long-term use of analgesics,sedatives or non steroidal anti-inflammatory drugs history.
known for dexmedetomidine or other drugs allergy in this study.
cannot communicate.
preoperative systolic blood pressure <90 mmHg, or the heart rate <50/min.

NCT02552459_exc_T1
Multiplier
long-term use
NCT02552459_exc_T2
Drug
analgesics
NCT02552459_exc_T3
Drug
sedatives
NCT02552459_exc_T4
Drug
non steroidal anti-inflammatory drugs
NCT02552459_exc_T5
Observation
history
NCT02552459_exc_T6
Scope
analgesics,sedatives
NCT02552459_exc_T7
Drug
dexmedetomidine
NCT02552459_exc_T8
Qualifier
other
NCT02552459_exc_T9
Drug
drugs
NCT02552459_exc_T10
Condition
allergy
NCT02552459_exc_T11
Scope
dexmedetomidine or other drugs
NCT02552459_exc_T12
Observation
cannot communicate
NCT02552459_exc_T13
Measurement
preoperative systolic blood pressure
NCT02552459_exc_T14
Value
<90 mmHg
NCT02552459_exc_T15
Measurement
heart rate
NCT02552459_exc_T16
Value
<50/min