Adopting Integrated Health Information Systems in Intensive Care
Units
Christina-Athanasia Alexandropoulou
a
, Ilias Panagiotopoulos
b
and George Dimitrakopoulos
c
Department of Informatics and Telematics, Harokopio University, Athens, Greece
Keywords: Criticalities, Integrated Health Monitoring, Health Information Technology, Intensive Care Units.
Abstract: Although today’s advanced biomedical technology provides unsurpassed power in diagnosis, monitoring, and
treatment, interpretation of vast streams of information generated by this technology often poses excessive
demands on the cognitive skills of health-care personnel (nurses, doctors, etc). In addition, storage, reduction,
retrieval, processing, and presentation of information are significant challenges. These problems are most
severe in critical care environments such as Intensive Care Units (ICUs) where many events are life-
threatening and thus require immediate attention and the implementation of definitive corrective actions. As
such, the modern ICU environment provides fertile soil for the development of more accurate predictive
models, better decision support tools, and greater personalization of care. In this respect, the use of Health
Information Technology (HIT) and clinical informatics can rapidly analyse many variables to predict
outcomes of interest and face heavy uncertainties whose solution may require computing intensive tasks.
Therefore, the development of HIT-enabled specific applications or services to alleviate common information
management problems encountered in ICU environments is of fundamental importance. This paper discusses
the mixed-criticality characteristics of HIT-based systems in ICU environments, as a first requirement to
effectively manage them. To do so, the present study describes one principal use case, namely the Integrated
Intensive Care Clinical Information System (I-ICCIS), which stems from the combination of health
information technologies with classic health care practices in ICU environments. The main criticalities
anticipated in such a system are described, whereas open areas for future research activities are also identified.
1 INTRODUCTION
There is a broad consensus that health care in the 21st
century will require the intensive use of Health
Information Technology (HIT) and clinical
informatics to acquire and manage data, transform the
data to actionable information, and then disseminate
this information so that it can be effectively used by
the health-care personnel to improve patients’ care
(Gulavani and Kulkarni, 2010; Qi et al., 2017). Such
technology trends aim to help doctors and nurses to
keep up with the rapidly changing state of medical
knowledge, as well as to understand what these
changes mean for the treatment of specific patients.
In this respect, data from patient monitors and
medical devices, although available visually at the
bedside, is challenging to acquire and store in digital
a
https://orcid.org/0000-0001-5233-0579
b
https://orcid.org/0000-0003-4366-6470
c
https://orcid.org/0000-0002-7424-8557
format. There is limited medical device
interoperability and integration with the electronic
medical record (EMR) remains incomplete at best and
cumbersome. Moreover, standard analytical
approaches provide little insight into a patient’s actual
pathophysiologic state (Islam et al., 2015).
Understanding the dynamics of critical illness
requires precisely time-stamped physiologic data
integrated with clinical context and processed with a
wide array of linear and nonlinear analytical tools.
This is well beyond the capability of typical
commercial monitoring systems. Such an
understanding derived from advanced data analytics
can aid health-care personnel in making timely and
informed decisions and improving patient outcomes
(Mieronkoski et al., 2017).
Alexandropoulou, C., Panagiotopoulos, I. and Dimitrakopoulos, G.
Adopting Integrated Health Information Systems in Intensive Care Units.
DOI: 10.5220/0009325302190225
In Proceedings of the 6th International Conference on Information and Communication Technologies for Ageing Well and e-Health (ICT4AWE 2020), pages 219-225
ISBN: 978-989-758-420-6
Copyright
c
2020 by SCITEPRESS Science and Technology Publications, Lda. All rights reserved
219
The above problems are most severe in Intensive
Care Units (ICUs), which are hectic, chaotic, and
stressful work environments. Clinicians need to be up
to date on patient status at all times, coordinate and
follow plans for each patient, and closely
communicate critical information (Jacobs et al.,
2015). They need to continually observe, obtain, and
evaluate a vast array of information and collaborate
within a multidisciplinary team. They are required to
make diffιcult decisions about critically ill patients
under the pressure of time. Since team members
change with every shift, information can be lost in
multiple handovers. In addition, quick patient
turnover adds to the list of new issues that need to be
resolved on a daily or hourly basis. The combined
high cognitive workload and limited number of staff
available at any given time leads to an overall
decrease in situational awareness (Kurahashi et al.,
2016).
Furthermore, critical care involves highly
complex decision making. It is by nature data-intense.
