Deborah Carvalho Malta, Regina Tomie Ivata Bernal, Edmar Geraldo Ribeiro, Erica de Matos Reis Ferreira, Rafael Zambelli Pinto, Cimar Azeredo Pereira
Chronic back pain among Brazilian adults: data from the 2019 National Health Survey
Revista brasileira de epidemiologia = Brazilian journal of epidemiology
right ventricle left ventricle physically coupled interventricular septum therefore changes geometry mechanics one ventricle directly affect function treatment pediatric pulmonary arterial hypertension left ventricle often overlooked clinical focus primarily improving right ventricular function pediatric pulmonary arterial hypertension represents disease distinct adult pulmonary arterial hypertension based etiology survival rates aimed assess left ventricular torsion rate pediatric pulmonary arterial hypertension role right ventricular dysfunction cardiac magnetic resonance images tissue tagging prospectively acquired 18 pediatric pulmonary arterial hypertension class patients 17 control subjects known cardiopulmonary disease pulmonary arterial hypertension cohort underwent cardiac magnetic resonance within 48 hours clinically indicated right heart catheterization using right heart catheterization data computed single beat estimation right ventricular endsystolic elastance measure right ventricular contractility ventricular vascular coupling ratio endsystolic elastancearterial afterload left ventricular torsion rate quantified harmonic phase analysis tagged cardiac magnetic resonance images ventricular pulmonary pressures pulmonary vascular resistance derived right heart catheterization data right ventricular ejection fraction interventricular septum curvature derived cardiac magnetic resonance left ventricular torsion rate significantly reduced pulmonary arterial hypertension patients compared control subjects 140 061 vs 302 147 p 0001 decrease left ventricular torsion rate significantly correlated decrease right ventricular contractility endsystolic elastance r 061 p 0007 increase right ventricular systolic pressure pulmonary arterial hypertension kids r 054 p 0021 pulmonary arterial hypertension control subjects left ventricular torsion rate correlated right ventricular ejection fraction controls r 045 p 0034 pulmonary arterial hypertension r 057 p 0032 pulmonary arterial hypertension group interventricular septum curvature demonstrated strong direct relationship right ventricular systolic pressure r 07 p 0001 inversely left ventricular torsion rate r 057 p 0013 left ventricular torsion rate showed direct relationship ventricular vascular coupling ratio r 054 p 0021 inverse relationship mean pulmonary arterial pressure r 060 p 0008 pulmonary vascular resistance r 047 p 0049 conclude pediatric pulmonary arterial hypertension reduced right ventricular contractility associated decreased left ventricular torsion rate