BACKGROUND: The study was designed to compare RV morphological and functional parameters derived from conventional and myocardial deformation echocardiography in two instances of right heart pressure overload: pulmonary arterial hypertension (PAH) and pulmonary stenosis (PS). METHODS: Sixty-two individuals were included: 22 patients with pulmonary arterial hypertension (PAH), 19 patients with PS and 21 healthy individuals who served as a control group. All patients had clinical evaluation with 6-minute walking test, standard and two-dimensional strain echocardiography and B-type natriuretic peptide evaluation. RESULTS: At similar levels of pressure overload (RV systolic pressure, 88.2 ± 31.5 vs 73.4 ± 34.9 mm Hg; P = NS) the right ventricles of patients with PS were less dilated (RV end-diastolic diameter, 31.7 ± 3.7 vs 43.7 ± 10.5 mm; P < .001) and performed significantly better than those of patients with PAH (RV strain, -27.4 ± 5.8% vs 16.2 ± 7.9%; RV fractional area change, 51.1 ± 9.2% vs 29.1 ± 11.3%; P < .001). Although some of the RV functional parameters were comparable with those in healthy individuals, strain rate showed lower values, suggesting subclinical longitudinal dysfunction in patients with PS. Myocardial stress biomarkers were correlated with RV systolic pressure only in patients with PAH (r = 0.64, P = .03), not in those with PS (r = 0.22, P = .50). CONCLUSIONS: At similar levels of pressure overload, the right ventricle is less dilated and performs better in patients with PS compared with those with PAH.
BACKGROUND: The study was designed to compare RV morphological and functional parameters derived from conventional and myocardial deformation echocardiography in two instances of right heart pressure overload: pulmonary arterial hypertension (PAH) and pulmonary stenosis (PS). METHODS: Sixty-two individuals were included: 22 patients with pulmonary arterial hypertension (PAH), 19 patients with PS and 21 healthy individuals who served as a control group. All patients had clinical evaluation with 6-minute walking test, standard and two-dimensional strain echocardiography and B-type natriuretic peptide evaluation. RESULTS: At similar levels of pressure overload (RV systolic pressure, 88.2 ± 31.5 vs 73.4 ± 34.9 mm Hg; P = NS) the right ventricles of patients with PS were less dilated (RV end-diastolic diameter, 31.7 ± 3.7 vs 43.7 ± 10.5 mm; P < .001) and performed significantly better than those of patients with PAH (RV strain, -27.4 ± 5.8% vs 16.2 ± 7.9%; RV fractional area change, 51.1 ± 9.2% vs 29.1 ± 11.3%; P < .001). Although some of the RV functional parameters were comparable with those in healthy individuals, strain rate showed lower values, suggesting subclinical longitudinal dysfunction in patients with PS. Myocardial stress biomarkers were correlated with RV systolic pressure only in patients with PAH (r = 0.64, P = .03), not in those with PS (r = 0.22, P = .50). CONCLUSIONS: At similar levels of pressure overload, the right ventricle is less dilated and performs better in patients with PS compared with those with PAH.
Authors: Georgeann K Groh; Philip T Levy; Mark R Holland; Joshua J Murphy; Timothy J Sekarski; Craig L Myers; Diana P Hartman; Rebecca D Roiger; Gautam K Singh Journal: J Am Soc Echocardiogr Date: 2013-10-30 Impact factor: 5.251
Authors: Akylbek Sydykov; Argen Mamazhakypov; Aleksandar Petrovic; Djuro Kosanovic; Akpay S Sarybaev; Norbert Weissmann; Hossein A Ghofrani; Ralph T Schermuly Journal: Front Physiol Date: 2018-05-23 Impact factor: 4.566
Authors: Jian Wang; Yue Zhou; Qingjie Wang; Bowen Du; Yurong Wu; Qian Chen; Xi Zhang; Yanan Lu; Sun Chen; Kun Sun Journal: Front Cardiovasc Med Date: 2020-11-12
Authors: Mieke M P Driessen; Tim Leiner; Gertjan Tj Sieswerda; Arie P J van Dijk; Marco C Post; Mark K Friedberg; Luc Mertens; Pieter A Doevendans; Repke J Snijder; Erik H Hulzebos; Folkert J Meijboom Journal: PLoS One Date: 2018-10-24 Impact factor: 3.240