Relationship between right ventricular dilatation and blood copeptin levels in patients with acute pulmonary embolism

Purpose: In this study, we aimed to investigate the importance of copeptin in the diagnosis of acute pulmonary embolism, detection of right ventricular dilatation and clinical severity and prognosis of pulmonary embolism. Materials and Methods: In the study three groups were created; Group 1: Pulmonary embolism patients with right ventricular dilatation in echocardiography, Group 2: Pulmonary embolism patients without right ventricular dilatation in echocardiography, Group 3: Healthy people. Five mL of venous blood was collected for the measurement of serum copeptin from the patients and control group. D-dimer and troponin were studied with routine blood samples. Complaints, symptom and physical examination findings, tomography and echocardiography results, laboratory results of patients and treatments they received were recorded for the statistical analysis. Results: Copeptin levels of acute pulmonary embolism patients were significantly higher than healthy individuals (P < 0.001). Copeptin values of Group 1 patients were significantly higher than Group 2 patients and Group 3 patients (P < 0.001). There was a statistically significant difference the levels of copeptin, D-dimer and troponin between patients with right ventricular dilatation and patients without right ventricular dilatation (P < 0.05). AUC value in detecting right ventricular dilatation of copeptin was found to be 0.82, while specificity was 83.3% and sensitivity was 69.6%. Copeptin, D-dimer and troponin levels of patients with increased pulmonary artery pressure were statistically significantly higher than patients with normal pulmonary artery pressure (P < 0.05). Conclusion: Copeptin can be used in the diagnosis of acute pulmonary embolism and in the detection of right ventricular dilatation in pulmonary embolism.