Does mitrovalve prolapse effect low pulse rate?

Although Mitral Valve Prolapse usually causes rapid heart rate (tachycardia) rather than slower heart rate (bradycardia), that can in fact happen as well. See your cardiologist about medication. This writer has MVP and supraventricular tachycardia, very rapid heart rate, and takes Metoprolol Tartrate for it, but for your Bradycardia, you'd need a very different medication, or your physician may recommend a demand pacemaker, which speeds up your heart rate if it falls below a certain level.