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Zhang GW, Gong M, Li HJ, Wang S, Gong DX. The "Trinity" smart hospital construction policy promotes the development of hospitals and health management in China. Front Public Health 2023; 11:1219407. [PMID: 37546298 PMCID: PMC10402917 DOI: 10.3389/fpubh.2023.1219407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 06/28/2023] [Indexed: 08/08/2023] Open
Abstract
Recently, in order to comprehensively promote the development of medical institutions and solve the nationwide problems in the healthcare fields, the government of China developed an innovative national policy of "Trinity" smart hospital construction, which includes "smart medicine," "smart services," and "smart management". The prototype of the evaluation system has been established, and a large number of construction achievements have emerged in many hospitals. In this article, the summary of this field was performed to provide a reference for medical workers, managers of hospitals, and policymakers.
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Affiliation(s)
- Guang-Wei Zhang
- Department of Smart Hospital Management, The First Hospital of China Medical University, Shenyang, China
- The Internet Hospital of the First Hospital of China Medical University, Shenyang, China
- The Internet Hospital Branch of the Chinese Research Hospital Association, Beijing, China
| | | | - Hui-Jun Li
- Shenyang Medical & Film Science and Technology Co. Ltd., Shenyang, China
- Enduring Medicine Smart Innovation Research Institute, Shenyang, China
| | - Shuang Wang
- Department of General Practice, The First Hospital of China Medical University, Shenyang, China
| | - Da-Xin Gong
- Department of Smart Hospital Management, The First Hospital of China Medical University, Shenyang, China
- The Internet Hospital of the First Hospital of China Medical University, Shenyang, China
- The Internet Hospital Branch of the Chinese Research Hospital Association, Beijing, China
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Seah JJ, Zhao J, Wang DY, Lee HP. Review on the Advancements of Stethoscope Types in Chest Auscultation. Diagnostics (Basel) 2023; 13:diagnostics13091545. [PMID: 37174938 PMCID: PMC10177339 DOI: 10.3390/diagnostics13091545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 04/16/2023] [Accepted: 04/20/2023] [Indexed: 05/15/2023] Open
Abstract
Stethoscopes were originally designed for the auscultation of a patient's chest for the purpose of listening to lung and heart sounds. These aid medical professionals in their evaluation of the cardiovascular and respiratory systems, as well as in other applications, such as listening to bowel sounds in the gastrointestinal system or assessing for vascular bruits. Listening to internal sounds during chest auscultation aids healthcare professionals in their diagnosis of a patient's illness. We performed an extensive literature review on the currently available stethoscopes specifically for use in chest auscultation. By understanding the specificities of the different stethoscopes available, healthcare professionals can capitalize on their beneficial features, to serve both clinical and educational purposes. Additionally, the ongoing COVID-19 pandemic has also highlighted the unique application of digital stethoscopes for telemedicine. Thus, the advantages and limitations of digital stethoscopes are reviewed. Lastly, to determine the best available stethoscopes in the healthcare industry, this literature review explored various benchmarking methods that can be used to identify areas of improvement for existing stethoscopes, as well as to serve as a standard for the general comparison of stethoscope quality. The potential use of digital stethoscopes for telemedicine amidst ongoing technological advancements in wearable sensors and modern communication facilities such as 5G are also discussed. Based on the ongoing trend in advancements in wearable technology, telemedicine, and smart hospitals, understanding the benefits and limitations of the digital stethoscope is an essential consideration for potential equipment deployment, especially during the height of the current COVID-19 pandemic and, more importantly, for future healthcare crises when human and resource mobility is restricted.
