Well, we work in the next era of software development, not only designing applications, but also developing systems that communicate with each other, thus participating in a workflow.
Automating this workflow through the seamless integration of these apps is a task that challenges many of the industries that we work in.
Automated Workflow Environments are those systems where multiple systems contribute and communicate to enable a network of these apps to actually solve complex problems very efficiently, with no human interaction. You can call them Digital Ecosystems.
You can construct workflow nets to describe the complex problems that these systems efficiently solve. Workflow nets, a subclass of Petri nets, are known as attractive models for analyzing complex business processes. Because of their good theoretical foundation, Petri nets have been used successfully to model and analyze processes from many domains, like for example, software and business processes. A Petri net is a directed graph with two kinds of nodes – places and transitions – where arcs connect ‘a place’ to ‘a transition’ or a transition to a place. Each place can contain zero, one or more tokens. The state of a Petri net is determined by the distribution of tokens over places. A transition can fire if each of its inputs contains tokens. If the transition fires, i.e. it executes, it takes one token from each input place and puts it on each output place.
In a hospital environment, for example, the processes involved, show a complex and dynamic behavior, which is difficult to control. The workflow net which models such a complex process provides a good insight into it, and due to its formal representation, offers techniques for improved control.
Workflows are case oriented, which means that each activity executed in the workflow corresponds to a case. In a hospital domain, a case corresponds with a patient and an activity corresponds with a medical activity. The process definition of a workflow assumes that a partial order or sequence exists between activities, which establish which activities have to be executed in what order. Referring to the Petri net formalism, workflow activities are modeled as transitions and the causal dependencies between activities are modeled as places and arcs. The routing in a workflow assumes four kind of routing constructs: sequential, parallel, conditional and iterative routing. These constructs basically define the route taken by ‘tokens’ in this workflow.
Well, enough theory, how does this apply?
Think of this in practical terms using the example of a EMR* or CPR* System or HIS* System:
• A patient arrives at a hospital for a consultation or particular set of exams or procedures.
• The patient is registered, if new to the hospital. A visit or encounter record is created in the Patient Chart (EMR) – with vitals, allergies, current meds and insurance details.
• The physician examines the patient and orders labs, diagnostic exams or prescription medications for the patient possibly using a handheld CPOE*
• The patient is scheduled for the exams in the RIS – radiology info system or LIS – laboratory info system or HIS (hospital info system)
• The RIS or LIS or HIS sends notifications to the Radiology and/or Cardiology and/or Lab or other Departments in the hospital through HL7 messages for the various workflows.
• The various systems in these departments will then send HL7 or DICOM or proprietary messages to get the devices or modalities, updated with the patient data (prior history, etc.)
• The patient is then taken around by the nurses to the required modalities in the exam/LAB areas to perform the required activities.
• The patient finishes the hospital activities while the diagnosis continues and the entire data gathered is coalesced and stored in rich structured report or multimedia formats in the various repositories – resulting in a summary patient encounter/visit record in the Electronic Patient Record in the EMR database.
• There could also be other workflows triggered – pharmacy, billing,.
• The above is just the scenario for an OUTPATIENT, there are other workflows for INPATIENT – ED/ICU/other patients.
The key problems in this ‘Automated Workflow Environment’ are:
• Accurate Patient Identification and Portability to ensure that the Patient Identity is unique across multiple systems/departments and maybe hospitals. The Patient Identity key is also essential to Integrating Patient healthcare across clinics, hospitals, regions(RHIO) and states.
• Support for Barcode/RFID on Patient Wrist Bands, Prescriptions/Medications, Billing (using MRN, Account Number, Order Number,Visit Number), etc to enable automation and quick and secure processing.
• Quick Patient data retrieval and support for parallel transactions
• Audits and Logs for tracking access to this system
• Support for PACS, Emergency care, Chronic care (ICU / PACU), Long Term care, Periodic visits, point of care charting, meds administration, vital signs data acquisition, alarm notification, surveillance for patient monitors, smart IV pumps, ventilators and other care areas – treatment by specialists in off-site clinics, etc.
