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Table 1: 
Breakdown of data on failed and repeat spinal punctures
Reason for Initial FGLP Failure (No.)No. of Patients Who Returned for a Repeat Spinal Puncture/No. of Patients with Initial FGLP FailureNo. of Successful Repeat Spinal Punctures/No. of Patients Who Returned for a Repeat Spinal Puncture Attempt
Lack of egress of CSF in the LP needle confirmed in the spinal canal (n = 37)15/37 (40.5%)14/15 (93.3%)
Degenerative changes (n = 8)2/8 (25%)2/2 (100%)
Patient’s inability to follow commands and/or due to pain and anxiety (n = 10)6/10 (60%)6/6 (100%)
High BMI (n = 3)1/3 (33%)1/1 (100%)
Patient in lateral decubitus position (n = 2)2/2 (100%)2/2 (100%)
Postsurgical scarring or instrumentation (n = 2)1/2 (50%)1/1 (100%)
Unknown (n = 1)1/1 (100%)1/1 (100%)
Total (n = 63)28/63 (44%)27/28 (96%)