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Affiliation(s)
- Jun Jie Seah
- Department of Otolaryngology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
| | - Jiale Zhao
- Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore
| | - De Yun Wang
- Department of Otolaryngology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
- Infectious Diseases Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117545, Singapore
| | - Heow Pueh Lee
- Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore
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Zhu X, Tao Y, Zhu R, Wu D, Ming WK. Impact of Hospital Characteristics and Governance Structure on the Adoption of Tracking Technologies for Clinical and Supply Chain Use: Longitudinal Study of US Hospitals. J Med Internet Res 2022; 24:e33742. [PMID: 35617002 PMCID: PMC9185348 DOI: 10.2196/33742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 11/14/2021] [Accepted: 04/14/2022] [Indexed: 11/18/2022] Open
Abstract
Background Despite the increasing adoption rate of tracking technologies in hospitals in the United States, few empirical studies have examined the factors involved in such adoption within different use contexts (eg, clinical and supply chain use contexts). To date, no study has systematically examined how governance structures impact technology adoption in different use contexts in hospitals. Given that the hospital governance structure fundamentally governs health care workflows and operations, understanding its critical role provides a solid foundation from which to explore factors involved in the adoption of tracking technologies in hospitals. Objective This study aims to compare critical factors associated with the adoption of tracking technologies for clinical and supply chain uses and examine how governance structure types affect the adoption of tracking technologies in hospitals. Methods This study was conducted based on a comprehensive and longitudinal national census data set comprising 3623 unique hospitals across 50 states in the United States from 2012 to 2015. Using mixed effects population logistic regression models to account for the effects within and between hospitals, we captured and examined the effects of hospital characteristics, locations, and governance structure on adjustments to the innate development of tracking technology over time. Results From 2012 to 2015, we discovered that the proportion of hospitals in which tracking technologies were fully implemented for clinical use increased from 36.34% (782/2152) to 54.63% (1316/2409), and that for supply chain use increased from 28.58% (615/2152) to 41.3% (995/2409). We also discovered that adoption factors impact the clinical and supply chain use contexts differently. In the clinical use context, compared with hospitals located in urban areas, hospitals in rural areas (odds ratio [OR] 0.68, 95% CI 0.56-0.80) are less likely to fully adopt tracking technologies. In the context of supply chain use, the type of governance structure influences tracking technology adoption. Compared with hospitals not affiliated with a health system, implementation rates increased as hospitals affiliated with a more centralized health system—1.9-fold increase (OR 1.87, 95% CI 1.60-2.13) for decentralized or independent hospitals, 2.4-fold increase (OR 2.40, 95% CI 2.07-2.80) for moderately centralized health systems, and 3.1-fold increase for centralized health systems (OR 3.07, 95% CI 2.67-3.53). Conclusions As the first of such type of studies, we provided a longitudinal overview of how hospital characteristics and governance structure jointly affect adoption rates of tracking technology in both clinical and supply chain use contexts, which is essential for developing intelligent infrastructure for smart hospital systems. This study informs researchers, health care providers, and policy makers that hospital characteristics, locations, and governance structures have different impacts on the adoption of tracking technologies for clinical and supply chain use and on health resource disparities among hospitals of different sizes, locations, and governance structures.
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Affiliation(s)
- Xiao Zhu
- Department of Clinical Pharmacy and Pharmacy Administration, School of Pharmacy, Fudan University, Shanghai, China
| | - Youyou Tao
- Department of Information Systems and Business Analytics, College of Business Administration, Loyola Marymount University, Los Angeles, CA, United States
| | - Ruilin Zhu
- Management Science Department, Lancaster University Management School, Lancaster University, Lancaster, United Kingdom
| | - Dezhi Wu
- Department of Integrated Information Technology, College of Engineering and Computing, University of South Carolina, Columbia, SC, United States
| | - Wai-Kit Ming
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Hong Kong, Hong Kong
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De Pretis F, van Gils M, Forsberg MM. A smart hospital-driven approach to precision pharmacovigilance. Trends Pharmacol Sci 2022; 43:473-481. [PMID: 35490032 DOI: 10.1016/j.tips.2022.03.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 02/25/2022] [Accepted: 03/22/2022] [Indexed: 01/03/2023]
Abstract
Researchers, regulatory agencies, and the pharmaceutical industry are moving towards precision pharmacovigilance as a comprehensive framework for drug safety assessment, at the service of the individual patient, by clustering specific risk groups in different databases. This article explores its implementation by focusing on: (i) designing a new data collection infrastructure, (ii) exploring new computational methods suitable for drug safety data, and (iii) providing a computer-aided framework for distributed clinical decisions with the aim of compiling a personalized information leaflet with specific reference to a drug's risks and adverse drug reactions. These goals can be achieved by using 'smart hospitals' as the principal data sources and by employing methods of precision medicine and medical statistics to supplement current public health decisions.
