Optimising the response to acute clinical deterioration: the role of observation and response charts

Detecting and responding to deterioration of a baby during labour: surveys of maternity professionals to inform co-design and implementation of a new standardised approach

OBJECTIVES

Detecting and responding to deterioration of a baby during labour is likely to benefit from a standardised approach supported by principles of track-and-trigger systems. To inform co-design of a standardised approach and associated implementation strategies, we sought the views of UK-based maternity professionals.

DESIGN

Two successive cross-sectional surveys were hosted on an online collaboration platform (Thiscovery) between July 2021 and April 2022.

SETTING

UK.

PARTICIPANTS

Across both surveys, 765 UK-based maternity professionals.

PRIMARY AND SECONDARY OUTCOME MEASURES

Count and percentage of participants selecting closed-ended response options, and categorisation and counting of free-text responses.

RESULTS

More than 90% of participants supported the principle of a standardised approach that systematically considers a range of intrapartum risk factors alongside fetal heart rate features. Over 80% of participants agreed on the importance of a proposed set of evidence-based risk factors underpinning such an approach, but many (over 75%) also indicated a need to clarify the clinical definitions of the proposed risk factors. A need for clarity was also suggested by participants' widely varying views on thresholds for actions of the proposed risk factors, particularly for meconium-stained liquor, rise in baseline fetal heart rate and changes in fetal heart rate variability. Most participants (>75%) considered a range of resources to support good practice as very useful when implementing the approach, such as when and how to escalate in different situations (82%), how to create a supportive culture (79%) and effective communication and decision-making with those in labour and their partners (75%).

CONCLUSIONS

We found strong professional support for the principle of a standardised approach to detection and response to intrapartum fetal deterioration and high agreement on the clinical importance of a set of evidence-based risk factors. Further work is needed to address: (1) clarity of clinical definitions of some risk factors, (2) building evidence and agreement on thresholds for action and (3) deimplementation strategies for existing local practices.

How to co-design a prototype of a clinical practice tool: a framework with practical guidance and a case study

Clinical tools for use in practice-such as medicine reconciliation charts, diagnosis support tools and track-and-trigger charts-are endemic in healthcare, but relatively little attention is given to how to optimise their design. User-centred design approaches and co-design principles offer potential for improving usability and acceptability of clinical tools, but limited practical guidance is currently available. We propose a framework (FRamework for co-dESign of Clinical practice tOols or 'FRESCO') offering practical guidance based on user-centred methods and co-design principles, organised in five steps: (1) establish a multidisciplinary advisory group; (2) develop initial drafts of the prototype; (3) conduct think-aloud usability evaluations; (4) test in clinical simulations; (5) generate a final prototype informed by workshops. We applied the framework in a case study to support co-design of a prototype track-and-trigger chart for detecting and responding to possible fetal deterioration during labour. This started with establishing an advisory group of 22 members with varied expertise. Two initial draft prototypes were developed-one based on a version produced by national bodies, and the other with similar content but designed using human factors principles. Think-aloud usability evaluations of these prototypes were conducted with 15 professionals, and the findings used to inform co-design of an improved draft prototype. This was tested with 52 maternity professionals from five maternity units through clinical simulations. Analysis of these simulations and six workshops were used to co-design the final prototype to the point of readiness for large-scale testing. By codifying existing methods and principles into a single framework, FRESCO supported mobilisation of the expertise and ingenuity of diverse stakeholders to co-design a prototype track-and-trigger chart in an area of pressing service need. Subject to further evaluation, the framework has potential for application beyond the area of clinical practice in which it was applied.

General ward nurses detection and response to clinical deterioration in three hospitals at the Kenyan coast: a convergent parallel mixed methods study

BACKGROUND

In low and middle-income countries like Kenya, critical care facilities are limited, meaning acutely ill patients are managed in the general wards. Nurses in these wards are expected to detect and respond to patient deterioration to prevent cardiac arrest or death. This study examined nurses' vital signs documentation practices during clinical deterioration and explored factors influencing their ability to detect and respond to deterioration.

METHODS

This convergent parallel mixed methods study was conducted in the general medical and surgical wards of three hospitals in Kenya's coastal region. Quantitative data on the extent to which the nurses monitored and documented the vital signs 24 h before a cardiac arrest (death) occurred was retrieved from patients' medical records. In-depth, semi-structured interviews were conducted with twenty-four purposefully drawn registered nurses working in the three hospitals' adult medical and surgical wards.

