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Often times, front-end research and human factors are ignored resulting in negative impact on the user experience. This lecture covers three healthcare applications where addressing Human factors and capturing the emotional experience would make a big difference. This lecture was given to 250 Biomedical Engineering students from SRM University in Chennai, India.
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Guest Lecture By:
Dr. Monica Weiler, Ph.D. (Human Factors Engineering)Co-founder and Design ResearcherStratos Innovation Group
How Human-centered Design of Medical Devices can save and enhance many lives
My Background
Biomedical Engineering Human Factors Engineering Human-centered Design Research
Human Factors Engineering (HFE), also known as Ergonomics, is the study of how humans (users, people) interact with machines and complex systems.
When the principles of this field is applied to the design of products, devices, services or systems, it is called
“Human-centered Design” or “Design Thinking”
Human Factors
The Big Picture
Medical Error
- 5th or 6th leading cause of death in the U.S and probably all over the world
100,000 deaths in a year.
- Huge cost - $1.1 billion a year just in the U.S.
- Almost half of all medical device recalls resulted from design flaws
- It is preventable
Why Human Factors?
Often times medical devices and environments are developed based on the technical specifications and not from the user’s or the human perspectives
The problem
- You may be part of a R&D team at a medical device company that is expected to implement Regulatory Requirements from FDA, ISO, ANSI, AAMI
ANSI/AAMI/ISO 14971:2007 Medical devices ISO/IEC 62366:2007 Medical devices AAMI/ANSI HE75:2009Quality System regulation: 21 CFR 820.30, Design Controls, Design Verifi-cation and Validation
- You may be in-charge of deciding what equipment to purchase
- You may be the person to conduct usability testing on the new device before purchase
- When errors or equipment failure happens you may be in the middle of the blame game
Why should you care?
Example 1: Infusion Pump Video
Infusion stopped prematurely
-The user fogets to resume the pump after suspend-ing it
- User is unaware of battery capacity
Consequence:
-Underdose-Delay of therapy
Example 1: Infusion Pumps
The user fails to detect or understand pump notifications
-Background noise or nuisance alarms cause user to fail to detect/ignore them
-User muffles pump’s speaker/audio, either intentionally or unintentionally
Consequence:
Delay of therapyIncorrect therapyOverdoseUnderdose
Wrong medication or concentration is delivered
- User selects and sets up pump with incorrect medication or concentration
- Medication is correct but user selects incorrect concentration or delivery rate
Consequence:
Delay of therapyIncorrect therapy
One or More Errors in 67% of the IV Infusions
Reference: http://www.fda.gov/downloads/MedicalDevices/DeviceRegulationandGuidance/HumanFactors/UCM320905.pdf
http://www.aami.org/htsi/infusion/jan2012/MarlaHusch_IVMedicationAdministrationErrorsStudy.pdf
Example 2: ICU Noise / False Alarm Video
High noise levels in ICUs - Noise levels play a significant role in making the ICU a hostile, and sometimes even dangerous, environment for patients.
- Distraction from work, confusion- Disturbance when resting
Consequence:
-Patient dissatisfaction-Patient safety threatened by distraction
Example 2: ICU Noise and False Alarms
Alarm fatigue: Clinicians can become desensitized, overwhelmed or immune to the sounds, and can suffer from ‘Alarm Fatigue.’
- Nurses are desensitized- Clinicians are overwhelmed and confused
Consequences:
- falls- delays in treatment- medication errors, or- in the worst case – death.
Avinash Konkani, Barbara Oakley, and Thomas J. Bauld (2012) Reducing Hospital Noise: A Review of Medical De-vice Alarm Management. Biomedical Instrumentation & Technology: Nov./Dec. 2012, Vol. 46, No. 6, pp. 478-487.
Example 3: Pediatric MRI Video
High noise levels during imaging- Noise levels play a significant role in making the MRI scary for the kids and causing them to be sedated
- 80% of pediatric patients have to be sedated- Scans have to be postponed if anesthesiologist is not available
Consequence:
-Patient anxiety-Repeating procedure due to movements, delay in treatment
Example 3: Pediatric MRI
http://www.gehealthcare.com/usen/accessories/adventure.html
We can either continue ignoring a very critical issue in the design and development of Medical Devices.
So, what now?
OR Consider the Human Factors approach to deliver solutions that are based on people’s needs and desires.
Five aspects of Human Factors
Cognitive
Cultural Context
Organizational
Emotional
Physical/ Environmental
Back to the Pediatric MRI Challenge -Video
How can you learn more...
Look up...
Human Factors Engineering
Human Computer Interaction
Human Centered Design
Ergonomics in Design
User Experience Research
Usability testing
FDA Human Factors Guidelines
AAMI Regulations for Medical Devices
ANSI Regulations for Medical Devices
Final words...
Always...
Go after your passion....
Dream bigger than yourself...
Keep up with best friends....
Thank you!