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01.08.2011 | Research | Ausgabe 4/2011 Open Access

Critical Care 4/2011

'Score to Door Time', a benchmarking tool for rapid response systems: a pilot multi-centre service evaluation

Zeitschrift:
Critical Care > Ausgabe 4/2011
Autoren:
Kieran J Oglesby, Lesley Durham, John Welch, Christian P Subbe
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1186/​cc10329) contains supplementary material, which is available to authorized users.

Competing interests

LD, JW and CPS are members of the National Critical Care Outreach Forum (NOrF). NOrF is an organisation of professionals working with Rapid Response Systems in the UK. The authors declare that they have no other competing interests.

Authors' contributions

All authors made substantial contributions to the study design, acquisition and interpretation of data, and they revised the manuscript for important intellectual content. CPS conceived the service evaluation. KO and CPS wrote the initial draft and performed the data analysis. All authors have read and approved the final manuscript.

Abstract

Introduction

Rapid Response Systems were created to minimise delays in recognition and treatment of deteriorating patients on general wards. Physiological 'track and trigger' systems are used to alert a team with critical care skills to stabilise patients and expedite admission to intensive care units. No benchmarking tool exists to facilitate comparison for quality assurance. This study was designed to create and test a tool to analyse the efficiency of intensive care admission processes.

Methods

We conducted a pilot multicentre service evaluation of patients admitted to 17 intensive care units from the United Kingdom, Ireland, Denmark, United States of America and Australia. Physiological abnormalities were recorded via a standardised track and trigger score (VitalPAC™ Early Warning Score). The period between the time of initial physiological abnormality (Score) and admission to intensive care (Door) was recorded as 'Score to Door Time'. Participants subsequently suggested causes for admission delays.

Results

Score to Door Time for 177 admissions was a median of 4:10 hours (interquartile range (IQR) 1:49 to 9:10). Time from physiological trigger to activation of a Rapid Response System was a median 0:47 hours (IQR 0:00 to 2:15). Time from call-out to intensive care admission was a median of 2:45 hours (IQR 1:19 to 6:32). A total of 127 (71%) admissions were deemed to have been delayed. Stepwise linear regression analysis yielded three significant predictors of longer Score to Door Time: being treated in a British centre, higher Acute Physiology and Chronic Health Evaluation (APACHE) II score and increasing age. Binary regression analysis demonstrated a significant association (P < 0.045) of APACHE II scores >20 with Score to Door Times greater than the median 4:10 hours.

Conclusions

Score to Door Time seemed to be largely independent of illness severity and, when combined with qualitative feedback from centres, suggests that admission delays could be due to organisational issues, rather than patient factors. Score to Door Time could act as a suitable benchmarking tool for Rapid Response Systems and helps to delineate avoidable organisational delays in the care of patients at risk of catastrophic deterioration.
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