Displaying publications 41 - 60 of 91 in total

Abstract:
Sort:
  1. Azudin K, Gan KB, Jaafar R, Ja'afar MH
    Sensors (Basel), 2023 Jul 18;23(14).
    PMID: 37514778 DOI: 10.3390/s23146484
    Not long ago, hearables paved the way for biosensing, fitness, and healthcare monitoring. Smart earbuds today are not only producing sound but also monitoring vital signs. Reliable determination of cardiovascular and pulmonary system information can explore the use of hearables for physiological monitoring. Recent research shows that photoplethysmography (PPG) signals not only contain details on oxygen saturation level (SPO2) but also carry more physiological information including pulse rate, respiration rate, blood pressure, and arterial-related information. The analysis of the PPG signal from the ear has proven to be reliable and accurate in the research setting. (1) Background: The present integrative review explores the existing literature on an in-ear PPG signal and its application. This review aims to identify the current technology and usage of in-ear PPG and existing evidence on in-ear PPG in physiological monitoring. This review also analyzes in-ear (PPG) measurement configuration and principle, waveform characteristics, processing technology, and feature extraction characteristics. (2) Methods: We performed a comprehensive search to discover relevant in-ear PPG articles published until December 2022. The following electronic databases: Institute of Electrical and Electronics Engineers (IEEE), ScienceDirect, Scopus, Web of Science, and PubMed were utilized to conduct the studies addressing the evidence of in-ear PPG in physiological monitoring. (3) Results: Fourteen studies were identified but nine studies were finalized. Eight studies were on different principles and configurations of hearable PPG, and eight studies were on processing technology and feature extraction and its evidence in in-ear physiological monitoring. We also highlighted the limitations and challenges of using in-ear PPG in physiological monitoring. (4) Conclusions: The available evidence has revealed the future of in-ear PPG in physiological monitoring. We have also analyzed the potential limitation and challenges that in-ear PPG will face in processing the signal.
    Matched MeSH terms: Monitoring, Physiologic
  2. Jazayeri SMHM, Jamshidnezhad A
    Malays J Med Sci, 2019 Jan;26(1):5-14.
    PMID: 30914890 DOI: 10.21315/mjms2019.26.1.2
    The development of intelligent software in recent years has grown rapidly. Mobile health has become a field of interest as a tool for childcare, especially as a means for parents of children with diverse diseases and a resource to promote their health conditions. Current systematic review was conducted to survey the functionalities of available applications on the mobile platform to support pediatrics intelligent diagnosis and children healthcare. Results which met the inclusion criteria (such as patient monitoring, decision support, diagnosis support) were obtained, assessed and organised into a checklist. In this study, 379 potential apps were identified using the search feature in Apple App Store and Google Play Store. After careful consideration of the selected apps, only three (Google Play Store) and one (iTunes Store), fulfilled all the general inclusion criteria and special criteria, such as intelligence tools. The results showed that Artificial Intelligence (AI) was used minimally in diagnostic apps due to a limited amount of mobile hardware and software, such as the reliable programming of intelligent algorithms.
    Matched MeSH terms: Monitoring, Physiologic
  3. Algamili AS, Khir MHM, Dennis JO, Ahmed AY, Alabsi SS, Ba Hashwan SS, et al.
    Nanoscale Res Lett, 2021 Jan 26;16(1):16.
    PMID: 33496852 DOI: 10.1186/s11671-021-03481-7
