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 Computer Systems Science & EngineeringDOI:10.32604/csse.2022.018800 Article

An Architecture Supporting Intelligent Mobile Healthcare Using Human-Computer Interaction HCI Principles

1College of Computer Science and Information Systems, Najran University, Najran, Saudi Arabia
2Faculty of Engineering & Technology, University of Sindh, Jamshoro, 78060, Pakistan
*Corresponding Author: Abdullah Alghamdi. Email: abdulresearch@hotmail.com
Received: 22 March 2021; Accepted: 12 May 2021

Abstract: Recent advancements in the Internet of Things IoT and cloud computing have paved the way for mobile Healthcare (mHealthcare) services. A patient within the hospital is monitored by several devices. Moreover, upon leaving the hospital, the patient can be remotely monitored whether directly using body wearable sensors or using a smartphone equipped with sensors to monitor different user-health parameters. This raises potential challenges for intelligent monitoring of patient’s health. In this paper, an improved architecture for smart mHealthcare is proposed that is supported by HCI design principles. The HCI also provides the support for the User-Centric Design (UCD) for smart mHealthcare models. Furthermore, the HCI along with IoTs (Internet of Things) 5-layered architecture has the potential of improving User Experience (UX) in mHealthcare design and help saving lives. The intelligent mHealthcare system is supported by the IoT sensing and communication layers and health care providers are supported by the application layer for the medical, behavioral, and health-related information. Health care providers and users are further supported by an intelligent layer performing critical situation assessment and performing a multi-modal communication using an intelligent assistant. The HCI design focuses on the ease-of-use, including user experience and safety, alarms, and error-resistant displays of the end-user, and improves user’s experience and user satisfaction.

Keywords: Human computer interaction; mhealthcare; user-centric design; sensor network; nternet-of-things

1  Introduction

Smart technologies are everywhere in the form of cloud computing, edge computing, distributed computing, mobile computing, and IoT (Internet of Things). These technologies paved the way for the advancement of healthcare devices [1]. The IoT is an environment of a variety of things, such as RFID tags, medical devices, mobile phones, etc. Such devices connect through unique identifiers and interact with each other [2,3]. IoT connected devices transfer data between each other, in turn leading to new derived data. Health care is one of the most important application areas of IoT. It provides opportunities for several medical applications, such as mobile and remote health monitoring. The integration of wearable devices and systems in IoT help providing better mhealth services. The significant and potential betterments resulting in improved healthcare interventions. Mobile health care or the mHealthcare devices and applications potentially give the advantage of recording and retrieving health-related information ranging from fitness levels and heart rates to medication dosages and sleep cycles. However, mHealthcare is essential for user and healthcare service providers. In critical cases, if the healthcare worker is away, the users can monitor their health conditions. On the other hand, the HCI is essential for mHealth devices, which in turn provides the interpretation of dissemination of health services and health data. The HCI supports the ease and efficient usage of these devices for both health care professionals (HCPs) and patients [35]. The HCI with good design is a key to provide smart mobile healthcare and mHealth environment, with long term health monitoring and tracking solutions. This HCI-based mHealth monitoring system lays down the rules for timely and quick response for emergency and the elderly patient care a the mHealth care centers [68]. The HCI perspective for smart mHealthcare system design reflects that the HCI along with IoT cloud-based mHealthcare environment is critical due to provision of usability and usefulness, as shown in Fig. 1. In addition, the design eschews the defects in the IoT devices. Within the mHealthcare, the environment determines the effectiveness of the system to detect the problems, identifies state-of-the-art solutions to the problem, and outlines priorities and resource allocation for the betterment of health results [9,10].

Therefore, we propose an HCI smart mHealthcare model that is principled to complement the user-centered design method and satisfaction of the end-user in order to provide a better user experience. This promotes the development of these devices with smoother integration in order to facilitate efficient connections among smart mHealthcare, devices, HCPs, and users [11].

