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. 2015 Jan 17;25(1):e176. doi: 10.5812/ijp.176

Table 1. The Frequency of Clinical Signs and Symptoms in Children With Methadone Poisoning a.

Clinical Signs or Symptoms
Drowsiness 53 (91.4)
Miosis 44 (75.9)
Vomiting 40 (69.0)
Ineffective breath( any kind of breathing problem except apnea) 36 (62.1)
Apnea 31 (53.4)
Cyanosis 25 (43.1)
Seizure 5 (8.6)
Ataxia 4 (6.9)
Delirium 2 (3.4)

a Data are presented as No. (%).