A veterinary advice column reassured a dog owner that an irregular heartbeat in a relaxed dog may be a normal respiratory sinus arrhythmia, not heart disease. This breathing-linked rhythm change is ...

Q: I adopted a pit bull who had lost one ear in the fighting ring, so I named him van Gogh. He is a healthy, sweet, gentle ...

The diagnosis is sinus rhythm with interpolated premature ventricular complexes, in a trigeminal pattern, with retrograde concealed conduction. The rhythm is irregular, but there is a repeating ...

The correct diagnosis is sinus rhythm with premature ventricular contractions and ventricular parasystole (Figure 2). Figure 2. Courtesy of Philip J. Podrid, MD. The rhythm is irregular. There are ...

Premature ventricular contraction (PVC) is a type of abnormal heartbeat, or arrhythmia. It happens when the heartbeat begins in the lower, rather than the upper, heart chambers. This creates an ...