Comparison of Ultrasound-Guided Infraclavicular Block and Ultrasound-Guided Axillary Block

Comparison of Ultrasound-Guided Single Injection Infraclavicular Block or Ultrasound-Guided Double Injection Axillary Block : A Non-inferiority Randomized Trial

The purpose of this study is to compare the rate of complete sensory block at 30 minutes following ultrasound-guided single injection infraclavicular block and ultrasound-guided double injection axillary block. The investigators research hypothesis is that both blocks will show comparable rates of complete sensory block at 30 minutes.

Inclusion Criteria:

• 18 years or older
• American Society of Anesthesiologists Class 1 to 3
• Undergoing a surgery at the elbow, forearm, wrist or hand under regional anesthesia

Exclusion Criteria:

• Age less than 18 years
• Body mass index more than 40 kg/m2
• Weight less than 45 kg
• Patient refusal
• Contraindication to regional anesthesia (coagulopathy, local infection at the puncture site, systemic infection)
• Previous neurological deficit in the operated arm
• Severe renal or hepatic failure
• Prior surgery in the axillary or infraclavicular area
• Pregnancy or breast-feeding