Rhythm Disturbances in the Aerospace Medicine

Öz

A number of rhythm disorders such as sinus arrhythmia, premature ventricular contractions, premature atrial contractions and sinus bradycardia and heart rate alterations may be seen under +Gz. The shift in autonomic balance may lead to alterations in cardiac rhythm and heart rate. The significance of these rhythm disturbances is not yet fully understood. In this manuscript the rhythm disturbances in the aerospace medicine were reviewed.Key Words: Aerospace medicine; rhythm disturbances; gravity

Anahtar Kelimeler

• Aerospace medicine, rhythm disturbances; gravity

Havacılık ve Uzay Tıbbında Ritim Bozuklukları

Öz

Sinüzal aritmi, ventriküler erken vurular, atriyal erken vurular ve sinüs bradikardisi gibi birçok ritim bozukluğu ve kalp hızı değişiklikleri +Gz altında görülebilir. Otonomik balanstaki kayma kardiyak ritim ve kalp hızında değişikliklere yol açabilir. Bu ritim bozukluklarının önemi tam olarak anlaşılamamıştır. Bu yazıda, hava ve uzay tıbbında gözlemlenebilen ritim bozuklukları gözden geçirilmiştir.

Anahtar Kelimeler

• Havacılık ve uzay tıbbı, ritim bozuklukları; yer çekimi

Kaynakça

1. www.faa.gov/pilots/training/airman_education/aerospace_physiology/ index.cfm
2. Lees PJ. Cardiology in space. Hellenic J Cardiol 2005;46:320-3.
3. Leguay G, Seigneuric A. Cardiac arrhythmias in space. Role of vagotonia. Acta Astronaut 1981;8:795-801.
4. Baevsky RM, Bennett BS, Bungo MW, Charles JB, Goldberger AL, Nikulina GA. Adaptive responses of the cardiovascular system to prolonged spaceflight conditions: assessment with Holter monitoring. J Cardiovasc Diagn Proced 1977;14:53-7.
5. Rossum AC, Wood ML, Bishop SL, Deblock H, Charles JB. Evaluation of cardiac rhythm disturbances during extravehicular activity. Am J Cardiol 1997;79:1153-5.
6. Gundel A, Drescher J, Spatenko YA, Polyakov VV. Heart period and heart period variability during sleep on the MIR space station. J Sleep Res 1999;8:37-43.
7. Burton RR, Whinnery JE, Forster EM. Anaerobic energetics of the simulated aerial combat maneuver (SACM). Aviat Space Environ Med 1987;58:761-7.
8. Migeotte PF, Prisk GK, Paiva M. Microgravity alters respiratory sinus arrhythmia and short-term heart rate variability in humans. Am J Physiol Heart Circ Physiol 2003;284:H1995-2006.

9. Leverett S, Whinnery J. Biodynamics: Sustained Acceleration pp 202-249 in R DeHart Fundamentals of Aerospace Medicine, Lea and Febiger, New York, 1985.
10. Leguay G, Seigneuric A. Cardiac arrhythmias in space. Role of vagotonia. Acta Astronaut 1981;8:795-801.
11. Rotman M, Triebwasser JH. A clinical and follow-up study of right and left bundle branch block. Circulation 1975;51:477-84.
12. Manning GW. An historical review of the electrocardiogram of right bundle branch block in the Royal Canadian Air Force. Can J Cardiol 1987;3:375-7.
13. Taniguchi M, Nakano H, Kuwahara K, Masuda I, Okawa Y, Miyazaki H, et al. Prognostic and clinical significance of newly acquired complete right bundle branch block in Japan Airline pilots. Intern Med 2003;42:21-4.