Clinician perception of a machine learning–based early warning system designed to predict severe sepsis and septic shock
Open accessAbstract
Objective: To assess clinician perceptions of a machine learning–based early warning system to predict severe sepsis and septic shock (Early Warning System 2.0). Design: Prospective observational study. Setting: Tertiary teaching hospital in Philadelphia, PA. Patients: Non-ICU admissions November–December 2016. Interventions: During a 6-week study period conducted 5 months after Early Warning System 2.0 alert implementation, nurses and providers were surveyed twice about their perceptions of the alert’s helpfulness and impact on care, first within 6 hours of the alert, and again 48 hours after the alert. Measurements and Main Results: For the 362 alerts triggered, 180 nurses (50% response rate) and 107 providers (30% response rate) completed the first survey. Of these, 43 nurses (24% response rate) and 44 providers (41% response rate) completed the second survey. Few (24% nurses, 13% providers) identified new clinical findings after responding to the alert. Perceptions of the presence of sepsis at the time of alert were discrepant between nurses (13%) and providers (40%). The majority of clinicians reported no change in perception of the patient’s risk for sepsis (55% nurses, 62% providers). A third of nurses (30%) but few providers (9%) reported the alert changed management. Almost half of nurses (42%) but less than a fifth of providers (16%) found the alert helpful at 6 hours. Conclusions: In general, clinical perceptions of Early Warning System 2.0 were poor. Nurses and providers differed in their perceptions of sepsis and alert benefits. These findings highlight the challenges of achieving acceptance of predictive and machine learning–based sepsis alerts.
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All 9 papers reported decreased mortality, be that all-cause, sepsis-related or both, although this was statistically significant only for 5 studies.
“All 9 papers34,44,46,50,52,58–61 reported decreased mortality, be that all-cause, sepsis-related or both, although this was statistically significant only for 5 studies”
From Deployment of machine learning algorithms to predict sepsis: systematic review and application of the SALIENT clinical AI implementation framework (2023) · cites this paper as [44]
The Introduction reports a nonsignificant trend toward reduced mortality for the authors’ earlier EWS 1.0 system, but attributes that finding to a previous study. This paper surveys clinician perceptions of EWS 2.0; its Results do not report a mortality decrease for the system studied here. It also does not establish the sentence’s count of nine papers or five statistically significant findings. (LLM, conf=0.84)
Experimental — accuracy not yet measuredMany models have been developed to improve timely identification of sepsis, but their lack of adoption has led to an implementation gap in early warning systems for sepsis.
“Many models have been developed to improve timely identification of sepsis,4,5,6,7,8,9 but their lack of adoption has led to an implementation gap in early warning systems for sepsis.10,11”
From External validation of a widely implemented proprietary sepsis prediction model in hospitalized patients (2021) · cites this paper as [11]
The Introduction (page not available in our copy) says clinician acceptance is crucial and reports that only a minority of providers found the authors’ earlier sepsis alert helpful. The Discussion > Challenges describes poor acceptance of their newer system. These passages support an adoption barrier, but do not establish that widespread lack of adoption has caused an implementation gap across sepsis early warning systems. (LLM, conf=0.84)
Experimental — accuracy not yet measuredSome implementation studies have found that AI-based alerts are relatively more salient to nurses than physicians in this regard.
“Some implementation studies have found that AI-based alerts are relatively more salient to nurses than physicians in this regard.79”
From Potential uses of AI for perioperative nursing handoffs: a qualitative study (2023) · cites this paper as [79]
It has been difficult for predictive CDSSs to achieve impactful adoption.
“It has been difficult for predictive CDSSs to achieve impactful adoption [10,13,14].”
From Factors influencing clinician trust in predictive clinical decision support systems for in-hospital deterioration: qualitative descriptive study (2022) · cites this paper as [13]
The same previous studies found that false positives from other nonsepsis etiologies could increase alarm fatigue.
“They also found that false positives from other nonsepsis etiologies could increase alarm fatigue.”
From Integrating a Machine Learning System Into Clinical Workflows: Qualitative Study (2020) · cites this paper as [27]
Two previous studies examining predictive alerts for sepsis suggested that perceived utility decreased when the model frequently identified clinically stable patients.
