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Changes in mesenteric, renal, and aortic flows with +Gx acceleration (1974)

Erickson, H. H. ; Sandler, H. ; Stone, H. L.

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Publication Date: 2019-06-27

Description: Previous studies in man and dogs have indicated that the splanchnic bed might contribute to the maintenance of arterial pressure during +Gx acceleration. Eight mongrel dogs were chronically instrumented with Doppler flow probes around the superior mesenteric (SMA) and renal arteries (RA) as well as the terminal aorta (TA). A solid-state pressure transducer was placed in the aorta distal to the flow probe. Using alpha-chloralose anesthesia following a 2-4 week recovery period, the animals were subjected to 120 sec at levels of 5, 10 and 15 +Gx acceleration on a 7.6-m radius centrifuge. The results indicate that both an active component and a mechanical component contribute to the maintenance of arterial pressure during +Gx acceleration.

Keywords: BIOTECHNOLOGY

Type: Aerospace Medicine; 45; May 1974

Format: text

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