Question: Are PVC’s considered an arrhythmia disorder and are they dangerous? Premature Ventricular Contractions (PVCs) are an arrhythmia and relatively common. Some people are very sensitive and feel every abnormality, others are blissfully unaware of them. PVCs may indicate the presence of underlying heart disease. If a patient has NO significant underlying heart disease, PVCs are probably not dangerous. Most …