51. PM430 Right ventricular assessment by echocardiography in patients with schistosomotic pulmonary artery hypertension
- Author
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Oscar Francisco Sanchez Osella, Carlos Antonio da Mota Silveira, Angela Bandeira, Jose M. Del-Castillo, and Eugenio Soares de Albuquerque
- Subjects
Community and Home Care ,medicine.medical_specialty ,Epidemiology ,business.industry ,Healthy subjects ,Regurgitation (circulation) ,medicine.anatomical_structure ,Ventricle ,Internal medicine ,medicine.artery ,Rv function ,Pulmonary artery ,Myocardial strain ,Cardiology ,Medicine ,In patient ,Cardiology and Cardiovascular Medicine ,business ,End-systolic volume - Abstract
Introduction: In the right ventricle (RV), unlike the left ventricle (LV), there is a predominance of longitudinal fibers that are necessary to empty systolic volume against the low pulmonary resistance. The normal longitudinal strain of the RV is -30 to -35% and transversal (radial) strain 20 to 25%. As pulmonary artery hypertension (PAH) develops RV dysfunction, systolic tricuspid regurgitation may be inadequate to estimate the pulmonary pressure.The pulmonary flow acceleration time, TAPSE and tissue Doppler of the tricuspid annulus may infer, but not quantify RV function. Objectives: The aim of this work is to assess with speckle tracking RV strain in patients with PAH and compare the results with data obtained in normal subjects. Methods: Assess RV function parameters (fractional areas, TAPSE and tricuspid regurgitation gradient). Determine longitudinal and transverse strain from the apical view in septum and free wall in patients with PAH and in healthy subjects. Material: 30 PAH patients, mean age 56+/-11 years, 21 male. Results: Among PAH patients and normal subjects, fractional areas were 22% and 46% and TAPSE 1.6 and 2.5 cm. Tricuspid regurgitation gradient was 57 and 19 mmHg. Longitudinal strain -14% and -29% and transverse strain 37% and 22% respectively. Conclusion: Patients with PAH modify the pattern of myocardial strain, with high transversal deformation, probably due to the RV adaptation to the high pressure.Conventional parameters to assess RV function may be masked by the systolic dysfunction of this camera. Disclosure of Interest: None Declared
- Published
- 2014
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