No description available.

Honors Project--Smith College, Northampton, Mass., 2010. / Includes bibliographical references (p. 119-121).

Elevated intracranial pressure (ICP) in closed head injury may lead to a vegetative state and even death. Current methods available for measuring ICP may cause infection, haemorrhage or not reliable. A patient-specific correlation between ICP and an external vibration response was used for ICP evaluation, which based on finite element (FE) modeling. In FE modeling, a two dimensional FE model of human head was built in ANSYS. Geometry information was obtained from a magnetic resonance image of the human head, while the material properties were acquired from literatures. Vibration responses, e.g., displacement, velocity, acceleration and equivalent strain, were obtained for applied ICPs in FE analyses. Correlations between ICP and vibration responses were established. Effects of impact magnitude and impact duration were studied. Response sensitivity was defined to find a vibration response that is sensitive to ICP change. A procedure based on response sensitivity was proposed for ICP evaluation.

Elevated intracranial pressure (ICP) in closed head injury may lead to a vegetative state and even death. Current methods available for measuring ICP may cause infection, haemorrhage or not reliable. A patient-specific correlation between ICP and an external vibration response was used for ICP evaluation, which based on finite element (FE) modeling. In FE modeling, a two dimensional FE model of human head was built in ANSYS. Geometry information was obtained from a magnetic resonance image of the human head, while the material properties were acquired from literatures. Vibration responses, e.g., displacement, velocity, acceleration and equivalent strain, were obtained for applied ICPs in FE analyses. Correlations between ICP and vibration responses were established. Effects of impact magnitude and impact duration were studied. Response sensitivity was defined to find a vibration response that is sensitive to ICP change. A procedure based on response sensitivity was proposed for ICP evaluation.

Diss. (sammanfattning) Uppsala : Uppsala universitet, 2005. / Härtill 5 uppsatser.

Thesis (Ph.D.)--Drexel University, 2009. / Includes abstract and vita. Includes bibliographical references (leaves 104-115).

Thesis (Ph. D.)--University of Washington, 2005. / Vita. Includes bibliographical references (leaves 97-111).

Thesis (M.S.)--Brigham Young University. Dept. of Electrical and Computer Engineering, 2005. / Includes bibliographical references (p. 275-278).

Prolonged or untreated intracranial pressure (ICP) can have devastating and life threatening effects. If left untreated, significant brain damage or death can occur as a result of a vicious cycle of destruction. Although clinical signs and symptoms are present with increases in intracranial pressure, ICP monitoring is the "gold standard" for assessment of intracranial pressure. Unfortunately, ICP monitoring is utilized only 50% of the time that it is indicated in the U.S. due to risks such as hemorrhage, infection, and technical malfunctions. Findings in the literature identify variables associated with infection risk when ICP monitoring devices are utilized. Factors associated with an increased risk of infection include indications for monitoring (subarachnoid or intraventricular hemorrhage), concurrent infection, duration and number of devices utilized, manipulation, and dislodgement. Other factors that may be associated with infection risk included corticosteroid use and location where the device is placed. Catheters impregnated with silver or antibiotics are associated with a decreased risk of infection. Variables deemed unimportant in regard to infection risk included age, gender, severity of illness, GCS score, CSF leak, who places the device, routine CSF sampling, prophylactic antibiotics, antibiotic irrigation, and prophylactic catheter exchange. None of the current literature is focused on nursing care. This is unfortunate, as the care nurses provide is integral to infection prevention associated with such devices. Future nursing research must address this lack of imperative information.

Thesis (Ph. D.)--University of Florida, 2003. / Title from title page of source document. Includes vita. Includes bibliographical references.