The effect of medical emergency teams on patient outcome: a review of the literature

Understanding teamwork in rapidly deployed interprofessional teams in intensive and acute care: A systematic review of reviews

The rapid increase of acute and intensive care capacities in hospitals needed during the response to COVID-19 created an urgent demand for skilled healthcare staff across the globe. To upscale capacity, many hospitals chose to increase their teams in these departments with rapidly re-deployed inter-professional healthcare personnel, many of whom had no prior experience of working in a high-risk environment and were neither prepared nor trained for work on such wards. This systematic review of reviews examines the current evidence base for successful teamwork in rapidly deployed interprofessional teams in intensive and acute care settings, by assessing systematic reviews of empirical studies to inform future deployments and support of rapidly formed clinical teams. This study identified 18 systematic reviews for further analysis. Utilising an integrative narrative synthesis process supported by thematic coding and graphical network analysis, 13 themes were found to dominate the literature on teams and teamwork in inter-professional and inter-disciplinary teams. This approach was chosen to make the selection process more transparent and enable the thematic clusters in the reviewed papers to be presented visually and codifying four factors that structure the literature on inter-professional teams (i.e., team-internal procedures and dynamics, communicative processes, organisational and team extrinsic influences on teams, and lastly patient and staff outcomes). Practically, the findings suggest that managers and team leaders in fluid and ad-hoc inter-professional healthcare teams in an intensive care environment need to pay attention to reducing pre-existing occupational identities and power-dynamics by emphasizing skill mix, establishing combined workspaces and break areas, clarifying roles and responsibilities, facilitating formal information exchange and developing informal opportunities for communication. The results may guide the further analysis of factors that affect the performance of inter-professional teams in emergency and crisis deployment.

Do Physiological Variables Predict the Need for Transport to Hospital From Music Festivals? An Analysis of Australian Festival Data

OBJECTIVE

Using physiological markers to detect patients at risk of deterioration is common. Deaths at music festivals in Australia prompted scrutiny of tools to identify critically unwell patients for transport to hospital. This study evaluated initial physiological parameters to identify patients selected for transport to hospital from a music festival.

METHODS

A retrospective audit of 2045 presentations at music festivals in Victoria, Australia, was performed. Presentation heart rate, systolic blood pressure, respiratory rate, oxygen saturation, temperature, and Glasgow Coma Scale were assessed using area under the receiver operating characteristic curve (AUROC) analysis, with a prespecified threshold of 0.7.

RESULTS

The only measured variable to exceed the prespecified cutpoint was initial systolic blood pressure, with an AUROC of 0.72 and optimal cutpoint of 122 mmHg. Using commonly accepted cutpoints for variables did not improve detection performance to acceptable levels, nor did using combination systems of cutpoints.

CONCLUSIONS

Initial physiological variables are poor predictors of the decision to transport to hospital from music festivals. Systolic blood pressure was significant, but only at a clinically insignificant value. Decisions on which patients to transport from an event site should incorporate more information than initial physiology. Senior clinicians should lead decision-making about hospital transport from music festivals.

The impact of rapid response systems on mortality and cardiac arrests - A literature review

BACKGROUND

Rapid response systems were created to improve recognition of and response to deterioration of general ward patients.

AIM

This literature review aimed to evaluate the evidence on whether rapid response systems decrease in-hospital mortality and non-intensive care unit cardiac arrests.

METHOD

Six databases (MEDLINE, Cochrane Central Register of Controlled Trials, Cumulative Index of Nursing and Allied Health Literature, SCOPUS, Web of Science and PubMed) were systematically searched for primary studies published between 1st January 2014 and 31st October 2017, recruiting general ward patients, where the intervention involved introducing/maintaining a rapid response system, the comparison referred to a hospital setting without a rapid response system and the outcomes included mortality and cardiac arrests.

RESULTS

Fifteen studies met eligibility criteria: one stepped wedge cluster randomised controlled trial, one concurrent cohort controlled study and thirteen historically controlled studies. Thirteen studies investigated mortality of which seven reported statistically significant findings in favour of rapid response systems. Thirteen studies investigated cardiac arrests, of which eight reported statistically significant findings in favour of rapid response systems.

CONCLUSION

Evidence suggests that when the process of introducing/maintaining a rapid response system is successful and under certain favourable conditions, rapid response systems significantly decrease mortality and cardiac arrests.

Improving rapid response system performance in a Chinese Joint Commission International Hospital

Objective

To assess the impact of a regional rapid response system (RRS) implemented in a Chinese Joint Commission International Hospital on the timely treatment of patients with serious adverse events (SAEs).

Methods

Clinical SAEs, activation periods, reasons for RSS activation, and patient outcomes were assessed using SAE response sheets at admission to the hospital and over 31 months of follow-up.

