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

Performing spinal anaesthesia using the conventional popping method with a 27-gauge (27G) spinal needle is technically difficult. In this study, we compared the aspiration and conventional popping method for spinal anaesthesia using 27G Quincke-type needles.