To clarify the downward trend of blood pressure affected by bone cement implantation during shoulder replacement operations.
A total of 350 cases of proximal humeral fracture are planned to be recruited and receive semi-shoulder replacement in Department of Orthopedics and Trauma，Peking University People's Hospital．The blood pressure data are collected from patients' anesthesia records. Both the systolic and diastolic blood pressure are recorded at four time spots during operation: the time before using of bone cement (time period A), 0-5 min after using cement (time period B), 5-10 min after using cement (time period C) and 10-15min after using cement (time period D). The data of blood pressure are collected according to anesthesia records．
Study Type
OBSERVATIONAL
Enrollment
350
proximal humeral fracture receiving hemi-shoulder replacement with cement when inserting the stem
Change from Baseline Systolic Blood Pressure
the systolic blood pressure after insert the cemented stem
Time frame: Change from Baseline Systolic Blood Pressure at 15 mins
Change from Baseline Diastolic Blood Pressure
the diastolic blood pressure after insert the cemented stem
Time frame: Change from Baseline Diastolic Blood Pressure at 15 mins
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