Anaesthesia for Ophthalmic Surgery: How "Retro" is the Peribulbar Block?
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|ClinicalTrials.gov Identifier: NCT01258959|
Recruitment Status : Completed
First Posted : December 13, 2010
Last Update Posted : June 9, 2011
|Condition or disease||Intervention/treatment|
|Ophthalmic Surgery Parabulbar Block||Procedure: Ultrasound detection of local anesthetics spread|
|Study Type :||Observational|
|Estimated Enrollment :||100 participants|
|Official Title:||Anaesthesia for Ophthalmic Surgery: How "Retro" is the Peribulbar Block?|
|Study Start Date :||January 2011|
|Primary Completion Date :||June 2011|
|Study Completion Date :||June 2011|
Ophthalmic surgery patients
Patients (men and women) of at least 18 years of age undergoing an ophthalmic procedure on the posterior section of the eye under local anaesthesia, i.e. with a peribulbar block. Inclusion and exclusion criteria for the study are the same as for the peribulbar anaesthesia.
Procedure: Ultrasound detection of local anesthetics spread
During the parabulbar injection the ultrasound operator experienced in ultrasound guided retrobulbar block will assess whether there is spread of local anaesthetic in the central cone just behind the sclera (yes or no). The anaesthesist performing the block will be blinded to the ultrasound visualized spread of local anaesthetic.
- Incidence of detectable retrobulbar spread of local anaesthetics during peribulbar injection. [ Time Frame: At start (During peribulbar injection) ]The outcome measure is the description of the spread of local anesthetics during the injection of the drug via the parabulbar needle.
- Assessment of block quality [ Time Frame: 20 Minutes after block ]Assessment of the block quality by ophthalmic surgeon just before surgery starts and at least 20 minutes after the block: complete akinesia and anaesthesia or partial akinesia/anaesthesia.
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01258959
|Sunnybrook Health Science Centres|
|Toronto, Ontario, Canada, M4N 3M5|