Diastolic dysfunction and heart rate
2 1/2-year-old spayed cat. Required butorphenol sedation. It had a mild effect. Heart rate rarely went below 200bpm. Cardiac measures were WNL. Mitral inflow was evaluated with pulsed Doppler, with the sweep speed increased to discern the E and A waves. The heart rate noted on the ECG is not correct on that picture. IVRT…