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Affiliation(s)
- Francesco De Pretis
- VTT Technical Research Centre of Finland Ltd, 70210 Kuopio, Finland; Department of Communication and Economics, University of Modena and Reggio Emilia, 42121 Reggio Emilia, Italy.
| | - Mark van Gils
- Faculty of Medicine and Health Technology, Tampere University, 33720 Tampere, Finland
| | - Markus M Forsberg
- VTT Technical Research Centre of Finland Ltd, 70210 Kuopio, Finland; School of Pharmacy, University of Eastern Finland, 70211 Kuopio, Finland
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Silva FA, Brito C, Araújo G, Fé I, Tyan M, Lee JW, Nguyen TA, Maciel PRM. Model-Driven Impact Quantification of Energy Resource Redundancy and Server Rejuvenation on the Dependability of Medical Sensor Networks in Smart Hospitals. Sensors (Basel) 2022; 22:s22041595. [PMID: 35214499 PMCID: PMC8878356 DOI: 10.3390/s22041595] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 01/31/2022] [Accepted: 02/13/2022] [Indexed: 01/31/2023]
Abstract
The spread of the Coronavirus (COVID-19) pandemic across countries all over the world urges governments to revolutionize the traditional medical hospitals/centers to provide sustainable and trustworthy medical services to patients under the pressure of the huge overload on the computing systems of wireless sensor networks (WSNs) for medical monitoring as well as treatment services of medical professionals. Uncertain malfunctions in any part of the medical computing infrastructure, from its power system in a remote area to the local computing systems at a smart hospital, can cause critical failures in medical monitoring services, which could lead to a fatal loss of human life in the worst case. Therefore, early design in the medical computing infrastructure’s power and computing systems needs to carefully consider the dependability characteristics, including the reliability and availability of the WSNs in smart hospitals under an uncertain outage of any part of the energy resources or failures of computing servers, especially due to software aging. In that regard, we propose reliability and availability models adopting stochastic Petri net (SPN) to quantify the impact of energy resources and server rejuvenation on the dependability of medical sensor networks. Three different availability models (A, B, and C) are developed in accordance with various operational configurations of a smart hospital’s computing infrastructure to assimilate the impact of energy resource redundancy and server rejuvenation techniques for high availability. Moreover, a comprehensive sensitivity analysis is performed to investigate the components that impose the greatest impact on the system availability. The analysis results indicate different impacts of the considered configurations on the WSN’s operational availability in smart hospitals, particularly 99.40%, 99.53%, and 99.64% for the configurations A, B, and C, respectively. This result highlights the difference of 21 h of downtime per year when comparing the worst with the best case. This study can help leverage the early design of smart hospitals considering its wireless medical sensor networks’ dependability in quality of service to cope with overloading medical services in world-wide virus pandemics.
