Age >= 65 years, < 90 years;
Scheduled to undergo surgery for primary solid organ cancer under general anesthesia, with an expected duration of surgery >=2 hours;
Planned to use patient-controlled intravenous analgesia after surgery;
Provide written informed consent.

NCT03012984_inc_T1
Person
Age
NCT03012984_inc_T2
Value
>= 65 years, < 90 years
NCT03012984_inc_T3
Mood
Scheduled
NCT03012984_inc_T4
Procedure
surgery
NCT03012984_inc_T5
Qualifier
primary
NCT03012984_inc_T6
Condition
solid organ cancer
NCT03012984_inc_T7
Procedure
general anesthesia
NCT03012984_inc_T9
Qualifier
patient-controlled
NCT03012984_inc_T10
Procedure
intravenous analgesia
NCT03012984_inc_T11
Temporal
after surgery
NCT03012984_inc_T12
Procedure
surgery
NCT03012984_inc_T13
Reference_point
surgery