Large volumes of data are collected from disparate
sources and reviewed usually retrospectively; and
even that is difficulty. Health care providers must
navigate through a jungle of monitors, screens,
software applications, and often paper charts that
provide supplemental patient data inherent in today’s
cacophony of information management systems (De
Georgia M. et al, 2015). In addition the amount of
information in critical care environments can be
overwhelming and difficult to process (Lighthall et
al., 2015). Accessing and integrating the required data
for decision-making can be time-consuming and
made difιcult by multiple logins, the need to use
different computers for certain tasks, or the
information sources being occupied or otherwise
unavailable. Furthermore, depending on local
resources and structure of an ICU, a large amount of
crucial information is still documented on paper by
multiple team members, often redundantly. This can
lead to missing or misplaced charts and a delay inflow
of information (James et al., 2018).
With the vision to build on the aforementioned
statements, modern ICU environments provide fertile
soil for the development of HIT-based systems, in
introducing data management supported tools and
greater personalization of care. In this manner, HIT-
based systems are expected to introduce many
benefits to the operation of ICUs; decrease of hospital
death, decrease of length of stay, decrease of cost and
increase of care quality (Heidari et al., 2013). In
addition, the complex information and
communication technology involved in HIT-based
systems may also include mission-critical
components (Ciccozzi et al., 2017). Identifying the
criticalities of the specific components, applications
or services in complex HIT-based systems is of
significant importance for their effective
implementation in ICU environments.
In the light of the above, digital management
systems and remote monitoring are on the corner,
aiming to prevent dangerous events and improve
patients’ outcome, considering high incidence of
adverse events, medical errors and shortage of
specialist nurse numbers in ICU. In that framework,
the present study aims to identify and model
criticalities of HIT-based systems in ICU, as a first
step to effectively manage them in system
implementation and deployment. Furthermore, one
principal use case that stems from the combination of
health information technologies with classic health
care practices in ICU is explored, by identifying and
explaining the mixed-criticality characteristics of the
associated system. In this respect, the present paper
proposes a hybrid data clinic management
framework, namely ‘I-ICCIS’ (Integrated Intensive
Care Clinical Information System) to pave the way
towards incorporating critical care informatics in
dynamically monitoring the patient’s status in ICU.
Such a framework aims to include acquisition,
synchronization, integration, and storage of all
relevant patient data generated from stand-alone
devices and disparate sources, that do not easily
integrate with one another, into a central information
platform, to extract clinically relevant features and
translate them into actionable information, parallel
with the assistance of health-care personnel.
The structure of this paper is as follows. Section 2
presents the background for this work, whereas health
information systems and technical challenges are
briefly discussed in section 3. ‘I-ICCIS’ framework
and its main criticalities are identified in section 4,
whereas concluding remarks and perspectives for
future work are drawn in section 5.
2 RELATED WORK AND
BACKGROUND
Healthcare is becoming one of the most attractive
applications fields, where the Information and
Communication Technologies (ICTs) can offer
improved access to care, increased quality and
efficiency and reduced costs. Such systems comprise
medical sensors, wireless networks and software
applications for patient and remote healthcare
monitoring.
ICT4AWE 2020 - 6th International Conference on Information and Communication Technologies for Ageing Well and e-Health
220
In that framework, Milenkovic et al. (2006)
described the Terva monitoring system, which had
been introduced to collect data related to health
condition like blood pressure, temperature, sleep
conditions, weight, etc., over quite a long time. The
whole system has been housed in a suitcase that
includes a laptop, blood pressure monitor and several
other monitoring devices. Moreover, Shahriyar et al.
(2009) presented the Intelligent Mobile Health
Monitoring System (IMHMS), which provides
medical feedback to the patients through mobile
devices, based on the biomedical and environmental
data collected by deployed sensors. In addition, Lin et
al. (2018) developed a smart clothingbased
intelligent health monitoring system, which was used
for electrocardiography (ECG) signal collection and
heart rate monitoring, including eight kinds of
services, such as surveillance of signs of life, tracking
of physiological functions, monitoring of the activity
field, anti-lost, fall detection, emergency call for help,
device wearing detection, and device low battery
warning. Moreover, Watson for Oncology (IBM,
2016) assesses information from a patient’s medical
record and displays potential cancer treatment options
by combining the latest data of the international
bibliography with the analytical speed of IBM
Watson, in order to improve patient outcome.
Additionally, in the recent study of Lee et al.