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Affiliation(s)
- Francisco Airton Silva
- Laboratory of Applied Research to Distributed Systems (PASID), Universidade Federal do Piauí (UFPI), Picos 64607-670, Brazil; (F.A.S.); (C.B.); (G.A.); (I.F.)
| | - Carlos Brito
- Laboratory of Applied Research to Distributed Systems (PASID), Universidade Federal do Piauí (UFPI), Picos 64607-670, Brazil; (F.A.S.); (C.B.); (G.A.); (I.F.)
| | - Gabriel Araújo
- Laboratory of Applied Research to Distributed Systems (PASID), Universidade Federal do Piauí (UFPI), Picos 64607-670, Brazil; (F.A.S.); (C.B.); (G.A.); (I.F.)
| | - Iure Fé
- Laboratory of Applied Research to Distributed Systems (PASID), Universidade Federal do Piauí (UFPI), Picos 64607-670, Brazil; (F.A.S.); (C.B.); (G.A.); (I.F.)
| | - Maxim Tyan
- Konkuk Aerospace Design-Airworthiness Research Institute (KADA), Konkuk University, Seoul 05029, Korea
- Correspondence: (M.T.); (J.-W.L.); (T.A.N.)
| | - Jae-Woo Lee
- Department of Aerospace Information Engineering, Konkuk University, Seoul 05029, Korea
- Correspondence: (M.T.); (J.-W.L.); (T.A.N.)
| | - Tuan Anh Nguyen
- Konkuk Aerospace Design-Airworthiness Research Institute (KADA), Konkuk University, Seoul 05029, Korea
- Correspondence: (M.T.); (J.-W.L.); (T.A.N.)
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Zhang Z, Zheng X, An K, He Y, Wang T, Zhou R, Zheng Q, Nuo M, Liang J, Lei J. Current Status of the Health Information Technology Industry in China from the China Hospital Information Network Conference: Cross-sectional Study of Participating Companies. JMIR Med Inform 2022; 10:e33600. [PMID: 35014959 PMCID: PMC8790697 DOI: 10.2196/33600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 10/09/2021] [Accepted: 11/14/2021] [Indexed: 11/20/2022] Open
Abstract
Background The China Hospital Information Network Conference (CHINC) is one of the most influential academic and technical exchange activities in medical informatics and medical informatization in China. It collects frontier ideas in medical information and has an important reference value for the analysis of China's medical information industry development. Objective This study summarizes the current situation and future development of China's medical information industry and provides a future reference for China and abroad in the future by analyzing the characteristics of CHINC exhibitors in 2021. Methods The list of enterprises and participating keywords were obtained from the official website of CHINC. Basic characteristics of the enterprises, industrial fields, applied technologies, company concepts, and other information were collected from the TianYanCha website and the VBDATA company library. Descriptive analysis was used to analyze the collected data, and we summarized the future development directions. Results A total of 205 enterprises officially participated in the exhibition. Most of the enterprises were newly founded, of which 61.9% (127/205) were founded in the past 10 years. The majority of these enterprises were from first-tier cities, and 79.02% (162/205) were from Beijing, Zhejiang, Guangdong, Shanghai, and Jiangsu Provinces. The median registered capital is 16.67 million RMB (about US $2.61 million), and there are 35 (72.2%) enterprises with a registered capital of more than 100 million RMB (about US $15.68 million), 17 (8.3%) of which are already listed. A total of 126 enterprises were found in the VBDATA company library, of which 39 (30.9%) are information technology vendors and 57 (45.2%) are application technology vendors. In addition, 16 of the 57 (28%) use artificial intelligence technology. Smart medicine and internet hospitals were the focus of the enterprises participating in this conference. Conclusions China's tertiary hospital informatization has basically completed the construction of the primary stage. The average grade of hospital electronic medical records exceeds grade 3, and 78.13% of the provinces have reached grade 3 or above. The characteristics are as follows: On the one hand, China's medical information industry is focusing on the construction of smart hospitals, including intelligent systems supporting doctors' scientific research, diagnosis-related group intelligent operation systems, and office automation systems supporting hospital management, single-disease clinical decision support systems assisting doctors' clinical care, and intelligent internet of things for logistics. On the other hand, the construction of a compact county medical community is becoming a new focus of enterprises under the guidance of practical needs and national policies to improve the quality of grassroots health services. In addition, whole-course management and digital therapy will also become a new hotspot in the future.
