Sparing Diaphragm; ISO Block Versus Low Volume Scalene Block

Shoulder Analgesia Sparing Diaphragm; ISO Block Versus Low Volume Scalene Block. A Randomized Controlled Double Blind Study

Status

UNKNOWN

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03331237

Enrollment

Registered

2017-11-06

Start date

2017-10-09

Completion date

2018-04-30

Last updated

2017-11-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Shoulder Arthropathy Associated With Other Conditions

Brief summary

For shoulder analgesia, both ISO block and low volume scalene (LVS) block (using 5 ml of local anesthetics) are suggested to have a low incidence of hemi-diaphragmatic pariesis (HDP). The aim of this study was to compare the incidence of HDP and the analgesic efficacy of the LVS block versus ISO block.

Interventions

PROCEDUREscalene block

scalene block using 5ml of ropivacaine

PROCEDUREISO block

ISO block is a combined block of suprascapular nerve and brachial plexus cords using a single puncture

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

PREVENTION

Masking

QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Inclusion criteria

* patients who were scheduled for arthroscopic shoulder surgery

Exclusion criteria

* aged \<18y * BMI \>35, * ASA greater \>III, * an infection at the injection site * has a contraindication for laryngeal mask or the medications used in this study.

Design outcomes

Primary

Measure	Time frame	Description
hemi-diaphragmatic pariesis	2-4 hours	diaphragmatic caudal displacement will be measured (in cm) with real time ultrasound before the block performance and after the procedure

Secondary

Measure	Time frame	Description
analgesic efficacy (block success)	2-4 hours	successful block = pain free (VAS 0) in recovery unit. VAS will be used to evaluate the pain (0 = pain free, 10= most sever pain)
patient satisfaction	24 hours	if the patient is satisfied with the analgesia technique or not
duration of analgesia	24 hours	duration between the block performance and the first requesting of pain killer (morphine)
total morphine dose	24 hours	the total morphine consumption within 24 hrs after the block performance

Countries

United Arab Emirates

Contacts

Primary ContactSabah Zahooruddin

s.zahooruddin@helathpoint.ae009712 4929000

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026