NCT01701115

Effect of Local Anesthetic Dose on Interscalene Block

Effect of Local Anesthetic Dose on Interscalene Block for Shoulder Arthroscopy, Patient Satisfaction and Return of Handgrip Strength

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 154 (actual)
• Sponsor: Hospital for Special Surgery, New York · Academic / Other
• Sex: All
• Age: 18 Years – 80 Years
• Healthy volunteers: Accepted

Summary

The purpose of this study is to determine if a decrease in the standard volume of local anesthetic used to numb your shoulder area before shoulder arthroscopy will provide adequate anesthesia for the procedure and decrease the amount of time until you are ready for discharge from the hospital.

Detailed description

Traditionally, an interscalene block is done either with nerve stimulator or ultrasound guided using 40-60mL of local anesthetic. The study plans to investigate the difference in hand grip strength post-operatively in patients who will receive interscalene blocks with 40mL versus a lower dose (20mL) of local anesthetic. We suspect the lower dose will achieve adequate surgical anesthesia while creating less motor block and thus, increase patient satisfaction, present fewer complications or adverse affects and decrease time in the recovery room.

Conditions

• Shoulder Arthroscopy
• Interscalene Block

Interventions

Type	Name	Description
PROCEDURE	Low Dose (20 ml) Local Anesthetic Volume for Interscalene Block	Anesthetic volume: Investigational group: A 1:1 Mepivacaine 1.5%: Bupivacaine 0.5% mixture for a total of 20 mL
PROCEDURE	Control Dose (40 mL) Local Anesthetic Volume for Interscalene Block	Anesthetic volume: Control group: A 1:1 Mepivacaine 1.5%: Bupivacaine 0.5% mixture for a total of 40 mL
DRUG	Low Dose (20 mL) Local Anesthetic (Mepivacaine:Bupivacaine)
DRUG	Control Dose (40 mL) Local Anesthetic (Mepivacaine:Bupivacaine)

Timeline

• Start date: 2012-08-01
• Primary completion: 2013-08-01
• Completion: 2013-08-01
• First posted: 2012-10-04
• Last updated: 2017-10-04
• Results posted: 2017-10-04

Locations

1 site across 1 country: United States