(2019), an efficient, robust, and customizable
information extraction and pre-processing pipeline
for electronic health records has been addressed by
organizing data into a structured, machine-readable
format which can be effectively applied in clinical
research studies to optimize processes, personalize
care, and improve quality, and outcomes. Moreover,
Hammed and Owis (2015) have designed and
developed a real-time Integrated Health Monitoring
(IHM) system including biological sensors,
integrated networking, electronic patient records, and
web technology to allow remote monitoring of patient
status. This system aims to process, monitor and store
the vital signs of the patients starting from home until
reaching the hospital.
Following the above works, it should be stated
that storage, reduction, retrieval, processing, and
presentation of patient information are significant
challenges. These problems are most severe in critical
care environments such as Intensive Care Units
(ICUs) where many events are life-threatening and
thus require immediate attention and the
implementation of definitive corrective actions. A
review of the relevant literature reveals the ongoing
and increased interest in the HIT-based systems and
solutions for ICUs. In this manner, Hayes-Roth B. et
al (1992) presented the function of Guardian, an
intelligent system for intensive care monitoring.
Guardian’s system interprets perceived information
from the environment, performs all knowledge-based
reasoning and problem solving (e.g. problem
detection, diagnosis, prediction, planning, and
explanation) and decides what actions to perform. It
also constructs and modifies dynamic global control
plans to coordinate its perception, reasoning, and
action. Furthermore, Kaur and Shimi (2016) proposed
an intelligent patient monitoring system for ICUs
being able to acquire, store and present data to
medical staff. This system is able to independently
operate and it can replace, in some cases, the medical
staff in nursing centers. Besides, it provides a good
environment for the patients by offering an efficient
monitoring and the adequate treatment.
Prajapati et. al. (2017) are proposing an intelligent
real time IoT-based system for monitoring ICU
patients (IRTBS), which can help to fast
communication and identifying emergency and
initiate communication with healthcare staff and also
helps to initiate proactive and quick treatment.
Moreover, Flohr et. al. (2018) designed an intelligent
monitoring and communication system, namely
VitalPad, to improve patient safety in an pediatric
ICU. This system supports the clinical decision-
making via smart alerts, cumulative risks scores and
context-sensitive icons based on the assessment of
vital signs and other monitoring data, drug infusion
information, clinical checklists, and/or response to
application messages. In a more recent study,
Davoudi et. al. (2019) examined the feasibility of
using pervasive sensing technology and artificial
intelligence for autonomous and granular monitoring
in ICU. They used wearable sensors, light and sound
sensors, and a camera to collect data on patients and
their environment.
3 HEALTH INFORMATION
SYSTEMS AND TECHNICAL
CHALLENGES
The medical field is closely related to human life, and
a wrong decision is intolerable. With the intensive use
of health information technology and clinical
informatics, HIT-based systems tend to act more
intelligent and autonomously with their operation
based mainly on the computer’s and technological
equipment’s integrity. The key features that HIT-
based systems should have in general are the follow
(Osmon et al., 2004; Kotronis et al., 2017):
Adopting Integrated Health Information Systems in Intensive Care Units
221
Accurate, comprehensive and complete data
collection, which include accurate and timely
recording of patients’ status and clinical events.
Interfaces with other systems that will enhance
the reception and exchange of information.
Ability to perform fast and complex queries in
order to retrieve the information that is
required.
Availability of information for a wide range of
clinical and administrative purposes.
The medical history, which will be stored in the
clinical information system, should be clearly
identifiable, interpretable and provide only the
necessary information without unnecessary
details.
At every episode of care and every patient's
file, HIT-based systems should allow the
performing of retrospective checks on access
and processing and should be easily adapted to
user requirements wherever is possible.
In this manner, a clinical information system
relies on the accuracy of the data entered into it.
Therefore, it is important the quality control
measurements to be able to ensure the accuracy of the
data retrieved. In addition, it is not uncommon for the
health-care personnel to enter or extract data from the
chart that are referring to an incorrect patient, which
can lead to severe processing errors. In addition, the
successful integration with other information (digital
examinations from other laboratories), as well as the
medical equipment around the patient's bed, and
generally, within the unit, is highly desirable. For this
reason, it is necessary the existence of strict technical
standards, which will allow the necessary
communication infrastructure, facilitating the access
to vital information produced by all systems (Gambo
et al., 2011).
The malfunctions or computer viruses, the
system’s incompatibility, as well as the technical
damage to the equipment that make up the clinical
information system can lead to the destruction of
some databases included in the system. Therefore, the
backup of these systems, the use of secondary power
sources in emergencies and computer antivirus
programs are key ways that can prevent the
catastrophic loss of information included in the
clinical information systems (Sellars and Easay,
2008). Some examples of technical challenges can be
categorized to the following aspects:
The ability to handle the enormous amount of
data produced by recording even a minimal
amount of data per patient.
