DETERMINATION OF THE PRESENCE AND DURATION OF A LUCID INTERVAL FOR TRAUMATIC SUBDURAL HEMATOMAS
The aim of the study is to develop a method for objectively determining the presence and duration of the lucid interval for traumatic subdural hematomas. A linear discriminant analysis of 359 cases of fatal traumatic supratentorial subdural hematomas, the course of which took place under medical supervision. A discriminant model has been developed that allows determining the probabilities of the presence and absence of a lucid interval during closed or open non-penetrating craniocerebral trauma with the presence of supratentorial subdural hematomas. The model includes the presence of subarachnoid hemorrhages and any primary focal cerebral injuries, the volume of subdural hematoma and the age of the victim as discriminating variables. A simulation of the duration of the lucid interval for various forms of craniocerebral trauma with the presence of supratentorial subdural hematomas by a family of lognormal distributions with known parameters was performed. The developed linear discriminant model and computational procedures with model lognormal probability distributions are implemented in the C# programming language in the format of the computer program “Lucid Interval Calculator”. The obtained data are recommended for use in forensic expert practice in reconstructing the circumstances of causing traumatic subdural hematomas.