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Journal of Medical Engineering & Technology

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https://www.readbyqxmd.com/read/28084110/a-novel-method-for-electronic-measurement-and-recording-of-surgical-drain-output
#1
Bernard Hendrik van Duren, Gijsbert Isaac van Boxel
Surgical drains are used to collect and measure fluids (e.g. serous fluid, lymph, blood, etc.). The volume of fluid in the container is measured using graded markings on the container and then recorded manually on a "drain chart" allowing for manual rate calculations. This method is dependant on regularly checking the volume of the drain and recording the value accurately; unfortunately, this is often not feasible due to staffing levels and time constraints. This results in inaccurate "drain charts" making clinical decisions based on these figures unreliable...
January 13, 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28078908/comparison-of-wrist-worn-and-hip-worn-activity-monitors-under-free-living-conditions
#2
Trent A Hargens, Kayla N Deyarmin, Kelsey M Snyder, Allison G Mihalik, Lauren E Sharpe
PURPOSE: Current recommendations state that individuals engage in 150 min of moderate or 75 min of vigorous intensity physical activity (PA) each week. Commercial PA monitors are becoming popular for everyday use. The accuracy of these devices, however, is not well understood. We sought to examine the accuracy of two commercial devices, one wrist and one hip-worn, under free-living conditions. METHODS: Twenty-two subjects wore two commercially available devices and one ActiGraph (AG) for seven consecutive days under normal activity...
January 12, 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28078906/arduino-based-noise-robust-online-heart-rate-detection
#3
Sangita Das, Saurabh Pal, Madhuchhanda Mitra
This paper introduces a noise robust real time heart rate detection system from electrocardiogram (ECG) data. An online data acquisition system is developed to collect ECG signals from human subjects. Heart rate is detected using window-based autocorrelation peak localisation technique. A low-cost Arduino UNO board is used to implement the complete automated process. The performance of the system is compared with PC-based heart rate detection technique. Accuracy of the system is validated through simulated noisy ECG data with various levels of signal to noise ratio (SNR)...
January 12, 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28058862/publications-update
#4
Diane Crawford
No abstract text is available yet for this article.
January 6, 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/28058857/news-and-product-update
#5
(no author information available yet)
No abstract text is available yet for this article.
January 6, 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/27924670/safety-of-iphone-retinal-photography
#6
Sheng Chiong Hong, Giles Wynn-Williams, Graham Wilson
BACKGROUND: With the advancement in mobile technology, smartphone retinal photography is becoming a popular practice. However, there is limited information about the safety of the latest smartphones used for retinal photography. AIMS: This study aims to determine the photobiological risk of iPhone 6 and iPhone 6 plus when used in conjunction with a 20Diopter condensing lens for retinal photography. METHOD: iPhone 6 and iPhone 6 plus (Apple, Cupertino, CA) were used in this study...
December 7, 2016: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/27919170/validation-of-the-fitbit-one-garmin-vivofit-and-jawbone-up-activity-tracker-in-estimation-of-energy-expenditure-during-treadmill-walking-and-running
#7
Kym Price, Stephen R Bird, Noel Lythgo, Isaac S Raj, Jason Y L Wong, Chris Lynch
OBJECTIVES: To determine the validity of energy expenditure estimation made by the Fitbit One, Garmin Vivofit and Jawbone UP activity trackers during treadmill walking and running. Determining validity of such trackers will inform the interpretation of the data they generate. DESIGN: Cross-sectional study. METHOD: Fourteen adults walked at 0.70, 1.25, 1.80 ms(-1) and ran at 2.22, 2.78, 3.33 ms(-1) on a treadmill wearing a Fitbit One, Garmin Vivofit and Jawbone UP...
December 5, 2016: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/27838945/development-validity-and-reliability-of-a-new-pressure-air-biofeedback-device-pab-for-measuring-isometric-extension-strength-of-the-lumbar-spine
#8
Andries W Pienaar, Justhinus G Barnard
This study describes the development of a new portable muscle testing device, using air pressure as a biofeedback and strength testing tool. For this purpose, a pressure air biofeedback device (PAB(®)) was developed to measure and record the isometric extension strength of the lumbar multifidus muscle in asymptomatic and low back pain (LBP) persons. A total of 42 subjects (age 47.58 years, ±18.58) participated in this study. The validity of PAB(®) was assessed by comparing a selected measure, air pressure force in millibar (mb), to a standard criterion; calibrated weights in kilograms (kg) during day-to-day tests...
November 14, 2016: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/27765003/determinants-in-the-number-of-staff-in-hospitals-maintenance-departments-a-multivariate-regression-analysis-approach
#9
Antonio Miguel Cruz, Mayra R Guarín
To date, there are no broadly accepted or accurate models to determine appropriate staffing [levels] for clinical engineering departments (CEDs). The purpose of this study is to determine what the determinants of the staffing levels are (total number of full time equivalents (FTEs)) in CEDs in healthcare organisations. In doing so, we used a cross-sectional exploratory approach by using a multivariate regression model over a secondary source of data information from the AAMI Benchmarking Solutions-Healthcare Technology Management database...
February 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/27715350/a-novel-compartmentalised-stent-graft-to-isolate-the-perfusion-of-the-abdominal-organs
#10
Yanfei Chen, Bryan W Tillman, Sung Kwon Cho, Tara D Richards, Amit D Tevar, Xinzhu Gu, William R Wagner, Youngjae Chun
Donation after cardiac death has been adopted to address the critical shortage of donor organs for transplant. Recovery of these organs is hindered by low blood flow that leads to permanent organ injury. We propose a novel approach to isolate the perfusion of the abdominal organs from the systemic malperfusion of the dying donor. We reasoned that this design could improve blood flow to organs without open surgery, while respecting the ethical principle that cardiac stress not be increased during organ recovery...
