Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/128096
Title: Right Ventricle Strain Assessed by 2-Dimensional Speckle Tracking Echocardiography (2D-STE) to Evaluate Pulmonary Hypertension in Dogs with Dirofilaria immitis
Authors: Matos Rivero, Jorge Isidoro 
García Rodríguez, Sara Nieves 
Costa Rodríguez, Noelia 
Caro Vadillo,Alicia 
Carretón Gómez, Elena 
Montoya Alonso, José Alberto 
UNESCO Clasification: 310904 Medicina interna
240112 Parasitología animal
Keywords: Dirofilaria immitis
heartworm
echocardiography
speckle tracking
strain, et al
Issue Date: 2023
Project: Dirofilariosis animal y humana
Journal: Animals 
Abstract: Echocardiographic assessment of the right ventricle is helpful for analysing the pathophysiology of heartworm disease and detecting pulmonary hypertension (PH) in dogs. In veterinary cardiology, the study of myocardial deformation using two-dimensional speckle tracking (2D-STE) echocardioraphy has become increasingly acknowledged as useful for quantifying right ventricular function. The aim of this study was to evaluate the usefulness of myocardial deformation strain of the right ventricular free wall (FWS), global deformation strain of the right ventricle, including the interventricular septum (GS), and tissue motion annular displacement of the tricuspid valve (TMAD) in a cohort of dogs with heartworm (Dirofilaria immitis) disease and to determine cut-off values for detecting the presence of PH. Out of the 93 dogs tested, 71% were diagnosed with heartworm infection. PH was identified in 41% of the infected dogs following the American College of Veterinary Internal Medicine (ACVIM) guidelines, based on the peak tricuspid regurgitation velocity to calculate the tricuspid regurgitation pressure gradi- ent (TRPG), while other routine measurements were used, including the right pulmonary artery disten- sibility index (RPADi). The 2D-STE mode measurements were determined using Right Ventricular Au- tomated Function Imaging (RV AFI®) software. The statistical analysis showed significant differences in the studied parameters among dogs with and without PH. Additionally, sensitivity (sen) and specificity (sp) cut-off values were obtained (GS ≥ −21.25%, sen 96%, sp 86.4%; FWS ≥ −21.95%, sen 92.56%, sp 95.5%; TMAD ≤ 0.85 cm, sen 70.4%, sp 83.3%). These results demonstrated that GS, FWS, and TMAD could be used as supplementary and alternative variables to conventional echocardiographic measurements when detecting PH in dogs with heartworm disease.
URI: http://hdl.handle.net/10553/128096
ISSN: 2076-2615
DOI: 10.3390/ani14010026
Source: Animals[ISSN2076-2615], v.14 (Diciembre 2023)
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