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Table 2 Numbers and percentages of patients with intracranial hypotension that showed varying degrees of post-lumbar puncture headache after puncture with 22, 23, or 25 gauge needles

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

  22 G (n = 57)   23 G (n = 57)   25 G (n = 57)  
PLH (-) 15 26.3% 14 24.6% 20 35.1%
PLH (±) 6 10.5% 6 10.5% 9 15.8%
PLH (+) 26 45.6% 28 49.1% 27 47.4%
PLH (2+) 10 17.5% 9 15.8% 1 1.8%
  1. PLH(-): headache of usual severity; PLH(±): headache plus other symptoms; PLH(+): headache increased; PLH(2+): headache very severe. Although severe headache occurred more frequently with the larger needles, the differences were not significant.