Hypoxemia occurrence
hypoxemia
The DEX group had a significantly lower total incidence of hypoxemia than the MID group (5.68% vs 50%, The population pyramid for the total frequency of hypoxemia in the dexmedetomidine (DEX) and midazolam (MID) groups. The distribution of hypoxemia in the DEX and MID groups was different as assessed by visual inspection of the population pyramids. The Mann–Whitney U test reflects the occurrence of hypoxemia