Publications by authors named "Huei-Ming Ma"

Background: During cardiopulmonary resuscitation (CPR), end-tidal carbon dioxide (EtCO) is primarily determined by pulmonary blood flow, thereby reflecting the blood flow generated by CPR. We aimed to develop an EtCO trajectory-based prediction model for prognostication at specific time points during CPR in patients with out-of-hospital cardiac arrest (OHCA).

Methods: We screened patients receiving CPR between 2015-2021 from a prospectively collected database of a tertiary-care medical center.

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  • - The study focuses on using machine learning algorithms to better predict COVID-19 infections based on patient data from emergency departments (EDs), emphasizing the importance of timely diagnoses to control the disease spread
  • - Researchers developed and validated a predictive model using data from suspected COVID-19 patients at two different EDs: the first cohort from the US during the early pandemic and the second from a different country later on
  • - Three machine learning methods (random forest, gradient boosting, and extra trees classifiers) were tested for their effectiveness, with random forest showing the best performance in accurately identifying COVID-19 cases among patients in the testing cohort
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Background/purpose: To develop a prediction model for emergency medical technicians (EMTs) to identify trauma patients at high risk of deterioration to emergency medical service (EMS)-witnessed traumatic cardiac arrest (TCA) on the scene or en route.

Methods: We developed a prediction model using the classical cross-validation method from the Pan-Asia Trauma Outcomes Study (PATOS) database from 1 January 2015 to 31 December 2020. Eligible patients aged ≥18 years were transported to the hospital by the EMS.

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  • School-based cardiac screening can help identify kids at risk for sudden cardiac death, but it’s not widely used in rural areas due to cost and resource challenges.
  • * A study developed a cloud-based screening system for students, allowing heart sound recordings and ECGs to be reviewed remotely by pediatric cardiologists.
  • * Out of 1004 students, 138 were referred for further evaluation, with 62 diagnosed with previously undetected heart conditions, showcasing the system's effectiveness in rural settings.*
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  • This study evaluated a prehospital bypass strategy for large vessel occlusion strokes using the G-FAST test to improve patient outcomes in a metropolitan area.
  • It compared two groups of stroke patients: one before the intervention (802 patients) and one during the intervention using G-FAST (695 patients), focusing on rates of endovascular thrombectomy (EVT) and intravenous thrombolysis (IVT).
  • Results indicated that the intervention group had significantly higher rates of EVT and IVT, although they experienced longer prehospital and hospital times overall, suggesting that the bypass strategy is beneficial for stroke patients.
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Introduction: There are concerns regarding the adequacy of applying the diagnosis-related groups (DRG) payment system for multiple traumas (i.e., major diagnostic category 24, MDC-24) patients in Taiwan.

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Background: Termination-of-resuscitation rules (TORRs) in out-of-hospital cardiac arrest (OHCA) patients have been applied in western countries; in Asia, two TORRs were developed and have not been externally validated widely. We aimed to externally validate the TORRs using the registry of Pan-Asian Resuscitation Outcomes Study (PAROS).

Methods: PAROS enrolled 66,780 OHCA patients in seven Asian countries from 1 January 2009 to 31 December 2012.

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  • * Researchers conducted a 30-minute lecture and tests before and after training to evaluate improvements in EMTs' ability to assess trauma severity based on various criteria.
  • * Results showed a significant increase in accuracy for both intermediate EMTs and paramedics post-training, though paramedics struggled with anatomical criteria, suggesting the need for more emphasis on this aspect in FTS training.
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Background: After years of setting up public automated external defibrillators (AEDs), the rate of bystander AED use remains low all over the world. This study aimed to assess the public awareness and willingness of bystanders to use AEDs and to investigate the awareness on the Good Samaritan Law (GSL) and the factors associated with the low rate of bystander AED use.

Methods: Using stratified random sampling, national telephone interviews were conducted using an author-designed structured questionnaire.

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Background/purpose: The study aim was to develop a model for predicting patients with emergency medical service (EMS) witnessed out-of-hospital cardiac arrest (OHCA).

