 90 mmHg), chest pain, or severe symptoms.
  • Drug Administration:
    • Amiodarone: 150 mg IV/IO over 10 minutes for stable patients. May repeat once if needed.
    • Midazolam: 2.5 mg IV/IO as needed for sedation before cardioversion (max 10 mg).
  • Unstable Treatment:
    • Synchronized Cardioversion: Start at 100 J, escalate to 200 J, 300 J, and 360 J as needed.
  • Pediatric: Refer to Handtevy™ for age-appropriate dosing and energy selection.
  • Special Considerations:
    • Consider and rule out hyperkalemia.

Paroxysmal Supraventricular Tachycardia (PSVT)

  • Stable Criteria: HR ≤ 150 bpm, normal mentation, no significant symptoms, SBP ≥ 90 mmHg.
  • Unstable Criteria: HR > 150 bpm with hypotension (SBP < 90 mmHg), chest pain, altered mental status, or shock.
  • Drug Administration:
    • Adenosine: 6 mg rapid IV push, followed by 12 mg rapid IV push if needed.
    • Midazolam: 2.5 mg IV/IO as needed for sedation before cardioversion (max 10 mg).
  • Stable Treatment:
    • Modified Valsalva Maneuver: Perform twice unless conversion to SR or development of instability.
  • Unstable Treatment:
    • Synchronized Cardioversion: Start at 100 J, escalate to 200 J, 300 J, and 360 J as needed.
  • Pediatric: Refer to Handtevy™ for age-appropriate dosing and energy selection.

Atrial Fibrillation / Atrial Flutter

  • Scene Safety: Ensure scene safety before approaching the patient.
  • Stable Criteria: HR < 150 bpm, no chest pain, SBP ≥ 90 mmHg, normal mentation.
  • Unstable Criteria: HR ≥ 150 bpm with hypotension, altered mental status, chest pain, or signs of shock.
  • Drug Administration:
    • Diltiazem:
      • 0.25 mg/kg IV over 2 minutes for stable patients with HR > 150 bpm.
      • If no improvement after 10 minutes, repeat at 0.35 mg/kg IV over 2 minutes.
  • Unstable Treatment:
    • Fluids: 0.9% NS 500 mL bolus as needed.
    • Synchronized Cardioversion: Start at 100 J, escalate to 200 J, 300 J, and 360 J.
    • Sedation: Midazolam 2.5 mg IV/IO as needed for discomfort.

Acute Coronary Syndrome (ACS)

  • Scene Safety: Ensure scene safety before approaching the patient.
  • Stable Criteria: SBP ≥ 90 mmHg, no significant chest pain, adequate perfusion.
  • Unstable Criteria: Chest pain, diaphoresis, dyspnea, hypotension, or altered mentation.
  • Drug Administration:
    • Aspirin: 324 mg PO (chewed).
    • Nitroglycerin:
      • 0.4 mg SL every 5 minutes if SBP ≥ 90 mmHg.
      • Hold nitroglycerin if SBP < 90 mmHg or recent use of ED drugs (Viagra/Levitra within 24 hours, Cialis within 48 hours).
    • Fentanyl: 50-100 mcg IV/IO for pain unrelieved by nitroglycerin. Repeat every 10 minutes as needed, titrating to pain relief and SBP ≥ 90 mmHg.
  • Special Considerations:
    • Obtain a 12-lead EKG as soon as possible (within 5 minutes).
    • Issue a STEMI Alert for confirmed ST elevation in ≥2 contiguous leads.
    • Rapid transport to a STEMI center; transmit EKG en route if equipped.

Congestive Heart Failure (Pulmonary Edema)

  • Scene Safety: Ensure scene safety before approaching the patient.
  • Stable Criteria: Mild respiratory distress, SBP ≥ 90 mmHg, adequate oxygenation (SpO2 ≥ 94%).
  • Unstable Criteria: Severe respiratory distress, altered mental status, hypotension, or cyanosis.
  • Drug Administration:
    • Nitroglycerin:
      • SBP 90-160 mmHg: 0.4 mg SL every 5 minutes.
      • SBP > 160 mmHg: 0.8 mg SL every 5 minutes.
    • Furosemide: 20-40 mg IV/IO for severe pulmonary edema and volume overload (per OLMC if needed).
  • Treatment:
    • Apply CPAP for moderate-to-severe respiratory distress per Airway Protocol.
    • Monitor for hypotension after nitroglycerin and adjust as needed.
  • Special Considerations: Avoid nitroglycerin if SBP < 90 mmHg or recent ED drug use.

Stroke

  • Scene Safety: Ensure scene safety before approaching the patient.
  • Stable Criteria: Mild or resolving symptoms, SBP ≥ 90 mmHg, SpO2 ≥ 94%.
  • Unstable Criteria: Severe deficits (e.g., unilateral paralysis), altered mental status, airway compromise.
  • Drug Administration:
    • Dextrose: Administer if BG < 70 mg/dL (D10W or D50W IV push).
  • Treatment:
    • Use CPSS (Cincinnati Prehospital Stroke Scale) and RACE if CPSS is positive.
    • Document “Last Seen Normal” (LSN) time and place Stroke Alert Sticker.
    • Transport to an appropriate stroke center:
      • RACE ≥ 5: Comprehensive Stroke Center.
      • CPSS negative: Follow local transport policy.
  • Special Considerations: Do not delay transport for postictal patients; do not issue Stroke Alert for postictal state.

Suspected Intracranial Hemorrhage (ICH) Alert

  • Scene Safety: Ensure scene safety before approaching the patient.
  • Criteria for ICH Alert:
    • Recent anticoagulant use (e.g., Coumadin, Eliquis, Xarelto).
    • New neurological symptoms (e.g., severe headache, vertigo, ataxia, or unresponsiveness).
  • Stable Criteria: Alert and oriented, SBP ≥ 90 mmHg, mild symptoms.
  • Unstable Criteria: Altered mental status, severe neurological symptoms, or signs of herniation (e.g., unilateral pupillary dilation).
  • Treatment:
    • Elevate head of bed ≥ 45° unless contraindicated.
    • Manage BP per OLMC to prevent further hemorrhage.
    • Transport to an ICH Alert facility (e.g., Sarasota Memorial Main/Venice Campus).
    • Notify receiving facility via radio and document findings on the Stroke Alert Sticker.