Related Experiment Video
Updated: Jun 17, 2026
08:49
Assessing Changes in Volatile General Anesthetic Sensitivity of Mice after Local or Systemic Pharmacological Intervention
Published on: October 16, 2013
Some Recent Work on Barbiturates: (Section of Anæsthetics)
Proceedings of the Royal Society of Medicine
|December 9, 2009
Summary
Even small doses of barbiturates can cause toxicity, particularly when liver damage is present or induced. Other factors like cold, hemorrhage, and sepsis also increase barbiturate toxicity risks.
Area of Science:
- Pharmacology
- Toxicology
- Hepatology
Background:
- Barbiturates are medications with potential toxic effects.
- Liver damage can alter the body's response to barbiturates.
- The interplay between barbiturate administration and liver injury requires further investigation.
Purpose of the Study:
- To investigate the toxic effects of barbiturates.
- To identify factors that exacerbate barbiturate toxicity.
- To examine the relationship between liver damage and barbiturate-induced toxicity.
Main Methods:
- Review of clinical and post-mortem data.
- Experimental studies on barbiturate toxicity.
- Analysis of contributing factors such as cold, hemorrhage, fasting, sepsis, abdominal compression, and castration.
Main Results:
- Barbiturates can cause liver damage, including hepatitis.
- Pre-existing or induced liver damage significantly increases barbiturate toxicity.
- Early stages of liver injury can also lead to barbiturate toxicity.
- Factors such as cold, hemorrhage, fasting, sepsis, abdominal compression, and castration appear to influence barbiturate toxicity.
Conclusions:
- Barbiturate toxicity is a concern even at low doses, especially in individuals with liver damage.
- Liver injury plays a critical role in the manifestation of barbiturate toxicity.
- Several external and physiological factors can potentiate the toxic effects of barbiturates.
More Related Videos
08:16Optogenetic Activation of Afferent Pathways in Brain Slices and Modulation of Responses by Volatile Anesthetics
Published on: July 23, 2020
14:52Recording Brain Electromagnetic Activity During the Administration of the Gaseous Anesthetic Agents Xenon and Nitrous Oxide in Healthy Volunteers
Published on: January 13, 2018
Related Concept Videos
01:20Sedatives and Hypnotics Drugs: Barbiturates
Sedatives and hypnotics encompass a drug class that acts on the central nervous system (CNS) to alleviate anxiety, promote relaxation and induce sleep.These drugs function by amplifying the actions of the neurotransmitter γ-aminobutyric acid (GABA), resulting in reduced neuronal activity. Barbiturates, a subset of sedatives and hypnotics first synthesized in the late 1800s, are categorized into ultra-short, short, intermediate, and long-acting groups based on their duration of effect. A key...
01:24Parenteral Anesthetics: Overview
Intravenous anesthetics are drugs administered parenterally to induce anesthesia or sedation. Propofol is a widely used agent formulated as a 1% emulsion in soybean oil, glycerol, and egg phosphatide. It induces rapid anesthesia primarily due to its rapid distribution from the bloodstream to target tissues and is metabolized in the liver. However, it can cause significant pain on injection and hypertriglyceridemia. Fospropofol, a water-based prodrug of propofol, lacks these adverse effects.
01:20Inhalational Anesthetics: Overview
Inhalation anesthetics are drugs that induce general anesthesia upon inhalation. They work by increasing the sensitivity of GABAA receptors or inhibiting NMDA receptors, leading to a decrease in central nervous system activity. The depth of anesthesia can be rapidly adjusted by changing the concentration of the inhaled gas. Some common examples of inhalational anesthetics include volatile liquids like isoflurane, desflurane, sevoflurane and gases like xenon and nitrous oxide. Isoflurane, a...
01:14CNS Depressants: Barbiturates and Benzodiazepines
CNS depressants include drugs from the category of barbiturates and benzodiazepines. They are valuable medications for managing anxiety disorders and insomnia. Barbiturates, once used to induce and maintain sleep, have been replaced mainly by benzodiazepines due to barbiturate's toxicity, tolerance, and overdose risks. They interact with GABAA receptors, leading to sedation at low doses and potentially coma and death at higher doses. Phenobarbital, a long-acting barbiturate, possesses...
01:30Local Anesthetics: Chemistry and Structure-Activity Relationship
Local anesthetics (LAs) are drugs that induce a temporary loss of sensation in a limited body area, preventing pain. Cocaine was the first local anesthetic discovered in the late 19th century. Cocaine is a benzoic acid ester obtained from the leaves of coca shrubs and was often used for its psychotropic effects. Cocaine was first isolated in 1860 by Albert Niemann. Sigmund Freud studied the physiological actions of cocaine. Carl Koller later introduced it into clinical practice in 1884 as a...
01:24General Anesthesia: Overview
Anesthesia is a medical procedure that uses drugs for CNS suppression to enable painless surgeries and procedures. The selection of anesthetics is influenced by their pharmacokinetic properties, side effects, and patient characteristics. Various types of anesthesia include general, local, regional, spinal, and inhalational.
General anesthesia induces unconsciousness in the whole body, while the others target specific areas or sensations. It is administered to minimize adverse effects, maintain...
General anesthesia induces unconsciousness in the whole body, while the others target specific areas or sensations. It is administered to minimize adverse effects, maintain...