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Related Concept Videos

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.
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Parenteral Anesthetics: Overview01:24

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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.
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Anatomical Positions01:11

Anatomical Positions

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In anatomy, several standard anatomical positions are used as references for describing the position and orientation of different body parts. These positions help provide a common frame of reference when discussing anatomical structures. The anatomical position is the standard reference point for describing the body's position and orientation. In this position:
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Stages of General Anesthesia01:22

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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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Inhalational Anesthetics: Overview01:20

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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...
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Local Anesthetics: Clinical Application as Spinal Anesthesia01:11

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Spinal anesthetics are given during lower abdomen and limb surgeries to block sensory and motor neurons. They are administered in the mid to low lumbar regions, primarily acting on the cauda equina's nerve roots. The blockade level depends on the local anesthetic (LA) concentration. Usually, low LA concentrations are sufficient to block sensory fibers, while only high LA concentrations block motor fibers. Other factors like injection volume and speed, the patient's posture, and the drug...
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Author Spotlight: A Non-Intubated Video-Assisted Thoracoscopic Surgery with Multimodal Analgesia and Sevoflurane Inhalation Anesthesia
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Should we induce general anesthesia in the prone position?

Louise Ellard1, David T Wong

  • 1aDepartment of Anaesthesia, Austin Health, Victoria, Australia bDepartment of Anesthesia, Toronto Western Hospital, University of Toronto, Toronto, Ontario, Canada.

Current Opinion in Anaesthesiology
|September 26, 2014
PubMed
Summary
This summary is machine-generated.

Prone induction of anesthesia, where patients are positioned prone before anesthesia, is feasible for select spinal surgery patients. While potentially time-saving, its routine use is not yet supported by sufficient evidence.

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Area of Science:

  • Anesthesiology
  • Surgical Procedures

Background:

  • Traditional anesthesia induction involves patients lying supine.
  • Prone positioning is common for specific surgeries like spinal procedures.

Purpose of the Study:

  • To review existing literature on the safety and feasibility of inducing anesthesia while patients are in the prone position.
  • To evaluate prone induction as an alternative to supine induction for prone surgeries.

Main Methods:

  • Review of current literature, including case series and a recent randomized trial.
  • Analysis of reported outcomes, benefits, and risks associated with prone induction.

Main Results:

  • A randomized trial indicated time-saving benefits for prone induction.
  • Case series suggest feasibility, but benefits like reduced pressure injuries remain unproven.
  • Potential risks include airway loss and hemodynamic instability; supraglottic airways are often used.

Conclusions:

  • Elective prone induction using supraglottic airways is feasible in select patients with low complication rates.
  • Insufficient evidence currently supports the routine adoption of prone anesthesia induction.