Effectiveness of echocardiographic evaluation of lung transplant candidates: Could it be an alternative to right heart catheterization?

In this study, we aimed to evaluate the value of transthoracic echocardiography in the estimation of pulmonary artery pressure and to identify the presence of pulmonary hypertension in lung transplant candidates with end-stage lung disease. Between January 2012 and September 2020, a total of 244 patients (166 males, 78 females; mean age: 48.6±13.8 years; range, 18 to 77 years) who were diagnosed with end-stage lung disease due to various underlying conditions and underwent right heart catheterization and transthoracic echocardiography within 72 h were retrospectively analyzed. Hemodynamic parameters of the patients were compared. Correlation analysis was performed among the values estimated by transthoracic echocardiography and measured by right heart catheterization for pulmonary artery pressure measurements. The median pulmonary artery systolic pressure with right heart catheterization was 43 mmHg and 40 mmHg using transthoracic echocardiography. A positive correlation was seen between the pulmonary artery systolic pressure estimated by transthoracic echocardiography and right heart catheterization (r=0.718; p