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Related Concept Videos

Toxidromes: Clinical Features01:30

Toxidromes: Clinical Features

Toxidromes are specific patterns of symptoms resulting from toxic substance exposure. They help in the identification and treatment of poisoning. The symptoms of each toxidrome group indicate poisoning by a certain class of chemicals or drugs.1. Sympathomimetic: Stimulates the sympathetic nervous system. Symptoms include agitation, increased heart rate (HR), blood pressure (BP), respiratory rate (RR), temperature, and pupil size. Drugs like cocaine and amphetamines, along with tremors and...
Antidepressant Drugs: Tricyclics, SSRIs, and SNRIs01:28

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Tricyclic Antidepressants (TCAs), including Desipramine (Norpramin), Imipramine (Tofranil), Clomipramine (Anafranil), and Amitriptyline (Elavil), inhibit serotonin and norepinephrine reuptake and also block other receptors. They are used for depression, pain conditions, and insomnia. Common adverse effects include anticholinergic effects, sedation, orthostatic hypotension, and weight gain. They have a narrow therapeutic window and so require plasma-level monitoring. Abrupt discontinuation can...
Acute Respiratory Failure-III01:30

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Hypercapnic respiratory failure, also known as Type 2 or ventilatory respiratory failure, is a severe condition characterized by the body's inability to effectively remove carbon dioxide (CO2) from the bloodstream. It leads to an arterial CO2 pressure (PaCO2) exceeding 45 mmHg and a blood pH above 7.35. This situation indicates that the body's ventilatory demand, or the ventilation needed to maintain normal PaCO2 levels, surpasses its supply or the maximum gas flow achievable without causing...
Acute Respiratory Failure-V01:29

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The treatment for acute respiratory failure varies based on factors like the underlying cause, overall health, and severity. A collaborative healthcare team is essential for early detection, often through arterial blood gas analysis. Identifying the cause is the primary goal, with treatment strategies adjusted for ventilation/perfusion (V/Q) mismatch, shunting, or diffusion impairment.
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Surfactant Depletion Combined with Injurious Ventilation Results in a Reproducible Model of the Acute Respiratory Distress Syndrome (ARDS)
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Tricyclic Antidepressant Overdose causing Acute Respiratory Distress Syndrome.

Tom Heaps1, Sarah Hoye, Ruby Roy

  • 1ST3 in Acute Medicine Leeds General Infirmary Leeds, LS1 3EK.

Acute Medicine
|May 24, 2011
PubMed
Summary

Tricyclic antidepressant overdose can lead to acute respiratory distress syndrome (ARDS). This study highlights two cases and reviews existing literature, advocating for increased awareness and database inclusion of these severe respiratory complications.

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Last Updated: Jun 1, 2026

Surfactant Depletion Combined with Injurious Ventilation Results in a Reproducible Model of the Acute Respiratory Distress Syndrome (ARDS)
06:22

Surfactant Depletion Combined with Injurious Ventilation Results in a Reproducible Model of the Acute Respiratory Distress Syndrome (ARDS)

Published on: April 7, 2021

Halogenated Agent Delivery in Porcine Model of Acute Respiratory Distress Syndrome via an Intensive Care Unit Type Device
09:36

Halogenated Agent Delivery in Porcine Model of Acute Respiratory Distress Syndrome via an Intensive Care Unit Type Device

Published on: September 24, 2020

Area of Science:

  • Toxicology
  • Critical Care Medicine
  • Pulmonology

Background:

  • Tricyclic antidepressants (TCAs) are commonly prescribed but carry risks in overdose.
  • Acute respiratory distress syndrome (ARDS) is a severe lung injury with high mortality.
  • The association between TCA overdose and ARDS is not widely recognized.

Purpose of the Study:

  • To report two cases of TCA overdose complicated by ARDS.
  • To review the existing literature on TCAs and ARDS.
  • To advocate for greater awareness and inclusion of these complications in toxicology databases.

Main Methods:

  • Case report of two patients with TCA overdose and subsequent ARDS.
  • Literature review of studies investigating TCA overdose and respiratory complications.

Main Results:

  • Two patients developed ARDS following TCA overdose.
  • Literature review identified a potential association between TCAs and ARDS, though underreported.

Conclusions:

  • TCA overdose can precipitate ARDS, a serious complication.
  • Increased awareness and reporting of respiratory complications in TCA overdose are necessary.
  • Inclusion in national toxicology databases would improve understanding and management.