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Related Concept Videos

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...
Local Anesthetics: Differential Sensitivity of Nerve Fibers01:24

Local Anesthetics: Differential Sensitivity of Nerve Fibers

Local anesthetics (LAs) block the sodium channels of nerve trunks, sensory nerve endings, and neuromuscular junctions. Although LAs can block all kinds of nerves, the sensitivity of nerve fibers differs according to nerve types and structures. LAs are known to block myelinated fibers faster than unmyelinated ones. Also, they block pain or sensory neurons at low concentrations without affecting the motor neurons involved in muscle contractions. This helps relieve labor pain without affecting the...
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...
Analgesia and Pain Management01:25

Analgesia and Pain Management

Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...
Opioid Analgesics: Synthetic and Semisynthetic Opioids01:15

Opioid Analgesics: Synthetic and Semisynthetic Opioids

Synthetic and semisynthetic opioids are pivotal in pain management and tackling opioid addiction. Semisynthetic opioids, including morphinans (morphine derivatives), oxycodone, oxymorphone, hydrocodone, and hydromorphone, have improved pharmacokinetic profiles compared to morphine. Additionally, heroin and 6-MAM (6-Monoacetylmorphine) show better CNS penetration than morphine due to heightened lipid solubility. Hydromorphone, a potent opioid, undergoes hepatic metabolism to form the active...
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.

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Related Experiment Video

Updated: Jun 8, 2026

An Experimental Paradigm for the Prediction of Post-Operative Pain (PPOP)
14:56

An Experimental Paradigm for the Prediction of Post-Operative Pain (PPOP)

Published on: January 27, 2010

Pain management during labor.

Ruth Landau1

  • 1Department of Anesthesiology, University of Washington Medical Center 1959 NE Pacific Street, Suite BB 1415B, Seattle, WA 98195-6540 USA.

F1000 Medicine Reports
|October 16, 2010
PubMed
Summary
This summary is machine-generated.

Early labor pain relief is safe and effective. Automated large boluses of diluted local anesthetic with opioids in patient-controlled epidural analgesia may offer better pain management than continuous infusions.

Related Experiment Videos

Last Updated: Jun 8, 2026

An Experimental Paradigm for the Prediction of Post-Operative Pain (PPOP)
14:56

An Experimental Paradigm for the Prediction of Post-Operative Pain (PPOP)

Published on: January 27, 2010

Area of Science:

  • Obstetrics and Gynecology
  • Anesthesiology
  • Pain Management

Background:

  • Effective labor analgesia is crucial for maternal well-being.
  • Patient-controlled epidural analgesia (PCEA) is a common method for managing childbirth pain.
  • Optimizing PCEA delivery methods can enhance pain relief efficacy and patient satisfaction.

Purpose of the Study:

  • To evaluate the safety and efficacy of initiating labor analgesia early in the labor process.
  • To compare the effectiveness of automated large bolus delivery versus continuous background infusion in PCEA for labor analgesia.

Main Methods:

  • Review of recent studies on labor analgesia management.
  • Analysis of data comparing different PCEA delivery methods (bolus vs. infusion) with local anesthetic and opioids.

Main Results:

  • Initiating pain relief early in labor has no adverse effects on the birthing process or the neonate.
  • Automated delivery of large boluses of diluted local anesthetic with opioids appears more effective than continuous background infusion in PCEA.

Conclusions:

  • Early administration of labor analgesia is a safe and viable strategy.
  • PCEA with automated large boluses may represent a superior approach to labor pain management compared to continuous infusion techniques.