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Affiliation(s)
- Zhongan Zhang
- Department of Information Center, Affiliated Qingdao Central Hospital, Qingdao University, Qingdao, China
| | - Xu Zheng
- Peking University Third Hospital, Beijing, China.,Center for Medical Informatics, Health Science Center, Peking University, Beijing, China
| | - Kai An
- Peking University Third Hospital, Beijing, China.,Center for Medical Informatics, Health Science Center, Peking University, Beijing, China
| | - Yunfan He
- School of Public Health, Zhejiang University, Hangzhou, China
| | - Tong Wang
- Department of Medical Informatics, School of Public Health, Jilin University, Changchun, China
| | - Ruizhu Zhou
- Department of Applied Mathematics, Northwestern Polytechnical University, Xian, China
| | - Qilin Zheng
- Department of Bioinformatics and Biostatistics, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Mingfu Nuo
- Institute of Medical Technology, Health Science Center, Peking University, Beijing, China
| | - Jun Liang
- Information Technology Center, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, School of Medicine, Zhejiang University, Hangzhou, China
| | - Jianbo Lei
- Center for Medical Informatics, Health Science Center, Peking University, Beijing, China.,Institute of Medical Technology, Health Science Center, Peking University, Beijing, China.,School of Medical Informatics and Engineering, Southwest Medical University, Luzhou, China
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Chu ETH, Huang ZZ. DBOS: A Dialog-Based Object Query System for Hospital Nurses. Sensors (Basel) 2020; 20:s20226639. [PMID: 33228178 PMCID: PMC7699578 DOI: 10.3390/s20226639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 11/14/2020] [Accepted: 11/17/2020] [Indexed: 06/11/2023]
Abstract
Due to the advance of indoor positioning technology, it is now possible to trace mobile medical equipment (such as electrocardiography machines, patient monitors, and so on) being moved around a hospital ward. With the support of an object tracking system, nurses can easily locate and find a device, especially when they prepare for a shift change or a medical treatment. As nurses usually face high workloads, it is highly desirable to provide nurses with a user-friendly search interface integrated into a popular mobile app that they use daily. For this, DBOS, a dialog-based object query system, is proposed, which simulates a real conversation with users via the Line messaging app's chatbot interface. A hybrid method that combines cosine similarity (CS) and term frequency-inverse document frequency (TF-IDF) is used to determine user intent. The result is returned to the user through Line's interface. To evaluate the applicability of DBOS, 70 search queries given by a head nurse were tested. DBOS was compared with CS, TF-IDF, and Facebook Wit.ai respectively. The experiment results show that DBOS outperforms the abovementioned methods and can achieve a 92.8% accuracy in identifying user intent.
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Huang BC, Hsu J, Chu ETH, Wu HM. ARBIN: Augmented Reality Based Indoor Navigation System. Sensors (Basel) 2020; 20:s20205890. [PMID: 33080918 PMCID: PMC7589552 DOI: 10.3390/s20205890] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 09/25/2020] [Accepted: 10/12/2020] [Indexed: 10/31/2022]
Abstract
Due to the popularity of indoor positioning technology, indoor navigation applications have been deployed in large buildings, such as hospitals, airports, and train stations, to guide visitors to their destinations. A commonly-used user interface, shown on smartphones, is a 2D floor map with a route to the destination. The navigation instructions, such as turn left, turn right, and go straight, pop up on the screen when users come to an intersection. However, owing to the restrictions of a 2D navigation map, users may face mental pressure and get confused while they are making a connection between the real environment and the 2D navigation map before moving forward. For this reason, we developed ARBIN, an augmented reality-based navigation system, which posts navigation instructions on the screen of real-world environments for ease of use. Thus, there is no need for users to make a connection between the navigation instructions and the real-world environment. In order to evaluate the applicability of ARBIN, a series of experiments were conducted in the outpatient area of the National Taiwan University Hospital YunLin Branch, which is nearly 1800 m2, with 35 destinations and points of interests, such as a cardiovascular clinic, x-ray examination room, pharmacy, and so on. Four different types of smartphone were adopted for evaluation. Our results show that ARBIN can achieve 3 to 5 m accuracy, and provide users with correct instructions on their way to the destinations. ARBIN proved to be a practical solution for indoor navigation, especially for large buildings.
