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Related Concept Videos

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...
Nondepolarizing (Competitive) Neuromuscular Blockers: Mechanism of Action01:17

Nondepolarizing (Competitive) Neuromuscular Blockers: Mechanism of Action

Nondepolarizing neuromuscular blockers induce paralysis by competitively blocking nicotinic acetylcholine receptors at the muscle end plate. Examples include pancuronium, mivacurium, vecuronium, and rocuronium. These quaternary ammonium derivatives are administered intravenously, are poorly absorbed, and are excreted via the kidneys.
Competitive antagonists prevent acetylcholine from binding to its receptor, inhibiting membrane depolarization. Without conformational changes or intrinsic...
Nondepolarizing (Competitive) Neuromuscular Blockers: Pharmacological Actions01:27

Nondepolarizing (Competitive) Neuromuscular Blockers: Pharmacological Actions

Nondepolarizing neuromuscular blockers prevent the membrane depolarization of muscle cells and inhibit muscle contraction. These are usually administered with anesthetics to achieve complete muscle relaxation. Upon administration, these drugs first block the small, rapidly contracting muscles of the face and hands, followed by the larger muscles of the trunk and the intercostal muscles. The diaphragm is the last muscle to be affected.
Although all competitive neuromuscular blockers are designed...
Spinal Nerves: Plexus II01:21

Spinal Nerves: Plexus II

The plexuses of the lower body include the lumbar, sacral, and coccygeal plexuses, which innervate the abdomen, pelvis, legs, and coccygeal region. These plexuses control the transmission of sensory information and coordinate motor functions of the lower body.
The Lumbar Plexus
The lumbar plexus is situated within the lumbar region of the back and is primarily formed by the first four lumbar spinal nerves (L1 to L4). This plexus extends its branches into several nerves, including 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...
Nursing Assessment of the Genitourinary System II: Inspection and Palpation01:26

Nursing Assessment of the Genitourinary System II: Inspection and Palpation

The nursing assessment of the genitourinary (GU) system involves a systematic inspection and palpation to identify abnormalities in the kidneys, bladder, and surrounding structures.InspectionMouth: Inspect for signs of kidney dysfunction, such as stomatitis (inflammation of the mouth) and ammonia breath, which may occur in advanced kidney disease due to the buildup of urea, breaking down into ammonia.Skin: Check for pallor, which could indicate anemia caused by kidney disease. Look for...

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Related Experiment Video

Updated: Jun 13, 2026

Minimally Invasive Surgical Decompression of Occipital Nerves
04:06

Minimally Invasive Surgical Decompression of Occipital Nerves

Published on: September 13, 2024

[Obturator nerve block].

Christian Freisburger1, Bernd Nachtigall, Hinnerk Wulf

  • 1Klinik für Anästhesie und Intensivtherapie am Universitätsklinikum Giessen und Marburg GmbH, Standort Marburg. Christian.Freisburger@med.uni-marburg.de

Anasthesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie : AINS
|May 11, 2010
PubMed
Summary
This summary is machine-generated.

Obturator nerve blocks are crucial for bladder surgery and knee procedures. A specific approach is recommended due to inconsistent anesthesia with the "3 in 1" block, ensuring better patient outcomes.

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Area of Science:

  • Anesthesiology
  • Surgical Procedures
  • Pain Management

Context:

  • Obturator nerve block is vital for transurethral bladder resections and knee surgeries.
  • It helps prevent adductor muscle reactions and bladder perforation.
  • Continuous techniques manage chronic adductor spasms.

Purpose:

  • To describe and compare classical and alternative approaches for obturator nerve block.
  • To highlight the limitations of the "3 in 1" block for obturator nerve anesthesia.
  • To emphasize the need for a specific obturator nerve approach.

Summary:

  • Both classical and alternative approaches utilize anatomical landmarks and nerve stimulators.
  • The classical approach involves landmarks near the tuberculum pubicum.
  • The alternative approach uses the adductor longus tendon insertion, advancing towards the anterior superior iliac spine.
  • 15-20ml of local anesthetic is injected in both techniques.

Impact:

  • Optimizing obturator nerve block techniques can improve surgical safety and efficacy.
  • Ensuring adequate anesthesia reduces the risk of complications during transurethral surgery.
  • Effective pain management post-knee surgery can be enhanced.