Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference最新文献_第9页

The new age electronic patient record system 新时代的电子病历系统

Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference Pub Date : 1995-04-07 DOI: 10.1109/SBEC.1995.514459

S. Saha

{"title":"The new age electronic patient record system","authors":"S. Saha","doi":"10.1109/SBEC.1995.514459","DOIUrl":"https://doi.org/10.1109/SBEC.1995.514459","url":null,"abstract":"Health care management costs rise yearly, especially in the areas of personnel and the expenses of generating and maintaining the patients' records. A substantial informational burden is incurred with each patient visit to a health professional, and patients' needs are often lost in the shuffle of medical records, insurance information, and red tape. However during the last few years significant progress has been made in the development of clinically useful medical decision support system to assist the health care provider. Earlier efforts to implement computer-based patient records mainly used keyboard entry, but with the latest technology, voice activated clinical reporting systems could be a central component of such a computer-based system in the future. Several groups are in the process of developing portable data management device. This will allow the clinicians to have on-line readily transferable patient records, decision making support and searching of remote databases to better analyze complex health care delivery problems. When the medical transcriptions are forwarded to an off-site location, this unique device will reduce the time and the cost of re-recording and transmission. This device will help the user to maintain and update the data remotely and instantly. It will also provide immediate information updates and database manipulations for all aspects of medical data management, provide portable multiple and simultaneous access to complete database information. These will significantly reduce paperwork and personnel costs.","PeriodicalId":332563,"journal":{"name":"Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131240396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Walkway surface heights and ground reaction forces 人行道表面高度和地面反作用力

Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference Pub Date : 1995-04-07 DOI: 10.1109/SBEC.1995.514471

D. Schieb

{"title":"Walkway surface heights and ground reaction forces","authors":"D. Schieb","doi":"10.1109/SBEC.1995.514471","DOIUrl":"https://doi.org/10.1109/SBEC.1995.514471","url":null,"abstract":"Falling is a leading cause of morbidity and mortality in the U.S. Several factors can contribute to injuries resulting from tripping, slipping and falling during locomotion such as surface condition, transitions and the degree of walkway evenness. Because walkway unevenness has been largely unexamined, the purpose of this study was to evaluate the extent to which gait kinetics change with uneven walkway surface heights. In this study, subjects walked at a constant velocity over a walkway, whose surface for various trials was positioned above, below, and level with respect to multicomponent force measuring plate. Ground reaction forces (GRF) were recorded from a single step when the subject stepped up or down onto the force plate during gait. Averaged trials from three step-up and two step-down heights were compared to level gait trials. GRF parameters included peak force components, center of pressure and temporal measures. Significant differences in GRF measures were found between the level condition and step-up heights >2.5 cm and step-down heights >-1.5 cm. No differences were found between the level condition and a step-up height of 0.7 cm. The results suggest that a walkway unevenness of >2.5 cm step-up and >1.5 cm step-down may contribute to initiating a trip, stumble or fall since the GRF are significantly altered with these conditions. However, negotiating a step-up of <2.5 cm or step-down of <0.7 cm produces gait kinetic measures similar to walking on a level surface, and therefore may not predispose one to a trip or stumble.","PeriodicalId":332563,"journal":{"name":"Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130099355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Polymers and devices in ophthalmology 眼科中的聚合物和设备

Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference Pub Date : 1995-04-07 DOI: 10.1109/SBEC.1995.514462

M. Refojo

引用次数: 4

Changes in tearing pressure with the geometry of dissections in porcine aortas 撕裂压力随猪主动脉解剖几何形状的变化

Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference Pub Date : 1995-04-07 DOI: 10.1109/SBEC.1995.514424

C. He, M. R. Roach

{"title":"Changes in tearing pressure with the geometry of dissections in porcine aortas","authors":"C. He, M. R. Roach","doi":"10.1109/SBEC.1995.514424","DOIUrl":"https://doi.org/10.1109/SBEC.1995.514424","url":null,"abstract":"Dissecting aneurysms, or dissections, occur in large arteries by creating a false lumen in the media which is parallel to the true lumen. A tensile force is needed to tear the arterial wall in dissections. This tensile force could be produced in response to the pressure in the false lumen. In this study, tearing pressure was investigated. The studies were done in vitro on fresh isolated porcine thoracic aortas which were pressurized to 130 mmHg (physiological mean pressure). A volume of diluted India ink was injected into the media of the aortic wall to create a cavity called a \"bleb\". As the size of the bleb increased, the media was dissected. The difference between the pressure inside the bleb and that in the lumen was measured, and defined as tearing pressure. Ten pig thoracic aortas were studied. The results showed that tearing pressure decreased with the volume of blebs at the beginning when the blebs were first formed, and then reached a constant pressure after the shape of blebs did not change. The minimum tearing pressure required for the propagation of dissections is called propagation pressure which is 52/spl plusmn/10(SD) mmHg (n=10) in the range of physiological pressure, indicating that the propagation of dissection might be possible in vivo under physiological conditions. Based on the assumptions that each aortic wall has a constant Young's modulus at large strains and a maximum strain, and shear stress is not an important fact involved in dissections, a mathematical model is established for dissections of the aortic wall. The tearing pressure was inversely proportional to both the radii of blebs and the tangents of the angles at the leading edge of dissections before the blebs had a fixed shape, and then kept as a constant when the shape of blebs did not change. The model explained the change of tearing pressure with the geometry of blebs, and predicted tearing pressure would be lower in old human aortas than in young ones.","PeriodicalId":332563,"journal":{"name":"Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126040500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

