This trial is active, not recruiting.

Condition hand surgery
Treatment axillary brachial plexus block
Sponsor Federal University of São Paulo
Start date August 2013
End date December 2014
Trial size 313 participants
Trial identifier NCT02073383, FUSaoPaulo - USG Guided Block


The brachial plexus block is an anesthetic technique often used for surgical procedures of the upper limb. The brachial plexus block through the axilla (BPVA) is one of the techniques most commonly used to obtain regional anesthesia of the upper limbs, being performed by anesthesia of the terminal branches of the brachial plexus, which would be the ulnar, median, radial and musculocutaneous nerves. With the aid of ultrasound , two techniques can be used to perform the BPVA . The first , known as multiple puncture technique , the local anesthetic is deposited around each nerve that want to block . This technique is most commonly used to perform the BPVA . The second technique , known as 2 injections , local anesthetic is deposited below the axillary artery and around the musculocutaneous nerve . This technique has been proposed to try to reduce the execution time of anesthesia . Studies actually show that the technique of 2 injections showed less time to perform the block, with the same success rate. However, the technique of 2 injections showed a longer latency and higher rate of vascular puncture . (14) In order to perform a procedure with shorter execution time , without changing the latency, success rate and ensuring patient safety , the investigators designed this protocol to evaluate three techniques for performing the ultrasound- guided axillary brachial plexus block.

United States No locations recruiting
Other countries No locations recruiting

Study Design

Allocation randomized
Endpoint classification efficacy study
Intervention model parallel assignment
Masking double blind (subject, investigator, outcomes assessor)
Primary purpose treatment
Intervention Name: Axillary brachial plexus block Group A: 30 ml of 0.375% bupivacaine will be injected around the artery . If this were a clock, would deposit 7,5 ml of anesthetic in positions 0, 3, 6 and 9 .
axillary brachial plexus block
Group 2: 30 ml of bupivacaine 0.375 % below the artery will be injected in the 6 o'clock position .
axillary brachial plexus block
(Active Comparator)
Group Perineural : 10 ml of bupivacaine 0.375 % will be injected around the median, ulnar and radial nerves .
axillary brachial plexus block

Primary Outcomes

The primary outcome is to compare the efficacy of the three different techniques for ultrasound guided axillary brachial plexus block
time frame: The primary outcome will be measured at the same day of the procedure.

Secondary Outcomes

Block Latency
time frame: 30 minutes

Eligibility Criteria

Male or female participants from 18 years up to 65 years old.

Inclusion Criteria: - Informed consent signed by the patient (IC) - Indication for brachial plexus block for anesthesia and analgesia in candidates for hand surgical procedures - ASA physical status I, II or III according to the American Association of Anesthesiology. Exclusion Criteria: - Cognitive impairment or psychiatric disease - Active infection condition at the puncture site of the block - Bleeding disorders - History of allergy to bupivacaine.

Additional Information

Official title Prospective Randomized Study of Three Different Techniques for Ultrasound Guided Axillary Brachial Plexus Block
Trial information was received from ClinicalTrials.gov and was last updated in February 2014.
Information provided to ClinicalTrials.gov by Federal University of São Paulo.