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Related Concept Videos

Inhalational Anesthetics: Overview01:20

Inhalational Anesthetics: Overview

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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...
377
General Anesthesia: Overview01:24

General Anesthesia: Overview

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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...
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Stages of General Anesthesia01:22

Stages of General Anesthesia

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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...
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Parenteral Anesthetics: Overview01:24

Parenteral Anesthetics: Overview

171
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.
171
Local Anesthetics: Pharmacokinetics01:13

Local Anesthetics: Pharmacokinetics

820
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...
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Local Anesthetics: Clinical Application as Epidural Anesthesia01:29

Local Anesthetics: Clinical Application as Epidural Anesthesia

466
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...
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Related Experiment Video

Updated: Aug 3, 2025

Recording Brain Electromagnetic Activity During the Administration of the Gaseous Anesthetic Agents Xenon and Nitrous Oxide in Healthy Volunteers
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Knowledge Gaps in Anesthetic Gas Utilization in a Large Academic Hospital System: A Multicenter Survey.

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  • 1Anesthesiology and Perioperative Medicine, UCI (University of California Irvine) Health, Orange, USA.

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|April 10, 2023
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Summary

Anesthesia providers show significant knowledge gaps regarding carbon dioxide absorbents and fresh gas flow management, impacting healthcare sustainability. Educational initiatives are crucial for reducing environmental and economic costs in perioperative care.

Keywords:
carbon dioxide emissionseducationfresh gas flowsustainabilityvolatile anesthetic

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Area of Science:

  • Environmental Science
  • Medical Education
  • Anesthesiology

Background:

  • Inhaled anesthetics contribute significantly to greenhouse gas emissions in healthcare.
  • Perioperative services are increasingly scrutinized for their environmental impact.
  • Sustainable practices in anesthesia are essential for healthcare decarbonization.

Purpose of the Study:

  • To identify knowledge gaps and practice patterns concerning CO2 absorbents and fresh gas flows (FGF) among anesthesia providers.
  • To explore how training levels influence these knowledge gaps.
  • To inform future sustainability initiatives in perioperative care.

Main Methods:

  • A cross-sectional survey study was conducted across five large academic medical centers.
  • 368 anesthesia care team members (physicians, residents, nurse anesthetists) completed surveys.
  • Data collected included CO2 absorbent knowledge, FGF practices, and perceptions of anesthetic environmental/economic impact.

Main Results:

  • 76% of respondents were unaware of their hospital's CO2 absorbent type.
  • High usage of sevoflurane and desflurane with FGF ≥1 L/min was reported (59% and 48%, respectively).
  • Desflurane was widely recognized for its environmental impact, while isoflurane was identified as cost-effective.

Conclusions:

  • Significant knowledge gaps exist regarding CO2 absorbents and optimal FGF usage within the anesthesia care team.
  • Targeted educational programs are needed to enhance awareness of anesthetic carbon emissions and sustainable practices.
  • Improving knowledge and practices can reduce the environmental and economic burden of perioperative care.