Visual Display Format Affects the Ability of Anesthesiologists to Detect Acute Physiologic Changes: A Laboratory Study Employing a Clinical Display Simulator

Gurushanthaiah, Keerti; Weinger, Matthew B.; Englund, Carl E.

doi:10.1097/00000542-199512000-00009

Cited by 56 publications

(38 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Detecting a signal change as early as possible and reliably distinguishing it from noise is clearly very important, but the cognitive challenge is substantial. There have been some reports of novel graphical or 'ecological' methods of presenting information to anaesthetists, but very little research into the basic principles that could guide the development of an optimal display of core data during an anaesthetic [1][2][3]. We do not know whether the inclusion of information on the 'history' of a particular variable is helpful or not, and if it is, whether it is better to present this historical information graphically or numerically.…”

mentioning

confidence: 99%

The influence of various graphical and numeric trend display formats on the detection of simulated changes*

et al. 2009

View full text Add to dashboard Cite

SummaryIntegration of a large amount of information is important in anaesthesia but there is little research to guide the development of data displays. Anaesthetists from two hospitals participated in five related screen based simulation studies comparing various formats for display of historical or 'trend' data. Participants were asked to indicate when they first noticed a change in each displayed variable. Accuracy and latency (i.e. delay) in detection of changes were recorded. Latency was shorter with a graphic display of historical data than with a numeric display. Increasing number of variables or reduction of y-axis height increased the latency of detection. If the same number of data points were included, there was no difference between graphical and numerical displays of historical data. There was no difference in accuracy between graphical or numerical displays. These results suggest that the way trend data is presented can influence the speed of detection of changes.

show abstract

mentioning

confidence: 99%

The influence of various graphical and numeric trend display formats on the detection of simulated changes*

et al. 2009

View full text Add to dashboard Cite

show abstract

“…Vigilance is defined as "a state of readiness to detect and respond to certain specified small changes occurring at random intervals in the environment," 40 and it can be adversely affected by many factors, including experience, motivation, task complexity, workload, and faulty equipment or system design. 24,41 Anesthesiologists' vigilance to auditory 42 and visual 15,16,38,39 alarm cues as well as to changes in clinical variables 43,44 have been studied in both the laboratory and the OR.…”

Section: Vigilancementioning

confidence: 99%

Effects of Intraoperative Reading on Vigilance and Workload during Anesthesia Care in an Academic Medical Center

Slagle

Weinger

2009

Anesthesiology

View full text Add to dashboard Cite

Background: During routine cases, anesthesia providers may divert their attention away from direct patient care to read clinical (e.g., medical records) and/or nonclinical materials. The authors sought to ascertain the incidence of intraoperative reading and measure its effects on clinicians' workload and vigilance.Methods: In 172 selected general anesthetic cases in an academic medical center, a trained observer categorized the anesthesia provider's activities into 37 possible tasks. Vigilance was assessed by the response time to a randomly illuminated alarm light. Observer-and subject-reported workload were scored at random intervals. Data from Reading and Non-Reading Periods of the same cases were compared to each other and to matched cases that contained no observed reading. The cases were matched before data analysis on the basis of case complexity and anesthesia type.Results: Reading was observed in 35% of cases. In these 60 cases, providers read during 25 ؎ 3% of maintenance but not during induction or emergence. While Non-Reading Cases (n ‫؍‬ 112) and Non-Reading Periods of Reading Cases did not differ in workload, vigilance, or task distribution, they both had significantly higher workload than Reading Periods. Vigilance was not different among the three groups. When reading, clinicians spent less time performing manual tasks, conversing with others, and recordkeeping.Conclusions: Anesthesia providers, even when being observed, read during a significant percentage of the maintenance period in many cases. However, reading occurred when workload was low and did not appear to affect a measure of vigilance.

show abstract

“…Many different areas of medicine, such as anesthesiology and intensive care, use electronic monitoring of physiologic processes (Gurushanthaiah, Weinger, & Englund, 1995;Sanborn, 2005). Labor and delivery units are no exception and commonly use electronic fetal monitoring (EFM) to assess fetal health during labor (Chez, Harvey, & Harvey, 2000;Figueras et al, 2005;Gandhi & Kean, 2008;Sweha, Hacker, & Nuovo, 1999).…”

Section: Introductionmentioning

confidence: 99%

Observer’s Performance and Perceptual Sensitivity for Detecting Critical Patterns in Static Maternal-Fetal Heart Rate Images

Anderson-Montoya

Scerbo

Kennedy

et al. 2013

Proceedings of the Human Factors and Ergonomics Society Annual

View full text Add to dashboard Cite

The present study examined detection performance and perceptual sensitivity for critical patterns in maternal-fetal heart rate (MFHR) signals in single and combined formats. Forty-one undergraduate students viewed simulated images of MFHR signals under four different signal-to-noise (S/N) ratios. The images contained an acceleration, early deceleration, late deceleration, or no deviation. Further, the deviations varied in amplitude. The results showed that as variability increased and amplitude decreased perceptual sensitivity also decreased and participants experienced reduced ability to detect signals and committed more false alarms. These effects were more pronounced when performing the combined condition compared to the single condition. These findings highlight that interpretation of MFHR signals is subject to misinterpretation and underscores the need for countermeasures.

show abstract

Visual Display Format Affects the Ability of Anesthesiologists to Detect Acute Physiologic Changes: A Laboratory Study Employing a Clinical Display Simulator

Cited by 56 publications

References 15 publications

The influence of various graphical and numeric trend display formats on the detection of simulated changes*

The influence of various graphical and numeric trend display formats on the detection of simulated changes*

Effects of Intraoperative Reading on Vigilance and Workload during Anesthesia Care in an Academic Medical Center

Observer’s Performance and Perceptual Sensitivity for Detecting Critical Patterns in Static Maternal-Fetal Heart Rate Images

Contact Info

Product

Resources

About