Prehospital tele-electrocardiographic triage improves the management of acute coronary syndrome in rural populations: A systematic review and meta-analysis

Effectiveness of STEMI networks with out-of-hospital triage: a systematic review and meta-analysis

INTRODUCTION AND OBJECTIVES

Primary percutaneous coronary intervention (pPCI) is recommended for ST elevation myocardial infarction (STEMI). Countries have designed various STEMI network models to optimize out-of-hospital triage, timely treatment, and patient outcomes. The aim of this study was to evaluate the effectiveness of STEMI network implementation including out-of-hospital triage in improving STEMI case-fatality and long-term mortality, and its effect on the proportion of patients presenting with heart failure, their ischemia time, and time to pPCI.

METHODS

Systematic review and meta-analysis. Searches of PubMed, Scopus, and Web of Science databases covering January 2000 to December 2023, study selection, and data extraction were completed by 3 independent reviewers.

RESULTS

A total of 32 articles were selected. STEMI network implementation with out-of-hospital triage was associated with reductions of 35% in case-fatality (95%CI, -23% to -45%), 27% in long-term mortality (95%CI, -22% to -32%), and in the proportion of patients with Killip III-IV at admission, ischemia, time and time to pPCI (-17%, 95%CI, -35% +6%; -19%, 95%CI, -6% to -31%; -33%, 95%CI, -16% to -47%, respectively). Networks based on emergency transport systems and those involving the entire health system, including primary care centers and hospitals without pPCI capabilities, showed similar effectiveness. Greater effectiveness was observed in urban vs rural areas and high-income vs middle- and low-income countries.

CONCLUSIONS

The implementation of out-of-hospital triage-based STEMI networks is effective in reducing STEMI case-fatality and long-term mortality, independently of the geographic and socioeconomic conditions of the region. Participation of the emergency transport system is the key element of successful networks.

Telemedicine for emergency patient rescue

PURPOSE OF REVIEW

This article summarizes recent developments in the application of telemedicine, specifically tele-critical care (TCC), toward enhancing patient care during various types of emergencies and patient rescue scenarios when there are limited resources in terms of staff expertise (i.e., knowledge, skills, and abilities), staffing numbers, space, and supplies due to patient location (e.g., a non-ICU bed, the emergency department, a rural hospital) or patient volume as in pandemic surges.

RECENT FINDINGS

The COVID-19 pandemic demonstrated the need for rapidly scalable and agile healthcare delivery systems. During the pandemic, clinicians and hospital systems adopted telemedicine for various applications. Taking advantage of technological improvements in cellular networks and personal mobile devices, and despite the limited outcomes literature to support its use, telemedicine was rapidly adopted to address the fundamental challenge of exposure in outpatient settings, emergency departments, patient follow-up, and home-based monitoring. A critical recognition was that the modality of care (e.g., remote vs. in-person) was less important than access to care, regardless of the patient outcomes. This fundamental shift, facilitated by policies that followed emergency declarations, provided an opportunity to maintain and, in many cases, expand and improve clinical practices and hospital systems by bringing expertise to the patient rather than the patient to the expertise. In addition to using telemedicine to maintain patient access to healthcare, TCC was harnessed to provide local clinicians, forced to manage critically ill patients beyond their normal scope of practice or experience, access to remote expertise (physician, nursing, respiratory therapist, pharmacist). These practices supported decades of literature from the telemedicine community describing the effectiveness of telemedicine in improving patient care and the many challenges defining its value.

SUMMARY

In this review, we summarize numerous examples of innovative care delivery systems that have utilized telemedicine, focusing on 'mobile' TCC technology solutions to effectively deliver the best care to the patient regardless of patient location. We emphasize how a 'paradigm of better' can enhance the entirety of the healthcare system.

Tele-ECG improves diagnosis of acute coronary syndrome and ST-elevation myocardial infarction in Côte d'Ivoire

Introduction

The emergence of cardiovascular risk factors in sub-Saharan Africa suggests an increasing incidence of acute coronary syndromes and STEMI. The aim of the study was to define the prevalence of STEMI and to describe the characteristics of patients diagnosed with STEMI within the tele-electrocardiogram (ECG) network in Côte d'Ivoire.

Method

A retrospective study was conducted from January 2015 to August 2019. All adult patients managed by one of the six hospitals within the telemedicine network who benefited from a remote interpretation of their ECG by the cardiology department of Bouaké University Hospital were included. The main reason for ECG interpretation, patient and ECG characteristics, diagnosis, response time and treatment were described.

Results

A total of 5649 patients were included. The prevalence of STEMI was 0.7% (n = 44 cases) with a mean age of 58.6 ± 11.8 years and a M/F sex ratio of 1.93. Among STEMI patients, chest pain was the main reason for ECG testing (56.8%). Most ECGs were interpreted within 12 hours (72.8%). The anterior inter-ventricular artery location (59.1%, n = 26) was predominant. The Q wave of necrosis was absent in 18% (n = 8) of cases. All patients received double anti-platelet aggregation and 50% (n = 22) additional heparin therapy. No patient underwent primary angioplasty or thrombolysis, 65.9% (n = 29) were referred to the Bouaké Cardiology Department and 34.1% (n = 15) to the Abidjan Heart Institute. Scheduled angioplasty was performed in 20% (n = 3) of patients in Abidjan.

