twenty six patients with acute ( less than 5 days ) pulmonary embolism ( pe ) confirmed by bilateral pulmonary angiography with a miller index greater than 15 were given tissue plasminogen activator ( alteplase ) ( rt-pa ) intravenously ( n = 20 ) or directly into the pulmonary artery ( n = 6 ) .
C0034065
pulmonary embolism
C0032143
rt-pa