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Related Concept Videos

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.
Sedatives and Hypnotics Drugs: Miscellaneous Agents01:17

Sedatives and Hypnotics Drugs: Miscellaneous Agents

Sedatives and hypnotics encompass a wide range of substances, each with its unique mechanism of action, uses, and potential adverse effects.
Melatonin congeners like ramelteon (Rozerem) and tasimelteon (Hetlioz) selectively bind to melatonin receptors (MT1 and MT2) and thus mimic the actions of melatonin, a hormone that regulates sleep-wake cycles. Tasimelteon is primarily used for non-24-hour sleep-wake disorder, common in blind patients. They are also used to treat conditions like insomnia...
Sedatives and Hypnotics: Overview01:23

Sedatives and Hypnotics: Overview

Sedatives are drugs that alleviate anxiety, while hypnotics induce sleep. Both classes of medication suppress neuronal activity, leading to a calming effect for sedatives and facilitating sleep for hypnotics.
Sedative-hypnotics are categorized into barbiturates, benzodiazepines (BZDs), and non-benzodiazepines or Z-drugs. These drugs work by suppressing central nervous system activity, and this suppression is dose-dependent. Older sedative medications, like barbiturates, follow a linear curve in...
Amnesia01:13

Amnesia

Amnesia is a condition marked by long-term memory loss, which impairs the ability to recall past events or create new memories.
The severity and duration of memory loss vary depending on the type and underlying cause. Amnesia is classified into two main types: retrograde and anterograde.
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Anterograde...
Sedatives and Hypnotics Drugs: Barbiturates01:20

Sedatives and Hypnotics Drugs: Barbiturates

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Higher Mental Functions of Brain: Learning and Memory01:26

Higher Mental Functions of Brain: Learning and Memory

Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or playing an...

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Related Experiment Video

Updated: Jul 12, 2026

Assessing Changes in Volatile General Anesthetic Sensitivity of Mice after Local or Systemic Pharmacological Intervention
08:49

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Published on: October 16, 2013

[Propofol does not induce retrograde amnesia at the hypnotic dose].

Kazuyoshi Hashimoto1, Takayuki Okada, Norimasa Seo

  • 1Department of Anesthesiology, Hanyu General Hospital, Hanyu 348-8505.

Masui. the Japanese Journal of Anesthesiology
|August 25, 2007
PubMed
Summary

Propofol at hypnotic doses does not impair memory recall. This study found no significant difference in memory performance after propofol infusion compared to baseline, suggesting it does not cause retrograde amnesia.

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Recording Brain Electromagnetic Activity During the Administration of the Gaseous Anesthetic Agents Xenon and Nitrous Oxide in Healthy Volunteers
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Area of Science:

  • Anesthesiology
  • Neuroscience
  • Cognitive Psychology

Context:

  • Propofol is a widely used anesthetic agent.
  • Understanding its potential cognitive side effects is crucial for patient safety.
  • Retrograde amnesia is a potential concern with anesthetic agents.

Purpose:

  • To investigate the retrograde amnesic effects of propofol at a hypnotic dose.
  • To assess explicit memory function following propofol administration.

Summary:

  • Healthy volunteers received a bolus infusion of propofol (2 mg/kg).
  • Explicit memory was tested by recalling previously memorized playing cards post-anesthesia.
  • Performance was compared to a no-drug control condition.

Impact:

  • The findings suggest propofol, at hypnotic doses, does not induce significant retrograde amnesia.
  • This information can aid clinicians in managing patient expectations and understanding potential cognitive impacts.
  • Further research may explore dose-dependent effects or different memory types.