Conclusion

Tele-ECG was an effective means of STEMI screening in Côte d'Ivoire. Systematic telethrombolysis of all patients diagnosed could improve their prognosis.

An Open-Source Graphical User Interface-Embedded Automated Electrocardiogram Quality Assessment: A Balanced Class Representation Approach

The rise in cardiovascular diseases necessitates accurate electrocardiogram (ECG) diagnostics, making high-quality ECG recordings essential. Our CNN-LSTM model, embedded in an open-access GUI and trained on balanced datasets collected in clinical settings, excels in automating ECG quality assessment. When tested across three datasets featuring varying ratios of acceptable to unacceptable ECG signals, it achieved an F1 score ranging from 95.87% to 98.40%. Training the model on real noise sources significantly enhances its applicability in real-life scenarios, compared to simulations. Integrated into a user-friendly toolbox, the model offers practical utility in clinical environments. Furthermore, our study underscores the importance of balanced class representation during training and testing phases. We observed a notable F1 score change from 98.09% to 95.87% when the class ratio shifted from 85:15 to 50:50 in the same testing dataset with equal representation. This finding is crucial for future ECG quality assessment research, highlighting the impact of class distribution on the reliability of model training outcomes.

Effect of triage training on nurses' practice and triage outcomes of patients with acute coronary syndrome

BACKGROUND

Accurate assessment and prompt management of patients with acute coronary syndrome (ACS) is a complex process for emergency department (ED) nurses and has variable clinical outcomes. The aim of the present study was to determine the effectiveness of an educational intervention on nurses' practice during the triage of patients with ACS and the triage outcomes in this group of patients.

METHODS

In this quasi-experimental study, a pretest-posttest group of 24 nurses were included by convenience sampling method and 960 patients with ACS were selected by sequential sampling during the pre-intervention (n = 480) and post-intervention (n = 480) phases. A case-based learning (CBL) intervention was performed for nurses for one month considering the role of the triage nurse according to the American College of Cardiology (ACC) and the American Heart Association (AHA) recommendations as well as the factors affecting the proper identification and management of patients with ACS. During patient triage in the pre- and post-intervention phases, the "Triage Nurse Practice Checklist" and the "Medical Electronic Records" were used to assess nurses' practice and the triage outcomes in patients, respectively.

RESULTS

The overall mean score of the triage nurses' practice and its subscales, including Primary monitoring and assessment, cardiovascular risk factors assessment, evaluation of coronary heart disease (CHD) symptoms, chest pain management, and adherence to the ACC/AHA practice guidelines were significantly improved in the post-intervention phase compared with the pre-intervention phase (p < 0.001). There was no significant difference between the triage outcomes, including in-hospital mortality within 24 hours, death in ED, hospitalization in other wards, and discharge from ED in the pre and post-intervention phases (P = 0.723).

CONCLUSION

The development of a cardiac triage-specific educational program could improve the performance of nurses in the evaluation and management of patients with ACS, but had no effect on the triage outcomes in this group of patients. We recommend a quality improvement project or a critical outcomes-based triage system to assess ACS patients' care needs in the ED.

Telecardiology in Rural Practice: Global Trends

The management of cardiovascular diseases in rural areas is plagued by the limited access of rural residents to medical facilities and specialists. The development of telecardiology using information and communication technology may overcome such limitation. To shed light on the global trend of telecardiology, we summarized the available literature on rural telecardiology. Using PubMed databases, we conducted a literature review of articles published from January 2010 to December 2020. The contents and focus of each paper were then classified. Our search yielded nineteen original papers from various countries: nine in Asia, seven in Europe, two in North America, and one in Africa. The papers were divided into classified fields as follows: seven in tele-consultation, four in the telemedical system, four in the monitoring system, two in prehospital triage, and two in tele-training. Six of the seven tele-consultation papers reported the consultation from rural doctors to urban specialists. More reports of tele-consultations might be a characteristic of telecardiology specific to rural practice. Further work is necessary to clarify the improvement of cardiovascular outcomes for rural residents.

The Effectiveness of Mobile Cloud 12-Lead Electrocardiogram Transmission System in Patients with ST-Segment Elevation Myocardial Infarction

