Neck Anatomy and Phrenic Nerve Palsy After BPB

Seoul National University Hospital100 enrolled

Overview

The purpose of this study was to determine the association between the anatomical characteristics of neck and postoperative diaphragmatic paralysis in patients undergoing interscalene brachial plexus block before shoulder arthroscopic surgery. In addition, we want to identify risk factors for diaphragmatic paralysis after brachial plexus block. Through this study, we can find the basis for predicting the possibility of diaphragmatic paralysis after brachial plexus block according to the patient's anatomical characteristics and procedural factors.

Study Type

OBSERVATIONAL

Enrollment

100

Conditions

Diaphragm; Paralysis

Interventions

Interscalene brachial plexus blockPROCEDURE

Interscalene brachial plexus block is performed at ipsilateral side of the affected shoulder.

Eligibility

Sex: ALLMin age: 19 YearsMax age: 80 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Adult patients over 19 years undergoing shoulder arthroscopic surgery for a rotator cuff tear repair under general anesthesia Exclusion Criteria: * Patients who refused to participate in the trial * Patients with respiratory diseases such as asthma and chronic obstructive pulmonary disease * Patients with neurological abnormalities of the upper limb * Patients with a history of surgery around the neck on the ipsilateral side of the surgery site, radiation treatment history, etc. * Patients with a history of allergy or hypersensitivity reactions to local anesthetics

Locations (1)

Seoul National University Hospital

Seoul, South Korea

Outcomes

Primary Outcomes

Phrenic nerve palsy

Ultrasound is used to check the movement of the diaphragm on the operation side. The movement of the diaphragm is measured in centimeters when checked with M-mode in a forceful sniffing state.

Time frame: 10 minutes after the end of surgery

Secondary Outcomes

Neck length

The neck length is measured by drawing a straight line from the mandible angle on the side to the middle point of the clavicle with a tape measure.

Time frame: Before induction, 1-2 minutes

Neck girth

The neck circumference length is measured by a tape ruler over the upper plane of the spinous process of the 7th cervical spine at the back and the lower plane of the thyroid cartilage at the front side in the patient's sitting position.

Time frame: Before induction, 1-2 minutes

Height

Height (cm)

Time frame: At admission, 1-2 minutes

Weight

Weight (kg)

Time frame: At admission, 1-2 minutes

Sex

Time frame: At admission, 1-2 minutes

The method of brachial plexus block

Specific location where the brachial plexus block was performed (Specific location of needle tip where local anesthetic is injected)

Time frame: During brachial plexus block, 10 minutes

The volume (dose) of local anesthetics injected

Data from ClinicalTrials.gov

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