Source: A new publication in Vascular Medicine shows the results of an occupational surveillance program spurred by the development of a deep vein thrombosis (DVT) in the jugular vein of an astronaut. UNC School of Medicine’s Stephan Moll, MD was consulted by NASA when the discovery of the blood clot was made during the astronaut’s mission on the International Space Station (ISS). This was the first time a blood clot had been found in an astronaut in space, so there was no established method of treatment for DVT in zero gravity.