Abstract
Aims: The aim of the study is to investigate the relationship between pulmonary arterial CT obstruction index rate (PACTOIR) and echocardiography(ECHO) findings and arterial blood gase(ABG) values in patients with pulmonary thromboembolism(PTE).
Methods: The CT pulmonary angiography of 54 patients with PTE was analyzed prospectively. The severity was assessed by PACTOIR by an experienced radiologist. ABG values, transthoracic ECHO results were recorded for each patient. The threshold of 50% for PACTOIR was taken.
Results: Arterial partial pressure of oxygen(PaO2), Arterial oxygen saturation(SaO2%), Alveoloar-arterial oxygen gradient P(A-a)O2 gradients showed a significant correlation in both PACTOIR threshold values of 50%. As PACTOIR increased, PaO2, SaO2 and Arterial partial pressure of carbon dioxide(PaCO2) values were found decreased. However, significant increase was seen in P(A-a)O2 gradient. sPAP values of the patients with PACTOIR> 50 were significantly higher than those of the patients with PACTOIR≤ 50 (p<0,001). (sPAP) was significantly above 40 mmHg and right ventricular (RV) dilatation was significantly greater (p= 0.002, p< 0,001) in patients with PACTOIR> 50.
Conclusion: In this study correlation was found between PACTOIR, ABG values and ECHO findings. Right ventricular dilatation could be predicted by PACTOIR and its early prediction before the patient's hemodynamic instability and shock should have high priority in the management of the disease.
- Copyright ©ERS 2015