RESULTS

This study reviewed 405 patient records and found most of the documentation of the vital signs was done in the nursing notes and not the vital signs observation chart. During the 24 h prior to death, respiratory rate was documented the least in only 1.2% of the records. Only a very small percentage of patients had any vital event documented for all six-time points, i.e. four hourly. Thematic analysis of the interview data identified five broad themes related to detecting and responding promptly to deterioration. These were insufficient monitoring of vital signs linked to limited availability of equipment and supplies, staffing conditions and workload, lack of training and guidelines, and communication and teamwork constraints among healthcare workers.

CONCLUSION

The study showed that nurses did not consistently monitor and record vital signs in the general wards. They also worked in suboptimal ward environments that do not support their ability to promptly detect and respond to clinical deterioration. The findings illustrate the importance of implementation of standardised systems for patient assessment and alert mechanisms for deterioration response. Furthermore, creating a supportive work environment is imperative in empowering nurses to identify and respond to patient deterioration. Addressing these issues is not only beneficial for the nurses but, more importantly, for the well-being of the patients they serve.

Clinicians' use and perceptions of the pre-medical emergency team tier of one rapid response system: A mixed-methods study

BACKGROUND

The pre-medical emergency team (pre-MET) tier of rapid response systems facilitates early recognition and treatment of deteriorating ward patients using ward-based clinicians before a MET review is needed. However, there is growing concern that the pre-MET tier is inconsistently used.

OBJECTIVE

This study aimed to explore clinicians' use of the pre-MET tier.

METHODS

A sequential mixed-methods design was used. Participants were clinicians (nurses, allied health, doctors) caring for patients on two wards of one Australian hospital. Observations and medical record audits were conducted to identify pre-MET events and examine clinicians' use of the pre-MET tier as per hospital policy. Clinician interviews expanded on understandings gained from observation data. Descriptive and thematic analyses were performed.

RESULTS

Observations identified 27 pre-MET events for 24 patients that involved 37 clinicians (nurses = 24, speech pathologist = 1, doctors = 12). Nurses initiated assessments or interventions for 92.6% (n = 25/27) of pre-MET events; however, only 51.9% (n = 14/27) of pre-MET events were escalated to doctors. Doctors attended pre-MET reviews for 64.3% (n = 9/14) of escalated pre-MET events. Median time between escalation of care and in-person pre-MET review was 30 min (interquartile range: 8-36). Policy-specified clinical documentation was partially completed for 35.7% (n = 5/14) of escalated pre-MET events. Thirty-two interviews with 29 clinicians (nurses = 18, physiotherapists = 4, doctors = 7) culminated in three themes: Early Deterioration on a Spectrum, A Safety Net, and Demands Versus Resources.

CONCLUSIONS

There were multiple gaps between pre-MET policy and clinicians' use of the pre-MET tier. To optimise use of the pre-MET tier, pre-MET policy must be critically reviewed and system-based barriers to recognising and responding to pre-MET deterioration addressed.

Vital signs and medical emergency response (MER) activation predict in-hospital mortality in general surgery patients: a study of 15 969 admissions

BACKGROUND

The applicability of the vital signs prompting medical emergency response (MER) activation has not previously been examined specifically in a large general surgical cohort. This study aimed to characterize the distribution, and predictive performance, of four vital signs selected based on Australian guidelines (oxygen saturation, respiratory rate, systolic blood pressure and heart rate); with those of the MER activation criteria.

METHODS

A retrospective cohort study was conducted including patients admitted under general surgical services of two hospitals in South Australia over 2 years. Likelihood ratios for patients meeting MER activation criteria, or a vital sign in the most extreme 1% for general surgery inpatients (<0.5th percentile or > 99.5th percentile), were calculated to predict in-hospital mortality.

