Biomedical subjects
Publications and source records attributed to A Anné.
The authors report a patient who was on oral anticoagulants because of mitral valve disease and who developed paraplegia from subarachnoid bleeding involving the cauda equina. The differential diagnosis, investigations and treatment of the cauda equina syndrome are described.
The present study focuses on measuring the contribution of context in the form of visually presented printed sentences toward the acoustical identification of a word. The results obtained demonstrate the feasibility of the objective selection and calibration of sentence material that could serve to quantify an individual's efficiency in utilizing contextual information during speech perception. In the employed experimental procedure, a reference group of normal-hearing subjects are presented acoustically with test words either in isolation or together with context in the form of a written sentence. The test words are presented under various levels of superimposed noise and the median signal-to-noise ratio at which identification occurs in the reference group serves to characterize the intelligibility of a particular presentation of a word or word-sentence combination. This median value is shifted toward lower signal-to-noise ratios when contextual information in the form of a sentence is provided along with the test word. The resultant context-induced shift can be adopted as an objective and quantitative measure of the effect of contextual information provided by the written sentence on the intelligibility of the test word. The data obtained in this study demonstrate that such context-induced shifts are large enough to be easily measured with the adopted experimental approach.
It is the purpose of this report to examine the process of burn care of hospitalized burn patients in the Commonwealth of Virginia over a 21 month period. Eighty-nine per cent of the hospitals within the state participated in the study, the results of which provide a positive indication of the performance of our statewide emergency medical service referral system. This system was successful in redistributing patients, with the more severely burned patients being treated in the specialty burn treatment facilities. The process of burn care within the hospital setting was also consistent with the patient's severity of injury.
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A user-oriented Emergency Medical Services Information System ( EMSIS ) has been developed in our medical center that can readily be established by any interested medical center. This minicomputer based system provides online registration of poison center calls, access to the Poisindex (C) data base, concise patient information sheets, access to EMS treatment protocols, assistance in the differential diagnosis of acute poisoning, dosage recommendations for drugs with a narrow therapeutic margin, and kinetic analysis of drug overdoses. Video terminals access EMSIS in the Emergency Department, pharmacy, outpatient medicine clinic, pediatric clinic, medicine wards, poison control center, and biomedical engineering. A PDP 11/70 with 256 Kb core and 48 ports running under RSTS /E V7 .0 supports an average of 20 simultaneous users.
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The incidence of minor burn injuries has been determined for the Commonwealth of Virginia during a 17-month period. The data set included all patients with burn injuries receiving treatment in the emergency department that did not require hospitalization. The risk of burn injury was calculated by age, race and sex. Examination of the data revealed large differences in the magnitude of age-specific incidence rates between men and women and the white and non-white population. Differences in the economic status of the population may explain a large proportion of the variation in the crude burn rates.
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In an attempt to quantitate the physical behavior of biological systems, Fourier analysis has been applied to the respiratory and circulatory systems by a number of investigators. The validity of this application has been questioned on the basis that these systems are nonlinear and not strictly periodic. If these objections were valid much of the more recent work in this field would have to be re-evaluated. The applicability of Fourier analysis to these two systems was therefore investigated, both theoretically and experimentally, using on-line analysis on a LINC (laboratory instrument computer) digital computer. In normal anesthetized dogs errors introduced by deviations from periodicity and linearity were found to be within the range of measurement errors. In sinusoidally perfused aortas the amount of second harmonic produced by the vessel was less than 5%. In addition, the magnitude of errors due to faulty determination of cycle length, sampling techniques, aliasing, and A-D (analogue to digital) conversion were evaluated and found to be within the noise level of the measuring equipment when appropriate techniques were employed. Utmost care has to be used in the coupling between a transducer and the system to be measured, and dynamic calibration before each experiment is a prerequisite for successful analysis. With presently available equipment the static measurement errors can be reduced to +/-0.2 cm H(2)O for pressure transducers, 0.1 cm(3)/sec for electromagnetic flowmeters, and 5 x 10(-4) cm for measurement of radius changes. The frequency response of this equipment once properly coupled to the system is flat to at least 20 cycle/sec.
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The authors describe the different congenital anomalies of the upper extremity. Starting from a case, thereafter they give a precise description of the Poland syndrome.