Author + information
- Kit Chan,
- Kuang An Wan,
- Sai Chau Leung,
- Jessica Wai Ling Poon,
- Natalie Leung,
- Ngai Shing Mok and
- Yuk Kong Lau
Background: Over the past 15 years (2002-2016), 755,979 people participated in the Hong Kong Standard Chartered Marathon (HKSCM). We aim to study the incidence of marathon-related sudden cardiac arrest (SCA) and non-fatal myocardial injury (NFMI).
Methods: All the HKSCM related admissions between 2002 and 2016 were retrieved from the accident and emergency department admission records. We reviewed the data of HKSCM runners admitted for SCA and NFMI.
Results: Ten and 33 runners were admitted for SCA (Mean age 36±13 years; 9 men) and NFMI (Mean age 42±12 years; 28 men) respectively. The arrest rhythms could not be retrieved in 2 cases. In the remaining 8 SCA runners, the arrest rhythms were ventricular fibrillation (VF) (N=4), pulseless-electrical activity (PEA) (N=3), and asystole (N=1). Seven of the 10 SCA runners were successfully resuscitated. Only 1 out of the 7 SCA runners had significant coronary artery disease (CAD). Among the 7 resuscitated SCA runners, the etiologies of CA were myocardial infarction (MI) (N=1), ischemic cardiomyopathy with VF (N=1), idiopathic VF (N=1), malignant coronary anomaly (N=1), and idiopathic (N=3). Percutaneous coronary intervention (PCI) was performed in 1 SCA runner with MI. Implantable cardioverter-defibrillators were implanted in 2 resuscitated runners with VF. Postmortem examination of the 3 deceased runners showed significant CAD in two and was unrevealing in one. Among the 33 NFMI runners, coronary angiograms (CAG) were performed in 8 cases (24%), which showed mild CAD, single and triple vessels diseases in 3, 1 and 4 runners respectively. Computed tomography CAG in 2 cases (6%) were normal. PCI and coronary artery bypass were performed in 3 and 2 NFMI runners respectively. Invasive CAG were not performed in the remaining runners due to low pre-test likelihood of CAD and normal non-invasive test results.
Conclusions: The incidence of SCA and mortality among HKSCM runners was 1.3 per 100,000 and 0.4 per 100,000 respectively. The incidence of NFMI was 4.4 per 100,000. Coronary artery disease, coronary anomaly and idiopathic VF were the commonest etiologies of SCA.
Moderated Poster Contributions
Arrhythmias and Clinical EP Moderated Poster Theater, Poster Hall, Hall C
Saturday, March 18, 2017, 10:15 a.m.-10:25 a.m.
Session Title: ECG Screening and Risk Prediction
Abstract Category: 7. Arrhythmias and Clinical EP: Sports and Exercise
Presentation Number: 1213M-07
- 2017 American College of Cardiology Foundation