Appendices Flashcards
Anaphylaxis guidelines:
Asthma grading - Moderate:
- Increasing Sx
- PEF > 50-75% best or predicted
- No fts. of acute severe asthma
Asthma grading - Acute severe asthma:
Any one of:
- PEF 33-50% best or predicted
- RR ≥ 25 min
- HR≥ 110 min
- Inability to complete sentences in 1 breath
Asthma grading - Life threatening asthma:
Any one of the following in a pt with severe asthma:
Clinical signs:
1. Altered conscious level
2. Arrhythmia
3. Cyanosis
4. Exhaustion
5. Hypotension
6. Poor expiratory effort
7. Silent chest
Measurements:
1. PEF < 33% best or predicted
2. SpO < 92%
3. PaO < 8 kPa
4. “normal’ PaCO2 (4.6-6.0 kPa)
Asthma grading - Near fatal asthma:
- Raised PaCO2
- &/or requiring mechanical ventilation
- With raised inflation pressures
Adrenaline - Shockable (VF/pVT) - how to dose:
- Dose: 1 mg (10 mL 1:10 000 or 1 mL 1:1000) IV
- Given after the 3rd shock once compressions have resumed
- Repeated every 3-5 min (alternate cycles)
- Given without interrupting compressions
Adrenaline - Non-Shockable (PEA/Asystole) - how to dose:
- Dose: 1 mg (10 mL 1:10 000 or 1 mL 1:1000) IV
- Given as soon as IV access achieved
- Repeated every 3-5 min (alternate cycles)
- Given without interrupting compressions
What are the alpha-adrenergic effects of ADR?
- Systemic vasoconstriction
- Increases coronary perfusion pressures
- Increases cerebral perfusion pressures
What are the beta-adrenergic effects of ADR?
- Inotropic
- Chronotropic
- May increase coronary blood flow
- May increase cerebral blood flow
Amiodarone - Shockable (VF/pVT) - how to dose:
- Dose: 300 mg bolus IV diluted in 5% dextrose (or other suitable solvent) to a volume of 20 ml
- Given during compressions after 3 defibrillation attempts
- Further dose of 150 mg if VF/pVT persists after 5 defibrillation attempts
Amiodarone - Non-Shockable (PEA/Asystole) - how to dose:
- Not indicated
MOA of amiodarone:
- Membrane-stabilising drug
- Increases the duration of the action potential & refractory period in atrial & ventricular myocardium
- Atrioventricular conduction is slowed
What to flush amiodarone with?
- 0.9% sodium chloride
- Or 5% dextrose