Is autonomic modulation different between European and Chinese astronauts?
Post-spaceflight orthostatic tachycardia was observed in all European astronauts, whereas post-spaceflight orthostatic tachycardia was significantly reduced in Chinese astronauts. The basis for orthostatic intolerance is not apparent; however, many possibilities can be considered and need to be further investigated, such as genetic diversities between races, astronaut selection, training, and nutrition, etc.
Early initiation (<48 hours) of VTE prophylaxis is safe in patients with blunt splenic injuries treated nonoperatively, and may be safe as early as 24 hours.