Cerebral oxygenation in the beachchair surgical patient

Not Applicable

Completed

• Conditions: Stroke - Ischaemic; Intraoperative cerebral ischaemia; Beachchair position during shoulder surgery; Anaesthesiology - Anaesthetics; Surgery - Surgical techniques

• Registration Number: ACTRN12613000531718
• Lead Sponsor: Melbourne Orthopaedic Research Group

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Study Start: 2013-05-13
• Last Update Posted: 13 January 2020

Recruitment & Eligibility

• Status: Completed
• Sex: All
• Target Recruitment: 40

Inclusion Criteria

>18 years of age
Shoulder surgery suitable for beach chair position
Able to provide informed consent

Exclusion Criteria

Previous cerebrovascular event
Current cardiac disease including pacemaker Cerebrovascular disease
Significant cardiac or respiratory impairment
Contraindications to interscalene block
Inadequate understanding of English
Body Mass Index (BMI) > 35

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Cerebral oxygen delivery in the beach chair position. Measurement of frontal lobe cerebral oxygenation by near infra-red spectroscopy.[The primary timepoint is beachchair positioning, which occurs following induction and at completion of vasopressor infusion. ]

Secondary Outcome Measures

Name	Time	Method
Change in arterial blood pressure using intra-arterial pressure monitoring with transducer placed at tragus, and heart rate from ECG.[The secondary timepoint is beachchair positioning, which occurs following induction and at completion of vasopressor infusion. ];An ipsilateral change in cerebral oxygen saturation following interscalene blockade. Measurement of frontal lobe cerebral oxygenation by near infra-red spectroscopy.[Following interscalene blockade until post-induction before vasopressor infusion.]