[State of the abdominal organs and vessels on the background of simulated venous plethora in the splanchnic vascular system].
Ultrasonic investigations of the abdominal organs and splanchnic veins were performed in essentially healthy subjects tilted at 12 degrees and 15 degrees for the period of 12 hrs. and 24 hrs. Tilting produced typical redistribution of venous blood and body liquids toward the cranial end. In its turn, blood redistribution caused excessive venous plethora and abdominal stasis. These were succeeded by expansion of large veins in the abdomen, enlargement of parenchymal organs and contraction of their echogenicity, and thickening of the hollow organs walls. Changes in the gastrointestinal functions before meal included elevated gastric, hepatic and pancreatic secretion, and an increased amount of intestinal content. The investigations demonstrated that stasis of the splanchnic veins altered functioning of the digestive organs in tilted human subjects.
Afonin
B V
BV
Noskov
V B
VB
Nichiporuk
I A
IA
Sedova
E A
EA
Goncharova
N P
NP
D000005:Abdomen / Q000000981:diagnostic imaging / Q000502:physiology*; D000328:Adult; D004064:Digestive System / Q000000981:diagnostic imaging*; D004068:Digestive System Physiological Phenomena; D005500:Follow-Up Studies; D018475:Head-Down Tilt / Q000502:physiology*; D006801:Humans; D008297:Male; D010179:Pancreas / Q000000981:diagnostic imaging / Q000502:physiology; D011169:Portal Vein / Q000000981:diagnostic imaging / Q000502:physiology; D013152:Splanchnic Circulation / Q000502:physiology*; D013154:Spleen / Q000000981:diagnostic imaging / Q000502:physiology; D013997:Time Factors; D014463:Ultrasonography