Results

We found that 192 events were called by medical staff and 6 were called by auxiliary staff. Reasons for the 385 RRS activations included: unconsciousness (133; 34.5%), and airway obstruction and absent carotid pulse (49 each; 12.7%). The average arrival time of the medical emergency team was 2.4 ± 0.1 minutes. There were 123 (62.1%) RRS activations during daytime working hours (8:00–17:00); CPR was performed in 86 (43.4%) cases. Outcomes of RRS were: vital signs stabilized in 82 (41.4%) patients and 61 (30.8%) patients were transferred to ICU.

Conclusion

Our experience showed that the regional RRS has led to better integrated multidisciplinary cooperation and reduced time for treating patients with SAEs, resulting in success of the RRS.

The Impact of Adding a Physician Assistant to a Critical Care Outreach Team

Rationale

Hospitals are increasingly using critical care outreach teams (CCOTs) to respond to patients deteriorating outside intensive care units (ICUs). CCOT staffing is variable across hospitals and optimal team composition is unknown.

Objectives

To assess whether adding a critical care medicine trained physician assistant (CCM-PA) to a critical care outreach team (CCOT) impacts clinical and process outcomes.

Methods

We performed a retrospective study of two cohorts—one with a CCM-PA added to the CCOT (intervention hospital) and one with no staffing change (control hospital)—at two facilities in the same system. All adults in the emergency department and hospital for whom CCOT consultation was requested from October 1, 2012-March 16, 2013 (pre-intervention) and January 5-March 31, 2014 (post-intervention) were included. We performed difference-in-differences analyses comparing pre- to post-intervention periods in the intervention versus control hospitals to assess the impact of adding the CCM-PA to the CCOT.

Measurements and Main Results

Our cohort consisted of 3,099 patients (control hospital: 792 pre- and 595 post-intervention; intervention hospital: 1114 pre- and 839 post-intervention). Intervention hospital patients tended to be younger, with fewer comorbidities, but with similar severity of acute illness. Across both periods, hospital mortality (p = 0.26) and hospital length of stay (p = 0.64) for the intervention vs control hospitals were similar, but time-to-transfer to the ICU was longer for the intervention hospital (13.3–17.0 vs 11.5–11.6 hours, p = 0.006). Using the difference-in-differences approach, we found a 19.2% reduction (95 confidence interval: 6.7%-31.6%, p = 0.002) in the time-to-transfer to the ICU associated with adding the CCM-PA to the CCOT; we found no difference in hospital mortality (p = 0.20) or length of stay (p = 0.52).

Conclusions

Adding a CCM-PA to the CCOT was associated with a notable reduction in time-to-transfer to the ICU; hospital mortality and length of stay were not impacted.

Medical Rapid Response in Psychiatry: Reasons for Activation and Immediate Outcome

Rapid response teams are used to improve the recognition of acute deteriorations in medical and surgical settings. They are activated by abnormal physiological parameters, symptoms or clinical concern, and are believed to decrease hospital mortality rates. We evaluated the reasons for activation and the outcome of rapid response interventions in a 222-bed psychiatric hospital in New York City using data obtained at the time of all activations from January through November, 2012. The primary outcome was the admission rate to a medical or surgical unit for each of the main reasons for activation. The 169 activations were initiated by nursing staff (78.7 %) and psychiatrists (13 %) for acute changes in condition (64.5 %), abnormal physiological parameters (27.2 %) and non-specified concern (8.3 %). The most common reasons for activation were chest pain (14.2 %), fluctuating level of consciousness (9.5 %), hypertension (9.5 %), syncope or fall (8.9 %), hypotension (8.3 %), dyspnea (7.7 %) and seizures (5.9 %). The rapid response team transferred 127 (75.2 %) patients to the Emergency Department and 46 (27.2 %) were admitted to a medical or surgical unit. The admission rates were statistically similar for acute changes in condition, abnormal physiological parameters, and clinicians' concern. In conclusion, a majority of rapid response activations in a self-standing psychiatric hospital were initiated by nursing staff for changes in condition, rather than for policy-specified abnormal physiological parameters. The findings suggest that a rapid response system may empower psychiatric nurses to use their clinical skills to identify patients requiring urgent transfer to a general hospital.

The Impact of Implementation of an ICU Consult Service on Hospital-Wide Outcomes and ICU-Specific Outcomes

BACKGROUND

Rapid response teams (RRTs) were developed to promote assessment of and early intervention for clinically deteriorating hospitalized patients. Although the ideal composition of RRTs is not known, their implementation does require significant resources.

OBJECTIVE

To test the effectiveness of a dedicated daytime/weekday intensive care unit (ICU) consult service without formal training of ward teams.

METHODS

Pre- and postintervention study with weekends/nights during implementation period acting as a concurrent control.

SETTING

An adult tertiary care university center in Montreal without an RRT.

INTERVENTION

A daytime/weekday ICU consult service with a dedicated intensivist.

