[Magnetocardiographic markers of functional hemodynamic overloading of the right atrium].
Functional hemodynamic overloading of the right atrium can be caused by some of the dynamic factors in aviation and space flight. Our purpose was to disclose markers of the right atrium functional overloading in 6 normal males during the Stange test and Valsalva maneuver. Computerized magnetocardiography was fulfilled before (resting subjects), during and after (resting subjects) the breathing tests. Testing on a background of the flight dynamic factors resulted in a trend toward a more superficial Z-coordinate of the myocardium signal along the whole or a greater part of the atrial complex as compared with baseline measurements at rest. A supposition has been made that this Z coordinate alteration can be a marker of functional hemodynamic overloading of the right atrium associated with the breathing tests.
Bukhtiiarov
I V
IV
Vasnev
A V
AV
Maslennikov
Iu V
IuV
Kondratiuk
L L
LL
D000328:Adult; D000337:Aerospace Medicine; D016280:Atrial Function, Right / Q000502:physiology*; D001944:Breath Tests / Q000379:methods; D004562:Electrocardiography / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012016:Reference Values; D013026:Space Flight; D014636:Valsalva Maneuver / Q000502:physiology*