Backgroundand Objectives: Delay of reperfusion therapy is related to high mortality in cases of ST-segment elevation myocardial infarction (STEMI). Guidelines emphasize that the first-medical-contact-to-balloon (FMCTB) time should be within 90 min. A mobile cloud-based 12-lead electrocardiogram (MC-ECG) transmission system might be useful in such cases, especially in rural areas. Materials and Methods: From April 2019 to June 2021, both an MC-ECG transmission system and the conventional method in which a physician checks the ECG in a hospital (Conventional) were used for transport by emergency medical services in Shin-Yukuhashi Hospital, Fukuoka, Japan. During this period, 8684 consecutive patients were transported to this hospital. Among them, we investigated 48 STEMI patients. The MC-ECG group (n = 23) and the Conventional group (n = 25) were enrolled. Results: There was no significant difference in FMCTB time between the MC-ECG and Conventional groups (MC-ECG: 72.0 (60.5–107) min vs. Conventional: 80.0 (63.0–92.0) min, p = 0.77). The length of hospital stay in the MC-ECG group was significantly shorter than that in the Conventional group (12.0 (10.0–15.0) days vs. 16.0 (12.0–19.0) days, p = 0.039). The logistic regression model showed that patients’ non-use of MC-ECG was associated with a risk of more than 15-day length of hospital stay with an adjusted odd ratio of 0.08 (95% CI: 0.013–0.55, p = 0.0098). Conclusions: Using the MC-ECG, the length of hospital stay in patients with STEMI was significantly reduced.

Contemporary Implications of ECG to Activation Time on Long-term Outcomes in Patients With ST-Segment Elevation Myocardial Infarction Treated With Primary Percutaneous Coronary Intervention

PURPOSE

The prognosis of door to balloon time (DBT) after primary percutaneous coronary intervention (PPCI) in ST-segment elevation myocardial infarction (STEMI) has been extensively studied. However, the clinical implications of the ECG to activation time (EAT), as a component of DBT, on long-term outcomes are less well established. This study evaluates the association of EAT with major adverse cardiovascular events (MACEs) in more contemporary patients undergoing PPCI and investigates factors that influence EAT.

METHODS

A total of 1082 consecutive patients with STEMI who underwent PPCI from 2013 to 2019 were classified into 3 groups according to EAT: EAT ≤30 minutes, EAT of 30 to 60 minutes, and EAT >60 minutes. We analyzed the incidence of MACEs, including all-cause death, nonfatal recurrence of MI, or nonfatal stroke during a median follow-up of 37 months.

FINDINGS

The median EAT was 58 minutes (interquartile range, 44-80 minutes), which explained 90% of the variability in DBT and had the strongest correlation with DBT (r = 0.95, P < 0.001). Achieving an EAT of ≤30 minutes resulted in a 94.1% chance of achieving a DBT ≤90 minutes. The incidence of MACEs had a concurrent increase with increased EAT (10.2% for EAT ≤30 minutes, 14.3% for EAT of 30-60 minutes, and 17.3% for EAT >60 minutes; P = 0.027) that was driven by more mortality (4.2% for EAT ≤30 minutes, 6.9% for EAT of 30-60 minutes, and 9.8% for EAT >60 minutes; P = 0.020). An EAT >30 minutes was independently associated with risk-adjusted long-term MACEs (hazard ratio = 1.99; 95% CI, 1.07-3.69; P = 0.030). Critically ill status in emergency department (P = 0.001) and time required for consent of revascularization (P < 0.001) were significantly associated with delayed EAT.

IMPLICATIONS

Achieving an EAT ≤30 minutes was key to achieving the guideline-recommended target time of DBT in contemporary practice. As a strong driver of overall DBT, EAT >30 minutes was associated with worse clinical outcome in patients with STEMI undergoing PPCI. These data suggest that efforts to minimize EAT are needed to reduce long-term MACEs in contemporary population. (Clin Ther. 2021;XX:XXX-XXX) © 2021 Elsevier HS Journals, Inc.

Telemedicine for detecting Brugada Syndrome in eastern Indonesia: A multi-center prospective observational study

BACKGROUND

The incidence of Brugada syndrome has been reported to occur mostly in Asian countries. However, key countries such as Indonesia, the largest-populated Southeast Asian country, have yet to report any existing data regarding the incidence of Brugada syndrome among its population. Detecting these patients has been challenging, especially in primary healthcare settings, which generally have limited resources. Telemedicine may represent an ideal solution for initial diagnosis to determine if a patient may have this condition.

METHODS

We collected and analyzed numerous 12-lead electrocardiograms (ECG) of patients who visited various healthcare centers in Makassar for routine medical check-up between June 2017-April 2018. Electrocardiograms from these centers were sent to the Cardiac Center at Dr. Wahidin Sudirohusodo Hospital in Makassar via telemedicine.

RESULTS

During the period, we successfully obtained 9558 ECGs. While none of the patients were initially suspected of Brugada Syndrome, we found 102 (1.07%) among them to have a Brugada ECG pattern (BrEP). BrEP was more commonly found in males compared to females (67.6% vs. 32.4% of the cases found). There were significant differences in the number of confirmed cases among the types of BrEP for male and female patients. The number of confirmed cases of BrEP in male and female patients were significantly different (p < 0.05), where the number of cases for male vs. female was 8 vs. 4 for type 1, 17 vs. 1 for type 2, and 44 vs. 28 for type 3.

CONCLUSION

Brugada syndrome is a disease that is at grave risk of being frequently underdiagnosed. Our study indicates that telemedicine can become an appropriate tool that can assist physicians in detecting suspected patients. Future efforts should also be directed at studying the possible use of telemedicine for detecting other similarly rare conditions.