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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.
Local Anesthetics: Clinical Application as Spinal Anesthesia01:11

Local Anesthetics: Clinical Application as Spinal Anesthesia

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...
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...
Stages of General Anesthesia01:22

Stages of General Anesthesia

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...
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 Intravenous Regional Anesthesia01:16

Local Anesthetics: Clinical Application as Intravenous Regional Anesthesia

Intravenous regional anesthesia or the Bier block technique is used to anesthetize a specific limb or extremity. It uses exsanguinated or blood-drained vessels to transport local anesthetics or LAs to the peripheral nerve trunks. Lidocaine without vasoconstrictors like epinephrine is most commonly used for this technique. Other drugs used are prilocaine, ropivacaine, and chloroprocaine. Bupivacaine is not recommended for this technique due to its high cardiac toxicity.
One of the advantages of...

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Related Experiment Video

Updated: May 22, 2026

Recording Brain Electromagnetic Activity During the Administration of the Gaseous Anesthetic Agents Xenon and Nitrous Oxide in Healthy Volunteers
14:52

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

Published on: January 13, 2018

Propofol sedation during spinal anaesthesia- a dose finding study.

A Ghimire1, B Bhattarai, T R Rahman

  • 1Department of Anaesthesiology and Critical Care, BPKIHS, Dharan, Nepal. ashishghimi@hotmail.com

Kathmandu University Medical Journal (KUMJ)
|May 22, 2012
PubMed
Summary
This summary is machine-generated.

The optimal propofol infusion dose for spinal anesthesia is 50 mcg/kg/min, balancing sedation, patient comfort, and early awakening. This dose ensures patient safety and satisfaction during procedures.

Related Experiment Videos

Last Updated: May 22, 2026

Recording Brain Electromagnetic Activity During the Administration of the Gaseous Anesthetic Agents Xenon and Nitrous Oxide in Healthy Volunteers
14:52

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

Published on: January 13, 2018

Area of Science:

  • Anesthesiology
  • Pharmacology

Background:

  • Maintaining optimal sedation levels is crucial for patient comfort, amnesia, and safety during anesthesia.
  • Comparing different propofol infusion doses is essential for determining appropriate sedation strategies.

Purpose of the Study:

  • To identify the ideal propofol infusion dose for effective sedation in patients undergoing spinal anesthesia.
  • To minimize adverse effects while ensuring patient satisfaction and safety.

Main Methods:

  • A prospective randomized clinical study involving 120 patients (ASA PS I-II).
  • Patients were allocated to three groups receiving propofol infusion at 25, 50, or 75 mcg/kg/min.
  • Sedation scores, hemodynamic parameters, patient satisfaction, and adverse effects were assessed.

Main Results:

  • Sedation scores increased with propofol dose, with significantly higher scores in the 50 and 75 mcg/kg/min groups.
  • Hemodynamic stability was better in the lower dose groups (25 and 50 mcg/kg/min).
  • Awakening time was significantly delayed in the highest dose group (75 mcg/kg/min).

Conclusions:

  • Propofol infusion at 50 mcg/kg/min provides optimal sedation during spinal anesthesia.
  • This dose facilitates early awakening and high patient satisfaction post-procedure.
  • The 50 mcg/kg/min dose represents a favorable balance of efficacy and safety.