Prospective, patient-blinded study utilizing a novel Continuous Reassessment Method that concomitantly considers both block success and block side effects (lung dysfunction) for brachial plexus nerve blocks.
Success or failure of the brachial plexus block for any given volume will be determined by the verbal analogue pain scale score obtained 60 minutes after surgical end time. Volumes will be determined by continuous reassessment method.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
150
Dose varied by 5mL of 0.5% Ropivacaine
Virginia Mason Medical Center
Seattle, Washington, United States
RECRUITINGBlock Success
Block success measured by pain (11-point VAS)
Time frame: 60min after surgery
Lung Function
Block success as measured by preservation of lung function (Vital Capacity in L)
Time frame: 60 mins after surgery
Block Success
Block Success measured by opioid (mcg of fentanyl delivered)
Time frame: 60 mins after surgery
Diaphragm Excursion
Change in Movement of Diaphragm in cm
Time frame: 60 minutes after surgery
Vital Capacity
Change in Vital Capacity measured in L
Time frame: 60 minutes after surgery
Pulse Oximetry
Change in Pulse Oximetry Value
Time frame: 60 minutes after surgery
Side Effects
Rate of Dyspnea, Horner's, Hoarseness
Time frame: 60 minutes after surgery
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.