Clinical trial NCT03928574: USG Block of Cutaneous Nerves of the Arm
Official title: Ultrasound-Guided Plane Versus Conventional Block of the Medial Brachial Cutaneous and the Intercostobrachial Nerves：A Retrospective Observational Study
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Nerve Block
Keywords: Ultrasound-Guided Plane Block
Conventional Block
Lead sponsor: Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine
Sponsor class: OTHER
First posted: 2019-04-26
Enrollment: 200
Sex: ALL
Minimum age (years): 18
Maximum age (years): 65
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Observational model: COHORT
Time perspective: RETROSPECTIVE
Sampling method: PROBABILITY_SAMPLE
Study population: 200

Brief summary: For superficial surgery of anteromedial and posteromedial surfaces of the upper arm, the medial brachial cutaneous nerve (MBCN) and the intercostobrachial nerve (ICBN) must be selectively blocked, in addition to an axillary brachial plexus block. We compared efficacy of ultrasound-guided (USG) versus conventional block of the MBCN and the ICBN.

Detailed description: The primary objective of our study was to compare the effectiveness of conventional and USG blocks of the MBCN and the ICBN in the axillary fossa. Our hypothesis was that the proportion of patients with complete anesthesia in the entire posteromedial and anteromedial surface of the arm would be greater if a USG technique were used, compared with a conventional technique. The secondary objectives were onset time of complete anesthesia, volume of local anesthetic used for the procedure, tourniquet tolerance during surgery, and ultrasound visibility of MBCN and ICBN.

Eligibility criteria: Inclusion Criteria:

* Surgery of the distal upper limb : hand, forearm, lower third of the arm ,including the elbow
* Urgent or planned surgery
* Locoregional anesthesia : axillary brachial plexus block, completed by a medial brachial cutaneous nerve block and an intercostobrachial nerve block

Exclusion Criteria:

* Refused to sign informed consent
* Pregnant women
* Allergic to the local anesthetic

Primary outcomes:
measure: Number of participants with complete anesthesia
timeFrame: At time 20 minutes after the medial brachial cutaneous nerve and the intercostobrachial nerve block
Secondary outcomes:
measure: Number of participants with complete anesthesia, with reduced sensitivity and with absence of anesthesia
timeFrame: At times 5, 10, 15, 20 minutes after the achievement of the medial brachial cutaneous nerve block and the intercostobrachial nerve block
measure: Volume of local anesthetic
timeFrame: After nerve block immediately
measure: Tourniquet tolerance
timeFrame: 3 hours after the achievement of the medial brachial cutaneous nerve block and the intercostobrachial nerve block
measure: Good ultrasound view of theses nerves before and after the injection of the local anesthetic
timeFrame: 5 minutes after the achievement of the medial brachial cutaneous nerve block and the intercostobrachial nerve block
measure: Bad ultrasound view of theses nerves before the injection and good ultrasound view of theses nerves after the injection of the local anesthetic
timeFrame: 5 minutes after the achievement of the medial brachial cutaneous nerve block and the intercostobrachial nerve block
measure: Bad ultrasound view of theses nerves before and after the injection of the local anesthetic
timeFrame: 5 minutes after the achievement of the medial brachial cutaneous nerve block and the intercostobrachial nerve block
Other outcomes:
Locations:
city: Cangzhou
country: China
facility: Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine
state: Hebei
Study officials:
affiliation: Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine
name: Ruizha Lv, M.D
role: PRINCIPAL_INVESTIGATOR
References: