A quality improvement project to reduce door-to-electrocardiogram time: A multicenter study

Influence of Organisational-Level Factors on Delayed Door-to-Balloon Time among Patients with ST-Elevation Myocardial Infarction

Objectives

This study aimed to estimate the door-to-balloon (DTB) time and determine the organisational-level factors that influence delayed DTB times among patients with ST-elevation myocardial infarction in Oman.

Methods

A cross-sectional retrospective study was conducted on all patients who presented to the emergency department at Sultan Qaboos University Hospital and Royal Hospital, Muscat, Oman, and underwent primary percutaneous coronary interventions during 2018-2019.

Results

The sample included 426 patients and the median DTB time was 142 minutes. The result of the bivariate logistic regression showed that patients who presented to the emergency department with atypical symptoms were 3 times more likely to have a delayed DTB time, when compared to patients who presented with typical symptoms (odds ratio [OR] = 3.003, 95% confidence interval [CI]: 1.409-6.400; P = 0.004). In addition, patients who presented during off-hours were 2 times more likely to have a delayed DTB time, when compared to patients who presented during regular working hours (OR = 2.291, 95% CI: 1.284-4.087; P = 0.005).

Conclusion

To meet the DTB time recommendation, it is important to ensure adequate staffing during both regular and irregular working hours. Results from this study can be used as a baseline for future studies and inform strategies for improving the quality of care.

Triage to electrocardiogram sign-off time in patients with acute coronary syndrome at a metropolitan Sydney hospital

OBJECTIVE

To compare the time from triage to ECG sign-off in patients with acute coronary syndrome, before and after the introduction of an electronic medical record-integrated ECG workflow system (Epiphany). Additionally, to assess for any correlation between patient characteristics and ECG sign-off times.

METHODS

A retrospective, single-centre cohort study was performed at Prince of Wales Hospital, Sydney. Patients were included if they were over 18 years, presented to Prince of Wales Hospital ED during 2021, had an ED diagnosis code of 'ACS', 'UA', 'NSTEMI' or 'STEMI' and were subsequently admitted under the cardiology team. ECG sign-off times and demographic data were compared between patients presenting prior to 29 June (pre-Epiphany group) and those presenting after (post-Epiphany group). Those without ECGs signed-off were excluded.

RESULTS

There were 200 patients (100 each group) included in the statistical analysis. There was a significant decrease in the median triage to ECG sign-off time, from 35 min (IQR 18-69) pre-Epiphany, to 21 min (IQR 13-37) post-Epiphany. There were only 10 (5%) patients in the pre-Epiphany group and 16 (8%) in the post-Epiphany group, who had ECG sign-off times less than the 10-min. There was no correlation between gender, triage category, age or time of shift with triage to ECG sign-off time.

CONCLUSIONS

The introduction of the Epiphany system has significantly reduced the triage to ECG sign-off time in the ED. Despite this, there remains a large proportion of patients with acute coronary syndrome who do not have an ECG signed-off within the guideline-recommended 10 min.

A modified cardiac triage strategy reduces door to ECG time in patients with ST elevation myocardial infarction

Timely performing electrocardiography (ECG) is crucial for early detection of ST-elevation myocardial infarction (STEMI). For shortening door-to-ECG time, a chief complaint-based “cardiac triage” protocol comprising (1) raising alert among medical staff with bedside triage tags, and (2) immediate bedside ECG after focused history-taking was implemented at the emergency department (ED) in a single tertiary referral center. All patients diagnosed with STEMI visiting the ED between November 2017 and January 2020 were retrospectively reviewed to investigate the effectiveness of strategy before and after implantation. Analysis of a total of 117 ED patients with STEMI (pre-intervention group, n = 57; post-intervention group, n = 60) showed significant overall improvements in median door-to-ECG time from 5 to 4 min (p = 0.02), achievement rate of door-to-ECG time < 10 min from 45 to 57% (p = 0.01), median door-to-balloon time from 81 to 70 min (p < 0.01). Significant trends of increase in achievement rates for door-to-ECG and door-to-balloon times (p = 0.032 and p = 0.002, respectively) was noted after strategy implementation. The incidences of door-to-ECG time > 10 min for those with initially underestimated disease severity (from 90 to 10%, p < 0.01) and walk-in (from 29.2 to 8.8%, p = 0.04) were both reduced. In conclusion, a chief complaint-based “cardiac triage” strategy successfully improved the quality of emergency care for STEMI patients through reducing delays in diagnosis and treatment.

