Ultrasound guided femoral nerve blocks as a compulsory pain protocol in femoral neck fractures

Table 2 The difference in outcomes between ultrasound guided femoral nerve block and standard analgesia protocol

Characteristic	Overall (n = 1577)	Standard analgesia protoco (n = 1190)	US guided femoral nerve block (n = 387)	P value1
Pre surgery VAS score, mean (SD)	1.73 (2.57)	1.82 (2.59)	1.46 (2.49)	0.001
12 hours post-surgery VAS score, mean (SD)	0.70 (1.61)	0.68 (1.57)	0.75 (1.73)	0.3
24 hours post surgery VAS score, mean (SD)	0.81 (1.60)	0.81 (1.55)	0.83 (1.74)	0.058
Stroke, n/N (%)	235/1577 (15)	184/1190 (15)	51/387 (13)	0.3
Sepsis, n/N (%)	19/1577 (1.2)	16/1190 (1.3)	3/387 (0.8)	0.6
Re hospitalization times, mean (SD)	1.35 (2.26)	1.46 (2.34)	0.99 (1.96)	< 0.001
Mortality, n/N (%)	439/1577 (28)	376/1190 (32)	63/387 (16)	< 0.001

¹Statistical tests performed: Wilcoxon rank-sum test; χ² test of independence; Fisher's exact test.

US: Ultrasound; VAS: Visual analogue scale.