“The urinary excretion of 11-dehydro-TxB₂ was significantly higher in patients with COPD than in control subjects. Moreover, 11-dehydro-TxB₂ excretion was inversely related with arterial oxygen tension.”

"We measured the pulmonary arterial pressure and the level of Thromboxane A₂ (TXA₂), and Prostacyclin (PGI2) in 30 stable COPD patients and the level of TXA₂ and PGI2 in 10 normal subjects so as to investigate the changes of TXA2 and PGI2 in COPD patients with pulmonary hypertension."

“The results showed that the level of TXA2 increased significantly in COPD patients with dominant and latent pulmonary hypertension when compared with that in normal subjects.”