Delayed Onset Postoperative Spinal Epidural Hematoma after Lumbar Spinal Surgery: Incidence, Risk Factors, and Clinical Outcomes

Table 4

Blood pressure at different time point.

	Group A (early onset)	Group B (delayed onset)	Group C (control group)
SBP at admission (mmHg)				0.001	0.047	0.71
DBP at admission (mmHg)				0.07	0.56	0.64
Intraoperative SBP (mmHg)				0.16	0.82	0.43
Intraoperative DBP (mmHg)				0.60	0.26	0.77
SBP after extubation (mmHg)				<0.05	<0.05	0.85
DBP after extubation (mmHg)				0.016	0.13	0.16
Postoperative SBP (mmHg)				<0.05	<0.05	0.24
Postoperative DBP (mmHg)				0.11	0.50	0.20

Values in bold indicates value < 0.05, which is considered as significance difference. SBP: systolic blood pressure; DBP: diastolic blood pressure.