RESULTS

15 969 inpatient admissions were included comprising 2 254 617 total vital sign observations. The 0.5th and 99.5th centile for heart rate was 48 and 133, systolic blood pressure 85 and 184, respiratory rate 10 and 31, and oxygen saturations 89% and 100%, respectively. MER activation criteria with the highest positive likelihood ratio for in-hospital mortality were heart rate ≤ 39 (37.65, 95% CI 27.71-49.51), respiratory rate ≥ 31 (15.79, 95% CI 12.82-19.07), and respiratory rate ≤ 7 (10.53, 95% CI 6.79-14.84). These MER activation criteria likelihood ratios were similar to those derived when applying a threshold of the most extreme 1% of vital signs.

CONCLUSIONS

This study demonstrated that vital signs within Australian guidelines, and escalation to MER activation, appropriately predict in-hospital mortality in a large cohort of patients admitted to general surgical services in South Australia.

Optimizing the response to mental health deterioration: Nurses experiences of using a Mental Health Observation Response Chart

Recognizing mental health deterioration remains a challenge for health systems globally, with evidence of suboptimal care for patients with increasing co-morbid psychiatric illness. Mechanisms exist to detect and respond to physical deterioration with the use of Observation Response Charts, monitoring of vital signs and medical emergency teams but registered nurses lack psychiatric nursing skills to care for this patient population. Currently, there are no validated processes in place to recognize and respond to mental health deterioration in general hospital wards. This qualitative descriptive study explores nurses' experiences of using a Mental Health Observation Response Chart that uses signs of distress to track and trigger tiered responses to mental health deterioration on general hospital wards. Thirty-five surgical and rehabilitation nurses participated in focus groups from January to March 2020. All qualitative data were thematically analysed using an inductive approach. Analysis resulted in four themes: clinical relevance, a useful chart, identifying distress, and working with doctors. The clinical relevance of the chart was influenced by the level of nursing experience; patient distress; existing escalation pathways and ward culture. The study findings will inform the establishment of a process for nurses to recognize mental health deterioration that could improve patient outcomes and promote staff safety. Further research is needed to validate specific signs of distress with patients in general hospital wards and to develop findings for the clinical relevance of this approach to detect mental health deterioration and improve patient outcomes.

Clinicians' attitudes towards escalation and management of deteriorating patients: A cross-sectional study

BACKGROUND

Internationally, rapid response systems have been implemented to recognise and categorise hospital patients at risk of deterioration. Whilst rapid response systems have been implemented with a varying amount of success, there remains ongoing concern about the lack of improvement in the escalation, and management of the deteriorating patient. It also remains unclear why some clinicians fail to escalate concerns for the deteriorating patient.

OBJECTIVE

The objective of this study was to explore clinicians' attitudes towards the escalation, and management of the deteriorating patient.

METHODS

A cross-sectional online survey of conveniently sampled clinicians from the acute care sector in a regional health district in Australia was conducted. The Clinicians' Attitudes towards Responding and Escalating care of Deteriorating patients scale, was used to explore attitudes towards the escalation and management of the deteriorating patient.

RESULTS

Survey responses were received from medical officers (n = 43), nurses (n = 677), allied health clinicians (n = 60), and students (n = 57). Years of experience was significantly associated with more confidence responding to deteriorating patients (p < .001) and significantly less fears about escalating care (p < .001). Nurses (M = 4.16, SD = .57) and students (M = 4.11, SD = .55) in general had significantly greater positive beliefs that the rapid response system would support them to respond to the deteriorating patient than allied health (M = 3.67, SD = .64) and medical (M = 3.87, SD = .54) clinicians, whilst nurses and medical clinicians had significantly less fear about escalating care and greater confidence in responding to deteriorating patients than allied health clinicians and healthcare students (p < .001).

CONCLUSION

Nurses and medical officers have less fear to escalate care and greater confidence responding to the deteriorating patient than allied health clinicians and students. Whilst the majority of participants had positive perceptions towards the rapid response system, those with less experience lacked the confidence to escalate care and respond to the deteriorating patient.

Predicting Patient Deterioration: A Review of Tools in the Digital Hospital Setting

BACKGROUND

Early warning tools identify patients at risk of deterioration in hospitals. Electronic medical records in hospitals offer real-time data and the opportunity to automate early warning tools and provide real-time, dynamic risk estimates.

OBJECTIVE

This review describes published studies on the development, validation, and implementation of tools for predicting patient deterioration in general wards in hospitals.

