<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been experiencing occasional palpitations and a fluttering sensation in my chest. Its really worrying me.  <response>: It sounds like you might be experiencing premature ventricular contractions PVCs. In order to confirm this diagnosis, I would like to order an electrocardiogram, a radiographic imaging procedure, a complete blood count, ultrasonography, and echocardiography. Additionally, we will need to monitor your heart using a cardiac monitor and perform kidney function tests to rule out any underlying conditions that may be causing the PVCs. 