[The readaptation of the respiration, blood circulation and body oxygen regimen in aquanauts after saturation dives to depths of up to 450 m].
Main trace posthyperbaric and postdecompression responses to respiration, circulation and oxygen profiles, dynamics of their reduction in 99 aquanauts at pressure of 46 kgs/cm2 (0.46 mPa) during 14-30 day period have been studied. The respiratory changes were found to be characterized by: ventilatory function disorders which followed the obstructive-restrictive pattern; discoordination of ventilation regulation and slowing down of respiratory gas transport through aerohematic barrier. The hemodynamic shifts have been manifested as cardiac rhythm instability, heart pump function followed by decreased cardiac contractions on exercise exposures. The economy and efficiency of body oxygen profiles in a respiration loop become lower than that in hemodynamic loop. The rate of the alveolar oxygen supply is decreased to the levels lower than the rates of oxygen supply by arterial and mixed venous blood. The long-term functional rearrangement of respiratory gas transport followed by the phase changes combined with the specific and nonspecific reactions persisting over a period of 30-60 days and more longer after decompression, is existed.
Guliar
S A
SA
Il'in
V N
VN
Moiseenko
E V
EV
Dmitruk
A I
AI
Fedorchenko
V I
VI
Evtushenko
A L
AL
Boltychev
I R
IR
Maksimov
V P
VP
D000222:Adaptation, Physiological; D000328:Adult; D001775:Blood Circulation / Q000502:physiology*; D003664:Decompression; D004242:Diving / Q000502:physiology*; D006334:Heart Function Tests; D006801:Humans; D008875:Middle Aged; D010101:Oxygen Consumption / Q000502:physiology*; D012119:Respiration / Q000502:physiology*; D012129:Respiratory Function Tests; D013997:Time Factors
Readaptatsiia dykhaniia, krovoobrashcheniia i kislorodnogo rezhima organizma akvanavtov posle saturatsionnykh pogruzheniĭ na glubiny do 450 m.