Figure 1: Smart mHealthcare environment based on HCI and IoT [11]

The HCI issues, related to the design for usability from both the user side and healthcare providers, comprise several design challenges. Those design challenges might be the poor design of such devices, unawareness of the system, and compatibility of these devices. Smart mHealthcare design mitigates a poor usability barrier, which is considered as a major adoption for mHealthcare applications. However, the IoT devices’ compatibility plays an inevitable part in overall HCI design, in which users get sophisticated interaction with the system. Consequently, the HCI design specifically incorporates all required key points to address UCD (User Centric Design) application [11,12]. The UCD design encapsulates major benefits in a smart mHealthcare environment. It ensures the usability of the application and provides the necessary information in a complex environment. Both the user (patient) and healthcare service providers can get in touch on an immediate basis. The system can also support multiple users and provide their health-related information HCPs. This demands a realistic and wholesome efficiency of the system. Furthermore, the smart mHealthcare environment assures timely data delivery, good performance of the system. The robustness of the smart mHealthcare system leverages the potential benefits in the reduction of complexity in the HCI environment. The smart mHealthcare HCI design is based on the UCD mitigate the reliance and reluctance on limited healthcare infrastructure and speed up the health-seeking practice [13]. This is why good care and better health results become the ultimate goal of the overall healthcare environment. Therefore, a smart mHealthcare HCI design should fulfill the goal of a good user experience with a robust system for both the users (patients) and doctors. The HCPs can monitor and diagnose the patients that have chronic health conditions namely heart diseases, diabetes, obesity, and elderly patients. The HCPs can keep track of any important change in a monitored condition and communicate effectively and quickly with the patient [14].

The rest of the paper is organized as follows. Section I provides the introduction to the HCI and smart IoT systems. Section II describes the literature review with existing and current research. Section III incorporates the smart HCI mHealthcare architecture. Section IV explains the suggested model of HCI smart mHealthcare for medical devices. As a final point, a conclusion and future work is provided in Section V.

2  Literature Review

Traditionally, research about medical device design is mostly related to usability and ergonomics as these are important for approval from the regulatory bodies. These types of information communication and technological applications in medical science paved the way for more complicated devices, so HCI design stressed the interaction between computer systems and HCPs [1517]. Nowadays, smart technologies have led to a substantial change in employing and designing medical devices. From the smart technology perspective, the mHealthcare services have been transformed into personalized care delivery with the help of sensor technology, cloud computing, mobile computing, edge computing, big health data, social networks, mobile and wireless communication technology, and health apps [18,19].

A new healthcare model is, undoubtedly, imminent for service delivery, and centers on the users and smart healthcare services. The model with ten Ps for medicine defines the Personalized, Perspective, Predictive, Preventive, Precise, Participatory, Patient-Centric, Psycho-Cognitive, Post-Genomic, and Public [20]. Accordingly, it is necessary for both HCPs and patients or users that smart devices are the main component for the implementation of mHealthcare services and models. The study in Fanos [21] claims that the biggest IT and internet companies of the world are looking for prospective opportunities and domains for the investment into the medical field and healthcare services, based on expertise in IoT, AI (Artificial Intelligence), and cloud computing or mobile computing. Also, it is expected that the mHealthcare market will reach more than 63 Billion US\$ by the end of 2021. IoT-based mHealthcare devices and market adoption will further grow up to 410 Billion US dollars. The HCI provides the main support for data visualization, comprehension, UI control in the IoT mHealthcare domains [22]. In Solanas et al. [23,24] scholars emphasized that smart mHealthcare devices provide promising results and help ease in managing asthma, diabetes, loss of hearing, depression, poor sightedness, migraines, anemia, and osteoarthritis.

Smart healthcare systems and mobile devices can provide better and robust results unitedly in the areas of treatment, rehabilitation, diagnosis, and measures of prevention. Further, smart mHealthcare enhances the HCPs and patient's interactions. The interaction for the elderly or chronic diseases patients has been increased to a great extent with collaborative care, enhanced information of patients using data based on current conditions. This improves the system’s effectiveness in terms of usability and efficiency for HCPs and patients [25]. In Martínez-Pérez et al. [2628], the authors used mobile and wireless communication technology for the healthcare services for the low cost and improved service of healthcare with flexibility and efficiency. Remote advancements give more noteworthy adaptability and convenience contrasted with customary arrangements [29] and the capacity of savvy gadgets to share data all the more effectively gives the chance of far-off finding [3032]. HCI helps the new advancements to be promptly accessible, available, adaptable, and adequate [33]. In addition, it assists with guaranteeing that arrangements address client issues and convey viability and effectiveness [3437].

