Human Factors Engineering

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By: hkahle (111 month(s) ago)

Hello John, I am a Human Factors Specialist employed in the Investigation Division at WorkSafeBC (OH&S Regulator in BC). I am a Graduate of the M.Sc. Human Factors and System Safety Prgram taught at Lund university in Sweden (former student of Sidney Dekker). My two colleagues and I have a similar mandate in that we are trying to bring HFE to workplaces all across British Columbia. I see you have used a terrific set of insutrial examples in your presntation that is very well structured for a new audience. John, I would very much enjoy the opportunity to follow-up with you and the work that you do. I will send you a LinkedIn invitation. I would like to request the download of this HFE presentation that you have created. Would that be possible? Thanks very kindly. Heather Kahle Human Factors Specialist WorkSafeBC] Investigations Division 604-233-5343 heather.kahle@worksafebc.com

By: mrpotr (146 month(s) ago)

Hello again John, I would like to request the download of this and any other human factor presentations you have created. Thank You.

Presentation Transcript

Human Factors Engineering (HFE) and Patient Safety: 

Human Factors Engineering (HFE) and Patient Safety With thanks to John Gosbee

What’s HFE?: 

What’s HFE? Designing things or processes to fit human abilities and limitations Designing the glove to fit the hand, not the hand to fit the glove (supporting/improving human performance by as little as 3-10% will make things much safer) Using specific ways to uncover hidden needs, assumptions and unexpected interactions (“heuristic evaluation”, “usability testing”) Taking advantage of knowledge about human capabilities (5 senses, communication styles, ranges in physical size and strength, etc.)

Human Factors Model: 

Human Factors Model Senses - Vision - Hearing Psychomotor - Hand - Eye movements Input Devices Keyboard - Voice recognition Output - CRT - Sound INTERFACE

HFE and Healthcare: 

HFE and Healthcare Academia University of Wisconsin (BME-IE) Catholic University in DC (BME) Government FDA-CDRH (great web site) NIH-NCI usability for patient information (www.usability.gov) Industry Medtronic (over 8 years) Baxter and Abbott (more recently)

How good are we at vigilance/ paying attention?: 

How good are we at vigilance/ paying attention?

Performance Graph : 

100% 90% 80% 70% Time (hours) 1 2 3 4 Performance Performance Graph

Performance Graph : 

100% 90% 80% 70% Time (hours) 1 2 3 4 Performance Performance Graph

How can we move the curve up (improve performance)?: 

How can we move the curve up (improve performance)? 100% 90% 80% 70% Time (hours) 1 2 3 4 Performance

How fast can we learn things?: 

How fast can we learn things? When I say “up”, everyone raise your hand as quickly as you can

This was not an aerobic exercise: 

This was not an aerobic exercise Demonstrates: “paired associate learning” Case Study Frequently used pharmacy computer used “ENTER” button for data entry Pharmacy computer used 10% of time “SPACE BAR” for data entry

What assumptions do we make?: 

What assumptions do we make? For example: Do we make important decisions based on equipment color?

What is the content of these gas cylinders?: 

What is the content of these gas cylinders? Write your answer down on paper.

What is the content of this gas cylinder?: 

What is the content of this gas cylinder? Write your answer down on paper

What is the content of these gas cylinders?: 

What is the content of these gas cylinders? Write your answer down on paper

What is this regulator used for?: 

What is this regulator used for? Write your answer down on paper

What is this regulator used for?: 

What is this regulator used for? Write your answer down on paper

Demonstration: Stroop Test: 

Demonstration: Stroop Test Row 1 Row 2 Row 3

Now, State the Color of the Text as Fast as You Can… : 

Now, State the Color of the Text as Fast as You Can… Red Red Red Blue Blue Blue Yellow Yellow Yellow Green Green Green Row 1 Row 2 Row 3

Again, State the Color of the Text as Fast as You Can…: 

Again, State the Color of the Text as Fast as You Can… Red Red Red Blue Blue Blue Yellow Yellow Yellow Green Green Green Row 1 Row 2 Row 3

Oxygen?: 

Oxygen?

Answer?: 

Answer?

Is this 95% CO2 OR 95% O2?: 

Is this 95% CO2 OR 95% O2?

Slide23: 

A – CO2 B – O2 C – O2 A B C

Oxygen: 

Oxygen

Air: 

Air

“Quotes” from Adverse Events: 

“Quotes” from Adverse Events “Quickly, have the transport person to [SIC] get the green tank and hook it up to the patient!”

Let’s see, the green tank is …: 

Let’s see, the green tank is …

“Quotes” from Adverse Events: 

“Quotes” from Adverse Events “Tell the nursing student to attach the oxygen mask and tubing to the green spigot” Remember, this is air.

“Quotes” from Adverse Events: 

“Quotes” from Adverse Events “Get the green and gray tank and put it in the endoscopy cabinet & attach it to the insufflator valve” Green tank and Gray tank? Green and Gray tank….?

Can we ignore equipment color?: 

Can we ignore equipment color? “Ignore the color in some cases, focus on the label…” Summary from an ECRI Alert “Color is not fool-proof, only read and trust the label” Guideline from the Compressed Gas Association

HFE and Actions that make things safer: 

HFE and Actions that make things safer Warning: Lost Fingers

Some HFE Actions: 

Some HFE Actions Warnings and labels Training Policies and Procedures Checklists Simplify, standardize Interlock, lock-out, forcing functions Specialized communication (e.g., read back) Physical plant changes

What’s the best action?: 

What’s the best action? Chose physical over procedural actions (example) Chose permanent over temporary actions (example) Put “knowledge in the world”… reduce the burden on human memory and vigilance (Donald Norman)

Small Group Exercise: 

Small Group Exercise Groups of 3-5 people One person as Director Job is to remind end user to think out loud; leads team after evaluation One person as End User Job is to USE the product Other members as Observers Note words used, facial expressions, etc. Purpose of Exercise - Find problems and recommend HFE redesign of the product

Some Common Design Problems: 

Some Common Design Problems Inconsistent labels, buttons, knobs, etc. Unreadable and confusing/ambiguous labels No obvious mental model for how the thing works Unclear automation What is it doing? Why is it doing that? “Mode” errors Not considering environment of use

Remember …: 

Remember … It’s all about supporting perfect human performance (for you, for me, for the next person … first time and every time) “It’s not me, it’s bad design” “It’s a marathon, not a sprint”

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