Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 54 for “"oximetry"”.
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Newborn Pulse Oximetry Screening
… for New Zealand to introduce nationwide pulse oximetry screening for the detection of these anomalies in newborns. Data from national databases were merged to compile a dataset of infants and fetuses with critical cardiac disease in New Zealand between 2006 and 2015, which was interrogated to …
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Wearable Pulse Oximetry in Construction Environments
… workers for carbon monoxide exposure via pulse oximetry. In particular, this study sought to understand the impact of motion artifacts caused by the worker's activities and to determine if those activities would prevent the blood gas sensor from detecting the onset of carbon monoxide poisoning. …
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An analog VLSI front end for pulse oximetry
Pulse oximetry is a fast, noninvasive, easy-to-use, and continuous method for monitoring the oxygen saturation of a patient's blood. In modem medical practice, blood oxygen level is considered one of the important vital signs of the body. The pulse oximeter system consists of an optoelectronic …
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An investigation of remote non-contact photoplethysmography and pulse oximetry
… an investigation of non-contact remote pulse oximetry and photoplethysmography. A thorough description is given of the technique of pulse oximetry along with some physiological effects and some characteristics of light-tissue interaction that underlie pulse oximetry. A device is then described …
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Electron-spin resonance oximetry in cellular systems and in vivo
In this thesis, techniques of electron spin resonance (ESR) were developed and applied to measurement of oxygen concentrations in cellular suspensions as well as in vivo systems.
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Signal Quality Analysis in Pulse Oximetry: Modelling and Detection of Motion Artifact
Pulse oximetry is a non-invasive technique for measuring the amount of oxygen in a patient's blood (SpO2). It is considered standard of care in the hospital for monitoring cardio-respiratory function. While it has potential uses in ambulatory or wearable applications, pulse oximetry is susceptible …
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A COMPARATIVE STUDY OF TOTAL HEMOGLOBIN MEASUREMENT TECHNOLOGY: NONINVASIVE PULSE CO-OXIMETRY AND CONVENTIONAL METHODS
… principles of operation. Noninvasive pulse CO-oximetry represents the latest development in hemoglobin measuring technology. The technology uses principles similar to pulse oximetry to measure total hemoglobin, oxyhemoglobin, reduced oxyhemoglobin, carboxyhemoglobin and methemoglobin. Similar …
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Investigating the use of CO-oximetry for simultaneous measurement of carboxyhaemoglobin and methaemoglobin in post-mortem blood
… instrument that applies a technique called CO-oximetry to measure Hb derivatives such as COHb and methaemoglobin (MetHb). The latter is an oxidised form of Hb that can cause or contribute to mortality at high concentrations. Methaemoglobin is notorious for its instability in vitro. This study, …
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Clinical correlations to distinguish from milder forms of obstructive sleep apnoea syndrome using overnight oximetry to prioritize adenotonsillectomy in a low resource setting
… syndrome (OSAS) to expedite surgery. McGill's Oximetry Score (MOS) has been validated against polysomnography for OSAS and is affordable and easy to use. Aims: The aim of this study was to assess the correlation of tonsillar size and clinical symptoms with MOS grade 3 or 4, to identify who …
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Early-Stage Research and Design of a Diagnostic Sensor for Peripheral Vascular Disease
… blood pressure measurements. Additionally, pulse oximetry is identified as a possible solution that would provide the fastest test time and greatest ease of use. Given the research done in this project, the recommendation for continuation is to pursue both potential solutions, but with an emphasis …
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Investigation of splanchnic perfusion utilising an intraluminal opto-electronic sensor placed in the duodenum
… the surgical site, monitoring of duodenal pulse oximetry signals could not be done in a continuous way. Also, the presence of moderate respiratory modulation in otherwise good quality, high amplitude signals seemed to result in an underestimation of arterial blood saturation of 2%. A frequency …
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Impact of a Two Component Intervention on Aspiration Rate among Stroke Patients
… 63% of nurses that agreed to try using pulse oximetry while conducting the bedside swallow. Additionally, there were 76% of nurses agreed to have more training on this topic.</p> <p><strong>Results:</strong> The results included 100% of the participants indicating that the teaching session was …
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The development of biomedical instrumentation using backscattered laser light
… techniques of laser Doppler flowmetry and pulse oximetry. An investigation of the responses of Doppler flowmeters using different signal processing bandwidths and laser sources revealed two major findings. Firstly, that careful choice of processing bandwidth is required in order to sample the …
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Reflectance photoplethysmography for non-invasive monitoring of tissue perfusion
… it is well known for its utilisation in pulse oximetry for the estimation of arterial blood oxygen saturation (SpO2). In pulse oximetry, mainly the pulsatile component of the signal (AC PPG) is used while the continuous DC component is mostly excluded. Near Infrared Spectroscopy (NIRS) is …
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Derivation and validation of a severity scoring tool for COVID-19 illness in low-resource setting
… systolic blood pressure; in settings with pulse oximetry, oxygen saturation is included and, in settings without access, heart rate is included. The AFEM-CMS showed good discrimination: The model including pulse oximetry had a C-statistic of 0.775 (95% CI: 0.737-0.813) and the model excluding it …
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Validation of a severity scoring tool for Covid-19 illness in Sudan
… respiratory rate, heart rate, and pulse oximetry). The AFEM-CMS was validated using C-index measurements (area under the receiver operator curve (AUROC)) in the validation dataset. All analyses were performed in R (version 4.1.0, © The R Foundation) with the dplyr, finalfit, glmnet, mice, …
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Transformative Science Education Through Action Research And Self-Study Practices
… In chapters 4 and 5, I review the history of oximetry and ways in which an oximeter can be used to obtain information on the physiological expression of emotions. I examine oximetry data in relation to emotional physiology in three different aspects; pulse rate, oxygenation of the blood, and …
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Development and optimisation of pre-treatment procedures to enhance total haemoglobin for carboxyhaemoglobin analysis in diluted blood samples
… a spectrophotometry-based technique called CO-oximetry. One of the challenges with certain CO-oximetric instruments is the requirement for total haemoglobin (tHb) to be above a specific concentration (1.61g/dL for the Radiometer ABL825 FLEX Blood Gas Analyser) for COHb determination in blood to …
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Deciphering Emotional Responses to Music: A Fusion of Psychophysiological Data Analysis and Bi-LSTM Predictive Modeling
… sessions, Electrodermal Activity (EDA) and Pulse Oximetry (POX) readings were collected, complemented by qualitative feedback from the participants. Our analysis focused on detecting recurring patterns and extracting meaningful insights from the data. In addition to this, we compare several Deep …
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