    Over the last couple of decades, the advancement in Microelectromechanical System (MEMS) devices is highly demanded for integrating the economically miniaturized sensors with fabricating technology. A sensor is a system that detects and responds to multiple physical inputs and converting them into analogue or digital forms. The sensor transforms these variations into a form which can be utilized as a marker to monitor the device variable. MEMS exhibits excellent feasibility in miniaturization sensors due to its small dimension, low power consumption, superior performance, and, batch-fabrication. This article presents the recent developments in standard actuation and sensing mechanisms that can serve MEMS-based devices, which is expected to revolutionize almost many product categories in the current era. The featured principles of actuating, sensing mechanisms and real-life applications have also been discussed. Proper understanding of the actuating and sensing mechanisms for the MEMS-based devices can play a vital role in effective selection for novel and complex application design.
    Matched MeSH terms: Monitoring, Physiologic
  4. Zakaria SM, Visvanathan R, Kamarudin K, Yeon AS, Md Shakaff AY, Zakaria A, et al.
    Sensors (Basel), 2015;15(12):30894-912.
    PMID: 26690175 DOI: 10.3390/s151229834
    The lack of information on ground truth gas dispersion and experiment verification information has impeded the development of mobile olfaction systems, especially for real-world conditions. In this paper, an integrated testbed for mobile gas sensing experiments is presented. The integrated 3 m × 6 m testbed was built to provide real-time ground truth information for mobile olfaction system development. The testbed consists of a 72-gas-sensor array, namely Large Gas Sensor Array (LGSA), a localization system based on cameras and a wireless communication backbone for robot communication and integration into the testbed system. Furthermore, the data collected from the testbed may be streamed into a simulation environment to expedite development. Calibration results using ethanol have shown that using a large number of gas sensor in the LGSA is feasible and can produce coherent signals when exposed to the same concentrations. The results have shown that the testbed was able to capture the time varying characteristics and the variability of gas plume in a 2 h experiment thus providing time dependent ground truth concentration maps. The authors have demonstrated the ability of the mobile olfaction testbed to monitor, verify and thus, provide insight to gas distribution mapping experiment.
    Matched MeSH terms: Monitoring, Physiologic
  5. Chan YK, Khan ZH
    Acta Anaesthesiol Taiwan, 2011 Dec;49(4):154-8.
    PMID: 22221689 DOI: 10.1016/j.aat.2011.11.002
    Hemodynamic monitoring provides us with refined details about the cardiovascular system. In spite of increased availability of the monitoring process and monitoring equipment, hemodynamic monitoring has not significantly improved survival outcome. Care providers should be cognizant of the role of the cardiovascular system and its importance in oxygen delivery to the cells in order to sustain life. Effective hemodynamic monitoring should be able to delineate how well the system is performing in carrying out this role. Different hemodynamic monitors serve in this role to a different extent; some provide very little information on this. The cardiovascular system is only one of the many systems that need to function optimally for survival; others of equal importance include the integrity of the airway, the breathing process, the adequacy of hemoglobin level, and the health of the tissue bed, especially in the brain and the heart. Advances in hemodynamic monitoring with focus on oxygen delivery at the cellular level may ultimately provide the edge to effective monitoring that can impact outcome.
    Matched MeSH terms: Monitoring, Physiologic*
  6. Khoo CS, Lee D, Park KM, In Lee B, Kim SE
    BMC Neurol, 2019 Dec 30;19(1):348.
    PMID: 31888520 DOI: 10.1186/s12883-019-1575-0
    BACKGROUND: Chest pain as the primary manifestation of epilepsy is extremely rare and has only been reported once to date.