The studies in Webb et al. [38] suggest that smart healthcare services need the real-time processing, sharing, and utilization of precise data. Thanks to cloud computing and wireless communication technologies for providing seamless services and playing key roles in service delivery, sensor network, and people. They provide details of major applications of smart healthcare systems for patient monitoring, patient data analysis, and collection for smart and intelligent decision-making processes. Along With these services, telemedicine and personalized medical services provide smart and mobile healthcare services. In Fairbanks et al. [39], mobile WBAN (Wireless Body Area Networks) was used and claim efficient healthcare delivery and promise low-cost prevention and management of the patient-centered disease. Their research focuses upon the acceptance, usability, and effectiveness, and efficiency highly demands the HCI design considering the human characteristics depending on technological and social backgrounds. It, however, does not focus much on patient situation assessment and intelligent assistance. Moreover, it does not focus on improving the user experience and parameters affecting the adoption of the system by both the health care providers and end-users. This is an important factor for the low adoption rate of the current technologies [4043]. Thus, there is a need for intelligent mHealthcare innovation and user acceptability with multidisciplinary collaboration among HCPs, HCI, and health experts [44,45].

3  Smart mHealthcare based IoT Architecture

Smart mHealthcare is the combination of Information Technology (IT) and life sciences for the provision of better healthcare services and cost-effectiveness. Initially, IBM originated a strategy called Smart Planet with suggestions to embed sensors into a diversity of physical objects. These objects are connected and integrated through cloud computing [4653]. The main application of this technology is to facilitate HCPs, users/patients and establish e-Health records (electronic health records) for the intelligent monitoring and tracking of patients. This system helps to build a sustainable ubiquitous system for smart mHealthcare and will boost service delivery for better patient care. We suggest a design architecture with five layers for a smart mHealthcare environment one additional layer, which is the AI layer for situation assessment using predictive modeling and intelligent assistant, as shown in Fig. 2, with each layer depending on the subsequent layer. It enhances the four-layered architecture, as proposed in Liu et al. [11]. Other layers include the Application layer, Data Integration Layer, Communication Layer, and Sensing Layer.

Figure 2: Smart mHealthcare 5-Layer architecture

The 5-layered design for the smart mHealthcare environment chiefly advocates the mHealthcare scenario where the Application layer incorporates dashboards, a system for outbreak or epidemic systems, platforms for healthcare at regional level, personal health records, and smart monitoring and tracking system [54,55]. The application layer utilizes the websites, dashboards, IoT devices, and applications as shown in Tab. 1. The second layer is the AI layer, which performs patient situation assessment, which may involve integrating temporal events and communicating using multimodal dialog. The third layer is the data integration layer, which deals with resources for the medical data of patients and doctors or HCPs information, cloud computing platforms, distributed data storages, data fusion, information sharing, data processing, predictive modeling, data analysis with the help of IoT applications and devices. The fourth layer is the communication layer, which is responsible for all telecommunication services and access, fundamental IoT layer. Wireless networks and broadcasting networks use state-of-the-art technologies to provide telecommunication facilities, as shown in Tab. 1. The sensing layer utilizes sensor technologies along with wireless technologies for the purpose of gatheing the information from the vicinity [4,5658]. The sensors may include continuous monitoring sensors such as ECG, EEG, EMG sensors, gyroscopes, accelerometers, auditory, and visual sensors. Discrete-time data collection sensors are there such as blood pressure, blood oxygen saturation, humidity & temperature sensors, and glucose monitoring sensors. These sensors may use Bluetooth/ZigBee, RFID, or Ultrawide Band (UWB) wireless technologies to communicate with the network, as described in Tab. 1.

3.1 Application Layer

This layer is responsible for HCPs decision making and helps to communicate with the user/patient. Also, it helps in the evaluation and realization of e-records (electronic records) and smart mHealthcare requirements. Many types of health-related applications and keeping up-to-date e-records are maintained and monitored. Therefore, the security provider must be aligned with the utilization of precise and adequate information sharing among patients and HCPs. For accessing the specific information and medical resources, the application layer provides HCPs and patients with the ease and efficient links and connections of smart mHealth resources and service [59]. The application layer gives an access to services namely main spots of smart mHealthcare service to the patients and HCPs, management authorities and decision-makers, and institutional bodies. The decision-maker includes drug oversight bodies, Health Departments and national healthcare centers, public health departments. The institutional health bodies comprise hospitals, community clinics, regional health centers, and nursing homes [60].

3.2 AI Layer

The AI layer incorporates mechanisms for intelligent decision-making and assistance. This layer embodies situation assessment using predictive modeling, especially focusing on the recognition of chronicles, i.e., temporal events. The patient’s critical parameters, such as blood oxygen level can drop silently (silent hypoxia), without showing any external symptoms of shortness of breath or difficulty breathing. This layer is critical in terms of assessing patient situations, recognizing a course of action, and communicating with the both health care provider and the user. The communication can be multimodal in the form of an intelligent (virtual) assistant. This layer is supported by the data integration layer and will support the application layer.