3-D finite element modeling of human spinal discs and correlation with volume-pressure relation due to loading 人体椎间盘的三维有限元建模及与加载时体压关系的关系

Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference Pub Date : 1995-04-07 DOI: 10.1109/SBEC.1995.514498

A. Shirazi-Adl, H. Ranu

引用次数: 1

In vivo characterization of hydroxylapatite (HA) coated pyrolytic carbon implants 羟基磷灰石(HA)涂层热解碳植入物的体内表征

Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference Pub Date : 1995-04-07 DOI: 10.1109/SBEC.1995.514435

L.S. Popich, A. M. Rust-Dawicki, J. Klawitter, J. F. Kay, S. Cook

{"title":"In vivo characterization of hydroxylapatite (HA) coated pyrolytic carbon implants","authors":"L.S. Popich, A. M. Rust-Dawicki, J. Klawitter, J. F. Kay, S. Cook","doi":"10.1109/SBEC.1995.514435","DOIUrl":"https://doi.org/10.1109/SBEC.1995.514435","url":null,"abstract":"Low-temperature isotropic (LTI) pyrolytic carbon implants (Carbon Implants, Austin, TX) with smooth and grooved surfaces were evaluated using the canine transcortical plug model. The implants were evaluated with and without a 50-75 /spl mu/m hydroxylapatite (HA) coating (Bio-Interfaces, Inc., San Diego, CA). Four adult mongrel dogs were used each receiving five transcortical implants bilaterally in the femur. The implants were evaluated mechanically and histologically at periods of 3, 4, and 6 weeks postoperatively. Mechanical pushout testing was performed to determine interface attachment strength and stiffness. Histologic sections were evaluated for interface tissue characterization, percent bone apposition, and mode of interface pushout failure. Statistical analysis revealed that RA coating significantly increased interface shear strength and stiffness of smooth pyrolytic carbon implants. A grooved surface texture resulted in improved mechanical attachment strength compared to smooth surface texture and was unaffected by the application of HA coating. Histologic evaluation showed a significant amount of direct implant-bone apposition with little or no fibrous tissue present. HA-coated implants had a significantly greater amount of direct bone apposition with both smooth and textured surfaces compared to uncoated implants.","PeriodicalId":332563,"journal":{"name":"Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114388260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Problems in defining and measuring friction on natural and artificial playing surfaces 定义和测量天然和人造场地摩擦的问题

Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference Pub Date : 1995-04-07 DOI: 10.1109/SBEC.1995.514470

H. Medoff

引用次数: 3

Power spectral analysis of arterial blood pressure variability in conscious mice 有意识小鼠动脉血压变异性的功率谱分析

Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference Pub Date : 1995-04-07 DOI: 10.1109/SBEC.1995.514484

K. Ju, T. Kuwaki, M. Kumada, S. Onish, H. Yamazaki

引用次数: 0

Lower extremity microfracture simulation in human bone 人类下肢骨微骨折模拟

Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference Pub Date : 1995-04-07 DOI: 10.1109/SBEC.1995.514487

M. Hasan, H. Ranu

引用次数: 0

Uptake of liposomes by human retinal pigment epithelial cells in culture 培养的人视网膜色素上皮细胞对脂质体的摄取

Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference Pub Date : 1995-04-07 DOI: 10.1109/SBEC.1995.514455

G. Peyman, J. Schulman, M.R. Neisman

{"title":"Uptake of liposomes by human retinal pigment epithelial cells in culture","authors":"G. Peyman, J. Schulman, M.R. Neisman","doi":"10.1109/SBEC.1995.514455","DOIUrl":"https://doi.org/10.1109/SBEC.1995.514455","url":null,"abstract":"Summary form only received as follows: The phagocytic uptake of several liposome compositions by human retinal pigment epithelial (RPE) cells in culture was examined. The endocytic uptake of different Iiposome preparations was quantitatively measured for RPE, RAW 264.7 and rabbit dermal fibroblasts. RAW 264.7 is a transformed macrophagic murine cell line used as a positive control while rabbit dermal fibrocytes are a cell line developed for in vivo animal models of PVR. Measurement of the internalization of a non-degradable radiolabeled cholesterol analog incorporated in the liposome bilayer was used to quantify the uptake of liposomes. Fluorescence microscopy was used to confirm the internalization of the vesicles. The composition of liposomes most avidly ingested by RPE most closely resembled shed rod outer segments (ROS). The most actively phagocytized liposomes like the ROS plasma membrane contained phosphatidylserine and lacked cholesterol. Additionally, a greater uptake of the large multiluminar vesicles ranging in size from 0.20 /spl mu/m to 2 /spl mu/m compared to smaller vesicles extruded through a 0.22 /spl mu/m filter demonstrated liposomal size influenced the uptake process. The larger vesicles were closer in size to naturally occurring ROS. Uptake by RPE was significantly lower than observed with RAW 264.7 cells, but greater than exhibited by rabbit dermal fibroblasts. These findings appear to have important implications regarding the use of liposomes as drug carriers for the treatment of proliferative vitreoretinopathy and the study of phagocytosis by RPE.","PeriodicalId":332563,"journal":{"name":"Proceedings of the 1995 Fourteenth Southern Biomedical Engineering Conference","volume":"371 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124643102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0