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NCT Number: NCT03928574

USG Block of Cutaneous Nerves of the Arm

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.

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Key information

Conditions

Nerve Block

Age range

18 year–65 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine

Cangzhou, Hebei, 061001, China

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Ultrasound-Guided Plane Block

Procedure

Ultrasound-Guided Plane Block Medial Brachial Cutaneous and the Intercostobrachial Nerves

Conventional Block

Procedure

Conventional Block Medial Brachial Cutaneous and the Intercostobrachial Nerves

Primary outcomes

  1. Number of participants with complete anesthesia

    Time frame: At time 20 minutes after the medial brachial cutaneous nerve and the intercostobrachial nerve block

    Number of participants with complete anesthesia of the arm in region innervated by the MBCN and the ICBN

Secondary outcomes

  1. Number of participants with complete anesthesia, with reduced sensitivity and with absence of anesthesia

    Time frame: At times 5, 10, 15, 20 minutes after the achievement of the medial brachial cutaneous nerve block and the intercostobrachial nerve block

    Number of participants with complete anesthesia, with reduced sensitivity and with absence of anesthesia at times 5, 10, 15, 20 minutes (except primary outcome) in the areas of the medial brachial cutaneous nerve and the intercostobrachial nerve

  2. Volume of local anesthetic

    Time frame: After nerve block immediately

    The volume (in milliliters) of 1% lidocaine used for the medial brachial cutaneous nerve and the intercostobrachial nerve block

  3. Tourniquet tolerance

    Time frame: 3 hours after the achievement of the medial brachial cutaneous nerve block and the intercostobrachial nerve block

    Number of patients with comfortable feeling, with unpleasant sensations and with pains during surgery, in the areas of the medial brachial cutaneous nerve and the intercostobrachial nerve

  4. Good ultrasound view of theses nerves before and after the injection of the local anesthetic

    Time frame: 5 minutes after the achievement of the medial brachial cutaneous nerve block and the intercostobrachial nerve block

    Number of participants (of the ultrasound-guided group) with good ultrasound view of theses nerves before and after the injection of the local anesthetic

  5. Bad ultrasound view of theses nerves before the injection and good ultrasound view of theses nerves after the injection of the local anesthetic

    Time frame: 5 minutes after the achievement of the medial brachial cutaneous nerve block and the intercostobrachial nerve block

    Number of participants (of the ultrasound-guided group) with bad ultrasound view of theses nerves before the injection and good ultrasound view of theses nerves after the injection of the local anesthetic

  6. Bad ultrasound view of theses nerves before and after the injection of the local anesthetic

    Time frame: 5 minutes after the achievement of the medial brachial cutaneous nerve block and the intercostobrachial nerve block

    Number of participants (of the ultrasound-guided group) with bad ultrasound view of theses nerves before and after the injection of the local anesthetic

Sponsors and collaborators

Lead sponsor

Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine

Other

Registry information

Official study title

Ultrasound-Guided Plane Versus Conventional Block of the Medial Brachial Cutaneous and the Intercostobrachial Nerves：A Retrospective Observational Study

Important dates

Study start
2019
Primary completion
2021
Study completion
2021
First posted
Apr 26, 2019
Registry last updated
Apr 9, 2024

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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