3.3 Data Integration Layer

The Data Integration layer helps to accomplish data processing and data fusion. They are extremely basic but important requirements for the support of smart mHealthcare services. This layer utilizes service-oriented architecture, cloud computing technologies, and big data to build an e-inventory for health, where records are kept and shared with the corresponding personals. This augments the collected data with the data seeking from other smart systems. Overall, integrated data works to support the application layer platform.

3.4 Communication Layer

This layer facilitates both the patients and HCPs with communication services. The communication services along with body sensor networks, internet, and WiFi services combining with the optical fiber to provide very high-speed and reliable internet connectivity. Without communication service and infrastructure, the smart mHealthcare system are not viable. The communications networks provide huge capacity, robust internet facilities, and storage of huge amounts of data and sharing the information using internet hubs among the HCPs and patients [61]. The smart mHealthcare environment demands real-time, reliable, and secure data transmission. Thus, telecommunication infrastructure must be well designed and robust to meet the smart mHealthcare needs.

3.5 Sensing Layer

It is the most important and fundamental layer of the architecture, so it performs the most important task, which is the collection of health-related information from the patient, whether in the hospitals, in the elderly care centers, or at home. This layer is at the core of IoT technology and is supported by biotechnology. This layer, using a wearable sensor network, helps in gathering the data related to the patient health. The various health parameters can be monitored, such as patient blood pressure, blood oxygen saturation, temperature, blood sugar level, ECG, electroencephalograph (EEG), electromyography (EMG), heart-beat monitoring, and visual monitoring. The underlying technology of data transmission depends on the required power consumption, ranging from Bluetooth/ZigBee to ultra-wideband (UWB) wifi communication. The main communication layer receives this data and can directly transmit it to HCPs (using some application to monitor) via the internet or store at a cloud platform (data integration level) [62].

4  HCI and Smart mHealth Design for Devices

The HCI design needs to incorporate the ease of use, including user experience and safety, patient and HCPs relationship, legacy support, distinguish end-user, alarms and error resistant displays, timely responses, personalization, and privacy, as illustrated in Fig. 3. The design must ensure the satisfaction of the user and the reliability of the device for the accomplishment of the task. Because every individual user may have a different task to perform, the HCI design of the device must meet the requirement in terms of different user roles, workflows, system functions and dynamic environments, reception storage, real-time information transmission, and data availability.

Safety is the foremost consideration in the design principle for the HCI smart mHealthcare system because usability must ensure reliability, satisfaction, effectiveness, efficiency, and secure information utilization as well as accessing. The heuristic evaluation principles must be incorporated [63]. In the case of medical data and devices, the heuristic evaluation may create conflict with ease of use with the safety of the device, as shown in Fig. 3. However, the ease of use motivates us to diminish the cognitive load by use of cues to perform well or even automatically, which needs a very cautious task check. This automatic response is also known as muscle memory and response chaining. Therefore, this type of behavior is undesirable for safety and critical to medical devices.

Figure 3: HCI Smart mHealth model for devices

The manufacturer of the device and the device user expect or intend the errors and omissions in the result of the device. Therefore, errors can occur if safe usability is violated. The usability errors are related to HCI design and UI design. If we take an example of the error in the visual display of UI in the devices installed by the FDA (Food and Drug Administration) Department of US, where, the software was poorly designed that made the doctors confused to visualize the right and left hemispheres of the patients brain resulting in wrong side surgery of the brain. Therefore, false alarms play their part number one hazards of health technology [6468]. The false alarms interrupt doctors amid the critical tasks. The false alarms not distract the doctors and make them fatigue but also create noise which increases stress on HCPs and the patients [6973]. So the HCI designer can design a better user interface and help in preventing and reducing usability errors. The prevention of the errors can be achieved by an iterative usability test, as indicated in Tab. 2. This also helps for analyzing contextual risk during the actual use.

The simulation of the user environment or prototyping helps to predict the possible usability errors and interaction scenario of the user to a device to explore anomalous conditions, as shown in Fig. 3 and indicated in Tab. 2. The alert system is beneficial in the form of both sound and visual or both. This behavior is critical when the battery level is low. However, the HCI designer incorporates the measures to remind the user of the low state of the battery and to prevent the disabling of such alarms. The user and HCPs relationships demand a considerable insight into the device design. The user experience has a big impact on the devices design and UI. Hence, the designer acknowledges all the needs of the user and HCPs. The mHealthcare design method and steps should support the relationship of the HCPs and end users. The HCPs are the first and foremost group that utilizes the mHealthcare devices and gains experience, as shown in Fig. 3. The HCPs having prior knowledge of usability and design information architecture might perform well with the device, as described in Tab. 2. However, HCPs at different levels of training and expertise might require different UIs within the same device. The application supports the end-user requirements and feasible design in terms of HCI mHealthcare UI. Under the circumstances, the end-user can recognize the design and buttons and easily comprehend information at the time of rapid response.

