- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01784601
Incidence of Hemidiaphragmatic Palsy After Interscalene Block
Incidence of Hemidiaphragmatic Palsy After Single Shot Interscalene Block for Pain Relief in Shoulder Surgery
Primary objective of this study is to find out the incidence of hemi-diaphragmatic palsy associated with interscalene block done under ultrasound guidance.
Primary hypothesis:
• There is an incidence of hemidiaphragmatic palsy ranging fron 33-100 % after an interscalene block.
Secondary hypothesis
- The incidence of hemidiaphragmatic palsy is much less than 33% when the block is done using ultrasound.
- The incidence of hemi-diaphragmatic palsy is directly proportional to volume of local anaesthetic injected.
- The incidence of hemi-diaphragmatic palsy is directly proportional to concentration of local anaesthetic injected.
Study Overview
Status
Conditions
Detailed Description
Patients of either sex belonging to American Society of Anesthesiologists status 1-3 scheduled for elective shoulder surgery as an outpatient basis, planned for an interscalene block will be included in this study over a period of one year.
Potential patients will be identified from the surgeons' list. The PI or one of the co-investigators will contact them in the surgical day care in the morning of surgery and will be given information about the study. Documented informed consent will be obtained.
After obtaining informed consent, they will be examined for their diaphragm position using an ultrasound prior to block placement .
All patients will have the block initiated in the block room using standard monitors and sedation as per the standard practice in this hospital.
The patients will undergo an ultrasound examination for their diaphragm position 5 mins and 10 mins after the completion of the nerve block. Ipsilateral ( same side as the block) and contralateral ( opposite side of block) hemi-diaphragmatic excursion will be measured with the patients in supine position during quiet inspiration ,deep inspiration and forceful sniff.
In addition, bedside spirometry using a compact spirometer will be performed and FVC, FEV1 and PEFR measurements will be performed.The oxygen saturation and any evidence of dyspnea or shortness of breadth will be noted at the above mentioned intervals after the completion of the block.
All patients will receive general anesthesia in the operating room. The patient will receive IV opioids during the procedure if required.
The above mentioned data will be collected postoperatively in the recovery room 30 mins, after arrival.
Study Type
Enrollment (Estimated)
Contacts and Locations
Study Locations
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Ontario
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London, Ontario, Canada, N6A 4V2
- St. Joseph's Health Care
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Sampling Method
Study Population
Control Group:
We will be including all patients undergoing shoulder surgery not scheduled for a nerve block.
Description
Inclusion Criteria:
Control Group:
Age between 18 - 80 years old Elective shoulder surgery Same day discharge Inform consent signed
Exclusion Criteria:
Ongoing Major psychiatric problems Narcotic Abuse/ Drug dependency Mental impairment / inability to cooperate with postoperative evaluation/Inability to give informed consent
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Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
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Control Group
We will be including all patients undergoing shoulder surgery not scheduled for a nerve block.
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Study Group
We will be including all patients undergoing shoulder surgery scheduled for a nerve block.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Primary outcome of this study is to find out the incidence of hemi-diaphragmatic palsy associated with interscalene block done under ultrasound guidance. Primary hypothesis:
Time Frame: 1 year
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We intend to scan all patients undergoing ISB who consent to be part of the study, for the diaphragm excursion to find out the incidence at our institute.
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1 year
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Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
In addition we will also do Spirometric analysis and assess for symptomatic respiratory insufficiency/ distress. Thus we can find the incidence of clinically significant hemi-diaphragmatic palsy.
Time Frame: 1 year
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1 year
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Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Shalini Dhir, FRCPC, St. Joseph's Health Care
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimated)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 103337
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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