Ophthalmic Artery Resistance Index After Peribulbar Block in the Presence of Epinephrine

Federal University of Minas Gerais

Status: Completed

Conditions: Peribulbar Block; Ophthalmic Artery

Treatments: Drug: Epinephrine

Study type: Interventional

Funder types: Other

Identifiers

NCT04153123

CAAE 04433113.0.0000.5149

Details and patient eligibility

About

Evaluate ophthalmic artery flow by echo-Doppler before and after peribulbar block with lidocaine in presence or absence of epinephrine.

Full 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.

Enrollment: 26 patients

Sex: All

Ages: 30 to 85 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• American Society of Anesthesiologists (ASA) I, II or III physical status classification
• Cataract surgery

Exclusion criteria

• glaucoma
• 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.

Trial design

Primary purpose: Prevention

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Quadruple Blind

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26 participants in 2 patient groups

Lidocaine with epinephrine

Experimental group

Description:

Peribulbar anesthesia with lidocaine and epinephrine

Treatment:

Drug: Epinephrine

Lidocaine without epinephrine

No Intervention group

Description:

Peribulbar anesthesia with lidocaine