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Rapid Sequence/ Failed Intubation - Additional Information

Additional Information

Equipment Checklist
ETT Size
LMA Sizes
Induction Agents
Neuromuscular Blocker/Paralytic
Initial Ventilator Settings


Equipment Checklist

S – Suction & Staff  B – BVM / ETT Blades 
T – Tube (Endotracheal 3 x sizes)  A – Airway (oro / naso-pharyngeal) 
O – Oxygen (Set Ventilator)  R – Rescue devices (LMA/ Bougie) 
P – Pharmacology (Induction & Paralytic &  Resus drugs) S – Surgical airway (Blade / Cricothyroidotomy kit)
I – IV Access   
C – Connect Monitors  

ETT Size

Patient Size ETT Size ETT Depth (oral)
Female / Small Male  7.0  19 – 21 cm 
Large Female / Male  7.5 – 8.0  21 – 23 cm
Large Male  8.5 – 9.0  23 – 25 cm 
Child  Age / 4 + 4 (uncuffed)
Age / 4 + 3.5 (cuffed) 
3 x ETT size in cm (approx) 

LMA Sizes

 Patient Weight  LMA Size  Cuff Volume 
< 5 kg  1  4 ml 
5 – 10 kg 1.5  7 ml 
10 – 20 kg  2  10 ml 
20 – 30 kg  2.5  14 ml 
30 – 50 kg  3  20 ml 
50 – 70 kg  4  30 ml 
70 - 100 kg  5  40 ml 
>100 kg  5 / 6  50 ml 

Induction Agents

  Etomidate Ketamine Propofol Midazolam Thiopentone
DOSE 0.3 mg/kg (0.2-0.4 mg/kg) 2-4 mg/kg 2-2.5 mg/kg 0.2-0.3 mg/kg 3-5 mg/kg
70 kg 20 mg 140-210 mg 140 mg 15-20 mg 210 mg
Caution  SEPSIS Seizures Hypotension
Elderly
CVS Unstable
Use only if nil other agents available  Hypotension
Limited availability
Indicated  CVS Unstable CVS Unstable
Asthma
Head Injury
    Seizures

Neuromuscular Blocker/Paralytic

Drug  Succinylcholine  Rocuronium 
Dose  1.5- 2 mg/kg  1 – 1.2 mg/kg 
70 kg patient  100-150 mg  70 – 85 mg 
Onset of Action  30 – 60 seconds  60 – 120 seconds 
Duration of Action 5 – 10 minutes 30 – 45 minutes 
Caution & Contra-indications  >24 hrs post burns
Hyperkalaemia
Malignant Hyperthermia 
Caution - difficult airway expected

Initial Ventilator Settings

  Normal Lungs Bronchospasm COPD/Asthma ARDS/Pneumonia
Mode Assist Control / SIMV Assist Control / SIMV Assist Control / SIMV
Resp Rate (bpm) 12-14 (10-20) 10 (8 – 12) 18 (16-24)
Vt (ml/kg) 6 ml/kg (6-10) 6 ml/kg (6-8) 6 ml/kg (6-8)
Plateau airway pressure (P Plat) ; Pressure limit < 30 cmH2O < 30 cmH2O < 30 cmH2O
PEEP 3 - 5 0 - 5 8 - 15
I:E Ratio 1:2 1:3 to 1:5 1:2
FiO2 1 (100%) wean to < 0.6 (60%) asap 0.4 (40%) titrate to requirement 1 (100%) wean to < 0.6 (60%) asap

Rapid Sequence Intubation, Emergency Medicine: Western Cape; Drafted Nov 2014. Review Nov 2016

Drugs mentioned

NeoHealth® ID 17549 · updated 1/19/2022