The need to ensure that all personal information
is kept in a secure environment. They should be
covered by legislation stipulating how
electronic information will be retrieved,
transmitted, and stored.
The need to provide systems that support the
availability of data.
User-friendly interfaces that can cover the
requirements for functionality and
performance.
The need for communication methods between
the central clinical information system and
local peripheral systems through the ability to
exchange secure messages.
The existence of a high quality clinical
information system, which will be flexible and
will ensure that the right data are available only
to the right people.
There are also issues regarding ownership and
management of data, who and how to handle the
information, such as anonymity in investigations,
who will have authorized access to the information
and for how long, and in what ways will have access.
In particular, only the treating clinicians would still
have to know to whom the data refers in order to act
on it.
Furthermore, the majority of HIT-based systems
have been designed to diagnose individually, but it is
difficult to exhaust human diseases by the rules. So,
the involvement of doctors and health care personnel
is required. Integrating doctors’ clinical diagnostic
process into a medical electronic health information
system (e-HIS) with powerful storage, searching, and
reasoning capabilities is expected to make a better
and faster diagnosis, as depicted in Figure 1. In this
direction, due to the fact that vast streams of data are
generated for patients which reflect dynamic and
complex physiology, data integration should be
managed in the appropriate clinical context. Most of
these parameters, however, are generated from stand-
alone devices that do not easily integrate with one
another. Some connect directly into the bedside
monitor but many others do not (or do so
incompletely meaning that not all the data is captured
electronically). A lack of functional medical device
interoperability is one of the most significant
limitations in health care today.
4 I-ICCIS FRAMEWORK AND
ITS MAIN CRITICALITIES
As mentioned previously, most care medical devices
are not designed to interoperate, and therefore there is
no universally adopted standard that facilitates
ICT4AWE 2020 - 6th International Conference on Information and Communication Technologies for Ageing Well and e-Health
222
Figure 1: Integrating clinical diagnostic process into a
medical electronic health information system (e-HIS).
multimodal data acquisition and synchronization in a
clinical setting. In this direction, a central clinical
information system that provides comprehensive,
cross-manufacturer medical device integration for the
care of a single critically ill patient at the bedside of
an ICU is not available.
In the context of the present work, an Integrated
Intensive Care Clinical Information System, namely
‘I-ICCIS’, is proposed which enables the health-care
personnel (doctors, nurses, etc) to monitor the health
status of all the patients in an ICU for further
assessment and recommendations. Medical
information from the patients, e.g., stemming from
embedded sensors and digital vital signs, is
electronically transmitted via a secure channel to
clinical monitoring center of ‘I-ICCIS’. In addition,
critical information towards the examination results
from other laboratories should also be embedded in
digital form. As such, ‘I-ICCIS’ can be used for
monitoring physiological signs and health parameters
of the ICU patients in real-time. The health-care
personnel should be alerted if there is a cause for
concern, e.g., inferred symptoms of a health problem
which requires immediate medical attention.
Based o the above, I-ICCIS’ architecture is
composed of three (3) subsystems:
Patients’ clinical data monitoring center
(medical information from the patients is
introduced based on various sources to enhance
the interoperability),
Data repository (medical data is stored and
processed),
Patients’ health record (hand-made clinical
data, demographic information, clinical history
data).
Figure 2: I-ICCIS subsystems, components and criticalities.
Figure 2 illustrates ‘I-ICCIS’ as a mixed-
criticality system with its three subsystems in
conjunction with its criticalities. In the following, we
discuss the identified criticalities grouped related to
each discrete subsystem.
1st Subsystem Patients’ Clinical Monitoring
Data Center. It is characterized as safety-critical
subsystem with a high significance in the ‘I-ICCIS’,
due to the fact that the operation and visualization of
the patients clinical data in real-time to the health-
care personnel is of fundamental importance. The
received bio-signals and examinations from medical
laboratories outside the ICU must be presented in
textual or graphical waveforms for visualization and
diagnosis purposes. In addition, it is critical for the
system to support multiple different platforms for the
data visualization. Accuracy, time and power
consumption regarding the real-time clinical status of
patients in the ICU are safety-critical parameters with
a very high significance.
2nd Subsystem Patients’ Health Record. It is
characterized as safety-critical subsystem with a high
significance in the ‘I-ICCIS’. First, the accuracy and
time regarding the patient’s medical record are safety-
critical parameters with a very high significance as it
holds all patients sensitive medical data, demographic
information and clinical history data. Secondly, the
operation (power consumption) of the patients’ hand-
made clinical data to the patients’ medical record is
very important. In practice this subsystem involves
similar criticalities as in the clinical monitoring center
section.
