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Treatment of Adolescent Antimuscarinic (Anticholinergic) Toxidrome

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Veza se sprema u međuspremnik
StatusVrbovanje
Sponzori
University of Colorado, Denver
Suradnici
American Academy of Clinical Toxicology

Ključne riječi

Sažetak

Overdose of xenobiotics (antihistamines, antipsychotics, or Jimson Weed) with resulting antimuscarinic toxidrome is a common scenario in medical toxicology. The result of antagonism of muscarinic receptors is a constellation of signs and symptoms (toxidrome): mydriasis, decreased sweat, decreased bowel sounds, agitation, delirium, hallucinations, urinary retention, tachycardia, flushed skin and seizures. Two treatment options are physostigmine or benzodiazepines.
Although the antimuscarinic toxidrome occurs commonly, physostigmine has been used sparingly despite evidence of safety and efficacy. To demonstrate the utility and safety of physostigmine, the investigators propose a randomized clinical trial of physostigmine compared to benzodiazepine for antimuscarinic toxicity.

Datumi

Posljednja provjera: 05/31/2020
Prvo podneseno: 03/09/2017
Predviđena prijava poslana: 03/19/2017
Prvo objavljeno: 03/26/2017
Posljednje ažuriranje poslano: 06/01/2020
Posljednje ažuriranje objavljeno: 06/03/2020
Stvarni datum početka studija: 03/29/2017
Procijenjeni datum primarnog završetka: 07/30/2020
Procijenjeni datum završetka studije: 07/30/2020

Stanje ili bolest

Anticholinergics Toxicity

Intervencija / liječenje

Drug: Physostigmine

Drug: Lorazepam

Faza

Faza 4

Grupe ruku

RukaIntervencija / liječenje
Experimental: Physostigmine
Physostigmine 0.02 mg/kg IV bolus (max of 2 mg), which can be repeated at 10 minutes, followed by a 0.02 mg/kg/hr (max of 2 mg/hr) infusion for 4 hours.
Drug: Physostigmine
Administration of physostigmine bolus followed by an infusion
Experimental: Lorazepam
Lorazepam 0.05 mg/kg IV bolus (max 2 mg), which can be repeated at 10 minutes if inadequate patient response, followed by a Normal Saline infusion for 4 hours.
Drug: Lorazepam
Administration of lorazepam bolus followed by normal saline infusion

Kriterij prihvatljivosti

Dobni uvjeti za studiranje 10 Years Do 10 Years
Spolovi koji ispunjavaju uvjete za studijAll
Prihvaća zdrave volontereDa
Kriteriji

Inclusion Criteria:

- Age >=10 and < 18 years

- Present to the Emergency Department or Intensive Care Unit for an antimuscarinic toxidrome from either a pharmaceutical agent such as antihistamine overdose, or natural toxins or products such as Datura stramonium

- Antimuscarinic toxidrome will be defined with at least one central nervous system agitation effect (agitation, delirium, visual hallucinations, mumbling incomprehensible speech), and at least 2 peripheral nervous system adverse effect (mydriasis, dry mucus membranes, dry axillae, tachycardia, decreased bowel sounds).

- Patients will also be required to have a RASS score of +2 to +4 on initial assessment.

Exclusion Criteria:

- History of seizures or seizure during acute clinical course

- History of asthma or wheezing during clinical course Bradycardia (Heart Rate <60)

- Concomitant use of atropine or choline ester or depolarizing neuromuscular blocker during present illness and hospital course

- Diabetes gangrene, known intestinal obstruction or urogenital tract, vagotonic state

- QRS interval > 120 ms on electrocardiogram

- Known to be pregnant at the time of enrollment

- Known ward of the state

Ishod

Primarne mjere ishoda

1. Comparison of RASS score between physostigmine and lorazepam. [Before and after each bolus, and hourly for 5 hours]

Determine the effectiveness of physostigmine as compared with lorazepam for control of antimuscarinic agitation. Richmond Agitation Sedation Scores (RASS) will be compared throughout treatment protocol.

2. Comparison of the effectiveness in control of delirium between physostigmine and lorazepam. [Before and after each bolus, and hourly for 5 hours]

Determine the effectiveness of physostigmine as compared with lorazepam in the reversal of antimuscarinic delirium. Confusion Assessment Method for the ICU (CAM-ICU) scores will be evaluated throughout the study.

Sekundarne mjere ishoda

1. Safety and effectiveness of Physostigmine infusion in the setting of antimuscarinic toxidrome. [Before and after each bolus, and hourly for 4 hours]

Evaluation of clinical antimuscarinic symptoms, along with presence of any adverse effects, during the infusion to report tolerability, safety profile, and effectiveness of the infusion.

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