| 摘要 |
A method for determining the degree of cerebral ischemia in traumatic brain injury (TBI) comprises the identification of intracranial pressure (ICP, mm Hg) and current cerebral perfusion pressure (TsPTpt mm Hg). Additionally oxygen-protective cerebral perfusion pressure (TsPTkp mm Hg) is calculated and degree of cerebral ischemia (CI, %) is determined by the formula:CI = 100 × [(TsPTkp-TsPTpt) / TsPTkp]%where: = TsPTkp NSAT - Hg; NSAT - adequate mean arterial pressure = NATd + (nut NATd / 3) mm Hg; NATd - proper diastolic arterial pressure = 63 +0.4 × Age (years) mm Hg; PSP - proper systolic arterial pressure = 102 +0.6 × Age (years) mm Hg; 15 - normal value of intracranial pressure, mm Hg;TsPTpt = CAT-ICP, mm Hg; MAP - mean arterial pressure, mm Hg; ICP - intracranial pressure, with mild head injury is Hg, with moderate head injury is Hg, with severe head injury corresponds to Hg. And if the CI ≤ 43% - there is slight degree of CI, which is characterized by dysfunction of the biological stability of the body, with 44-68% of CI - is medium-heavy degree of CI, which is characterized by lack of biological stability of the body;CI ≥ 79% - there is severe degree of CI, which is characterized by inability of biological stability of the body. |