3rd Subsystem Data Repository. The challenge in
this subsystem is the management of medical data. It
is critical to protect patients sensitive medical data,
from the clinical monitoring data center and patients’
Adopting Integrated Health Information Systems in Intensive Care Units
223
health record to the data repository and then to ‘I-
ICCIS’. Data/service reliability, data availability,
privacy and flexibility regarding the data repository
of the presented health-care information system in the
ICU are critical parameters with a very high
significance.
‘I-ICCIS’ as a Whole Clinical Information
Framework. In general, the ‘I-ICCIS’ inherits the
criticalities of its subsystems (clinical monitoring
data center, data repository, patients’ health record).
In this section, we expand on the criticalities of the ‘I-
ICCIS’ as an integrated system (Kotronis et. al.,
2017).
First, the real-time monitoring process is safety-
critical. The ‘I-ICCIS’ has functions that must react
in real-time and provide time predictable
communication among different devices. A failure to
perform an operation within a given time may result
in serious harm. The significance of the real-time
monitoring is very high.
Secondly, the fault isolation is also a safety-
critical parameter. Faults in an application / device
must not propagate to other. Any fault must be
handled by the failing application itself or by the
system, while cascading failure effects should be
highly improbable. In addition, the real-time behavior
of an application must be correct, independently of
the execution of other applications. Moreover, due to
high significance of the data, the traffic leaving the
devices must be encrypted, while ensuring their
integrity. It is critical to avoid errors or intentional
modification to the data being transmitted. In order to
meet this criticality, well-known network security
protocols and software suites can be employed.
The ‘I-ICCIS’ framework must provide fault
information to the devices, applications (lost data)
and system. As such, fault information occurring at
the lower levels is a safety-critical parameter for
taking corrective actions. Moreover, another highly
significant safety-critical parameter is the systems’
interconnection. All the devices (e.g., sensors, digital
vital signs, digital results from laboratory
examinations) must interact and cooperate. In
addition, ‘I-ICCIS’ management framework should
be developed while taking into account health care
certificability for higher applicability in the ICU
domain. Finally, data should have a robust and
extendable standard format to be readable more or
less indefinitely.
5 CONCLUSIONS
Recent trends in the world of HIT-based systems and
clinical informatics to acquire and manage data,
transform the data to actionable information, and then
disseminate this information so that it can be
effectively used to improve patient care, have paved
the way for innovative healthcare services and
applications. Those services and applications are
most severe in critical care environments such as
Intensive Care Units (ICUs) where many events are
life-threatening and thus require immediate attention
and the implementation of definitive corrective
actions. Therefore, managing the criticalities of
specific subsystems and components in such
environments is of fundamental importance.
In this respect, this paper aims to identify
technical challenges towards HIT-based systems, as a
first step to effectively manage them in system
implementation and deployment. In addition, the
present study proposes a hybrid data clinic
management framework, namely ‘I-ICCIS’
(Integrated Intensive Care Clinical Information
System) to pave the way towards incorporating
critical care informatics in dynamically monitoring
the patient’s state in ICU. Such a framework
integrates all relevant patient data generated from
stand-alone devices and disparate sources that do not
easily integrate with one another, into a central
information platform, to extract clinically relevant
features and translate them into actionable clinical
information. Fundamental aspects on the mixed-
criticality characteristics of ‘I-ICCIS’ are presented in
detail.
Last, this work opens the gates to a series of
exciting work areas. First, a generic HIT-based
architecture for supporting mixed-criticality
healthcare systems in ICUs shall be specified.
Second, a set of requirements regarding ICU
environment can be further extended. Third,
interoperation and communication issues among
different sources and devices shall be explored due to
their crucial importance within the context of ICUs.
Fourth, additional novel healthcare oriented
applications for ICUs can be investigated, through the
proposed approach. Moreover, AI-enabled solutions
should be implemented in the presented integrated
intensive care clinical data management system for
making life-critical decisions and predicting adverse
outcomes before they happen, better manage highly
complex situations, and ultimately allow clinicians to
spend less time analyzing data and more time
harnessing their experience and human touch in
delivering care. Finally, what could also be
ICT4AWE 2020 - 6th International Conference on Information and Communication Technologies for Ageing Well and e-Health
224
investigated is to understand aspects that are likely to
maximize health-care personnel (nurses, doctors, etc)
adoption of intelligent integrated HIT-based systems
in ICUs.
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