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General Anesthesia: Overview

General 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...

Parenteral Anesthetics: Overview

Parenteral 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.

Local Anesthetics: Adverse Effects

Local Anesthetics: Adverse Effects

While local anesthetics are generally safe and well-tolerated, they can occasionally cause adverse effects that vary in severity. Local anesthetics can induce toxicity at two distinct levels. They can either produce local effects through direct contact with the neural elements or be absorbed into the bloodstream from the injection site, leading to systemic effects.
Once absorbed into the systemic circulation, local anesthetics can affect the organs that depend on the functioning of sodium...

Stages of General Anesthesia

Stages of General Anesthesia

Various sedation levels offer significant advantages in facilitating procedural interventions for patients undergoing medical or invasive surgical procedures. These levels span from anxiolysis to general anesthesia, providing a spectrum of sedative effects to cater to specific patient needs. Anxiolysis reduces anxiety and is achieved through minimal sedation, enabling patients to remain awake and responsive while feeling more at ease during the procedure. This level can benefit minor...

Inhalational Anesthetics: Overview

Inhalational 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...

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Related Experiment Video

Updated: Jun 3, 2026

Behavioral Characterization of an Angelman Syndrome Mouse Model

Behavioral Characterization of an Angelman Syndrome Mouse Model

Published on: October 20, 2023

[Anesthesia and Angelman syndrome].

W Witte¹, C Nobel, J Hilpert

¹Klinik für Anästhesiologie und operative Intensivmedizin, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, Berlin, Germany. wilfried.witte@charite.de

Der Anaesthesist

|March 23, 2011

Summary

This summary is machine-generated.

Angelman syndrome (AS) anesthesia management requires careful consideration of patient communication, pain perception, and potential complications like bradycardia. While guidelines can be formulated, the safest anesthetic method for AS patients remains undetermined.

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Area of Science:

Neuroscience and Genetics: Investigating Angelman syndrome (AS), a rare neurodevelopmental disorder linked to genetic imprinting defects in the 15q11-q13 chromosomal region.

Context:

AS is characterized by ataxia, seizures, severe learning difficulties, and distinct facial features, impacting anesthetic considerations.
Previous anesthesiology case reports are limited; this study contrasts published data with a larger series of 15 anesthesia cases in AS patients.

Purpose:

To analyze anesthetic management in Angelman syndrome patients undergoing various surgical procedures.
To compare outcomes from a Berlin clinic's routine operations with existing published case reports.

Summary:

Anesthetic management in AS patients necessitates tailored approaches, considering communication challenges, pain perception despite happy disposition, and risk of vagal hypertonia-induced bradycardia.
Recommendations include avoiding anticholinergic reversal agents, careful consideration of laparoscopy, and potential use of peripheral regional anesthesia for scoliosis surgery.
While balanced and total intravenous anesthesia are feasible, drug effect duration must be managed; ketamine use requires co-administration of sedatives to mitigate side effects.

Impact:

The findings contribute to formulating guidelines for anesthesia administration in AS patients, improving perioperative care.
Highlights the need for individualized anesthetic plans and careful preoperative evaluation, especially regarding facial dysmorphia and potential intubation difficulties.
Emphasizes vigilance for life-threatening complications such as bradycardia, even in patients without prior severe episodes.