Epidural Anesthesia
Epidural Anesthesia - Related Videos
01:29
Local Anesthetics: Clinical Application as Epidural Anesthesia
0 Views •
2023
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...
06:58
Non-restraining EEG Radiotelemetry: Epidural and Deep Intracerebral Stereotaxic EEG Electrode Placement
0 Views •
Cited by 21 •
2016
Non-restraining EEG radiotelemetry is a valuable methodological approach to record in vivo long-term electroencephalograms from freely moving rodents. This detailed protocol describes stereotaxic epidural and deep intracerebral electrode placement in different brain regions in order to obtain reliable recordings of CNS rhythmicity and CNS related behavioral stages.
09:04
Epidural Intracranial Pressure Measurement in Rats Using a Fiber-optic Pressure Transducer
0 Views •
Cited by 30 •
2012
A novel technique to record the pressures within the skull is described. The minimally invasive method uses a fibre-optic pressure sensing system to accurately measure intracranial pressure (ICP) in anaesthetized rats without causing significant brain trauma. The technique may be used in a wide range of experimental models.
14:01
Anesthesia Induction and Maintenance
0 Views •
2016
Source: Kay Stewart, RVT, RLATG, CMAR; Valerie A. Schroeder, RVT, RLATG. University of Notre Dame, IN The Guide for the Care and Use of Laboratory Animals ("The Guide") states that pain assessment and alleviation are integral components of the veterinary care of laboratory animals. The definition of anesthesia is the loss of feeling or sensation. It is a dynamic event involving changes in anesthetic depth with respect to an animal's metabolism, surgical stimulation, or variations in the...
01:36
Anesthesia and Monitoring in a Rabbit Model
0 Views •
2026
All animal procedures described here must be conducted in accordance with institutional animal ethics guidelines and approved by IACUC. All procedures must follow the principles of the 3Rs—Replacement, Reduction, and Refinement—and must be performed by trained personnel. Anesthesia is an essential component of rabbit surgical and experimental procedures because it prevents pain, reduces stress responses, and helps immobilize the animal during handling and manipulation when general anesthesia is...
FAQs
The local anesthetic acts primarily by blocking voltage-gated sodium channels in nerves reached by the epidural drug. Without effective sodium-channel activity, nerve signals cannot propagate normally, so sensory transmission from the targeted region is reduced. This mechanism explains why epidural dosing can provide analgesia while preserving consciousness, rather than producing unconsciousness.
Drug selection determines which agents are delivered near the spinal nerve roots and how their effects are interpreted. The described regimen uses a local anesthetic, often with an opioid, so pharmacology must consider both the chosen drugs and the resulting balance between sensory analgesia and motor blockade. This makes agent selection central to tailoring regional anesthesia.
Changing the local-anesthetic concentration or volume can change the balance between sensory analgesia and motor blockade. Lower or more limited dosing may preserve movement while reducing sensation, whereas a more extensive dose can produce broader motor effects. These variables give clinicians a way to adjust the anesthetic effect to the targeted area and intended clinical use.
A typical epidural sequence begins with clinician placement of a needle or catheter in the epidural space near the spinal cord, followed by administration of the selected drug regimen. The delivery route allows dosing to be adjusted, and the resulting effect can be considered in terms of sensory analgesia and the degree of motor blockade produced.
Epidural anesthesia is used in several distinct care settings: labor, cesarean delivery, and postoperative pain control. The same pharmacological approach can therefore support pain reduction during childbirth or surgery and serve analgesic needs afterward. Its flexibility comes from adjusting drug delivery and the extent of blockade rather than changing the patient’s consciousness.
Within pharmacology, epidural anesthesia illustrates how drug choice, delivery, and monitoring jointly determine clinical effects. A local anesthetic can reduce nerve signaling, while concentration and volume influence whether the result is mainly sensory or includes more motor blockade. Monitoring is therefore relevant to relating the administered regimen to observed analgesia and blockade, as well as to its risks.