Low-cost blood pressure monitor device for developing countries

2015

Teaching Hospital Hypertensive disorders are the leading cause of maternal mortality at Komfo Anokye Teaching Hospital (KATH) in Kumasi, Ghana. These patients with these disorders need their blood pressure monitored to check the stability of their condition however many blood pressure devices for low resource settings do not make this easy to do accurately. This project aims to design a way to assist healthcare providers in measuring the blood pressures of obstetrics patients every 30 minutes or 4 hours according to patients' management plans. The team compiled the device requirements while at KATH and generated many concepts in Ghana and in the US. The drivers for the design were that the device needed to be accurate, affordable, easy to operate, portable, and safe.

2013

This paper describes an ambulatory monitor for beat-by-beat monitoring of systolic blood pressure (SBP) based on an ASIC chip and a mobile phone. The ASIC is able to measure electrocardiogram (ECG), photoelectric plethysmogram (PPG), and has a peripheral interface to control an air pump and valve for inflating and deflating a sphygmomanometer cuff in conventional blood pressure measurement. Algorithms for signal processing, characteristic point detection and SBP estimation are implemented on a mobile phone. Pulse arrival time (PAT) is derived from the apex of QRS complex to the maximum slope of PPG, and is used to estimate a rapid change component in SBP beat-by-beat. An oscillometric sphygmomanometer with a cuff is used to determine SBP intermittently for calibration purpose. Data communication between a mobile phone and the ambulatory monitor is conducted via a Bluetooth wireless connection. Performance of the prototype is examined by data from five healthy college students. The r...

2021

One of the measures from one's health is someone's heart wellbeing. Pulse rate monitoring could be used to determine heart conditions in contrast with using an ECG machine. That customer's high blood pressure requires regular heart rate management. In some circumstances, victims' health could be checked directly at such a medical facility. Digital vital signs monitor apps which can submit information in real-time are considered necessary for all of this. This article discusses the development of even a user interface that can instantly transmit blood pressure readings to the physician and health specialist via Short Messaging (SMS). That validity of a test then was shown by verification for detector data measured or SMS data output (systolic and diastolic). That processing period and pause among sending or receiving was 46.27 seconds for just a specific measurement based on the overall system test.

High blood pressure (hypertension) can quietly damage body for years before symptoms develop. If it is uncontrolled, it may wind up with an in rmity, a poor quality of life or even a fatal heart attack. In this digitalization, we need to something easy way to control hypertension. According to the source of eMarketer, the number of smartphone users worldwide will surpass 2 billion in 2016. If we make any apps which can monitor and control blood pressure, it will be blessed for us. So we try to use mobile phones sensor to make this apps.

Computer and Information Technology (ICCIT), 2012 15th International Conference on, 2012

There has been an exponential increase in health care costs in the last decade. Seniors have to make frequent visits to their doctor to get their vital signs measured. There is a huge market for non-invasive methods of measurement of these vital signs. The objective of this paper is to design and implement a reliable, cheap, low powered, non-intrusive, and accurate system that can be worn on a regular basis and monitors the vital signs and displays the output to the user's cell phone. This paper specifically deals with the signal conditioning and data acquisition of vital sign: blood pressure. Blood pressure combines the methodologies of Electrocardiography to continuously monitor the systolic and diastolic blood pressure. Here remote monitoring of a patient's blood pressure (BP) is described. The data is transferred to a central monitoring station using a wireless sensor network for displaying and storing.

The ARVmobile v1.0 is a multiplatform mobile personal health monitor (PHM) application for ambulatory blood pressure (ABP) monitoring that has the potential to aid in the acquisition and analysis of detailed profile of ABP and heart rate (HR), improve the early detection and intervention of hypertension, and detect potential abnormal BP and HR levels for timely medical feedback. The PHM system consisted of ABP sensor to detect BP and HR signals and smartphone as receiver to collect the transmitted digital data and process them to provide immediate personalized information to the user. Android and Blackberry platforms were developed to detect and alert of potential abnormal values, offer friendly graphical user interface for elderly people, and provide feedback to professional healthcare providers via e-mail. ABP data were obtained from twenty-one healthy individuals (>51 years) to test the utility of the PHM application. The ARVmobile v1.0 was able to reliably receive and process the ABP readings from the volunteers. The preliminary results demonstrate that the ARVmobile 1.0 application could be used to perform a detailed profile of ABP and HR in an ordinary daily life environment, bedsides of estimating potential diagnostic thresholds of abnormal BP variability measured as average real variability.

2015 Computing in Cardiology Conference (CinC), 2015

Out-of-office blood pressure (BP) monitoring is advocated by the guidelines for various reasons. Recently developed smartphone compatible BP monitors are potentially very useful for out-of-office BP monitoring. This study is ought to compare performances of these BP monitors. Patients with recent myocardial infarction and no documented history of atrial fibrillation or atrial flutter were eligible for our study. After inclusion, six BP monitors from different manufacturers were applied to the patient. Three consecutive measurements were done with each BP monitor. Means were statistically analysed using a linear mixed model with Bonferonni to correct for multiple comparisons. A total of 33 patients were included. Compared to the reference device, one BP monitor yielded a significant higher mean systolic BP and three monitors yielded a significant higher diastolic BP. One validated smartphone compatible device yielded no systematic difference in means of systolic and diastolic BP. One device yielded systematic difference in means of systolic and diastolic BP. Further research will be done to corroborate these findings.

International Journal of Online Engineering (iJOE)

Variation of blood pressure throughout the day is one of the reasons why it is increasingly evident that the traditional way of measuring blood pressure in the clinic or office frequently produces numbers that grossly overestimate patient's true blood pressure level. This is a major problem, since it is one of the most important and frequent measurements made by physicians. High blood pressure (BP)(hypertension) is a leading chronic condition in the globe and a major risk factor for severe diseases. Measuring the

For low-income countries, hypertension is the leading cause of death. Preeclampsia, a disorder often characterized by high blood pressure, is the second leading killer of pregnant women globally. Preeclampsia can be treated cheaply and effectively but very few women receive appropriate prenatal care. There are many different devices to measure blood pressure but they are poorly suited for use in developing countries. Great care has to be taken to engineer a device that incorporates the human-factors involved while maintaining affordability. A prototype of a low-cost device engineered specifically for semi-literate volunteers in developing countries has been created. Preliminary testing has shown reliable hypertension detection and plans have been made for field testing in rural communities this August 2010 in Nepal.

2015

High Blood Pressure (HBP) or hypertension is the major cause of adult mortality across the globe. Developing countries are the most hit of this death toll due to poor medical practices, lack of medical expertise and unreliable Electronic Medical Information (EMR) systems for citizens. Due to the increasing prevalence of HBP related issues, became necessary to continue to seek out for effective methodologies that would facilitate the diagnosis, prevention, monitoring, and treatment of HBP intelligently and to put under control its associated diseases. This paper presents a flexible framework for improving the existing processes for collecting vital signs required for the management of HBP through remote telemonitoring. It is a study that leverage wireless communications and remote sensing technologies to monitor and manage health related vital signs of patients with HBP and also to afford health care providers with necessary information for the treatment of patient with HBP and its a...