STS-31 MS Sullivan, MS McCandless, DSO 462 medical device on OV-103 middeck

STS031-04-002 (24-29 April 1990) --- Astronauts Kathryn D. Sullivan and Bruce McCandless II, mission specialists, work together to perform one of the mission's medical experiments. The experiment is Detailed Supplementary Objective (DSO) 462, Non invasive Estimation of Central Venous Pressure During Spaceflight. Sullivan applies a gel substance to a transducer which will be placed on McCandless' jugular vein to collect the sought data. The cable links to a data recorder.