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Local Anesthetics: Clinical Application as Intravenous Regional Anesthesia

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...

Local Anesthetics: Clinical Application as Surface, Infiltration, and Conduction Block Anesthesia

Local Anesthetics: Clinical Application as Surface, Infiltration, and Conduction Block Anesthesia

Depending on the target organ, local anesthetics (LAs) can be administered via various routes. In surface anesthesia, LAs are applied directly to the surface of the skin or mucous membranes. It is widely used for topical skin numbing before venipuncture or minor surgical procedures. Commonly used surface local anesthetics are lidocaine or benzocaine sprays or creams. Surface anesthesia occurs within 5 minutes and lasts for about 60 minutes. One of the main disadvantages of topical anesthesia is...

Local Anesthetics: Clinical Application as Epidural Anesthesia

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: Clinical Application as Spinal Anesthesia

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: Common Agents and Their Applications

Local Anesthetics: Common Agents and Their Applications

Local anesthetics (LAs) are commonly used for various applications in medical and dental procedures. Some of the common agents used are cocaine, lidocaine, and bupivacaine.
Cocaine is an ester of benzoic acid and methylecgogine. It is used to anesthetize and vasoconstrict locally. Currently, it is used primarily for topical applications. It is beneficial for surgeries on the upper respiratory tract, providing anesthesia and shrinking the mucosa. Cocaine in the form of cocaine hydrochloride is...

Local Anesthetics: Pharmacokinetics

Local Anesthetics: Pharmacokinetics

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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Spinal Sonography for Ultrasound-Guided Lumbar Neuraxial Anesthesia

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[Local and regional anaesthesia. Principles and techniques].

C Kill¹, H Wulf

¹Klinik für Anästhesie und Intensivtherapie, Universitätsklinikum Giessen-Marburg GmbH, Marburg, Germany. killc@staff.uni-marburg.de

Der Chirurg; Zeitschrift Fur Alle Gebiete Der Operativen Medizen

|August 12, 2009

Summary

Continuous regional anesthesia, including epidural and peripheral catheter techniques, enhances surgical outcomes and reduces postoperative pain. Prompt availability of emergency treatment for rare complications is crucial for patient safety.

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Area of Science:

Anesthesiology
Surgical Procedures
Pain Management

Context:

Local and regional anesthesia are frequently employed in surgical settings.
Continuous regional anesthesia techniques offer potential benefits for patient outcomes.
Postoperative pain management is a critical aspect of surgical care.

Purpose:

To highlight the benefits of continuous regional anesthesia techniques.
To differentiate the applications of epidural and peripheral catheter anesthesia.
To emphasize the importance of preparedness for potential complications.

Summary:

Continuous regional anesthesia, utilizing epidural techniques for thoracic and abdominal surgeries and peripheral catheters for limb surgeries, can improve surgical outcomes.
These advanced anesthesia methods are effective in significantly reducing postoperative pain.
While generally safe, continuous regional anesthesia necessitates readily available emergency protocols for managing rare, life-threatening complications.

Impact:

Improved patient recovery and reduced reliance on systemic analgesics.
Enhanced patient satisfaction due to effective pain control.
Increased safety in surgical practices through preparedness for adverse events.