Derner M.,Masaryk Hospital in Usti nad Labem
Prague medical report | Year: 2011
A 41-year-old man with injury of right half of the thorax, fractures of the left crural bones and paralysis of the right upper limb was admitted to our hospital. A CT examination at admission revealed bilateral pulmonary contusion and bilateral fluid- and pneumothorax. In addition pneumomediastinum, pneumopericardium, subcutaneous emphysema and pneumorrhachis at the cervicothoracic transition was demonstrated. Abnormal findings in the skull and brain were not revealed. The fifth day after admission repeated CT examination demonstrated extensive frontal pneumocephalus on the right, presence of air in several cisterns and in the right optic nerve sheaths (pneumoopticus). Right frontal craniotomy was performed, dura mater was incised and air was evacuated. Rapid regression of pneomocephalus was evident postoperatively. The tenth day after admission MRI of the cervical spine and brachial plexus was performed. At the level of the C7 and C8, nerve roots pneumomenigocele and a nerve retracting ball indicating the presence of a nerve root injury were discernible. This case demonstrated that severe thoracic blunt trauma leads to acute increase of intrathoracic pressure with concomitant fluid- and pneumothorax, pneumomediastinum and pneumopericard. From the mediastinum air propagated subcutaneously. Disrupted cervical dural sheaths resulted in leakage of cerebrospinal fluid and entry of air from mediastinum to subdural and subarachnoid spinal and cranial space and to the subarachnoid space of the optic nerve.
Kelbich P.,Haematology and Immunology |
Kelbich P.,Charles University |
Kelbich P.,Masaryk Hospital in Usti nad Labem |
Kelbich P.,Laboratory for Liquorology and Neuroimmunology Topelex |
And 15 more authors.
Clinical Chemistry and Laboratory Medicine | Year: 2014
Background: The concentrations of glucose and lactate in cerebrospinal fluid (CSF) provide important information about energy metabolism in the CSF compartment. To improve our understanding of this information we introduced a new parameter resulting from a formula for calculating the fictitious production of adenosine triphosphate, i.e., the coefficient of energy balance (KEB). Methods: We evaluated cytology, the concentrations of glucose and lactate and the KEB in the CSF of 948 patients, who were divided into five groups. For statistical analysis we used the Kruskal-Wallis test with post-hoc analysis using the Dunn method and multinomial regression analysis. We determined the specificities and sensitivities of the cytological pictures and the KEB. Results: A KEB >28.0 corresponded to normal energy metabolism in the CSF. A KEB <28.0 corresponded to an increased level of anaerobic metabolism in the CSF during inflammation in the CNS. A KEB <10.0 corresponded to a high level of anaerobic metabolism in the CSF during severe inflammation with an oxidative burst of professional phagocytes in the CNS. The KEB parameter increased the specificities of cytological examinations of the CSF in all cases. Conclusions: The KEB represents an equation for calculating the fictitious average number of ATP molecules produced in the CSF compartment from one molecule of glucose, and we used it successfully as a new parameter for evaluating energy metabolism status in the CSF.
Obruba P.,Charles University |
Capek L.,Technical University of Liberec |
Henys P.,Technical University of Liberec |
Kopp L.,Masaryk Hospital in Usti nad Labem
Computer Methods in Biomechanics and Biomedical Engineering | Year: 2016
Elastic bundle nailing is a method for simple humeral mid-shaft fracture osteosynthesis. The aim of our subsequent numerical simulations was to find out torsional and bending stiffness of an elastic bundle nailed humerus. Parametrical 3D numerical model was developed. The diameter of nails was the varying parameter of 1.8, 2.5, 3 and 4 mm. From our results can be seen that the bending stiffness in bundle nailing technique does not depend on nail diameter. On the contrary the torsional stiffness does highly depend on nail diameter. The dependency of the maximal stress on a nail diameter during bending and torsion of the humerus is non-linear. It can be seen that the higher diameter is used the higher stress occurs. Achieved results allow us for the recommendation of optimal nail diameter for this method, which lies between 2 and 3 mm. © 2016 Taylor & Francis