title: Ultrasonic research of abdominal organs in conditions of long-term antiorthostatic hypokinesia.
abstract: Change in functional activity of digestive system in space flight usually is associated with phenomenon of hypokinesia which takes place in microgravity. However, it is marked that the reorganization of a gastrointestinal tract in space flight occurs on a background of the phenomenon of venous plethora in abdominal cavity, which can also result in changes of functional activity in organs of digestive system. Insignificant amount of studies of venous plethora in abdominal cavity carried out in conditions of space flight does not allow to create a complete picture of this phenomenon. Hemodynamical changes comparable  to microgravity are well-simulated in conditions of a long-term antiorthostatic hypokinesia (AH)--bed-rest in a head-down tilt. The present research was performed with the aim to study venous plethora in abdominal cavity in conditions of long-term AH.
authors.affiliation: State Research Center of Russian Federation--Institute of Biomedical Problems, Moscow, Russia.
authors.forename: B V
authors.initials: BV
authors.lastname: Afonin
authors.forename: I A
authors.initials: IA
authors.lastname: Nichiporuk
authors.forename: M A
authors.initials: MA
authors.lastname: Nesterov
authors.forename: I V
authors.initials: IV
authors.lastname: Belousova
mesh_terms: D000005:Abdomen / Q000000981:diagnostic imaging* / Q000502:physiology*; D000328:Adult; D001510:Bed Rest; D004064:Digestive System / Q000000981:diagnostic imaging; D004068:Digestive System Physiological Phenomena; D005260:Female; D018475:Head-Down Tilt; D006801:Humans; D008297:Male; D010179:Pancreas / Q000000981:diagnostic imaging / Q000502:physiology; D011169:Portal Vein / Q000000981:diagnostic imaging / Q000502:physiology; D013154:Spleen / Q000000981:diagnostic imaging / Q000502:physiology; D013997:Time Factors; D014463:Ultrasonography