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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: 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...

Analgesia and Pain Management

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...

Local Anesthetics: Differential Sensitivity of Nerve Fibers

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...

Pain

Pain

Pain serves as a critical warning signal that alerts the body to potential or actual harm. When mechanical pressure on the skin is intense, such as from a sharp pinch, the sensation transitions from touch to pain. Similarly, extreme temperatures, like a hot pot handle, convert the sensation of heat into pain. Pain can also result from overstimulation of other senses, such as blinding light, loud noise, or the intense heat from habañero peppers. This ability to sense pain is essential for...

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Pain Control via the Dorso-Lumbar Sympathetic Outflow.

The Australian Journal of Physiotherapy

|July 16, 2014

Summary

This summary is machine-generated.

This study explores the effects of treating the sympathetic dorso-lumbar outflow area for pain relief. A new hypothesis explains the success of remote therapies like acupuncture and massage.

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Area of Science:

Pain management
Neuroscience
Physiology

Background:

Remote therapeutic effects of treatments like acupuncture and connective tissue massage lack scientific explanation.
Current understanding of segmental reference distribution does not account for these observed outcomes.

Purpose of the Study:

To investigate previously unsuspected effects of treatments applied to the sympathetic dorso-lumbar outflow.
To propose a hypothesis explaining the mechanisms behind remote therapeutic effects for various painful conditions.

Main Methods:

Clinical observations over a seven-year period.
Application of various treatments to the sympathetic dorso-lumbar outflow area.
Analysis of patient outcomes for a wide range of painful conditions.

Main Results:

Identified previously unsuspected therapeutic effects from targeting the sympathetic dorso-lumbar outflow.
Observed positive outcomes across diverse painful conditions treated via this approach.

Conclusions:

The sympathetic dorso-lumbar outflow is a key area for achieving remote therapeutic effects.
A novel hypothesis is presented to explain the efficacy of these treatments for pain management.