ASA> 3;
Coagulopathy;
Renal disease,
Liver disease,
History of recent gastro-intestinal bleeding
Pregnancy.
Diagnosis of chronic pain currently taking opioid pain medication or with a history of drug abuse.
Patients with a self-described allergy to ASA, acetaminophen, NSAIDS and codeine.
All patients receiving a brachial plexus block for anesthesia and/or analgesia

NCT02647788_exc_T1
Measurement
ASA
NCT02647788_exc_T2
Value
> 3
NCT02647788_exc_T3
Condition
Coagulopathy
NCT02647788_exc_T4
Condition
Renal disease
NCT02647788_exc_T5
Condition
Liver disease
NCT02647788_exc_T6
Condition
gastro-intestinal bleeding
NCT02647788_exc_T7
Temporal
recent
NCT02647788_exc_T8
Condition
Pregnancy
NCT02647788_exc_T9
Condition
chronic pain
NCT02647788_exc_T10
Drug
opioid pain medication
NCT02647788_exc_T11
Observation
history of
NCT02647788_exc_T12
Condition
drug abuse
NCT02647788_exc_T13
Condition
allergy
NCT02647788_exc_T14
Drug
ASA
NCT02647788_exc_T15
Drug
acetaminophen
NCT02647788_exc_T16
Drug
NSAIDS
NCT02647788_exc_T17
Drug
codeine
NCT02647788_exc_T18
Scope
ASA, acetaminophen, NSAIDS and codeine
NCT02647788_exc_T19
Procedure
brachial plexus block