M-mode echocardiography measurements of healthy Brazilian random bred cats

Abstract

To determine the M-mode echocardiography reference measurements for Brazilian random bred cats in Rio de Janeiro, Brazil, cats presenting for routine care were examined by M-mode echocardiography. Animals with free wall values of the left ventricle and/or interventricular septum above 5 mm were not included. A total of 125 cats with were included in the study. The correlation of the body score condition (BSC) with the echocardiography measurements was positive for left ventricle wall in systole (LVWs) and left ventricular wall in diastole (LVWd). The LVWd values of BSCs 3 and 4 were different; and those of BSCs 3 and 5 were also different. The LVWs values of BSCs 3 and 5 were different. The correlated effect between BSC and the echocardiography measurements was true for the left atrium, left atrium/aorta ratio, ventricular septum in diastole, ventricular septum in systole, LVWs, LVWd, left ventricle in diastole, left ventricle in systole, ejection fraction and shortening fraction. The M-mode echocardiography evaluation of cats is impacted by the animal's body mass; therefore, the BSC must be taken into consideration when interpreting echocardiography measurements.

Echocardiographic assessment of felines sedated with dexmedetomidine or xylazine associated with butorphanol

“…In the studies of Ward et al (2012) the value was 62 + 1.8% for adult cats (1 to 3 years old). Silva et al (2019) carried out a study with 125 mixed-breed cats of varying ages and observed an ejection fraction of around 85.74% ± 7.25 (coefficient of variation 8%). Although there was no proven correlation of age with ejection fraction, it was observed in the present study that 6-month-old cats have values closer to that of adult cats.…”