Quality Improvement in the Emergency Department: A Project to Reduce Door-to-Electrocardiography Times for Patients Presenting With Chest Pain

INTRODUCTION

The American Heart Association/American College of Cardiology guidelines recommend obtaining electrocardiography for patients who present to the emergency department with chest pain in less than 10 minutes of arrival. Reducing door-to-electrocardiography time is an important step in adhering to the recommended door-to-balloon times (≤ 90 minutes) for patients who present with ST-segment elevation myocardial infarction.

METHODS

Based on lean sigma principles, a protocol was implemented in an adult emergency department that included deferring nurse triage for patients with complaints of chest pain, chest tightness, and chest pressure and providing them with a red heart symbol as an indicator for clinical technicians to prioritize their electrocardiography order. Pre- and postintervention data were collected over a 12-month period.

RESULTS

Before the intervention, the mean door-to-electrocardiography time was 17 minutes for patients with chest pain (n = 893). After the intervention, the mean door-to-electrocardiography time for patients with chest pain significantly decreased to 7 minutes (n = 1,057) (t = 10.47, P ≤ 0.001). Initially, the percentage of compliance with door-to-electrocardiography standard of 10 minutes was 31% and improved to 83% after implementation of the new protocol.

DISCUSSION

Implementation of the optimized door-to-electrocardiography protocol decreased the time for obtaining diagnostics and improved compliance with the American Heart Association/American College of Cardiology guidelines, potentially decreasing door-to-balloon times for patients who presented with ST-segment elevation myocardial infarction.

Mobile Intensive Care Unit versus Hospital walk-in patients, in the treatment of first episode ST- elevation myocardial infarction

OBJECTIVE

To determine the impact of the attention given by emergency medical services teams working in mobile intensive care units (MICU) versus patients arriving at the hospital under their own means with ST-elevation myocardial infarction (STEMI) event in terms of time to reperfusion (TR), mortality at 30 days and six months.

METHODS

We retrospectively studied 634 consecutive patients with STEMI who underwent primary a percutaneous coronary intervention from January 1st 2015 to December 31st 2018 in a single centre. Depending on the first medical contact patients were classified into two groups, MICU versus walk-in patients. We extracted data on patients' characteristics, symptoms, treatments, times to reperfusion and mortality.

RESULTS

In our study 634 patients were included, of whom 59.0% were initially attended by the MICU. Differences were seen between the two groups in time delays to the first medical contact (120.0 vs 63.0 min; p < 0.001) and TR (208.0 Vs 150.0 min; p < 0.001). Patients attended by the MICUs presented a shorter ICU and hospital stay. The lowest 30-day mortality rate was observed in MICU group: 9.0% in contrast with 4.5%, p = 0.03; remaining after 6 months. The multivariable analysis showed that the initial attention given by MICU to STEMI patients was a protective agent against mortality [OR: 0.32 (0.11-0.90); p = 0.03].

CONCLUSION

Initial attention of the patients with STEMI by doctor-on-board-MICU and available 24 h a day 7 days a week as part of a regional network (CORECAM), was associated with a decrease in the ischemia time, hospital stay and mortality of these patients in our environment.

Interventions to reduce emergency department door-to- electrocardiogram times: A systematic review

Objectives

We sought to identify emergency department interventions that lead to improvement in door-to-electrocardiogram (ECG) times for adults presenting with symptoms suggestive of acute coronary syndrome.

Methods

Two reviewers searched Medline, Embase, CINAHL, and Cochrane CENTRAL from inception to April 2018 for studies in adult emergency departments with an identifiable intervention to reduce median door-to-ECG times when compared with the institution's baseline. Quality was assessed using the Quality Improvement Minimum Quality Criteria Set critical appraisal tool. The primary outcome was the absolute median reduction in door-to-ECG times as calculated by the difference between the post-intervention time and pre-intervention time.

Results

Two reviewers identified 809 unique articles, yielding 11 before-after quality improvement studies that met eligibility criteria (N = 15,622 patients). The majority of studies (10/11) reported bundled interventions, and most (10/11) showed statistical improvement in door-to-ECG times. The most common interventions were having a dedicated ECG machine and technician in triage (5/11); improved triage education (4/11); improved triage disposition (2/11); and data feedback mechanisms (2/11).

Conclusions

There are multiple interventions that show potential for reducing emergency department door-to-ECG times. Effective bundled interventions include having a dedicated ECG technician, triage education, and better triage disposition. These changes can help institutions attain best practice guidelines. Emergency departments must first understand their local context before adopting any single or group of interventions.