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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT05386095
Other study ID # MS-621-2021
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date May 29, 2022
Est. completion date November 10, 2022

Study information

Verified date March 2023
Source Cairo University
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Postoperative pain is a common manifestation in orthopedic patients, mainly due to intraoperative tissue damage and inadequate intraoperative pain assessment and management .Axillary brachial plexus block provides motor and sensory block with the distribution of the median, radial, ulnar and musculocutaneous branches so can be conducted with upper limb orthopedic surgery in hand, rest and elbow surgery distal to the cubital fossa . In this study the investigators will investigate (0.19%) and (0.25%) bupivacaine for postoperative motor power recovery and post-operative analgesic efficacy in ultrasound guided axillary brachial plexus block among pediatric patient undergoing below elbow orthopedic surgery.


Description:

Patients meeting inclusion criteria will be randomly assigned to receive either: (Group A: n=30)will receive 0.25% bupivacaine plus 1 µg/kg dexmedetomidine . (Group B: n=30) will receive 0.19% bupivacaine plus 1 µg/kg dexmedetomidine. Using computer generated number and concealed using sequentially numbered, sealed opaque envelope technique. There will be no restrictions or stratifications in the randomization process. The allocation envelope will be opened by the assistant lecturer at the time of anesthetic preparation. All children will be anaesthetized in accordance with the local policy of the Abu El-Reesh pediatric hospital-Cairo university's pediatric anaesthetic unit. Except for oral clear liquids intake 2 hours before surgery, all children will fast for 6 hours. Patients will attend in the preparation room one hour before the operation to get a preoperative checkup, as well as their age and body weight will be recorded. Premedicated by intramuscular injection of atropine 0.02 mg/Kg and midazolam 0.2 mg/Kg . On arriving the operating room, heart rate (HR) ,oxygen saturation and non-invasive blood pressure will be continuously recorded, using standard monitor (Dräger infinity vista XL). All patients will be induced with inhalational anesthetic using (100%) O2 + Sevoflurane. After deepening of the anesthesia, I.V. line will be inserted and atracurium 0.5mg/kg and fentanyl 1μg/kg patients will be given, then the patients will be intubated by appropriate size of endotracheal tube volume control ventilation (VCV) 5-7 ml/kg and respiratory rate will be adjusted to keep and PaCO2 levels between 30-35 mmHg using (G.E-Datex-Ohmeda, Avance CS2, USA) anesthesia machine. Anesthesia will be maintained with an isoflurane 1 MAC with 50% oxygen in air, with the goal of keeping the bispectral index (BIS) measurement between (40-60), and atracurium top-ups of 0.1mg/kg will be given every 30 minutes for neuromuscular blockade. Axillary brachial plexus block will be conducted with the patient in supine position under general anesthesia. In Group A:(0.25 %bupivacaine group) ultrasound guided Axillary brachial plexus block will be conducted using a total volume of 0.5ml/kg of bupivacaine 0.25% + 1 µg/kg dexmedetomidine. In Group B:(0.19%bupivacaine group)ultrasound guided Axillary brachial plexus block will be conducted using a total volume of 0.5ml/kg of bupivacaine 0.19% + 1 µg/kg dexmedetomidine. The surgical procedure will be start after 15-20 min. If there is an increase in heart rate or mean arterial blood pressure of more than 20% of the baseline value after skin incision then it will be considered as block failure and these patients will be excluded from the study. 1-2ug/kg intravenous fentanyl will be given to failed block. At the end of surgery, residual neuromuscular block will be antagonized with IV neostigmine 0.05 mg/kg and atropine 0.02mg/kg. All patients will receive 15mg/kg paracetamol IV. At recovery room motor power will be assisted using Modified Bromage scale by attending anesthesiologists who will be blinded to the study groups, then each 30 min till full recover of motor power . The post operative pain assessment in the PACU and the ward, patient will be assessed immediately postoperatively and then at 1st, 4th, 8th, 12th hour post-operatively using (FLACC score) for Pain assessment.