February 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/27701917/sensitivity-improvements-of-a-resonance-based-tactile-sensor
#11
Yoshinobu Murayama, Olof A Lindahl
Resonance-based contact-impedance measurement refers to the application of resonance sensors based on the measurement of the changes in the resonance curve of an ultrasonic resonator in contact with a surface. The advantage of the resonance sensor is that it is very sensitive to small changes in the contact impedance. A sensitive micro tactile sensor (MTS) was developed, which measured the elasticity of soft living tissues at the single-cell level. In the present paper, we studied the method of improving the touch and stiffness sensitivity of the MTS...
February 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/27696921/prenatal-identification-of-chd-murmur-using-four-segment-phonocardiographic-signal-analysis
#12
Jitendra Chourasia, Vijay Chourasia, A K Mittra
Congenital heart defects (CHD) are one of the utmost birth defects present in the neonatal after birth and a big challenge for the researchers to identify the structural abnormality during the antepartum period. An algorithm is presented here to identify the presence of CHD through foetal phonocardiographic (fPCG) signals. The recorded fPCG is decomposed using Daubechies4 wavelet with sub-level threshold to remove the noise in the signal. The Shannon energy is used to identify the different peaks of signals and then S1 and S2 according to the intervals between adjacent peaks...
February 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/27696920/stress-distribution-on-short-implants-with-different-designs-a-photoelastic-analysis
#13
Marcelo Coelho Goiato, Rodrigo Antonio de Medeiros, Mariana Vilela Sônego, Taynara Maria Toito de Lima, Aldiéris Alves Pesqueira, Daniela Micheline Dos Santos
Short dental implants have been used as an attempt to avoid bone grafts surgery, however there are few literature reports that evaluate changes to their design. Therefore, the aim of this study was to assess the effect of different short implant design on stress distribution through photoelastic analysis. Six external hexagon (5 × 5 mm) short dental implants with different design were used. Each group was treated with a single crown and a three element fixed partial dental prosthesis, resulting in a total of 12 photoelastic models...
February 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/27689916/a-novel-puborectalis-muscle-artificial-anal-sphincter-system-with-the-module-of-sensory-perception
#14
Hao Wu, Zhiwu Wang, Guozheng Yan, Wentian Jin, Shan Lu, Zerun Zhou
This article presents a novel puborectalis muscle artificial anal sphincter system (PM-AASS) with the module of sensory perception for treating severe faecal incontinence (FI). Due to the implantable feature of PM-AASS, this system applied low-power design and the total energy consumption could drop to 48.8 Ah/d. To reduce the injury of intestine and the pressure exerted on intestine, the actuator, including the structure of tings and the robot mechanism, of PM-AASS was presented and the middle ring was optimised...
February 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/27629019/haemodynamic-of-blood-flow-through-stenotic-aortic-valve
#15
Fatemeh Sadeghpour, Nasser Fatouraee, Mahdi Navidbakhsh
Aortic valve (AV) stenosis is described as the deposition of calcium within the valve leaflets. With the growth of stenosis, haemodynamic, mechanical performances of the AV and blood flow through the valve are changed. In this study, we proposed two fluid-structure interaction (FSI) finite element (FE) models. The hyperelastic material model was considered for leaflets tissue. The leaflet tissue was considered stiffer in stenotic valve than the healthy leaflets because of its calcium content. Therefore, the valve could not open completely and this led to a decrease in the orifice area of the valve...
February 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/27609492/spot-measurement-of-heart-rate-based-on-morphology-of-photoplethysmographic-ppg-signals
#16
P Madhan Mohan, V Nagarajan, J C Vignesh
Due to increasing health consciousness among people, it is imperative to have low-cost health care devices to measure the vital parameters like heart rate and arterial oxygen saturation (SpO2). In this paper, an efficient heart rate monitoring algorithm based on the morphology of photoplethysmography (PPG) signals to measure the spot heart rate (HR) and its real-time implementation is proposed. The algorithm does pre-processing and detects the onsets and systolic peaks of the PPG signal to estimate the heart rate of the subject...
February 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/27892786/publications-update
#17
(no author information available yet)
No abstract text is available yet for this article.
January 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/27892785/news-and-product-update
#18
J Fenner
No abstract text is available yet for this article.
January 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/27681008/using-cloud-models-of-heartbeats-as-the-entity-identifier-to-secure-mobile-devices
#19
Donglai Fu, Yanhua Liu
Mobile devices are extensively used to store more private and often sensitive information. Therefore, it is important to protect them against unauthorised access. Authentication ensures that authorised users can use mobile devices. However, traditional authentication methods, such as numerical or graphic passwords, are vulnerable to passive attacks. For example, an adversary can steal the password by snooping from a shorter distance. To avoid these problems, this study presents a biometric approach that uses cloud models of heartbeats as the entity identifier to secure mobile devices...
January 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/27648845/critical-factors-and-their-impact-on-bioelectrical-impedance-analysis-in-children-a-review
#20
Steven Brantlov, Leigh C Ward, Lars Jødal, Søren Rittig, Aksel Lange
Several guidelines for bioelectrical impedance analysis (BIA) have been prepared for adults, but not for children. For that reason, there is a pressing need to develop a consensus set of guidelines to facilitate standardisation of BIA in this important group. This review provides an introduction to BIA, highlights critical factors that may impact on BIA and identifies areas where there is a need for further research in order to increase the quality of impedance measurements and prediction of body composition in children...
January 2017: Journal of Medical Engineering & Technology
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