NAVLE（北美执业兽医考题）Day 620

While conducting a routine physical on a 4 year old male intact bulldog, an irregular heart rhythm with a slow rate that is markedly slower on expiration is audible during auscultation. What should be done next？

在为一只4岁未绝育的雄性斗牛犬进行常规体检时，在听诊过程中可以听到心率不齐、心动过缓，在他呼气时尤其明显。接下来需要做什么？