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:: Volume 11, Issue 1 (Autumn 2008) ::
EBNESINA 2008, 11(1): 23-33 Back to browse issues page
Air travel and cardiovascular events
H Mirzababaiy , A Eskandari, M Samadpoor, K Alizadeh
Abstract:   (12984 Views)
Annudly 2 billion passengers undertake international and domestic air travel. Cardiac events account for the greatest percentage of flight diversions and appear to represent the major cause of in-flight death. Patients with cardiovascular disease can be more sensitive to changes in arterial oxygen saturation. The net effect of such pressure changes is in decreasing arterial oxygen tension which could provoke ischemia and arrhythmia in those most susceptible. As a result, before flight, oxygen bags must be considered for such passengers. Several studies have demonstrated increased and mean pulmonary arterial pressure at high altitudes could be due to sympathetic activity and hypoxia. The increase in pulmonary artery pressure suggest that travelers with depressed ejection fractions might suffer from increased symptoms of right or left sided heart failure during air travel. Dehydration has been a major concern with long haul air travel. Theoretically, dehydration could be expected to contribute to the deleterious effect of air travel on cardiac patients by effectively decreasing preload and therefore cardiac output in patients with pacemakers and ICDs that are adjusted externally via a wireless communication link, magnets producing a strong enough field that inhibit tachycardia therapy when placed on top of almost all ICD models. Pulmonary embolism (PE) has been suggested as a culprit in deaths related to air travel. Risk of symptomless calf DVT is high in subjects over 50 years of age on flights longer than 8 h. The role of aspirin therapy in the prevention of VTE has been a subject of considerable debate. Compression stocking appear to represent a reasonable measure in all travelers over the age of 50 years who fly for more than 8 h or further than 5000 Km. The current generation of pacemakers and ICDs would allow easy access to data regarding in flight arrhythmia and might help to further elucidate the impact of altitude on the occurrence of ventricular and atrial arrhythmias.
Keywords: Air travel, Cardiovascular diseases, Deep vein thrombosis
Full-Text [PDF 410 kb]   (2387 Downloads)    
Type of Study: Research | Subject: General
Received: 2012/03/7 | Accepted: 2014/06/3 | Published: 2014/06/3
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Mirzababaiy H, Eskandari A, Samadpoor M, Alizadeh K. Air travel and cardiovascular events. EBNESINA. 2008; 11 (1) :23-33
URL: http://ebnesina.ajaums.ac.ir/article-1-68-en.html

Volume 11, Issue 1 (Autumn 2008) Back to browse issues page
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