    CASE PRESENTATION: We herein describe a 47-year-old woman with recurrent chest pain for 3 years. The cause of her chest pain remained elusive despite extensive investigations including comprehensive cardiac work-up. She was referred to the neurology clinic for one episode of confusion. Video-electroencephalographic monitoring detected unequivocal ictal changes during her habitual chest pain events. She has remained chest pain (seizure) free with a single antiseizure drug.

    CONCLUSIONS: This case underlines the importance of epilepsy as a rare yet treatable cause of recurrent chest pain. Further studies are required to determine the pathophysiology of ictal chest pain.

    Matched MeSH terms: Monitoring, Physiologic
  7. Krishna SR
    Anaesth Intensive Care, 1975 May;3(2):122-6.
    PMID: 1155754
    Factors that governed the setting up of a multipurpose, temporary Intensive Care Unit of six beds, in a remote area of Malaysia and the experience of operating it for more than two and a half years are outlined.
    Matched MeSH terms: Monitoring, Physiologic
  8. Oung QW, Muthusamy H, Lee HL, Basah SN, Yaacob S, Sarillee M, et al.
    Sensors (Basel), 2015 Aug 31;15(9):21710-45.
    PMID: 26404288 DOI: 10.3390/s150921710
    Parkinson's Disease (PD) is characterized as the commonest neurodegenerative illness that gradually degenerates the central nervous system. The goal of this review is to come out with a summary of the recent progress of numerous forms of sensors and systems that are related to diagnosis of PD in the past decades. The paper reviews the substantial researches on the application of technological tools (objective techniques) in the PD field applying different types of sensors proposed by previous researchers. In addition, this also includes the use of clinical tools (subjective techniques) for PD assessments, for instance, patient self-reports, patient diaries and the international gold standard reference scale, Unified Parkinson Disease Rating Scale (UPDRS). Comparative studies and critical descriptions of these approaches have been highlighted in this paper, giving an insight on the current state of the art. It is followed by explaining the merits of the multiple sensor fusion platform compared to single sensor platform for better monitoring progression of PD, and ends with thoughts about the future direction towards the need of multimodal sensor integration platform for the assessment of PD.
    Matched MeSH terms: Monitoring, Physiologic
  9. Muhammad Aniq Shazni, Lee MW, Lee HW
    Sains Malaysiana, 2017;46:1155-1161.
    In this work, graphene has been utilized as the sensing material for the development of a highly-sensitive flexible pressure sensor platform. It has been demonstrated that a graphene-based pressure sensor platform that is able to measure pressure change of up to 3 psi with a sensitivity of 0.042 psi-1 and a non-linearity of less than 1% has been accomplished. The developed device, which resides on a flexible platform, will be applicable for integration in continuous wearables health-care monitoring system for the measurement of blood pressure.
    Matched MeSH terms: Monitoring, Physiologic
  10. Liam CK
    Med J Malaysia, 1996 Mar;51(1):82-8.
    PMID: 10967984
    The gold standard for the diagnosis and evaluation of sleep apnoea is overnight polysomnography. However, full polysomnography is an expensive and labour intensive procedure which requires the patient to sleep overnight in a hospital sleep laboratory. This paper describes the use of a commercial ambulatory microprocessor based system (Edentrace II) for the evaluation of fifteen patients aged 24 to 68 years with clinical features suggestive of sleep apnoea syndrome. With this portable recording system, sleep studies can be carried out unattended in a hospital ward and computer-assisted scoring of respiratory events can be performed.
    Study site: Chest clinic, wards, University Malaya Medical Centre (UMMC), Kuala Lumpur, Malaysia
    Matched MeSH terms: Monitoring, Physiologic*
  11. Hussin Z, Lim VKE
    Med J Malaysia, 1982 Jun;37(2):104-7.
    PMID: 7132829
    Gentamicin is an aminoglycoside antibiotic which is commonly used in the treatment of serious Gram-negative infections. However, gentamicin like other aminoglycosides, has a narrow therapeutic index and is potentially ototoxic and nephrotoxic. Blood levels following administration of gentamicin has been shown to be highly unpredictable and monitoring of gentamicin levels is necessary to ensure effective therapeutic levels as well as to avoid toxicity. The Department of Microbiology, Universiti Kebangsaan Malaysia offers such a monitoring service. This paper analyses the results of 135 such estimations performed between August 1979 and May 1981. It is shown that a significant proportion of patients were receiving either too much or too little gentamicin. Empirical determinations of dosages is unsatisfactory and as the microbiological assay method of determining gentamicin levels is both easy to perform and inexpensive, such a service should be offered by all general hospitals in Malaysia.
