To sum up a fairly complex subject, there are various types of heart attacks, some of which require immediate treatment or else the chances of full recovery drastically decrease.
The American Heart Association (AHA) defines a ST-elevation myocardial infarction (STEMI) as:
"A severe heart attack caused by a prolonged period of blocked blood supply that affects a large area of the heart. These attacks carry a substantial risk of death and disability and call for a quick response by many individuals and systems."
A STEMI requires a "door-to-balloon time" of 90 minutes. This is the total time between when heart-attack patients arrive at the medical center admittance desk and when accurate diagnosis is made and treatment administered. If it takes longer, recovery rates drop dramatically. In general, the faster heart attack patients--especially victims of STEMIs--are tended to and treated, the less damage to the heart tissue and the better chance for a positive outcome, according to the VA.
That's where mVisum comes in. The app securely delivers high-quality electrocardiogram (EKG) images, as well as built-in messaging capabilities, to cardiologists who are away from the hospital. It's both simple to use and fully compliant with the Health Insurance Portability and Accountability Act (HIPAA).
mVisum integrates with a few existing DCVAMC systems, including the organization's GE MUSE server, a cardiology information system, its VistA digital imaging system, and the DCVAMC's BES. This is important for the continuity of information. For example, an EKG taken in one of the center's hospital rooms is simultaneously transmitted via MUSE to the VistA imaging system and the mVisum server on site. The BlackBerry server then retrieves that EKG when the appropriate cardiologists logs into the app and requests it. No EKG or other sensitive information is ever stored on physicians' BlackBerrys.
As for costs, mVisum says it depends on the nature and size of the configuration. Though not providing specifics, she said the price was "reasonable." Interested parties should contact mVisum directly for more information.
Clinical Verification of mVisum at CDVAMC
The DCVAMC's two main obstacles to launching mVisum were security and preservation of image quality, Shroff says. On one hand, the DCVAMC must legally protect its patients' personal medical information. And on the other, provided you shore up the security angle, an EKG on your phone is worthless if it's not readable or (worse) serves up inaccurate results, according to Shroff.
DCVAMC doesn't employ any third-party BlackBerry security products or firms, because it feels secure enough relying on the safeguards built into both its BES and mVisum server.
"We put a lot of emphasis on patient security, but in reality it's much more important to save their lives," Shroff says "There's no way you could do something like this and not prove that it works. Like a new drug, it must go through trials before approval. That's the same concept that needs to be applied here."
So that's exactly what Dr. Shroff and her team did for mVisum's clinical verification. DCVAMC cardiologists retrieved and analyzed 506 EKGs via BlackBerry smartphone with the following results:
* -505 of the 506 EKGs were transmitted from the mVisum server to doctors' BlackBerry devices without any issue.
* -EKG transmission time was less than 3 minutes in 95% of cases.
* -Acute STEMIs were correctly diagnosed in all cases.
* -Cardiac rhythm was correctly interpreted in about 90% of all cases.
* -Cardiac conduction was correctly interpreted in about 98% of all cases.
Shortly after the trials were deemed a success, Dr. Shroff and her team went live with mVisum in January 2009.
Future BlackBerry/Smartphone Use at DCVAMC
While the DCVAMC chose BlackBerry smartphones because of the aforementioned security strengths, she won't limit the hospital to one phone or mobile platform; she's interested in any device that helps doctors serve their patients. Devices with larger screens, like Apple's iPhone, could be better suited for interpreting medical images and reading small text in the future, she says. She considered the touch-screen BlackBerry Storm, but concerns over hardware functionality quickly turned her off that option.
The motivation behind mVisum and any other mobile application DCVAMC might launch in the future is to improve patient-care overall, as well as to empower those patient to take a more active role in their own healthcare, Dr. Shroff says.
Dr. Shroff sees many of the tasks currently being performed on laptops in medical settings making their ways to smartphone platforms as well. Possible future uses for mobile applications for physician's include remote order entry, remote chart changes, and the ability to read and make notes in real-time on medical materials from anywhere, to name a few, Dr. Shroff says.
On the patient side, Dr. Shroff envisions a future where all or most of the paper work typically required when new patients check in could be filled out via patients' smartphones. This would reduce the need for paper, and further speed up the admittance process--though she admits such a reality is very likely a long ways away. That said, the DCVAMC is already working on an iPhone application for patients, though Dr. Shroff didn't share specifics.
"Right now, we're using [smartphone technology] in a really small application to see if we can make a difference," Dr. Shroff says. "But the potential for much more is there."