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ABC., imagem cardiovasc ; 29(3): 84-91, jul.-set. 2016. ilus
Article in Portuguese | LILACS | ID: lil-789846

ABSTRACT

Introdução: A esquistossomose, parasitose tropical, pode provocar hipertensão pulmonar grave (HAPE), que leva a remodelamento e disfunção do ventrículo direito (VD), que pode ser detectada pela diminuição da excursão sistólica do anel tricúspide (TAPSE) e da variação de áreas do VD. No VD normal, rico em fibras longitudinais, predomina o strain longitudinal, sendo menor o strain transversal. Objetivo: Avaliar, com ecocardiografia convencional e com strain bidimensional do VD, pacientes portadores de HAPE, comparando os resultados com dados clínicos, hemodinâmicos e com parâmetros ecocardiográficos obtidos em controles sadios. Material: Trinta e dois pacientes com HAPE, média etária de 45 ± 12 anos. Vinte e três controles sadios, média etária de 48 ± 18 anos.Métodos: Foram avaliados os parâmetros de função do VD (variação de áreas e TAPSE) e o gradiente de refluxo tricúspide. Foi determinado o strain longitudinal e transversal do VD em pacientes com HAPE e em controles sadios. Resultados: Entre os pacientes com HAPE e os controles sadios, a variação das áreas foi, respectivamente, 28% e 46% (p = 0,0001), o TAPSE, 1,9 cm e 2,2 cm (p = 0,02); gradiente de regurgitação tricúspide, 76 mmHg e 28 mmHg (p = 0,0001); deformação longitudinal da parede lateral do VD -22% e -37% (p = 0,0001); e deformação transversal 39% e 21% (p = 0,001). Conclusão: Pacientes com HAPE modificaram o padrão de deformação do VD, com aumento do strain transversal, provavelmente por adaptação do VD à sobrecarga pressórica. O ecocardiograma convencional também foi útil paraavaliar a função do VD na HAPE.


Introduction: Schistosomiasis is a tropical parasitic disease may cause severe pulmonary hypertension (SIPH), which leads to right ventricular (RV) remodeling and dysfunction, which can be detected by decreased tricuspid annular plane systolic excursion (TAPSE) and variation of RV areas. In normal RV, rich in longitudinal fibers, longitudinal strain prevails, and transverse strain is smaller. Objective: To assess, using conventional echocardiography and two-dimensional RV strain, patients with SIPH, comparing the results with clinical and hemodynamic data and echocardiographic parameters obtained from healthy controls. Material: Thirty-two patients with SIPH, mean age 45 ± 12 years old. Twenty-three healthy controls, mean age 48 ± 18 years old. Methods: RV function parameters (range of areas and TAPSE) and the tricuspid regurgitation gradient were evaluated. Longitudinal and transverse RV strain RV were determined in patients with SIPH and in healthy controls. Results: Among SIPH patients and healthy controls, the variation of areas was 28% and 46%, respectively (p = 0.0001), TAPSE was 1.9 cm and 2.2 cm (p = 0.02); tricuspid regurgitation gradient was 76 mmHg and 28 mmHg (p = 0.0001); RV sidewall longitudinal strain -22% and -37%(p = 0.0001); and transverse strain of 39% and 21% (p = 0.001). Conclusion: Patients with SIPH changed the RV strain pattern with increased transverse strain, probably due to RV adaptation to pressure overload. Conventional echocardiography was also useful to assess RV function in SIPH.


Subject(s)
Humans , Male , Female , Middle Aged , Ventricular Dysfunction, Right/diagnosis , Ventricular Dysfunction, Right/therapy , Echocardiography/methods , Schistosomiasis mansoni/diagnosis , Schistosomiasis mansoni/therapy , Hypertension, Pulmonary/diagnosis , Hypertension, Pulmonary/therapy , Patients , Analysis of Variance , Heart Atria , Parasitic Diseases/complications , Parasitic Diseases/diagnosis , Prospective Studies , Ventricular Remodeling , Heart Ventricles
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