• Support for Care Plans, Order sets and Templates, results’ tracking and related transactions.
• Quick vital sign results and diagnostic reporting
• Effective display of specialty content – diagnostic/research images, structured “rich” multimedia reports.
• Secure and efficient access to this data from the internet
• Removal of paper documentation and effective transcription
• SSO-Single Sign On, Security roles and Ease of use for the various stakeholders – here, the patient, the RN, physician, specialist, IT support etc.
• Seamless integration with current workflows and support for updates to hospital procedures
• Modular deployment of new systems and processes – long term roadmap and strategies to prevent costly upgrades or vendor changes.
• HIPAA, JCAHO and Legal compliance – which has an entire set of guidelines – privacy, security being the chief one.
• Efficient standardized communication between the different systems either via “standard” HL7 or DICOM or CCOW or proprietary.
• Support for a High speed Fiber network system for high resolution image processing systems like MRI, X-Ray, CT-SCAN, etc.
• A high speed independent network for real time patient monitoring systems and devices
• Guaranteed timely Data storage and recovery with at least 99.9999% visible uptime
• Original Patient data available for at least 7 years and compliance with FDA rules.
• Disaster recovery compliance and responsive Performance under peak conditions.
• Optimized data storage ensuring low hardware costs
• Plug ‘n’ Play of new systems and medical devices into the network, wireless communication among vital signs devices and servers, etc.
• Location tracking of patients and devices (RFID based) and Bed Tracking in the hospital
• Centralized viewing of the entire set of Patient data – either by a patient or his/her physician
• Multi-lingual user interface possibilities (in future?)
• Correction of erroneous data and merging of Patient records.
• Restructuring existing hospital workflows and processes so that this entire automated workflow environment works with a definite ROI and within a definite time period!
• Integration with billing, insurance and other financial systems related to the care charges.
• Future proof and support for new technologies like Clinical Decision Support (CDSS) – again a long term roadmap is essential.
• ROI: How does a hospital get returns on this IT investment?
- Minimization of errors – medication or surgical – and the associated risks
- Electronic trail of patient case history available to patient, insurance and physicians
- Reduced documentation and improvement in overall efficiency and throughput
- Patient Referrals from satellite clinics who can use the EMR’s external web links to document on patients – thus providing a continuous electronic report
- Possible pay-per-use by external clinics – to use EMR charting facilities
- Remote specialist consultation
- Efficient Charges, Billing and quicker settlements
- Better Clinical Decision Support – due to an electronic database of past treatments
- In the long term, efficiency means cheaper insurance which translates to volume income
- Better compliance of standards – HIPAA, privacy requirements, security
- Reduced workload due to Process Improvement across departments – ED, Obstetrics/Gynecology, Oncology/Radiology, Orthopedic, Cardiovascular, Pediatrics, Internal Medicine, Urology, General Surgery, Ophthalmology, General/family practice, Dermatology, Psychiatry
- Improved Healthcare with Proactive Patient Care due to CDSS
- Quality of Patient Care: A silent factor of a hospital’s revenue is quality of patient care. One of the chief drivers of quality of patient care is the quality of information provided efficiently to the Physicians though which they can make those critical decisions
Now, the big picture becomes clear.
Doesn’t the above set of requirements apply to any domain? This analysis need not be applicable only to a hospital domain, the same is true for a Biotech domain (where orders are received, data is processed, analyzed, and the processed data is presented or packaged). Similarly a Manufacturing Domain, Banking domain or Insurance Domain etc.
The need is for core engine software – based on EDI (Electronic Data Interchange) – that integrate and help in the Process Re-Engineering of these mini workflows securely and effectively and using common intersystem communication formats like X-12 or HL7 messages.
These Workflow Engines would be the hearts of the digital world!
