Several PVCs in a row becomes a form of ventricular tachycardia (VT), which is a potentially fatal abnormal heart rhythm. Overall it has been seen that the symptom felt most by patients experiencing a PVC is the mere perception of a skipped heartbeat.
mire. n. 1. An area of wet, soggy, muddy ground; a bog.2. Deep slimy soil or mud. 3. A disadvantageous or difficult condition or situation: the mire of poverty. v. mired, mirÂ·ing, mires. v. tr.ire. n. 1. An area of wet, soggy, muddy ground; a bog.
The noun sere also exists, though it isn't common; its meanings are a dry period or condition  or withered vegetation.. There are also three unrelated nouns spelled sere. They refer to a claw or talon; a series of ecological communities; and a Hebrew vowel point.