Assessment: Prevention of post–lumbar puncture headaches

2] They reported several observations. 1. The average frequency of post-LP HAs (PLPHA) in patients after diagnostic LP (excluding myelography, pneumoencephalography, and cisternal puncture), excluding also patients whose condition might reduce the reliability to report HA, was 32%. For nonobstetric spinal anesthesia, the average frequency was 13%. For obstetric spinal anesthesia, the average frequency was 18%. 2. In reports in which patients received special measures to prevent PLPHA, the average frequencies were 6% for diagnostic LPs, 5.5% for nonobstetric spinal anesthesia, and 6.2% for obstetric spinal anesthesia. The actual frequencies in individual series ranged from 0 to 18%. 3. The frequency of PLPHA was 36% in their own series of 105 normal individuals, 30% in 317 patients with diagnostic LPs, and 2% definite and 2% probable in 100 patients undergoing spinal anesthesia (but 30 patients with HAs of other types were excluded from the latter count).