Coronary Syndromes and High-Altitude Exposure-A Comprehensive Review

Area of Science:

• Cardiology
• Altitude Medicine
• Preventive Cardiology

Background:

• Coronary syndromes pose risks during high-altitude exposure.
• Understanding these risks is crucial for patient safety.

Purpose of the Study:

• To review and identify preventive strategies for adverse events in patients with coronary syndromes exposed to high altitude.
• To establish guidelines for safe high-altitude travel and activity.

Main Methods:

• Systematic literature search of PubMed, EMBASE, and Web of Science.
• Inclusion of studies published within the last 30 years.
• Synthesis of findings related to coronary syndromes and high-altitude exposure.

Main Results:

• Patients with stable coronary artery disease (CAD) on optimal treatment can tolerate altitudes up to 3500m.
• Individuals with unstable angina or recent myocardial infarction (MI) within 6 months should avoid high-altitude activities.
• Contraindications for air travel include recent MI (2 weeks), angioplasty/stent (2 weeks), unstable angina, or coronary artery bypass grafting (3 weeks).

Conclusions:

• Gradual acclimatization to altitude and exercise is vital to prevent sudden cardiac death.
• Prior myocardial infarction is a significant risk factor for adverse cardiac events at high altitudes.
• Risk stratification is essential for managing patients with coronary syndromes considering high-altitude exposure.