Related Experiment Video
Updated: Feb 7, 2026
06:40
An In Vivo Mouse Model of Total Intravenous Anesthesia During Cancer Resection Surgery
Published on: June 8, 2021
2.9K
Peribulbar anesthesia in sclero-retinal surgery: two quadrants vs single injection
Il Giornale Di Chirurgia
|July 25, 2018
Summary
Two-quadrant peribulbar anesthesia offers superior pain control for rhegmatogenous retinal detachment surgery compared to single-quadrant injections. This technique reduces the need for additional anesthetic during the procedure, improving patient outcomes.
Area of Science:
- Ophthalmology
- Anesthesiology
- Retinal Surgery
Background:
- Scleral surgery for rhegmatogenous retinal detachment (RRD) requires effective local anesthesia.
- Peribulbar anesthesia is a common technique, but optimal injection strategy requires evaluation.
Purpose of the Study:
- To compare the efficacy of two-quadrant peribulbar anesthesia versus single-quadrant peribulbar anesthesia for RRD surgery.
- To assess the need for additional anesthetic injections and postoperative pain levels.
Main Methods:
- A randomized study of 57 patients undergoing RRD surgery.
- Group S (n=29) received single-quadrant injection; Group C (n=28) received two-quadrant injection.
- Pain assessed using Verbal Analogue Scale (VAS) at multiple time points.
Main Results:
- A significantly lower rate of additional peribulbar injections was needed in the single-quadrant group (3.57%) compared to the two-quadrant group (32.14%) (p < 0.05).
- One patient in the single-quadrant group required an additional injection during surgery due to high pain (VAS=7).
- No significant difference in postoperative VAS scores at 6, 12, or 24 hours between groups.
Conclusions:
- Two-quadrant peribulbar anesthesia provides effective anesthesia for RRD surgery.
- This technique may enhance the success of retinal detachment repair under local anesthesia.
Related Concept Videos
01:19Abdominal Regions and Quadrants
17.8K
To promote clear communication, for instance, about the location of a patient's abdominal pain or a suspicious mass, anatomists and clinicians typically use imaginary lines to categorize the abdominopelvic cavity into either four quadrants or nine regions to identify organs in the cavity.
The simpler quadrants approach, which is more commonly used in medicine, subdivides the cavity with one horizontal and one vertical line that intersects at the patient's umbilicus (navel). The four...
The simpler quadrants approach, which is more commonly used in medicine, subdivides the cavity with one horizontal and one vertical line that intersects at the patient's umbilicus (navel). The four...
17.8K
01:24General Anesthesia: Overview
679
Anesthesia is a medical procedure that uses drugs for CNS suppression to enable painless surgeries and procedures. The selection of anesthetics is influenced by their pharmacokinetic properties, side effects, and patient characteristics. Various types of anesthesia include general, local, regional, spinal, and inhalational.
General anesthesia induces unconsciousness in the whole body, while the others target specific areas or sensations. It is administered to minimize adverse effects, maintain...
General anesthesia induces unconsciousness in the whole body, while the others target specific areas or sensations. It is administered to minimize adverse effects, maintain...
679
01:22Stages of General Anesthesia
1.7K
Various sedation levels offer significant advantages in facilitating procedural interventions for patients undergoing medical or invasive surgical procedures. These levels span from anxiolysis to general anesthesia, providing a spectrum of sedative effects to cater to specific patient needs. Anxiolysis reduces anxiety and is achieved through minimal sedation, enabling patients to remain awake and responsive while feeling more at ease during the procedure. This level can benefit minor...
1.7K
01:11Local Anesthetics: Clinical Application as Spinal Anesthesia
1.5K
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...
1.5K
01:29Local Anesthetics: Clinical Application as Epidural Anesthesia
760
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...
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...
760
01:16Local Anesthetics: Clinical Application as Intravenous Regional Anesthesia
1.4K
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...
One of the advantages of...
1.4K