Ketamine
Contraindications
1) <3-6 mo old
2) Increased ICP
3) Glaucoma/acute globe (increased IOP)
4) CAD, HTN, CHF (? >40 yr old )
5) URI or active asthma (unless for induction)
6) Procedures stimulating gag
7) Porphyria/thyroid (theoretical)
8) ?Increased intra-abd pressure
Preparation
NPO (>3hrs = rec; no evidence of need)
Consent
Monitor
BVM/O2 mask
Suction
Ketamine (drawn up)
Atropine (ready) [0.01 mg/kg IVP; min 0.1mg, max 0.5mg]
Versed (ready) [0.05mg/kg IVP]
"Happy Place"
Conscious Sedation
Give initial bolus 2 mg/kg SLOW IV* (over 1 min)
Nystagmus = effect
?maximal dose = 6mg/kg at one time
May repeat boluses at 1 mg/kg increments
- prefered by most over IM 4 mg/kg
-O2 ready vs on (no data)
-Most don't give atropine prophy (some <5yrs; no evidence)
-Most don't give versed prophy (evidence against)
Side Effects
1) Transient rash (common)
-not harmful
2) Hypersalvation (1.7%)
-may give atropine
-suction sides only
3) Laryngospasm (<0.4%)
-not dose-dependent
-assoc with fast IVP
-assoc with procedures stimulating gag
4) Transient apnea (<0.3%)
-around 2min after IVP
-normally BVM needed only
5) Emergence Rx (~2% mod-severe)
-give benzo
6) Emesis/persistent ataxia
-typically during recovery
-no cases of aspiration (airway reflex maintained)
-no driving!
Overdose
Prolonged sedation --> full recovery
Source
3/06 DONALDSON (Adapted from Young)
