Changes in haemocoagulation in healthy volunteers after a 1-hour thrombotripsy using a diagnostic 2-4 MHz transcranial probe.
BACKGROUND
The aim was to monitor the changes in haemocoagulation parameters in healthy volunteers after a thrombotripsy with 1-hour transcranial Doppler monitoring using a 2-4 MHz probe.


METHODS
About 10 healthy volunteers underwent a 1-hour thrombotripsy of the middle cerebral artery (MCA), thrombotripsy of the radial artery and a standard 20-min neurosonologic examination (NSE) in 2-week intervals. Platelet count, aPTT, prothrombin time, fibrinogen, D-dimers, tPA, FDP, alpha-2-antiplasmin (AP), plasminogen, PAI-1 antigen, time of euglobulin clot lysis (ECL), homocysteine, and lipoprotein (a) were examined before, at the end and 24 h after a thrombotripsy. All adverse events were monitored.


RESULTS
After a thrombotripsy of the MCA, PAI-1 antigen, tPA antigen, fibrinogen and AP activity were significantly decreased by a mean of 32, 23, 7, and 4% respectively (P < 0.05 in all cases). After a thrombotripsy of the RA, there was a significant decrease in tPA antigen alone by an average of 14% (P < 0.05). Standard NSE did not affect any of the measured factors.


CONCLUSIONS
Thrombotripsy with 1-hour TCD monitoring using a 2-4 MHz diagnostic probe may affect the fibrinolytic system in humans.
Skoloudík
David
D
Department of Neurology, University Hospital, Ostrava, Czech Republic. skoloudik@hotmail.com
Fadrná
Tána
T
Bar
Michal
M
Zapletalová
Olga
O
Zapletal
Ondrej
O
Blatný
Jan
J
Penka
Miroslav
M
Langová
Katerina
K
Hlustík
Petr
P
Herzig
Roman
R
Kanovský
Petr
P
D000368:Aged; D001777:Blood Coagulation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D020768:Middle Cerebral Artery / Q000000981:diagnostic imaging*; D010865:Pilot Projects; D017534:Radial Artery / Q000000981:diagnostic imaging*; D013997:Time Factors; D017585:Ultrasonography, Doppler, Transcranial / Q000009:adverse effects / Q000295:instrumentation*