“Similarly, 2 previous studies examining predictive alerts for sepsis suggested that the perceived utility decreased when the model frequently identified clinically stable patients [27,28].”
From Integrating a Machine Learning System Into Clinical Workflows: Qualitative Study (2020) · cites this paper as [27]
Concerns have arisen recently regarding the potential for sepsis models to cause alert fatigue.
“Concerns have arisen recently regarding the potential for sepsis models to cause alert fatigue.2,3,4”
From Quantification of Sepsis Model Alerts in 24 US Hospitals Before and During the COVID-19 Pandemic (2021) · cites this paper as [3]
Previous studies of deployed systems have used post-hoc surveys or interviews to gauge provider impressions.
“In order to better understand factors impacting the adoption of CDS, previous studies of deployed systems have used post-hoc surveys or interviews to gauge provider impressions 28,44,53 ; however, provider impressions can differ from their actual use 4,18,27 .”
From Factors driving provider adoption of the TREWS machine learning-based early warning system and its effects on sepsis treatment timing (2022) · cites this paper as [53]
Ginestra et al. (2019) developed an early warning score system with machine learning algorithms to predict sepsis or septic shock, deployed in a large academic hospital with nurses and physicians, but their perceptions of the AI based tool were poor as most reported no change in their understanding of patient risk and only a handful of alerts led to change in patient management.
“Ginestra et al. (2019) developed an early warning score (EWS) system with machine learning algorithms to predict sepsis or septic shock.This was deployed in a large academic hospital in the United States with nurses and physicians, who received alerts from the EWS system about at-risk patients, but their perceptions of the AI based tool were poor as most reported no change in their understanding”
From The application and use of artificial intelligence in cancer nursing: A systematic review (2024) · cites this paper as Ginestra et al., 2019
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Intelligent Clinical Decision Support
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“79 Imperative AI-based CDS has been effective in some direct use cases, supporting this approach, 80 but it runs the risk of automation bias.”
MethodEvaluation of Machine Learning Models for Clinical Prediction Problems*
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What can a learning healthcare system teach us about improving outcomes?
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Clinical Decision Support for Septic Shock in the Emergency Department: A Cluster Randomized Trial
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"It depends": Configuring AI to Improve Clinical Usefulness Across Contexts
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Validation of a Machine Learning Model for Early Shock Detection
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- Authors
- Ginestra, J. C., Giannini, H. M., Schweickert, W. D., Meadows, L., Lynch, M. J., Pavan, K., Chivers, C. J., Draugelis, M., Donnelly, P. J., Fuchs, B. D., & Umscheid, C. A.
- Affiliations
- Hospital of the University of Pennsylvania (US)
- University of Pennsylvania Health System (US)
- Penn Presbyterian Medical Center (US)
- Pennsylvania Hospital (US)
- ORCID
- Venue
- Critical Care Medicine
- Published
- 2019-11
- Volume
- 47
- Issue
- 11
- Pages
- 1477-1484
- ISSN
- 0090-3493 (ISSN-L)
- PMC
- PMC6791738
- OpenAlex
- W2945543078
- Cited by
- 159
- References
- 36
- Citations by year
- 2026: 11 · 2025: 28 · 2024: 23 · 2023: 30 · 2022: 29 · 2021: 19 · 2020: 15 · 2019: 4
- FWCI
- 12.75
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Critical Care Medicine (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institutes of Health (UL1TR000003)
- National Center for Research Resources (UL1RR024134)
- National Center for Advancing Translational Sciences
- Topics
- Health Sciences › Medicine › Epidemiology › Sepsis Diagnosis and Treatment
- Health Sciences › Medicine › Surgery › Healthcare Technology and Patient Monitoring
- Physical Sciences › Computer Science › Artificial Intelligence › Machine Learning in Healthcare
- Keywords
- sepsis, septic shock, machine learning, clinical decision support, clinician perceptions, nurses, non-ICU patients, alert response
- MeSH terms
- Machine Learning, Algorithms, Attitude of Health Personnel, Diagnosis, Computer-Assisted, Hospitals, Teaching, Humans, Medical Staff, Hospital, Nursing Staff, Hospital, Practice Patterns, Physicians', Prospective Studies, Shock, Septic, Sepsis, Decision Support Systems, Clinical, Practice Patterns, Nurses', Electronic Health Records, Text Messaging
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
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