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Background  Early identification of systolic dysfunction in dogs with systemic inflammatory response syndrome (SIRS) potentially could improve the outcome and decrease mortality.    Objective  To compare 2‐dimensional speckle tracking (2D‐STE) with 2‐dimensional (2D) and M‐mode echocardiography in the evaluation of systolic function in SIRS dogs.    Animals  Seventeen SIRS and 17 healthy dogs.    Methods  Prospective observational case‐control study. Each dog underwent physical examination, conventional echocardiography, 2D‐STE, and C‐reactive protein measurement.    Results  Dogs with SIRS had lower 2D‐STE ejection fraction (X4D‐EF; 44 ± 8 versus 53 ± 8;  P  = .003), endocardial global longitudinal strain (ENDO‐G‐Long‐St; −14.6 ± 3.2 versus −18.5 ± 4.1;  P  = .003), and normalized left ventricular diameter in diastole (1.38 ± 0.25 versus 1.54 ± 0.17;  P  = .04) and systole (0.85 ± 0.18 versus 0.97 ± 0.11;  P  = .03) as compared to healthy dogs. Simpson method of disks (SMOD) right parasternal EF (55 ± 9 versus 60 ± 6;  P  = .07) and end systolic volume index (ESVI; 23 ± 10 versus 21 ± 6;  P  = .61), SMOD left apical EF (59 ± 9 versus 59 ± 6;  P  = .87) and ESVI (20 ± 8 versus 22 ± 6;  P  = .25), fractional shortening (FS; 34 ± 5 versus 33 ± 4;  P  = .39), M‐mode EF (64 ± 7 versus 62 ± 5;  P  = .35), and ESVI (23 ± 11 versus 30 ± 9;  P  = .06) were not significantly different between SIRS and control group, respectively.    Conclusion and Clinical Importance  Speckle tracking X4D‐EF and ENDO‐G‐Long‐St are more sensitive than 2D and M‐Mode FS, EF, and ESVI in detecting systolic impairment in dogs with SIRS.

journal of veterinary internal medicine

Use of 2‐dimensional speckle‐tracking echocardiography to assess left ventricular systolic function in dogs with systemic inflammatory response syndrome