RESULTS

Total hospital mortality rate did not differ between the control and the implementation period (6.65% vs 6.60%; P = .84). The hospital code blue rates also did not differ (1.21/1000 vs 1.14/1000 patient days; P = .58). In contrast, 30-day mortality of patients admitted to the ICU following an ICU consult decreased (39% vs 24% P = .01). Multivariate analysis confirmed this effect on 30-day mortality (odds ratio for implementation period: 0.53 [95% confidence interval: 0.33-0.85] P = .009). The 14-day ICU readmission rate was reduced with the intervention (5.1% vs 4.1%; P < .001). The effect on 30-day mortality and ICU readmissions were only present during daytime/weekdays.

CONCLUSION

Implementation of an ICU consult service without any formal afferent limb training was associated with decreased mortality and 14-day readmission rates of patients admitted to the ICU. In contrast, hospital-wide mortality and code blue rates were unaffected.

There is another way: empowering frontline staff caring for acutely unwell adults

QUALITY PROBLEM OR ISSUE

It is estimated that only 17% of patients survive an in-hospital cardiac arrest. Medical evidence indicates that many patients show signs of deterioration during the 24 h period prior to their cardiac arrest.

INITIAL ASSESSMENT

At Salford Royal NHS Foundation Trust (SRFT) 135 patients (outside critical care areas) suffered a cardiac arrest between March 2007 and April 2008.

CHOICE OF SOLUTION

Quality improvement method-The breakthrough series (BTS) collaborative approach, change package-reliable manual vital signs, nurse-led response to the deteriorating patient, code red, structured ward round, ceilings of care, nurse-led do not attempt cardiopulmonary resuscitation (DNA-CPR) protocol and allocated roles.

IMPLEMENTATION

The project was delivered over two phases with a total of 23 wards (12 wards in Phase One and 11 wards in Phase Two). Frontline teams worked to develop changes with the aim of reducing cardiac arrests by 50%.

EVALUATION

The primary outcome measure was the number of cardiac arrests per 1000 admissions outside of critical care areas. Process and balancing measures were also used to evaluate the impact of the intervention.

LESSONS LEARNED

The results showed a positive relationship between the change package and a reduction of 41% in cardiac arrests outside of critical care areas from the baseline period (April 2007-March 2008) to December 2012. The BTS model has the potential to reduce cardiac arrests without the need for initial large-scale financial investment.

Imperfect implementation of an early warning scoring system in a Danish teaching hospital: a cross-sectional study

Background

In 2007, the initiation of a patient safety campaign led to the introduction of Ward Observational Charts (WOC) and Medical Early Warning Score (MEWS) at Naestved Regional Hospital. This included systematic measuring of vital signs of all patients in order to prevent patient deterioration and assure timely and correct initiation of treatment. The aim of this study was to assess to what degree WOC guidelines being followed by ward staff.

Design and Setting

A 7-day prospective, observational, randomised, cross-sectional, point prevalence study of WOC guideline compliance in hospitalised patients on twelve wards at Naestved Hospital.

Results

The study included 132 patients. Of these, 58% had been observed and managed correctly according to WOC guidelines. 77% had all MEWS elements recorded by staff. One patient had no MEWS elements recorded. Only 38% of patients with abnormal MEWS were correctly escalated by nursing staff. Staff was aware of the abnormal MEWS observed by investigator in 60% of the patients. Each element of WOC was on average recorded by staff in 90% of the patients.

Conclusion

At the time of our study, the long-term implementation of WOC guidelines has not been completed satisfactorily. The lacking component in the implementation of MEWS and WOC is the documentation of action taken upon finding an abnormal value. Unsuccessful implementation could result in incorrect results from evaluation of an early warning system. We suggest a redesign of the training programme to educate staff in recognising and caring for critically ill patients at Naestved Hospital.

Medical emergencies in the imaging department of a university hospital: event and imaging characteristics

We aimed to describe the characteristics of medical emergencies that occurred in the medical imaging department (MID) of a university hospital in Melbourne, Australia. A database of 'Respond Medical Emergency Team (MET)' and 'Respond Blue' calls was retrospectively examined for the period June 2003 to November 2010 in relation to events that occurred in the MID. The hospital medical imaging database was also examined in relation to these events and, where necessary, patients' notes were reviewed. Ethics approval was granted by the hospital ethics review board. There were 124 medical emergency calls in the MID during the study period, 28% Respond Blue and 72% Respond MET. Of these 124 calls, 26% occurred outside of usual work hours and 12% involved cardiac arrest. The most common reasons for the emergency calls were seizures (14%) and altered conscious state (13%). Contrast anaphylaxis precipitated the emergency in 4% of cases. In 83% of cases the emergency calls were for patients attending the MID for diagnostic imaging, the remainder being for a procedure. Of the scheduled imaging techniques, 45% were for computed tomography. The scheduled imaging was abandoned due to the emergency in 12% of cases. When performed, imaging informed patient management in 34% of cases in diagnostic imaging and in all cases in the context of image-guided procedures. Medical emergency calls in the MID often occurred outside usual work hours and were attributed to a range of medical problems. The emergencies occurred in relation to all imaging techniques and imaging informed patient management in many cases.