Results 41 to 50 of about 27,091 (195)
Sensors, 2012 Completely noninvasive monitoring of hemoglobin concentration has not yet been fully realized in the clinical setting. This study investigates the viability of measuring hemoglobin concentration noninvasively by evaluating the performance of two types of
Panayiotis A. Kyriacou +2 more
doaj +1 more source
Wearable Belt With Built-In Textile Electrodes for Cardio—Respiratory Monitoring
Sensors, 2020 Unobtrusive and continuous monitoring of vital signs is becoming more and more important both for patient monitoring in the home environment and for sports activity tracking.
Emanuele Piuzzi +4 more
doaj +1 more source
Relation between respiratory variations in pulse oximetry plethysmographic waveform amplitude and arterial pulse pressure in ventilated patients. [PDF]
, 2005 IntroductionRespiratory variation in arterial pulse pressure is a reliable predictor of fluid responsiveness in mechanically ventilated patients with circulatory failure.
Besnard, Cyril +4 more
core +2 more sources
Automatic Non-Invasive Isolation of Respiratory Cycles [PDF]
arXiv, 2022 In this paper, we introduce a novel algorithm designed to isolate individual respiratory cycles on a thoracic respiratory inductance plethysmography signal. The algorithm locates breaths using signal processing and statistical methods and enables the analysis of sleep data on an individual breath level.
arxiv
Knockdown of PHOX2B in the retrotrapezoid nucleus reduces the central CO2 chemoreflex in rats
eLifePHOX2B is a transcription factor essential for the development of different classes of neurons in the central and peripheral nervous system. Heterozygous mutations in the PHOX2B coding region are responsible for the occurrence of Congenital Central ...
Silvia Cardani +3 more
doaj +1 more source
Eosinophils Are Important for Protection, Immunoregulation and Pathology during Infection with Nematode Microfilariae [PDF]
, 2014 Eosinophil responses typify both allergic and parasitic helminth disease. In helminthic disease, the role of eosinophils can be both protective in immune responses and destructive in pathological responses. To investigate whether eosinophils are involved
AA Humbles +52 more
core +3 more sources
Frontiers in Physiology, 2023 Electrical impedance tomography (EIT) is a non-invasive diagnostic tool for evaluating lung function. The objective of this study was to compare respiratory flow variables calculated from thoracic EIT measurements with corresponding spirometry variables.
David P. Byrne +4 more
doaj +1 more source
Heart rate estimation in intense exercise videos [PDF]
arXiv, 2022 Estimating heart rate from video allows non-contact health monitoring with applications in patient care, human interaction, and sports. Existing work can robustly measure heart rate under some degree of motion by face tracking. However, this is not always possible in unconstrained settings, as the face might be occluded or even outside the camera. Here,
arxiv
Mathematical Modeling of Arterial Blood Pressure Using Photo-Plethysmography Signal in Breath-hold Maneuver [PDF]
pages 2711-2714 (publisher:IEEE), 40th Annual International
Conference of the IEEE Engineering in Medicine and Biology Society (EMBC),
October 2018, 2018 Recent research has shown that each apnea episode results in a significant rise in the beat-to-beat blood pressure and by a drop to the pre-episode levels when patient resumes normal breathing. While the physiological implications of these repetitive and significant oscillations are still unknown, it is of interest to quantify them. Since current array
arxiv +1 more source
Arteriovenous Oscillometric Plethysmography for Fistula Functional Testing
Kidney & Blood Pressure ResearchIntroduction: The aim of the presented prospective observational study was to evaluate the effect of fistula flow on peripheral wave morphology and pulse wave velocity by means of the oscillometric Vicorder®-device with the purpose of fistula ...
Veit Busch +6 more
doaj +1 more source