Edited by Charlene Breedlove, Associate Editor.
The space walk to repair the crippled space station Mir
has been postponed while Mir Commander Tsibliyev
undergoes evaluation for an irregular heartbeat.
"This is not good timing," said Tsibliyev.—CNN News
McGuire D. Arrhythmias on Mir. JAMA. 1998;280(24):2070E. doi:10.1001/jama.280.24.2070