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Abstract: SA-PO428

Human Factors Validation of the Tablo Hemodialysis System With Health Care Practitioners

Session Information

Category: Dialysis

  • 701 Dialysis: Hemodialysis and Frequent Dialysis


  • Lim, Brittany, Outset Medical, San Jose, California, United States
  • D'Alessandri-Silva, Cynthia J., Outset Medical, San Jose, California, United States
  • Edson, Elise, Outset Medical, San Jose, California, United States
  • Schumacher, Josh, Outset Medical, San Jose, California, United States
  • Aragon, Michael A., Outset Medical, San Jose, California, United States

Hemodialysis is a lifesaving treatment warranting extensive training to perform safely and effectively in different use environments. Shortages in nurse staffing due to the COVID 19 pandemic caused a desire to innovate systems that can be safely and effectively used by healthcare professionals (HCPs). The Tablo® Hemodialysis System (“Tablo”) is easy-to-learn, indicated for clinic, hospital, and home settings. Features include a simplified user interface, interactive touchscreen GUI coupled with videos to assist users. Prior usability testing of Tablo had a use error rate of 1.5%. Here we report on the results of simulated use human factors validation testing on recent software version of the Tablo® Hemodialysis System (“Tablo”) with HCPs in the clinic setting.


HCPs tested the Tablo in a simulated clinic environment to validate safety and usability. HCPs underwent training on all aspects of device operation; including setup, takedown, monitoring, routine maintenance, and alarm resolution. After a decay of at least one hour, HCPs performed tasks without the trainer. Task performance to use errors, close calls, and difficulties were recorded along with interview data.


Fifteen (15) HCPs were recruited, consisting of 9 RNs with prior HD experience and 6 dialysis technicians. A total of 7365 tasks were performed, with the use error rate across all tasks less than <1%, with most use errors related to Manual Blood Return. 100% of HCPs reported that they felt they could use Tablo safely and effectively. Summary of user task assessments shown in Figure 1.


After standard 3-hour training, HCPs were able to safely and effectively operate Tablo in a simulated use clinic setting. HF testing of this more recent software shows further reduction in Tablo’s already low use error rate. This supports prior data regarding the ability of HCPs to easily learn and use Tablo and the device’s ability to facilitate expansion of available dialysis nursing staff while increasing the quality and safety of dialysis treatments across the care continuum.


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