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Table 3 Histomorphometry of the hippocampus CA1 segment on day 5

From: A randomized trial of the effects of the noble gases helium and argon on neuroprotection in a rodent cardiac arrest model

  Helium/oxygen Argon/oxygen Air/oxygen Kruskall - Wallis Non-ischemic sham
Fluoro-Jade [numbers of stained cells per mm] 148 [140–166] 154 [124–199] 145 [138–182] p = 0.83 0 [0–0]
pyknotic cells in CA1 [%] 53 [24–76] 59 [44–86] 80 [61–93] p = 0.09 0 [0–1]
CA1 cell layer atrophy (normalized: surface/length) [mm2/mm] 0.065 [0.058–0.083] 0.074 [0.061–0.080] 0.061 [0.043–0.069] p = 0.11 0.082 [0.077–0.088]
  1. Histological assessment of the hippocampus CA1 segment on day 5 shows a substantial damage after cardiac arrest, but there were no differences between the resuscitated animals. The animals in the non-ischemic sham group were not randomized, and thus indicated in italic style. These animals are not included in the main statistical analysis