Ten symptomatic dogs naturally infected by Leishmania infantum were examined by means of doppler echocardiography in order to identify the presence of pulmonary hypertension (HP). The presence of 2-dimensional features of PH and the presence of tricuspid and/or pulmonic valve regurgitation for pulmonary artery pressure quantification were investigated and standard echo-doppler variables (AT, AT/ET, Tei) were calculated. None of the examined dogs showed 2-dimensional features of PH. In only one dog, having also mitral endocardiosis, HP was diagnosed by tricuspid jet velocity. Echo-doppler variables resulted not indicative of HP in all dogs except one having a Tei index value predictive of HP, but normal AT and AT/ET. Our preliminary data do not support the presence of HP in canine leishmaniasis, anyway study population need to be enlarged to give conclusions.
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