    Matched MeSH terms: Monitoring, Physiologic
  12. Dahlan Mohd, Mahathir Mohamed
    MyJurnal
    Polymer blends of 60/40 NR/HDPE were prepared using Brabender PL2000 Plasticorder with 60g capacity. The blends were added with radiation-sensitive natural rubber (NR)-based compatibilizer, known as LENRA. They were irradiated with electron-beam radiation at various doses. The efficacy of the compatibilizer was monitored by measuring various properties of the blends such as physical and dynamic mechanical properties including morphological studies by electron microscopic technique. Early results show that the addition of LENRA improves the properties of the TPNR blends.
    Matched MeSH terms: Monitoring, Physiologic
  13. Mostafa SA, Mustapha A, Mohammed MA, Ahmad MS, Mahmoud MA
    Int J Med Inform, 2018 04;112:173-184.
    PMID: 29500017 DOI: 10.1016/j.ijmedinf.2018.02.001
    Autonomous agents are being widely used in many systems, such as ambient assisted-living systems, to perform tasks on behalf of humans. However, these systems usually operate in complex environments that entail uncertain, highly dynamic, or irregular workload. In such environments, autonomous agents tend to make decisions that lead to undesirable outcomes. In this paper, we propose a fuzzy-logic-based adjustable autonomy (FLAA) model to manage the autonomy of multi-agent systems that are operating in complex environments. This model aims to facilitate the autonomy management of agents and help them make competent autonomous decisions. The FLAA model employs fuzzy logic to quantitatively measure and distribute autonomy among several agents based on their performance. We implement and test this model in the Automated Elderly Movements Monitoring (AEMM-Care) system, which uses agents to monitor the daily movement activities of elderly users and perform fall detection and prevention tasks in a complex environment. The test results show that the FLAA model improves the accuracy and performance of these agents in detecting and preventing falls.
    Matched MeSH terms: Monitoring, Physiologic/methods*
  14. Mat Zin S, Md Rasib SZ, Suhaimi FM, Mariatti M
    Biomed Eng Online, 2021 Feb 06;20(1):17.
    PMID: 33549118 DOI: 10.1186/s12938-021-00854-y
    The tongue and hard palate play an essential role in the production of sound during continuous speech. Appropriate tongue and hard palate contacts will ensure proper sound production. Electropalatography, also known as EPG, is a device that can be used to identify the location of the tongue and hard palate contact. It can also be used by a speech therapist to help patients who have a speech disorder. Among the group with the disease are cleft palate, Down syndrome, glossectomy, and autism patients. Besides identifying the contact location, EPG is a useful medical device that has been continuously developed based on the patient's needs and treatment advancement. This article reviews the technology of electropalatography since the early introduction of the device. It also discusses the development process and the drawbacks of the previous EPG systems, resulting in the EPG's upgraded system and technology. This review suggests additional features that can be useful for the future development of the EPG. The latest technology can be incorporated into the EPG system to provide a more convenient method. There are some elements to be considered in the development of EPG's new technology that were discussed in this study. The elements are essential to provide more convenience for the patient during speech therapy. New technology can accelerate the growth of medical devices, particularly on the development of speech therapy equipment that should be based on the latest technological advancements available. Thus, the advanced EPG system suggested in this article may expand the usage of the EPG and serve as a tool to provide speech therapy treatment services and not limited to monitoring only.
    Matched MeSH terms: Monitoring, Physiologic/methods*
  15. Mikail M, Putra TATR, Suri AS, Hezmee MNM, Marina MT
    Vet World, 2017 Nov;10(11):1297-1300.
    PMID: 29263588 DOI: 10.14202/vetworld.2017.1297-1300
    Aim: Farms that are neighboring wildlife sanctuaries are at risk of spillover infection from wildlife, and the objective of this research is to examine the species diversity of Malaysian fruit bats in livestock farm in determining the possible risk of spill over infection to livestock.

