Ophthalmic Artery Resistance Index After Peribulbar Block in the Presence of Epinephrine
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Sponsor
- Enrollment
- 26
- Locations
- 1
- Primary Endpoint
- Artery resistance index of ophthalmic artery
Study Overview
Brief Summary
Evaluate ophthalmic artery flow by echo-Doppler before and after peribulbar block with lidocaine in presence or absence of epinephrine.
Detailed Description
There are controversies regarding the ophthalmic artery (OA) flow after peribulbar block with the addition of epinephrine. Therefore, we aimed to evaluate OA flow by echo-Doppler before and after peribulbar block with lidocaine in presence or absence of epinephrine.
Fifty-six patients that were eligible for cataract phacoemulsification surgery were selected. Patients were divided into two groups: group 1 - Peribulbar block with lidocaine and 1/200.000 epinephrine; group 2 - Peribulbar block with lidocaine in the absence of epinephrine. The resistance index (RI) of OA was evaluated using echo-Doppler before and 10 min after the peribulbar block.
Study Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Parallel
- Primary Purpose
- Prevention
- Masking
- Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Masking Description
The preparation of the syringes was performed by one of the researchers not involved in the execution of the blockades. The same anesthesiologist performed all the blocks, while the same ophthalmologist did the ocular monitoring measures.
Eligibility Criteria
- Ages
- 30 Years to 85 Years (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- No
Inclusion Criteria
- •American Society of Anesthesiologists (ASA) I, II or III physical status classification
- •Cataract surgery
Exclusion Criteria
- •diabetic retinopathy
- •previous eye surgery in the same eye
- •ocular trauma
- •allergic to any protocol medication
- •uncooperative patients or cognitive difficulties
- •axial eye diameter of less than 21.0 mm or greater than 25.5 mm.
Arms & Interventions
Lidocaine with epinephrine
Peribulbar anesthesia with lidocaine and epinephrine
Intervention: Epinephrine (Drug)
Outcomes
Primary Outcomes
Artery resistance index of ophthalmic artery
Time Frame: Change on resistance index 10 minutes after peribulbar anesthesia
The resistance index (RI) of OA was evaluated using echo-Doppler before and 10 minutes after the peribulbar block.
Secondary Outcomes
No secondary outcomes reported
Investigators
Renato Santiago Gomez
Professor
Federal University of Minas Gerais