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Objective: Since the first World Symposium on Pulmonary Hypertension (WSPH; Geneva, 1973), pulmonary hypertension (PH) has been defined as a mean pulmonary artery pressure (mPAP) ≥25 mm Hg measured at right heart catheterization (RHC) while at rest in the supine position. At the 6th WSPH congress (Nice, 2018), a new proposal was presented defining pre-capillary PH as mPAP >20 mm Hg, with pulmonary arterial wedge pressure (PAWP) <15 mm Hg, and pulmonary vascular resistance (PVR) >3 WU. The aim of this study was to investigate the impact of the new definition of PH on the number of pre-capillary PH patients., Methods: The results of RHC performed with various clinical indications between 2017 and 2018 were analyzed. The 2015 European Society of Cardiology (ESC)/European Respiratory Society (ERS) and the 6th WSPH congress PH definitions were used to identify PH patients., Results: Fifty-eight RHC procedures were performed in our hospital in a 1-year period. Most were performed with a suspicion of PH (n=52). The remainder (n=6) were performed with indications of valvular heart disease or left heart disease. There were 40 females (69%) and 18 males (31%). The mean age was 53.3±16.6 years. The RHC results revealed a mean PAP of 36.4±16.4 mm Hg, PAWP of 12.6±3.9 mm Hg, and PVR of 4.9±4.4 WU. Forty-three of 58 patients (74.1%) were classified as pre-capillary PH according to the ESC/ERS PH guideline, whereas 50 of 58 patients (86.2%) had pre-capillary PH according to the new WSPH definition., Conclusion: The results of this study indicated that the impact of the new definition of PH on the number of pre-capillary PH patients identified was greater than the predicted <10%.

Objectives: Risk stratification in acute coronary syndromes is an important diagnostic tool guiding future therapy. We evaluated the correlation between the AHCPR (Agency for Health Care Policy and Research) risk classification and angiographic morphology in patients with non-ST-segment elevation acute coronary syndrome (NSTE-ACS)., Study Design: A total of 163 patients hospitalized with the diagnosis of NSTE-ACS were prospectively enrolled. All the patients underwent AHCPR risk analysis followed by coronary angiography. Based on the AHCPR system, the patients were classified as low (n=25, mean age 55±10 years), intermediate (n=55, mean age 58±10 years), and high (n=83, mean age 61±11 years) risk groups., Results: The three groups were similar with regard to gender, age, and coronary heart disease risk factors (p>0.05). Comparison of the high-risk group with intermediate+low-risk group with regard to lesion morphology showed significantly higher rates of complex lesions (31.9% vs. 4.0%, p=0.001), total occlusion (23.2% vs. 0%, p=0.001), and intracoronary thrombosis (13% vs. 2%, p=0.02) in the high-risk group. In univariate analysis, high risk was significantly associated with the presence of complex lesion, total occlusion, intracoronary thrombosis, and TIMI flow