HCPs must be ensured in a warning and possess control regarding the conditions and changes in in-patient data. However, HCPs and end-users fully comprehend and identify the design specifications as described in Tab. 2.

Nevertheless, the smart HCI mHealthcare design, specifying the needs and strategies of different User-centric designs, include the end-user distinguishing requirements, in which HCI designers resolve conflicts arising between the HCPs and UCD or end-user usability. The usability and feasibility of the HCI smart design must meet the needs of the stakeholders, as described in Tab. 2. The end-user must not be mistaken with the customers. The end-user might not have the knowledge or technical education about the device and design or oftentimes are not the ones who buy such medical devices. The HCI smart designer incorporates the knowledge of the environment where the device will be used and who the users are, as shown in Fig. 3. The usability with robust results and good HCI UIs is not enough; mHealthcare devices must be durable and sustain long-term stability. This provides legacy support and long life to medical devices, as shown in Fig. 3. The design solution production, related to workflow, task, and content of the information architecture, results in optimized and smart HCI architecture. This result is the outcome of the previous phases of the iterative design. HCI smart mHealthcare plan includes the analysis and observations of the user environment and device. This manages the user activities and history, as described in Tab. 2. The medical devices life cycle is long and its adoption is slow.

The HCI smart mHealthcare designer leverage previous workflows and legacy structures from user history and integration with the new environment. This helps with the understanding of the users perspective of usability and design interface. Furthermore, this information optimizes the design and reduces the users error as, shown in Fig. 3. The systematic plan of UCD, based on the history of the user, optimizes the mental models and re-usability of the systems according to the users satisfaction level, as described in Tab. 2. It supports the stable transition of new medical devices and the usability of new smart mHealthcare devices.

Time is precious and invaluable when dealing with life and health care provisions. The timely response and concurrency should be ensured at each layer and phase. In real-time data realization, the sensor layer must diminish the latency level in both availability and being measured value. Then, the communication layer plays an important role in dealing with real-time data constraints in emergency rooms or emergencies. After the communication layer, the data integration layer should provide transparency and precision in aggregation and relevancy of specific information from different sources, as shown in Figs. 2 and 3. The timestamps and data frequency indicators might be used to indicate to the user and HCPs about the timeliness and concurrency constraints at the application layer level, as shown in Tab. 2.

In HCI smart mHealthcare design, privacy and personalization are the main needs that should be taken into great consideration. The smart mHealthcare device intelligently recognizes and saves the users characteristics, preferences, and habitual activities. However, the device may personalize and customize the UI according to saved information, knowledge, preferences, and capabilities of the user. The HCI smart mHealthcare designer can develop better HCI design through the consideration of all provided human factors. It provides better UX (user experience) and better UI.

5  Conclusion

In this paper, an architecture for intelligent mHealthcare is proposed which uses HCI (Human-Computer Interaction) based design principles to enhance the usefulness and usability of the devices and help improve experience of both the HCPs and the patients. These design principles allow the support for the User-Centric Design (UCD) for smart mHealthcare models. The proposed architecture enhances the 4-layered architecture proposed in the literature and provides an improved intelligent patient health monitoring system, which has become more critical in remote health care. The 5-layered model comprises the additional AI layer for intelligent patient situation assessment and multi-modal communication with the application layer, data integration layer, communication layer, and sensing layer. The success of the intelligent mHealthcare requires HCI design principles focusing upon the ease-of-use (including user experience) and safety, alarms, and error resistant displays of the end-user. User and HCPs relationship and personalization are incorporated along with integration with legacy workflows and security. Also, the design of intelligent virtual assistants for communicating critical patient care is crucial. Moreover, an important factor is improving the overall user experience, for both the patient and HCPs. The intelligent mHealthcare system with an actuation layer, that can administer remote care (injecting the drug, providing CPR, even surgeries), will be more convenient and smart, but it remains as future work since it requires more confidence in these technologie. In addition, it will also need more HCI based smart methodology development.

Funding Statement: The authors express their gratitude to the ministry of education and the Deanship of Scientific Research of Najran University, Kingdom of Saudi Arabia, for financial and technical support under code number NU/ESCI/17/107.

Conflicts of Interest: The authors declare that they have no conflicts of interest to report regarding the present study.

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