Conventional vs. advanced echocardiographic parameters for predicting fluid responsiveness in healthy dogs
Lucina, Stephany Buba; Muehlbauer, Eloisa; Silva, Vinícius Bentivóglio Costa; Silveira, Matheus Folgearini; Wolf, Marcela; Santos, Julio Pereira dos; Moreno, Juan Carlos Duque; Sousa, Marlos Gonçalves; Froes, Tilde Rodrigues.
Acta sci. vet. (Impr.);
50: Pub.1865-2022. ilus, tab, graf
Artigo
em Inglês
| VETINDEX
| ID: biblio-1458540
Resumo
Background: Volume replacement is considered an essential component in the treatment of critically ill patients, but excess f luid administration can be as harmful as the lack of fluid therapy. Therefore, the volume replacement is only beneficial in patients deemed to be fluid responsive, that is, when the individual has an increase in their stroke volume after administration of a volume challenge. This study aim to assess whether conventional and advanced echocardiographic parameters for assessing left ventricular systolic function are able to predict fluid responsiveness in healthy spontaneously breathing dogs. The hypothesis was that some of these parameters would differ between responsive and non-responsive animals and could be used as a complementary measure for assessment of fluid responsiveness. Materials, Methods & Results: A prospective study was carried out in which 22 client-owned healthy dogs over 1 year of age that presented to the Veterinary Medical Teaching Hospital for elective neutering procedure were included. All dogs underwent conventional and advanced echocardiographic examination to obtain the left ventricular internal diameter in diastole normalized (LVIDDn), left ventricular internal diameter in systole normalized (LVIDSn), ejection fraction (EF) and shortening fraction (SF) according to the Teischholz methodology, global longitudinal strain (GLS) and tissue motion annular displacement (TMAD). There parameters were evaluated before and after administration of a volume challenge with 10 mL/kg lactate ringer intravenously for 20 min. Based on the variation in aortic velocity integral time, 31.82% of dogs were considered responsive and 68.18% were non-responsive to the volume challenge. For advanced echocardiography, TMAD indexed by body weight (mm/kg) > 0.89 (P = 0.004) and body surface area (mm/m2) >18.9 (P = 0.004) after volume challenge had the best area...
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