The Effect of Intrathecal Bupivacaine Plus Dextrose 5% and Fentanyl Compared with Bupivacaine Alone on the Onset and Duration of Analgesia in Patients Undergoing Lower-Limb Orthopedic Surgery

Table 3

Comparison of mean systolic blood pressure of two groups at different times.

	Study group time
	Control mean ± SD	Intervention mean ± SD
Primary	136.8 ± 11.6^b	136 ± 1.13	t = 0.204
			5 minutes	121 ± 6.9^ab	125.18 ± 15^a	t = 1.190
10 minutes	115.4 ± 8.9^ac	123.4 ± 16.5^a				t = 1.873
			15 minutes	117.8 ± 8.9^ab	125 ± 12.7^a	t = 2.049
30 minutes	115 ± 8.2^abcd	125.5 ± 12.3a				t = 3.178
			45 minutes	114.3 ± 8^ac	126 ± 11.6^a	t = 3.701
60 minutes	113.6 ± 8.5^acde	125.7 ± 11.6^a				t = 3.739
			Onset injection	111.7 ± 8.3^a	123 ± 10.1^a	t = 3.861
6 hours	120.5 ± 10.4^abg	127.7 ± 7.7^b				t = 2.486
			12 hours	123.7 ± 11.1^abfg	130.9 ± 12.1	t = 1.951
24 hours	122.3 ± 6.5^abefg	129.5 ± 8.2^b				t = 3.056
			Statistical test of repeated analysis of variance	F = 45.097	F = 7.912