GE Cardiac Stress Test Machine Design Teardown

GE Healthcare - Cardiac Assessment System for Exercise Testing

Consistency in layout is essential.[1]

Medical devices frequently lack consistency throughout their design.  

Lets look at GE Healthcare's CASE - Cardiac Assessment System for Exercise Testing.  It is a market leader for in 'cardiac stress tests'.  Unfortunately the console lacks consistency and uses multiple layout styles.

Not Centered

variable white space around buttons

multiple line heights

multiple horizontal alignments

multiple vertical alignments 

lowercase, capital, and capitalization

Notes

[1] Instagram released a big update to their app this week, and I was surprised with the lack of consistency throughout. Bryan Mamril has written an exceptional article summarizing the issue.