    Materials and Methods: Fifty individual fruit bats were captured using six mists net, from May to July 2017. The nets were set at dusk (1830 h) as bats emerge for foraging and monitored at every 30-min intervals throughout the night until dawn when they returned to the roost. The nets were closed for the day until next night, and captured bats were identified to species levels.

    Results: All the captured bats were mega chiropterans, and Cynopterus brachyotis was the highest captured species, representing 40% of the total capture. Shannon-Weiner index is 2.80, and Simpson index is 0.2. Our result suggests that there is a degree of species dominance with low diversity in Lenggong Livestock Breeding Center.

    Conclusion: We concluded that fruit bats are indeed, encroaching livestock areas and the species identified could be a potential source of infection to susceptible livestock. Hence, an active surveillance should be embarked on farms that border wildlife sanctuaries.

    Matched MeSH terms: Monitoring, Physiologic
  16. Izneid BA, Fadhel MI, Al-Kharazi T, Ali M, Miloud S
    J Food Sci Technol, 2014 Nov;51(11):3244-52.
    PMID: 26396317 DOI: 10.1007/s13197-012-0880-z
    A portable infrared spectroscopy system has been designed and developed for assessment of quality of mango fruit. This paper describes the design and development of a fruit quality grading device using reflectance mode optical sensor. The experiment was conducted to obtain the best results from the system and the device was correlated according to the measured output. In the experiment, several samples of mango fruits have been monitored for six days to study the relation how fruit quality increases with time as fruit ripens. Between the unripe mango fruit and the ripest one, a range of 3.5 V to 4.2 V was measured by the developed system. The rate of quality increase was calculated as an average of 6.7 mV per day. These results were used to correlate the final hardware and software development of the device. The results demonstrate that, portable near infrared spectroscopy is feasible for evaluating mango quality non-destructively.
    Matched MeSH terms: Monitoring, Physiologic
  17. Ramli N, Nurull BS, Hairi NN, Mimiwati Z
    Prev Med, 2013;57 Suppl:S47-9.
    PMID: 23352960 DOI: 10.1016/j.ypmed.2013.01.007
    In the absence of raised intraocular pressure (IOP), haemodynamic parameters have been implicated in the development of normal tension glaucoma (NTG). The purpose of this study is to compare 24-hour IOP and haemodynamic parameters in NTG patients and non-glaucoma patients.
    Matched MeSH terms: Monitoring, Physiologic
  18. Poh AH, Adikan FRM, Moghavvemi M
    Med Biol Eng Comput, 2020 Jun;58(6):1159-1175.
    PMID: 32319030 DOI: 10.1007/s11517-019-02077-9
    The study and applications of in vivo skin optics have been openly documented as early as the year 1954, or possibly earlier. To date, challenges in analyzing the complexities of this field remain, with wide scopes requiring more scrutiny. Recent advances in spectroscopic research and multivariate analytics allow a closer look into applications potentially for detecting or monitoring diseases. One of the challenges in this field is in establishing a reference for applications which correspond to certain bandwidths. This article reviews the scope on past research on skin spectroscopy, and the clinical aspects which have or may have applications on disease detection or enhancing diagnostics. A summary is supplied on the technicalities surrounding the measurements reported in literature, focused towards the wavelength-dependent applications in themes central to the respective research. Analytics on the topology of the papers' data cited in this work is also provided for a statistical perspective. In short, this paper strives to immediately inform the reader with possible applications via the spectroscopic devices at hand. Graphical Abstract .
    Matched MeSH terms: Monitoring, Physiologic/methods
  19. Saiful Mohammad Iezham Suhaimi, Nouruddeen Bashir, Nor Asiah Muhamad, Mohd Aizam Talib
    MyJurnal
    Contaminated and ageing transmission line insulators often suffer from temporary or permanent loss of their insulating properties due to flashover resulting in power system failure. Surface discharges are precursors to flashover. To pre-empt any occurrence of flashovers, utility companies monitor the conditions of their insulators. There are numerous insulator surface monitoring techniques such as Leakage Current, Acoustics, and Infrared. However, these techniques may not be suitable for in-situ condition monitoring of the insulators as they are prone to noise, affected by environmental conditions or contact methods. Monitoring of the UV signals emitted by the surface discharges of these insulators has been reported to be a promising technique. However, comprehensive studies on this technique is lacking, especially on aged insulators. This paper investigated the UV signals of contaminated and aged insulators detected during surface discharge activities using UV pulse method. The time and frequency domain of the UV signals were analysed for a group of insulator samples having varying levels of contamination and phases of ageing. Results show that there is a strong correlation between the contamination level and ageing of the insulators with the amplitude and harmonic components of the UV signals. This correlation can useful to monitor in-service insulator surface conditions.
    Matched MeSH terms: Monitoring, Physiologic
  20. Noraishah Othmanl, Nor Pa' iza M. Hasani, Juhari Mohd Yusof, Roslan Yahya, Mohd Amirul Syafiq
    MyJurnal
    Flow measurement is a critical element for liquid resources monitoring for various applications in many industrial systems. The purposes of the study are to determine the flow rate of liquid system in flow rig using radiotracer techniques and to compare the result with that obtained by the conventional flow meters. The flow rig consists of 58.7m long and 20cm diameter pipeline that can accommodate about 0.296m3 of liquid. Tap water was used as liquid flow in pipeline and conventional flow meters were also installed at the flow rig. Radiotracer was injected as a sharp pulse into the inlet p.peline. The pulse was monitored at the inlet and various points along the outlet pipeline using collimated scintillation detector. The peak to peak and total count methods were applied for radiotracer techniques and showed the comparable results with conventional flow meter.
    Matched MeSH terms: Monitoring, Physiologic
Filters
Contact Us

Please provide feedback to Administrator (afdal@afpm.org.my)

External Links