Prospective randomized comparison of cerebrospinal fluid aspiration and conventional popping methods using 27-gauge spinal needles in patients undergoing spinal anaesthesia

Table 2 Profiles related to dural puncture between patients undergoing aspiration or conventional popping for spinal anesthesia

Variable	Dural puncture		P value
Variable	Popping group (n = 43)	Aspiration group (n = 45)	P value
First attempt, success/failure cases, (n/n)	31/12	42/3	0.019*
First passage, success/failure cases, (n/n)	15/28	25/20	0.085
Number of passage (n)	2 (3)	1 (2)	0.064
Successful attempt time (s)	25 (52)	22 (19)	0.254
Total procedure time (s)	43 (109)	22 (20)	0.023*

Data are presented as raw count or median (interquartile range) unless otherwise indicated

ISSN: 1471-2253