Procedural Sedation Pharmacology Deb Updegraff R.N., P.N.P, C.N.S. Clinical Nurse Specialist LPCH...
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Transcript of Procedural Sedation Pharmacology Deb Updegraff R.N., P.N.P, C.N.S. Clinical Nurse Specialist LPCH...
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Procedural Sedation Pharmacology
Deb Updegraff R.N., P.N.P, C.N.S.Clinical Nurse SpecialistLPCH Pediatric Intensive Care Unit
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Procedural Sedation
The phrase “procedural sedation” refers to techniques of managing a patient’s pain and anxiety to facilitate appropriate medical care in a safe, effective and humane fashion.
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Age
Concurrent disease states
Concurrent drug therapy
Sedation Pharmacolgy
Individual responses are dependant on:
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Chloral Hydrate
Hypnotic-“Short term sedative and hypnotic given priorto nonpainful procedures
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Chloral Hydrate
Usually given to Outpatients due to relative low risk profile. For non-painful procedures only.
EEGs
MRI/CT Scans
Echocardiograms
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Chloral Hydrate
PO/Rectal
Dose: 50mg/kg give 30-60 minutes prior to procedure.
Can repeat x1 25mg/kg
Not to exceed 100mg/kg in a 24 hour period
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Chloral Hydrate
Expect a moderate decrease in heart rate and blood pressure in patients ASA I-II
For infants < 6 months there is ↑ risk for apnea and hypoxia.
Age a limiting factor. High failure rate in children > 4 years.
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Pentobarbital : Nembutal®
Barbituate- Non elective central nervous system depressants
primarily used as Hypnotic sedative for non painful procedures.
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Nembutal
PO/Rectal/IM/IV Dose for procedural sedation:
4mg/kg , may repeat 2mg/kg, max 100mg
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Nembutal: precautions
Rapid IV injection ie, can cause respiratory depression, apnea, laryngospasm, bronchospasm and hypotension
Recommended to infuse IV dose over 10-30 minutes.
Can significantly decrease cardiac output and should be avoided with CHF
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Benzodiazepines
Midazolam- Versed® Lorazepam - Ativan®
Induce anterograde amnesia (not retrograde)May have some opioid sparing effect by ↓ anticipatory pain response
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Midazolam -® Versed
Most commonly used Benzo for preoperative and pre-procedural sedation.
Undergoes hepatic metabolism and renal excretion and prolonged effects seen with dysfunction of either system
Sedative, amnestic and anxiolytic with no analgesic properties
Commonly used with an opioid analgesic such as Fentanly®
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Versed®
Onset in 1 to 2 minutes Duration 30 min Caution for respiratory depression
and hypotension
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Dosage for children having procedures:
PO; 0.5 mg/kg/dose may repeat once with 0.25mg/kg/dose. Max dose: 20mg.
IV: 0.05-0.1 mg/kg dose. May repeat over several minutes to a max dose of 0.1-0.2 mg/kg.
Intranasal: 0.2-0.3 mg/kg. May repeat in 15 min
Adults: 0.5 mg to 2mg slow push over at least 2 min. Usual dose needed is 2.5 – 5 mg . > 5mg generally not needed.
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Fentanyl- Sublimaze®
Used in combination with Versed for many years due to rapid onset and effectiveness
Synthetic opioid Metabolized by the liver Short duration of effect Pure analgesic (should not be
used alone) Least histamine release of opiates
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Caution:
Chest rigidity with rapid infusion and hypotension
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Fentanyl
Dosage for Pediatrics:
-IM or IV 0.5-1.0 mcg/kg/dose
-onset 1-2 min
-lasts 30 minutes
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Etomidate
Classified as a General Anesthetic
Ultra short acting nonbarbituratehypnotic used for the induction of Anesthesia
Used for Sedation in Adults0.2mg/kg IV given over 30-60 seconds
Onset <1minutes Duration 3-5 minutes
Limited data, Action too short for some procedures
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Ketamine-Ketalar®
Classified as a general anesthetic Rapid acting dissociative anesthetic
that produces a profound analgesic effect
Gaining favor in children due to reliable effects and strong safety profile
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Ketamine
When patients are on ketamine they may appear awake. Eyes may remain open, they may have nystagmus.
Ketamine is a potent phencyclidine deriviative
Produces potent analgesia and rapid sedation while it preservesrespiratory drive and airway protective reflexes
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Ketamine
IV 1-2 mg/kg/dose
-Onset is 1 minute
-Duration 10-20 minutes
IM 2-4 mg
-onset 5 minutes
-duration 15-45 minutes
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Ketamine Caution:
Nystagmus can occur alongwith hypersecretions, agitationDelirium, vomiting , myoclonus and laryngospasm
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Propofol-
Classified as a general anesthetic
-Lower doses
sedation
hypnosis Anmestic, anxiolytic, antiemetic, and
antiepileptic properties No Analgesic effects
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Propofol
Dosing 2.5 -3.5 mg/kg/ dose over 20-30 seconds
Onset 10-30 seconds Duration 10-20 minutes For prolonged procedures may
require continuous infusion 125-300mcg/kg/minute. (smaller children may require smaller infusion rates.
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Propofol Caution
Profound Respiratory Depression Profound Irreversible bradycardia Profound Hypotension
Avoid with Soy or Egg allergies
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