METHODS

An electronic database search of peer reviewed journal papers from 2008-2020 identified studies reporting the use of tools and algorithms for predicting patient deterioration, defined by unplanned transfer to the intensive care unit, cardiac arrest, or death. Studies conducted solely in intensive care units, emergency departments, or single diagnosis patient groups were excluded.

RESULTS

A total of 46 publications were eligible for inclusion. These publications were heterogeneous in design, setting, and outcome measures. Most studies were retrospective studies using cohort data to develop, validate, or statistically evaluate prediction tools. The tools consisted of early warning, screening, or scoring systems based on physiologic data, as well as more complex algorithms developed to better represent real-time data, deal with complexities of longitudinal data, and warn of deterioration risk earlier. Only a few studies detailed the results of the implementation of deterioration warning tools.

CONCLUSIONS

Despite relative progress in the development of algorithms to predict patient deterioration, the literature has not shown that the deployment or implementation of such algorithms is reproducibly associated with improvements in patient outcomes. Further work is needed to realize the potential of automated predictions and update dynamic risk estimates as part of an operational early warning system for inpatient deterioration.

Use of the pre-medical emergency team tier of rapid response systems: A scoping Review

OBJECTIVE

The aim of this review was to explore use of the pre-Medical Emergency Team (pre-MET) tier of Rapid Response Systems to recognise and respond to adult ward patients experiencing early clinical deterioration.

METHODS

A scoping review of studies published in English reporting on use of a pre-MET tier in adult ward patients was conducted. Three databases were searched (Medline, CINAHL, EMBASE) for studies published between January 1995 and September 2020. Two researchers independently performed screening and quality assessments. Findings were synthesised thematically. Reporting of the review was guided by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews.

RESULTS

Six of 1669 studies were included in this review. All were single-site studies of single-parameter Rapid Response Systems in Australian hospitals. Five were quantitative studies; one had a qualitative design. Studies fulfilled 50-100% of quality criteria. Two themes were constructed: Afferent processes - Recognising and escalating pre-MET events; and Efferent processes - Pre-MET reviews and associated interventions. There was disparity between clinical practice and pre-MET escalation protocols, and reports of nurse-initiated management of early deterioration. Prospective methods and exploration of multidisciplinary perspectives were notable research gaps.

CONCLUSION

Use of the pre-MET tier of Rapid Response Systems is under-researched. Further research is needed to understand barriers and facilitators influencing use of pre-MET strategies to address patient deterioration.

Modifications to medical emergency team activation criteria and implications for patient safety: A point prevalence study

BACKGROUND

Medical emergency team (MET) activation criteria are sometimes modified to minimise unnecessary MET calls in patients who have chronic physiological derangements, have limitation of medical treatment orders in place, or have recently received treatment for clinical deterioration. However, the safety implications of modifying MET activation criteria are poorly understood.

OBJECTIVES

The aim of the study was to examine the safety of modifying MET activation criteria. Specifically, we aimed to examine the frequency and nature of modifications to MET activation criteria and compare characteristics and outcomes of patients with and without modifications to MET activation criteria.

METHODS

This was a point prevalence study using a retrospective medical record audit. Patients admitted to 14 wards on November 7, 2018, at two acute-care hospitals of one health service in Melbourne, Australia, were included (N = 430). Data were analysed using descriptive and inferential statistics. The main outcome measures included frequency and nature of modifications to MET activation criteria on a specified date, MET calls, intensive care unit admission, in-hospital cardiac arrest, and in-hospital death.

RESULTS

Amongst 430 inpatients, there were 30 modifications to MET activation criteria in 26 (6.0%) patients. All modifications were intended to trigger METs at more extreme levels of physiological derangement. Most modifications pertained to tachypnoea (26.7%; n = 8/30) and bradycardia (23.3%; n = 7/30). Patients with modifications were more likely to have documented physiological deterioration that fulfilled MET (47.8%, n = 11; p < 0.001) or pre-MET (87.0%, n = 20; p < 0.001) criteria in the preceding 24-h period than patients without modifications. Of patients with modifications, none were admitted to an intensive care unit, had a cardiac arrest, or died in the hospital. There were no differences in hospital length of stay or discharge destination between patients with and without modifications.

CONCLUSIONS

In this point prevalence study, modifications to MET activation criteria were infrequent and not associated with negative patient safety outcomes.