Recruitment information / eligibility

Status Completed
Enrollment 60
Est. completion date November 10, 2022
Est. primary completion date October 22, 2022
Accepts healthy volunteers No
Gender All
Age group 4 Years to 14 Years
Eligibility Inclusion Criteria: 1. American society of Anesthesiologists (ASA )class I-II 2. Duration of surgery less than 1 hour. Exclusion Criteria: 1. Parent refusal. 2. Prolonged procedure exceeding 1 hour. 3. Patients with apparent infection at site of needle insertion. 4. Patients with any coagulation disorder(Platelets = 50,000 and/or international normalized ratio INR> 1.5) 5. Patients with known neuropathy or brachial plexus injury. 6. Patients with any cardiac, hepatic, renal failure. 7. Patient with known sensitivity to local anesthetic drugs.

Study Design


Intervention

Procedure:
0.25%Bupivacaine Axillary brachial plexus block
Axillary brachial plexus block will be induced with patient in supine position under GA with the linear probe ultrasound , the operating arm will be abducted by 70 , externally rotated, and the elbow will be flexed to ~90. Within the axillary crease the probe will be placed in sagittal position bounded by the pectoralis major antero-medially and the latissimus dorsi and teres major posteromedial. The median nerve lies between 9 and 12 o'clock position above the axillary artery and below the biceps muscle; (ii) the ulnar nerve located superficially between the axillary vein and artery (iii) the radial nerve lies above the conjoint tendon of the teres major and latissimus dorsi (iiii) The musculocutaneous nerve lies between biceps and coracobrachialis muscle .The block will be applied by 22 gag needles at cephalic side of the probe. A total volume of (0.5ml/kg) of 0.25% Bupivacaine plus 1 µg/kg dexmedetomidine will be used.this volume will be divided equally among the four nerves.
0.19% Bupivacaine Axillary brachial plexus block
Axillary brachial plexus block will be induced with patient in supine position under GA with linear probe ultrasound , the operating arm will be abducted by 70 , externally rotated, and the elbow will be flexed to ~90. Within the axillary crease the probe will be placed in sagittal position bounded by the pectoralis major antero-medially and the latissimus dorsi and teres major posteromedial. The median nerve lies between 9 and 12 o'clock position above the axillary artery and below the biceps muscle; (ii) the ulnar nerve located superficially between the axillary vein and artery (iii) the radial nerve lies above the conjoint tendon of the teres major and latissimus dorsi (iiii) The musculocutaneous nerve lies between biceps and coracobrachialis muscle.The block will be applied by 22 gag needles at cephalic side of the probe. A total volume of (0.5ml/kg) of 0.19% Bupivacaine plus 1 µg/kg dexmedetomidine will be used.this volume will be divided equally among the four nerves.

Locations

Country Name City State
Egypt Kasr Alainy Hospitals Giza Cairo

Sponsors (1)

Lead Sponsor Collaborator
Cairo University

Country where clinical trial is conducted

Egypt, 

Outcome

Type Measure Description Time frame Safety issue
Primary Motor power using modified bromage scale on admission to the PACU (post anesthesia care unit) Modified Bromage scale is a scale designed to assess degree of motor power as shown; Grade Definition 4 Full muscle strength in relevant muscle groups 3 Reduced strength, but able to move against resistance 2 Ability to move against gravity, but not against resistance
1 Discrete movements (trembling) of muscle groups 0 Lack of movement
on admission to the PACU (10 minutes after extubation)
Secondary Pain score at 0,1,2, 4, 8 and 12 hours postoperative. FLACC is a behavioral pain assessment scale used for nonverbal or preverbal patients who are unable to self-report their level of pain. Pain is assessed through observation of 5 categories including face, legs, activity, cry, and consolability. 12 hours
Secondary cumulative 24 hours opioid consumption amount of pethidine given to the patient post operative(mg/24 hour) 24 hours
Secondary intraoperative heart rate Heart rate of the patient intraoperatively (beat/minute) every 15 minutes intraoperative till end of surgery (up to 1 hours)
Secondary intraoperative mean blood pressure mean arterial blood pressure of the patient intraoperatively (mmHg) every 15 minutes intraoperatively till end of surgery (up to 1 hour)
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