Methods: We used fire-based EMS data from Taipei city to develop the prediction model. Patients included in this study were those who were initially alive, non-traumatic, and age ≧20 years.

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Out-of-hospital cardiac arrest (OHCA) is an important public health problem, with very low survival rate. In treating OHCA patients, the return of spontaneous circulation (ROSC) represents the success of early resuscitation efforts. In this study, we developed a machine learning model to predict ROSC and compared it with the ROSC after cardiac arrest (RACA) score.

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Background: A low bystander cardiopulmonary resuscitation (CPR) rate is one of the factors associated with low cardiac arrest survival. This study aimed to assess knowledge, attitudes, and willingness towards performing CPR and the barriers for implementation of bystander-initiated CPR.

Methods: Telephone interviews were conducted using an author-designed and validated structured questionnaire in Taiwan.

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Background/purpose: Details of the communication between the caller and dispatcher have not been reported previously in Taiwan. This study aimed to: (1) understand the details of the communication between the caller and dispatcher among the calls for stroke patients, (2) identify factors associated with stroke recognition by dispatchers, and (3) evaluate the association between stroke recognition by dispatchers and stroke management.

Methods: We conducted a retrospective observational study involving patients with stroke or transient ischemic stroke transported by the emergency medical service, and arriving at 9 hospitals in Taipei within 3 h of symptom onset from January 1, 2013 to February 28, 2014.

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Utstein-style guidelines contribute to improved public health internationally by providing a structured framework with which to compare emergency medical services systems. Advances in resuscitation science, new insights into important predictors of outcome from out-of-hospital cardiac arrest, and lessons learned from methodological research prompted this review and update of the 2004 Utstein guidelines. Representatives of the International Liaison Committee on Resuscitation developed an updated Utstein reporting framework iteratively by meeting face to face, by teleconference, and by Web survey during 2012 through 2014.

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At the 2013 Academic Emergency Medicine global health consensus conference, a breakout session on a resuscitation research agenda was held. Two articles focusing on cardiac arrest and trauma resuscitation are the result of that discussion. This article describes the burden of disease and outcomes, issues in resuscitation research, and global trends in resuscitation research funding priorities.

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Objective: Effective airway management requires both proper technique and the appropriate devices. With the widespread implementation of advanced life-support techniques in emergency medical services (EMS), orotracheal intubation is now performed not only by professional practitioners but, in many occasions, nonprofessionals. With extensively diversified skill equipped, we tested whether the Sunscope, a patented tracheal intubation device with a digital display, is able to facilitate tracheal intubation by naïve EMS personnel with various training backgrounds.

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In emergency medical services, portable ultrasound scanners have the potential to become new-age stethoscopes for emergency physicians. For trauma cases in particular, portable ultrasound scanners can scan the chest and abdomen of emergency patients both rapidly and conveniently. This study describes the development of tele-ultrasound for pre-diagnosis in a medical emergency setting as a part of the updated Mobile Hospital Emergency Medical System (MHEMS).

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Objective: Manual reduction is the standard procedure for incarcerated inguinal hernia reduction. The role of ultrasound in incarcerated inguinal hernia reduction has not been defined. The aim of this study was to determine whether ultrasound can improve the ability to reduce incarcerated inguinal hernia safely when manual reduction fails and thereby decrease the emergency surgery rate.

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Objective: To determine the accuracy of ultrasonography for the diagnosis of necrotizing fasciitis.

Methods: This study was a prospective observational review of patients with clinically-suspected necrotizing fasciitis presenting to the emergency department of an urban (Taipei) medical center between October 1996 and May 1998. All patients underwent ultrasonographic examination, with the ultrasonographic diagnosis of necrotizing fasciitis based on the criterion of a diffuse thickening of the subcutaneous tissue accompanied by a layer of fluid accumulation more than 4 millimeters in depth along the deep fascial layer, when compared with the contralateral position on the corresponding normal limb.

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