*EMR – Electronic Medical Record
*CPR – Computerized Patient Record
*CDSS – Clinical Decision Support
*RHIO – Regional Health Information Organization
*CPOE – computerized physician order entry
Some of the information presented here is thanks to research papers and articles at:
*Common Framework for health information networks
*Discovery of Workflow Models for Hospital Data
*CCOW-IHE Integration Profiles
*Hospital Network Management Best Practices
*12 Consumer Values for your wall
What about the latest IT trends and their applications in healthcare?
We already know about Google Earth and Google Hybrid Maps and the advantages of Web 2.0
The next best thing is to search the best shopping deal or the best real estate by area and on a hybrid map – this recombinant web application reuse technique is called a mashup or heat map.
Mashups have applications in possibly everything from Healthcare to Manufacturing.
Omnimedix is developing and deploying a nationwide data mashup – Dossia, a secure, private, independent network for capturing medical information, providing universal access to this data along with an authentication system for delivery to patients and consumers.
Click on the below links to see the current ‘best in class mash ups‘
*After hours Emergency Doctors SMS After hours Emergency Doctors SMS system – Transcribes voicemail into text and sends SMS to doctors. A similar application can be used for Transcription Mashup (based on Interactive Voice Response – IVR): Amazon Mturk, StrikeIron Global SMS and Voice XML
* Calendar with Messages Listen to your calendar + leave messages too Mashup (based on IVR): 30 Boxes based on Voxeo , Google Calendar
* http://www.neighboroo.com/ – Housing/Climate/Jobs/Schools
* Visual Classifieds Browser – Search Apartments, visually
* http://www.trulia.com/ – Real Estate/Home pricing
* http://www.rentometer.com/ – Rent comparison
* http://realestatefu.mashfu.com/ – Real Estate Statistical Analysis
* http://www.housingmaps.com/ – Rent/Real Estate/Home pricing – linked to Craigslist
* http://virtualtourism.blogspot.com/ – Google Maps + Travel Videos
* http://www.coverpop.com/wheeloflunch/ – Wheel of Zip Code based restaurants
* More sample links at this site (unofficial Google mashup tracker) http://googlemapsmania.blogspot.com/ includes some mentionable sites :
* latest news from India by map http://www.mibazaar.com/news/
* read news by the map – slightly slow http://lab.news.com.au/maps/v01
* view news from Internet TV by map – http://5tvs.com/internet-tv-maps/news/
* see a place in 360 http://www.seevirtual360.com/Map.aspx
What’s on the wish list ? Well, a worldwide mashup for real estate, shopping, education, healthcare will do just fine. Read on to try out YOUR sample…
OpenKapow: The online mashup builder community that lets you easily make mashups. Use their visual scripting environment to create intelligent software Robots that can make mashups from any site with or without an API.
In the words of Dion HinchCliffe, “Mashups are still new and simple, just like PCs were 20 years ago. The tools are barely there, but the potential is truly vast as hundreds of APIs are added to the public Web to build out of”.
Don also covers the architecture and types of Mashups here with an update on recombinant web apps
Keep up to date on web2.0 at http://blog.programmableweb.com/
Will Silverlight and simplified vector based graphics and workflow based – xml language – XAML be the replacement for Flash and JavaFX?
Well, the technology is promising and many multimedia content web application providers including News channels have signed up for Microsoft SilverLight “WPF/E” due to the light weight browser based viewer streaming “DVD” quality video based on the patented VC-1 video codec.
Microsoft® Silverlight™ Streaming by Windows Live™ is a companion service for Silverlight that makes it easier for developers and designers to deliver and scale rich interactive media apps (RIAs) as part of their Silverlight applications. The service offers web designers and developers a free and convenient solution for hosting and streaming cross-platform, cross-browser media experiences and rich interactive applications that run on Windows™ XP+ and Mac OS 10.4+.
The only problem is LINUX is left out from this since the Mono Framework has not yet evolved sufficiently.
So, the new way to develop your AJAX RIA “multimedia web application” is – design the UI with an Artist in Adobe Illustrator and mashup with your old RSS, LINQ, JSON, XML-based Web services, REST and WCF Services to deliver a richer scalable web application.