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Related Concept Videos

General Anesthesia: Overview01:24

General Anesthesia: Overview

219
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...
219
Inhalational Anesthetics: Overview01:20

Inhalational Anesthetics: Overview

294
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...
294
Parenteral Anesthetics: Overview01:24

Parenteral Anesthetics: Overview

127
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.
127
Stages of General Anesthesia01:22

Stages of General Anesthesia

447
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...
447
Local Anesthetics: Clinical Application as Epidural Anesthesia01:29

Local Anesthetics: Clinical Application as Epidural Anesthesia

432
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...
432
Local Anesthetics: Pharmacokinetics01:13

Local Anesthetics: Pharmacokinetics

759
The potency and duration of action of local anesthetics (LAs) are determined by their pharmacokinetics. Pharmacokinetics describes how LAs are absorbed, distributed, metabolized, and eliminated from the body. When administered to the vascular tissues, LAs are quickly absorbed and enter the systemic circulation, reducing their localized effects. Adding vasoconstrictors such as epinephrine to LAs reduces their absorption into the systemic circulation, making them clinically effective. The...
759

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Related Experiment Video

Updated: Jul 5, 2025

Optogenetic Activation of Afferent Pathways in Brain Slices and Modulation of Responses by Volatile Anesthetics
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Caffeine - Essentials for anaesthesiologists: A narrative review.

Amit Kumar Malviya1, A M Saranlal1, Manish Mulchandani2

  • 1Department of Anaesthesia, Pain Medicine and Critical Care, New Delhi, India.

Journal of Anaesthesiology, Clinical Pharmacology
|January 25, 2024
PubMed
Summary

Caffeine offers various anesthetic benefits, including managing post-anesthesia complications and headaches. Further research is needed to confirm its efficacy and guide clinical use in anesthesia.

Keywords:
AdultWorld Health Organisationanaesthesiaapnoeacaffeine citratecognitioncritical careinfantpost-dural puncture headachepre-mature

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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
  • Pharmacology

Background:

  • Caffeine has established roles in anesthesia, impacting neurological and cardiovascular systems.
  • Emerging research highlights caffeine's effects on endocrine and gastrointestinal systems for therapeutic benefits.

Purpose of the Study:

  • To review the existing literature on caffeine's clinical applications in anesthesia.
  • To provide insights into caffeine's pharmacokinetics, pharmacodynamics, and evidence-based uses.

Main Methods:

  • Narrative literature review.
  • Synthesis of studies evaluating caffeine's efficacy in various anesthetic scenarios.

Main Results:

  • Caffeine shows potential in managing post-dural puncture headache, post-sedation hyperactivity, and pediatric apnea.
  • Evidence for caffeine's benefits in anesthesia is encouraging but requires further investigation for definitive conclusions.

Conclusions:

  • Caffeine has diverse applications in anesthesia, with growing interest in its endocrine and GI effects.
  • Well-designed randomized controlled trials are essential to establish clear recommendations for caffeine use in anesthesia.