THE DYNAMICS OF HISTOMORPHOLOGICAL CHANGES IN ACUTE BACLOFEN POISONING

Aim: to assess the dynamics of histolological changes in the lung under acute baclofen poisoning. Materials and methods: The study was performed on 20 male Wistar rats weighing 200-215 g and aged 20 weeks. The animals were divided into four groups (5 animals in each) – controls, group 1 (baclofen, 3h.), group 2 (baclofen, 4,5 h.) and group 3 (baclofen, 24 h.). Results: The thickness of intraalveolar septi in group 1 (baclofen, 3 h.) was considerably lower than in the group of controls. 4,5 hours after baclofen administration the thickness of intraalveolar septa was significantly higher than in group 1 (baclofen, 3 h.) and in the group of controls. 24 hours after baclofen administration the thickness of intraalveolar septa was significantly higher than in group 1 (baclofen, 3 h.) and in the group of controls. The diameter of the alveoli was considerably higher in all study groups than in the group of controls. The diameter of the alveoli 3 hours after baclofen administration was higher than 4,5 and 24 hours after baclofen administration, but the difference was not significant. Conclusion: In baclofen poisoning, a certain complex of general pathological processes in lungs develops. It includes circulatory disorders, increased vascular permeability, infiltration of intraaveolar septa. The quantitive assessment of the changes can be used to assess the severity of general pathological process in acute baclofen poisonings and to determine the exact time of the poisoning.