The article is devoted to the study of the negative influence of air flow on the mucous membrane of the nasal cavity. in the section the basic provisions of the aerodynamics of the nasal cavity are considered, the main characteristics of the laminar boundary layer in the nasal cavity are determined. it is determined that the thickness of the boundary layer strongly depends on the mode of respiration, with forced breathing, the difference in the thickness of the boundary layer between the norm and in the narrowing of the nasal passage significantly decreases. with a quiet breath, the thickness of the boundary layer will essentially depend on the equivalent diameter of the nasal canal. thus, with the growth of the equivalent diameter of the nasal passages, the thickness of the boundary layer increases significantly, which is especially noticeable when forced respiration. therefore, the negative effect of air flow will be manifested, above all, with increased costs and narrowing of the nasal cavity and depend on the heterogeneity of the mucous membrane of the nasal cavity, which with forced breathing is more likely to go beyond the laminar boundary layer. in calculating the parameters of the boundary layer, it is necessary to specify the parameters of air flow, obtained as a result of computer olfactometry or physiological data for the corresponding breathing regimes. with the increase of respiration and the corresponding reduction of the thickness of the boundary layer of the air stream, the risk of negative influence of turbulent air flow on the mucous membrane of the nasal cavity increases. the use of this method makes it possible at the stages of diagnosis and surgical planning to quantify the effect of the negative influence of air flow on the mucous membrane of the nasal cavity, which is associated with turbulent drying and determine the areas that are subject to surgical correction by the proposed criterion.
On the basis of the created mathematical model prognostically significant measures of medical and social rehabilitation in persons with disabilities with pathology of respiratory organs were determined. The main prognostic significance characteristics of the "effectiveness" of rehabilitation were established and the influence of different types of rehabilitation on the process of recovery and (or) improving livelihoods was estimated. The main rehabilitation measures that increase the effectiveness of rehabilitation in persons with disabilities due to broncho-pulmonary diseases are: "medical observation", "restorative therapy", "spa treatment" and all the measures recommended in the individual rehabilitation program "labor" and "physical rehabilitation", "Examination of potential professional abilities", "vocational training, retraining and advanced training".
This article examines the dependence of the set of parameters of the phase portrait of an EMG signal on age, sex, and the diagnosis of the examined by methods of statistical analysis. the work is carried out on the basis of the results of the examination in four groups of patients: practically healthy without complaints; conditionally healthy with complaints of back pain; vertebral patients; patients with scoliosis. the studies were conducted in collaboration with the laboratory of pathophysiology of the Sitenko institute of spine and joint pathology Ukrainian academy of medical sciences. the study was performed with 102 people of both sexes aged 18 to 76 were examined. statistical processing of samples to identify statistically significant correlations of the parameters of the phase portrait of the EMG signal with the age and sex of the subject was conducted. statistically significant differences were not found. statistical processing of the sample to identify statistically significant correlations between the group to which the patient belongs, and each indicator of the phase portrait was conducted. the groups of practically healthy patients without complaints and conditionally healthy patients with complaints of back pain are not statistically significantly different for each parameter of the phase portrait. However, between patients without pathologies, vertebral patients and patients with scoliosis, a statistically significant difference was found for seven parameters of the phase portrait. The perspective of the work is the construction of models for classifying patients according to the parameters of phase portraits of surface electromyography data.
KEYWORDS: Electrocardiography, Signal processing, Heart, Data processing, Interference (communication), Diagnostics, Amplifiers, Electrodes, Sensors, Signal detection
Telemedical system design and implementation requires numerous steps. It is necessary to evaluate the operation of algorithms responsible for analysis and detection of life-threatening situations. By performing ECG analysis it is possible to obtain information about the overall patient health condition as well as detailed information about the circulatory system condition. To achieve that goal one must gather, filter and process data. Data was gathered using a purposely built device from a group of four volunteers. Available data set was processed to obtain information about the patients condition. Pan-Tompkins algorithm was used to detect R peaks and calculate heart rhythm. Afterward the rest of parameters were extracted in time domain using windowed peak detection and polynomial estimation. The parameters were calculated as delays between appropriate points in the signal. The method proved to be able to extract parameters in some of the cases, and proved limited effectiveness in situations where physical activity was significant. It was nevertheless possible to eliminate noise from the mains, the trend and higher frequency noise Further improvements need to be introduced to increase the method’s robustness in the presence of significant muscle noise.
The paper evaluated the diagnostic value of laser photoplethysmography when examining patients with chronic lower limb ischemia. A statistical analysis of the research results was made, and diagrams of relationship between the degrees of ischemia and blood flow are presented. Development of the device to determine the level of peripheral blood circulation and saturation was presented. Also additional accessories in the form of optical fibers for different applications were suggested.
The article concerns the research methods of noise reduction occurring in the ECG signals. The method is based on the use of filtration in wavelet transform domain. The study was conducted on two types of signal - received during the rest of the patient and obtained during physical activity. For each of the signals 3 types of filtration were used. The study was designed to determine the effectiveness of various wavelets for de-noising signals obtained in both cases. The results confirm the suitability of the method for improving the quality of the electrocardiogram in case of both types of signals.
The structure and circuit of the implemented device is using an environmentally friendly radiation sources and pulse photo stimulus modes with frequencies that correspond frequencies processes in BL to create bio resonance effects to accelerate the procedures. Proposed one of the possible hardware solutions are based on usage of dynamic irradiation modes and automatic continuous optical testing procedures UIAB and PP. The changes of the optical characteristics of BL provides the doctor continuous information on the effectiveness of the procedure on the patient's condition.
KEYWORDS: Electrocardiography, Heart, Signal processing, Electronic filtering, Signal detection, Detection and tracking algorithms, Linear filtering, Diagnostics, Lead, Surgery
ECG signal parameters are commonly used indicators of human health condition. In most cases the patient should remain stationary during the examination to decrease the influence of muscle artifacts. During physical activity, the noise level increases significantly. The ECG signals were acquired during controlled physical activity on a stationary bicycle and during rest. Afterwards, the signals were processed using a method based on Pan-Tompkins algorithms to estimate their parameters and to test the method.
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