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Analgesia, Sedation and Delirium
Overview
55
Astronomy
6th Grade
10/19/2013

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Term
short term inadequate sedation and analgesia
Definition
increased stress response (increased O2 needs, persistent catabolism, immunosuppression)
Term
long term inadequate sedation and analgesia
Definition
PTSD, traumatic flashbacks, depression
Term
oversedation
Definition
increased duration of mechanical ventilation nand longer ICU stay; increased risk of DVTs and VAP; Inability to communicate
Term
Used in ventilated patients for pain evaluation
Definition
Critical-Care Pain Observation Tool (CPOT) and Behavior Pain Scale (BPS)
Term
mainstay of pharmacologic pain management in the ICU
Definition
Opioids
Term
desirable properties of an opioid for ICU use
Definition
rapid onset, easy Titratable, lack active metabolites, readily available
Term
continuous IV infusion or Patient Controlled Analgesia (PCA)
Definition
morphine, hydromorphone, fentanyl
Term
Intermittent dosing
Definition
morphine, hydromorphone, oxycodone
Term
hydrophilic, prolonged duration of action, accumulation of active metabolites, promotion of histamine release causing vasodilation and hypotension
Definition
morphine
Term
morphine use
Definition
not recommended in patients with renal dysfunction or hemodynamic instability
Term
morphine duration
Definition
2-3 hours
Term
ten times more potent than morphine, does not induce histamine release, inactive metabolites
Definition
hydromorphone
Term
hydromorphone use
Definition
safe in patients with hemodynamic instability or renal dysfunction
Term
highly lipophilic, fast acting -->rapid titration; short duration of action; no active metabolite, safe in renal dysfunction
Definition
Fentanyl
Term
Fentanyl use
Definition
little effect on cardiovascular system, can be used in hemodynamically unstable patients
Term
tachyphylaxis in fentanyl
Definition
occurs in chronic exposure, increase dose or switch to another agent
Term
respiratory depression
Definition
centrally mediated, dose dependent decrease in both respiratory rate and tidal volume, clinically significant hypoxemia is uncommon--- caution in chronic hypercapnic patients **
Term
analgesia CV effects
Definition
mild decrease in blood pressure and heart rate, usually well tolerated (except in patients with hypovolemia or heart failure)
Term
analgesia bowel motility
Definition
reduced peristalsis leading to impaired tolerance to enteral feedings and ileus
Term
opioid sparing, no effect on respiration; inhibits platelet aggregation and renal prostaglandin synthesis
Definition
Ketorolac (available PO and IV)
Term
opioid sparing, no effect on respiration; inhibits platelet aggregation and renal prostaglandin synthesis
Definition
Ketorolac (available PO and IV)
Term
gabapentin and carbamazepine are preferred in combination with opioids
Definition
provides synergistic effects, monitor sedation, enteral route only
Term
Sedation Guidelines
Definition
Prefer non-benzodiazepine over benzodiazepines: decreased delirium, decreased LOS, decreased mechanical ventilation time
Term
tool for assessing sedation
Definition
RASS
Term
global CNS depression through GABA activation and NMDA receptor blockade
Definition
Propofol
Term
Propofol use
Definition
caution in patients with hypovolemic hypotension, seizure disorders and increased intracranial pressure
Term
global CNS depression through GABA activation and NMDA receptor blockade
Definition
Propofol
Term
Propofol use
Definition
caution in patients with hypovolemic hypotension, seizure disorders and increased intracranial pressure
Term
frequently following a bolus dose of propofol and more pronounced in elderly, heart failure and hypovolemic patients
Definition
hypotension
Term
Propofol suspension
Definition
in a 10% lipid emulsion (check triglycerides every 72 hours)
Term
Propofol Related Infusion Syndrome (PRIS)
Definition
rare but lethal reaction; associated with prolonged high dose infusions, high mortality even when the drug is discontinued
Term
characterized by: abrupt onset of dysrhythmia, metabolic acidosis, hyperkalemia, hyperlipidemia, rhabdomyolysis or myoglobinuria, renal failure
Definition
Propofol Related Infusion Syndrome (PRIS)
Term
highly selective alpha1- adrenergic agonist (8x more selective than clonidine)
Definition
Dexmedetomidine (Precedex)
Term
Dexmedetomidine (Precedex)
Definition
sedation without respiratory depression; great for sedation during weaning from mechanical ventilation
Term
Dexmedetomidine-- short duration of action (~60 minutes)
Definition
due to its "calming" effect, used commonly for agitation in the ICU; manufacturer recommends against use >24 hours
Term
withdrawal of Dexmedetomidine
Definition
hypertension, nervousness, agitation and headache; should not be stopped abruptly
Term
adverse effects of dexmedetomidine
Definition
hypotension, bradycardia, sympathetic rebound
Term
all agents are lipid soluble thus accumulate in the CNS with continued use; special caution in patients with renal failure
Definition
Benzodiazepines
Term
Benzodiazepines
Definition
Midazolam, Lorazepam, Diazepam
Term
Benzodiazepines Adverse Effects
Definition
Respiratory depression, hypotension, excessive sedation
Term
used in IV solutions of lorazepam and diazepam to enhance drug solubility
Definition
Propylene glycol
Term
Propylene glycol symptoms of toxicity
Definition
agitation, metabolic acidosis, hypotension and seizures
Term
benzodiazepine withdrawal
Definition
agitation, disorientation, hallucination and seizure
Term
benzodiazepine withdrawal
Definition
agitation, disorientation, hallucination and seizure
Term
prolonged duration of action of benzos due to inhibition of metabolism
Definition
erythromycin, fluconazole, diltiazem, verapamil and omeprazole
Term
antagonism of sedative effects
Definition
theophylline and aminophylline
Term
agitation and restlessness
Definition
hyperactive delirium
Term
withdrawal, flat effect, apathy,, lethargy and decreased responsiveness
Definition
hypoactive delirium
Term
fluctuations between hyperactive and hypoactive states
Definition
mixed delirium
Term
can cause delirium
Definition
anticholinergics, corticosteroids, opiates, benzodiazepines
Term
delirium assessment tools
Definition
ICDSC, CAM-ICU
Term
recommended for acute agitation; avoid in patients with underlying arrhythmias (can lead to torsades), avoid in patients with Parkinson's disease
Definition
Haloperidol
Term
no strong evidence supporting use in delirium; but can decrease EPS and QT prolongation incidence, fewer hypotension/orthostatic effects, unlikely to cause laryngeal dystonia
Definition
Atypical Antipsychotics
Term
Midazolam +/- fentanyl vs. dexmedetomidine +/- fentanyl
Definition
SEDCOM study
Term
dexmedetomidine vs lorazepam
Definition
MENDS study
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