Interscalene Brachial Plexus Block Washout to Reverse Inadvertent Phrenic Nerve Blockade
NCT ID: NCT03677778
Last Updated: 2022-08-02
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
43 participants
INTERVENTIONAL
2018-10-22
2022-07-07
Brief Summary
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The nerve block may be able to use saline solution to wash out the local anesthetic and potentially reverse this respiratory side effect. Specifically, the goal of this study is to determine if the injection of saline through the nerve block catheter reverses blockade of the phrenic nerve supplying the diaphragm, without affecting the ability of the nerve block to provide pain control after surgery.
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
DOUBLE
Study Groups
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Placebo group
After surgery, in the post-operative recovery room, patients randomized to both the intervention and control groups will have 10cc 0.5% ropivacaine bolused via their nerve catheters. After 30 minutes, the following will be measured/assessed: spirometry data, pain scores (using the Numeric Rating Scale), and, if time is sufficient, bilateral diaphragmatic excursion via ultrasonography and brachial plexus motor and sensory exams. This control group will have no normal saline injected into their nerve catheter (no intervention). Then, both the control and treatment groups will have the following measured/assessed after 5, 15 and 30 minutes: spirometry data, pain scores (using the Numeric Rating Scale), and, if time is sufficient, bilateral diaphragmatic excursion via ultrasonography and brachial plexus motor and sensory exams. Investigators will be blinded to whether the patient is in the intervention or treatment group.
Placebo
With the catheter covered, placebo group patients will go through the same steps as the treatment group, but no solution will be injected into the interscalene nerve block catheter.
Treatment group
After surgery, in the post-operative recovery room, patients randomized to both the intervention and control groups will have 10cc 0.5% ropivacaine bolused via their nerve catheters. After 30 minutes, the following will be measured/assessed: spirometry data, pain scores (using the Numeric Rating Scale), and, if time is sufficient, bilateral diaphragmatic excursion via ultrasonography and brachial plexus motor and sensory exams. This group will then have 30ml of normal saline injected into their nerve catheter. Then, both the control and treatment groups will have the following measured/assessed after 5, 15 and 30 minutes: spirometry data, pain scores (using the Numeric Rating Scale), and, if time is sufficient, bilateral diaphragmatic excursion via ultrasonography and brachial plexus motor and sensory exams. Investigators will be blinded to whether the patient is in the intervention or treatment group.
Normal saline injected via interscalene nerve catheter
With the catheter covered, treatment group patients will receive a normal saline (NS) bolus regimen (30cc 0.9% NS) via their interscalene nerve block catheter.
Interventions
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Normal saline injected via interscalene nerve catheter
With the catheter covered, treatment group patients will receive a normal saline (NS) bolus regimen (30cc 0.9% NS) via their interscalene nerve block catheter.
Placebo
With the catheter covered, placebo group patients will go through the same steps as the treatment group, but no solution will be injected into the interscalene nerve block catheter.
Eligibility Criteria
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Inclusion Criteria
Exclusion Criteria
* Pregnant
* Any condition impairing patient's ability to consent to participation in study, and an existing condition contraindicating a nerve block, i.e. nerve injury, existing bleeding disorder, infection in the vicinity of the block, and patient refusal.
18 Years
ALL
No
Sponsors
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Stanford University
OTHER
Responsible Party
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Chi-Ho Ban Tsui
Professor
Principal Investigators
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Ban Tsui, MD
Role: PRINCIPAL_INVESTIGATOR
Stanford University
Locations
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Stanford Health Care (SHC)
Palo Alto, California, United States
Countries
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References
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Urmey WF, Talts KH, Sharrock NE. One hundred percent incidence of hemidiaphragmatic paresis associated with interscalene brachial plexus anesthesia as diagnosed by ultrasonography. Anesth Analg. 1991 Apr;72(4):498-503. doi: 10.1213/00000539-199104000-00014.
Urmey WF, McDonald M. Hemidiaphragmatic paresis during interscalene brachial plexus block: effects on pulmonary function and chest wall mechanics. Anesth Analg. 1992 Mar;74(3):352-7. doi: 10.1213/00000539-199203000-00006.
Lenters TR, Davies J, Matsen FA 3rd. The types and severity of complications associated with interscalene brachial plexus block anesthesia: local and national evidence. J Shoulder Elbow Surg. 2007 Jul-Aug;16(4):379-87. doi: 10.1016/j.jse.2006.10.007. Epub 2007 Apr 19.
Zink W, Graf BM. Local anesthetic myotoxicity. Reg Anesth Pain Med. 2004 Jul-Aug;29(4):333-40. doi: 10.1016/j.rapm.2004.02.008.
Katircioglu K, Ozkalkanli MY, Kalfaoglu H, Sannav S, Ozgurbuz U, Savaci S. Reversal of prilocaine epidural anesthesia using epidural saline or ringer's lactate washout. Reg Anesth Pain Med. 2007 Sep-Oct;32(5):389-92. doi: 10.1016/j.rapm.2007.06.004.
Park EY, Kil HK, Park WS, Lee NH, Hong JY. Effect of epidural saline washout on regression of sensory and motor block after epidural anaesthesia with 2% lidocaine and fentanyl in elderly patients. Anaesthesia. 2009 Mar;64(3):273-6. doi: 10.1111/j.1365-2044.2008.05746.x.
Sitzman BT, DiFazio CA, Playfair PA, Stevens RA, Hanes CF, Herman TB, Yates HK, Leisure GS. Reversal of lidocaine with epinephrine epidural anesthesia using epidural saline washout. Reg Anesth Pain Med. 2001 May-Jun;26(3):246-51. doi: 10.1053/rapm.2001.22587.
Ip VH, Tsui BC. Continuous interscalene block: the good, the bad and the refined spread. Acta Anaesthesiol Scand. 2012 Apr;56(4):526-30. doi: 10.1111/j.1399-6576.2012.02650.x. Epub 2012 Feb 16.
Courtney KR, Kendig JJ, Cohen EN. Frequency-dependent conduction block: the role of nerve impulse pattern in local anesthetic potency. Anesthesiology. 1978 Feb;48(2):111-7. No abstract available.
Gerber LN, Sun LY, Ma W, Basireddy S, Guo N, Costouros J, Cheung E, Boublik J, Horn JL, Tsui BC. Clinical effect of normal saline injectate into interscalene nerve block catheters given within one hour of local anesthetic bolus on analgesia and hemidiaphragmatic paralysis. Reg Anesth Pain Med. 2021 Feb;46(2):124-129. doi: 10.1136/rapm-2020-101922. Epub 2020 Nov 12.
Other Identifiers
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46830
Identifier Type: -
Identifier Source: org_study_id
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