Am. J. Respir. Crit. Care Med., Vol 157, No. 1, 01 1998, 328-330.
The systemic fibrinolytic activity of intrapleural streptokinase [In Process Citation]
CW Davies, S Lok and RJ Davies
Osler Chest Unit, Churchill Hospital, Headington, Oxford, United Kingdom.
Intrapleural fibrinolytics probably improve the drainage of loculated
pleural effusions and empyemas. Studies of crude indices of systemic
coagulation suggest this effect is accompanied by little systemic
fibrinolysis, but few studies have assessed this in detail. This study
examines the systemic fibrinolytic activity of two intrapleural
streptokinase (IPSK) regimes in detail. Eight patients received a single
dose of 250,000 IU IPSK, and a further eight received serial doses of
250,000 IU IPSK every 12 h for 3 d (total dose: 1.5 million IU). Each dose
was retained in the pleural cavity for 2 h. Venous blood for prothrombin
time, activated partial thromboplastin time, thrombin time, fibrinogen, and
D-dimers due to fibrin degradation were measured before any IPSK. These end
points were then remeasured 24 h after IPSK in the single-dose group and
after 24, 48, and 72 h in the group receiving serial doses. There were no
physiologic or statistical differences in any of the indices after
administration of IPSK. IPSK administered up to a dose of 1.5 million IU
does not cause significant activation systemic fibrinolysis in humans.