<prompt> Life threatening intravascular hemolysis occurs with sepsis due to which organism?Clostridium perfringensMycoplasma pneumoniaPseudomonaKlebsiella  <response>: Life threatening intravascular hemolysis due to a toxin with lecithinase activity is seen in Clostridium perfringens sepsis. Ref: Harrisons principles of internal medicine, 18th edition, Page 881 