Analysis and description of HOLTIN service provision for AECG monitoring in complex indoor environments

In this work, a novel ambulatory ECG monitoring device developed in-house called HOLTIN is analyzed when operating in complex indoor scenarios. The HOLTIN system is described, from the technological platform level to its functional model. In addition, by using in-house 3D ray launching simulation code, the wireless channel behavior, which enables ubiquitous operation, is performed. The effect of human body presence is taken into account by a novel simplified model embedded within the 3D Ray Launching code. Simulation as well as measurement results are presented, showing good agreement. These results may aid in the adequate deployment of this novel device to automate conventional medical processes, increasing the coverage radius and optimizing energy consumption.The authors wish to thank the support given under project ENEIDA TEC2010-21563-C02-01, funded by the Ministry of Economy and Competitiveness of Spain

Design, development and preliminary evaluation of a new wearable vital signs monitor for cattle

El monitoreo de los diferentes signos vitales en vacunos tiene importancia desde el punto de vista productivo, sanitario y de bienestar animal; sin embargo, existen pocos equipos que tengan el potencial de uso a nivel de campo y que no sean invasivos. Por tal motivo se llevó a cabo el presente trabajo con la finalidad de diseñar, construir y evaluar el uso de un pequeño MOnitor de SIgnos VItales LLevable (MOSIVILLe), que sea capaz de capturar las señales vitales en vacunos bajo condiciones de campo. El diseño y desarrollo del MOSIVILLe se realizó en Lima, Perú, entre enero y octubre de 2017 y la evaluación en campo se realizó en Chota, Perú, utilizando 11 vaquillas entre noviembre de 2017 y febrero de 2018. Con el uso del MOSIVILLe se obtuvieron las señales vitales de vacunos, reconociéndose las ondas P, Q, R, S, T, complejo QRS e intervalo RR del electrocardiograma que condujeron a obtener la frecuencia cardiaca (FC). Adicionalmente, se obtuvo la temperatura de la piel (T°P) y la señal de ventilación con los picos de inhalación, exhalación, tiempo de inspiración y tiempo de espiración que determinan la frecuencia respiratoria (FR). El MOSIVILLe usado en vacunos en condiciones de campo permitió obtener una FC de 70.83±1.47, FR de 25.24±1.64 y una T°P de 31.52±0.40 (promedio ± error estándar), valores que se encuentran en concordancia con la literatura. Se concluye que el MOSIVILLe es una alternativa importante para obtener diversos signos vitales en vacunos bajo condiciones de campo.The monitoring of various vital signs in cattle is important from the point of view of production, health and animal welfare; however, there are few devices that have the potential to be used at the field level and that are not invasive. For this reason, the present work was carried out with the purpose of designing, constructing and evaluating the use of wearable vital signs monitor (MOSIVILLe), which is capable of capturing the vital signs in cattle under field conditions. The design and development of MOSIVILLe was carried out in Lima, Peru, between January and October 2017 and the field evaluation was carried out in Chota, Peru, using 11 heifers between November 2017 and February 2018. The vital signs of cattle were obtained with the MOSIVILLe, recognizing the P, Q, R, S, T waves, QRS complex and RR interval of the electrocardiogram that led to obtain the heart rate (HR). Additionally, the skin temperature (T degrees S) and the ventilation signal were obtained with the peaks of inhalation, exhalation, inspiration time and expiration time that determine the respiratory frequency (RF). MOSIVILLe used in cattle in field conditions allowed to obtain an HR of 70.83 +/- 1.47, RF of 25.24 +/- 1.64 and a T degrees S of 31.52 +/- 0.40 (mean +/- standard error), values that agree with the literature. It is concluded that MOSIVILLe is an important alternative to obtain various vital signs in cattle under field conditions