Review article: Neurotoxicity of anesthetic drugs in the developing brain

Greg Stratmann1

  • 1Department of Anesthesia and Perioperative Care, University of California San Francisco, Box 0464, Room U286, 513 Parnassus Ave., San Francisco, CA 94143, USA. stratman@anesthesia.ucsf.edu

Anesthesia and Analgesia
|October 4, 2011
PubMed

Insights

Pediatric anesthesia may harm infant brain development, causing neurocognitive decline. Research is ongoing to understand risks, mechanisms, and safe anesthetic practices for children.

Area of Science:

  • Neuroscience
  • Anesthesiology
  • Developmental Pediatrics

Background:

  • Infantile anesthesia has been shown to cause neurocognitive decline in animal models, raising concerns for human pediatric populations.
  • The anesthesia community and regulatory bodies are actively investigating the potential long-term cognitive effects of anesthesia in children.

Purpose of the Study:

  • To review current knowledge regarding the risks of pediatric anesthesia to long-term cognitive function.
  • To explore proposed mechanisms underlying anesthesia-induced cognitive decline and potential treatment strategies.
  • To discuss findings from comparative animal studies on anesthetic neurotoxicity.

Main Methods:

  • Review of existing scientific literature on anesthesia and neurodevelopmental outcomes.
  • Analysis of proposed mechanisms of anesthesia-induced neurotoxicity.
  • Summary of findings from animal studies comparing different anesthetic agents and durations.

Main Results:

  • Animal studies indicate that anesthesia can induce neuronal damage and progressive neurocognitive deficits in infantile subjects.
  • Several mechanisms for anesthesia-induced cognitive decline have been proposed, requiring further investigation.
  • Early comparative animal studies are beginning to identify potential differences in neurotoxicity among anesthetic agents.

Conclusions:

  • Evidence suggests a potential risk of anesthesia-induced cognitive decline in humans, necessitating further research.
  • Understanding the mechanisms and identifying safe anesthetic practices are crucial for preventing and treating potential adverse effects.
  • The SmartTots initiative is vital for funding research to address these high-priority concerns for pediatric anesthesia.

Related Concept Videos

Local Anesthetics: Adverse Effects01:12

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...
Drug Toxicity: Dose-Dependent Reactions01:24

Drug Toxicity: Dose-Dependent Reactions

Drug toxicities can be stratified into pharmacological, pathological, or genotoxic based on their mechanisms. The incidence and severity of these toxicities generally increase with the drug's concentration in the body and exposure time.Pharmacological toxicity is evident when the therapeutic effects of drugs overshoot into adverse reactions in a predictable, dose-dependent manner. Central nervous system (CNS) depression from barbiturates is a classic example, with effects escalating from...
Parenteral Anesthetics: Overview01:24

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.
General Anesthesia: Overview01:24

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...
Local Anesthetics: Clinical Application as Epidural Anesthesia01:29

Local Anesthetics: Clinical Application as Epidural Anesthesia

Epidural anesthetics are administered in the fat-filled epidural space, the outermost part of the spinal canal. This technique is commonly employed for pain management and anesthesia during lower abdomen and pelvis surgeries or labor and delivery.
Since epidural anesthetics can be infused through an epidural catheter, all types of drugs, including short-acting ones, can be administered. Chloroprocaine and lidocaine are examples of short and long-duration anesthetics, respectively. Bupivacaine...