23 June 2026
: Case report 
A 34-Year-Old Man With Exercise-Induced ST-Segment Elevation Myocardial Infarction 36 Hours After Descent From High Altitude: A Case Report
Unusual clinical course, Educational Purpose (only if useful for a systematic review or synthesis)
Zhiling He ABCDEF 1,2, Luxun Tang CDEF 2, Jingtang Hu B 2, Jiajie Liao B 3, Peng Wang B 2, Shuang Li ABCDEFG 2*DOI: 10.12659/AJCR.952048
Am J Case Rep 2026; 27:e952048
Table 1 Timeline of clinical events.
| Time point | Clinical event |
|---|---|
| 2024-09-24 to 2024-09-29 | The patient returned from a high-altitude region to the plains by train, completing the de-acclimatization period |
| 2024-10-01, 07: 30 AM | The patient participated in a marathon race |
| 2024-10-01, ~09: 30 AM | After approximately 2 hours of running (total distance ~21 km), the patient developed sudden-onset compressive chest pain, radiating to both scapular regions, accompanied by nausea, vomiting, and profuse diaphoresis |
| 2024-10-01, 09: 30-10: 00 AM | Chest pain persisted despite 30 minutes of rest, without symptom relief |
| 2024-10-01, 10: 00 AM | Emergency medical services were contacted, and the patient was transported to Chongzhou People’s Hospital |
| 2024-10-01, daytime | Initial evaluation, including ECG and cardiac biomarkers, supported a diagnosis of AMI. Dual antiplatelet therapy was initiated |
| 2024-10-01, 20: 22 PM | The patient was transferred to General Hospital of Western Theater Command for definitive management |
| 2024-10-01, 20: 45 PM | PCI was performed |
| 2024-10-01, 21: 55 PM | PCI was completed after 1 hour and 10 minutes, followed by transfer to the CCU for further monitoring and treatment |
| 1 week later | Follow-up CAG showed patent stent and mild residual stenosis |
| 2-month follow-up | Patient remained asymptomatic without recurrence of chest pain |