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Table 3 The percentage residual radioisotope activity in the CSF (% ± SD) in patients with differing degrees of post lumbar headache at 1 h, 3 h, 5 h, and 24 h after injection.

From: Cerebrospinal fluid leakage after radioisotope cisternography is not influenced by needle size at lumbar puncture in patients with intracranial hypotension

  1 h 3 h 5 h 24 h
PLH (-) (n = 49) 95.0 (± 4.6) 83.0 (± 18.5) 71.3 (± 19.2) 22.0 (± 11.8)
PLH (±) (n = 21) 95.5 (± 5.9) 77.7 (± 10.6) 64.8 (± 13.1) 19.7 (± 9.7)
PLH (+) (n = 81) 94.3 (± 4.9) 74.3 (± 18.4) 59.0 (± 20.9) 17.0 (± 11.5)
PLH (2+) (n = 20) 93.2 (± 6.0) 74.8 (± 20.0) 54.7 (± 23.9) 14.7 (± 9.8)
  1. PLH(-): headache of usual severity or less; PLH(±): headache of usual severity or less headache, but with other aggravating symptoms; PLH(+): headache increased after lumbar puncture; PLH(2+): headache more severe than or equal to the most severe headache ever experienced. The (+) and (2+) groups tended to have more CSF leakage but the differences were not significant.