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Affiliation(s)
- Bo-Chen Huang
- Department of Computer Science and Information Engineering, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan;
| | - Jiun Hsu
- National Taiwan University Hospital YunLin Branch, Yunlin 640203, Taiwan; (J.H.); (H.-M.W.)
| | - Edward T.-H. Chu
- Department of Computer Science and Information Engineering, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan;
- Correspondence: ; Tel.: +886-05-534-2601-4519
| | - Hui-Mei Wu
- National Taiwan University Hospital YunLin Branch, Yunlin 640203, Taiwan; (J.H.); (H.-M.W.)
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Kartakis S, Sakkalis V, Tourlakis P, Zacharioudakis G, Stephanidis C. Enhancing health care delivery through ambient intelligence applications. Sensors (Basel) 2012; 12:11435-50. [PMID: 23112664 PMCID: PMC3478791 DOI: 10.3390/s120911435] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Revised: 07/12/2012] [Accepted: 08/15/2012] [Indexed: 11/16/2022]
Abstract
This paper presents the implementation of a smart environment that employs Ambient Intelligence technologies in order to augment a typical hospital room with smart features that assist both patients and medical staff. In this environment various wireless and wired sensor technologies have been integrated, allowing the patient to control the environment and interact with the hospital facilities, while a clinically oriented interface allows for vital sign monitoring. The developed applications are presented both from a patient's and a doctor's perspective, offering different services depending on the user's role. The results of the evaluation process illustrate the need for such a service, leading to important conclusions about the usefulness and crucial role of AmI in health care.
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Affiliation(s)
- Sokratis Kartakis
- Institute of Computer Science of the Foundation for Research and Technology—Hellas (FORTH), N. Plastira 100, Vassilika Vouton, GR-70013, Heraklion, Crete, Greece; E-Mails: (V.S.); (P.T.); (G.Z.)
- Authors to whom correspondence should be addressed; E-Mails: (S.K.); (C.S.); Tel.: +30-2810-391-741 (C.S.); Fax: +30-2810-391-799 (C.S.)
| | - Vangelis Sakkalis
- Institute of Computer Science of the Foundation for Research and Technology—Hellas (FORTH), N. Plastira 100, Vassilika Vouton, GR-70013, Heraklion, Crete, Greece; E-Mails: (V.S.); (P.T.); (G.Z.)
| | - Panagiotis Tourlakis
- Institute of Computer Science of the Foundation for Research and Technology—Hellas (FORTH), N. Plastira 100, Vassilika Vouton, GR-70013, Heraklion, Crete, Greece; E-Mails: (V.S.); (P.T.); (G.Z.)
| | - Georgios Zacharioudakis
- Institute of Computer Science of the Foundation for Research and Technology—Hellas (FORTH), N. Plastira 100, Vassilika Vouton, GR-70013, Heraklion, Crete, Greece; E-Mails: (V.S.); (P.T.); (G.Z.)
| | - Constantine Stephanidis
- Institute of Computer Science of the Foundation for Research and Technology—Hellas (FORTH), N. Plastira 100, Vassilika Vouton, GR-70013, Heraklion, Crete, Greece; E-Mails: (V.S.); (P.T.); (G.Z.)
- Department of Computer Science, University of Crete, P.O. 2208, Knossos Avenue, GR-71409, Heraklion, Crete, Greece
- Authors to whom correspondence should be addressed; E-Mails: (S.K.); (C.S.); Tel.: +30-2810-391-741 (C.S.); Fax: +30-2810-391-799 (C.S.)
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