I am sorry to hear that you have been diagnosed with SVT (supra-ventricular tachycardia) by your cardiologist
, and that you recently underwent a sleep study and were awaken by the technical who then called an emergency medicine physician
because you went into a high heart rate. I am happy to give you some information about what I think might have been going on, but ultimately I am going to recommend that you make an appointment with a sleep medicine specialist
. They will be able to take more of a medical history, sleep history, and examine you to get an accurate diagnosis. When a sleep study is done, it is typically trying to examine the different stages of sleep to determine any abnormalities that may be present. It also evaluates whether there are any desaturations (drops in blood oxygen level), or any changes in your heart rate. It is possible that you have sleep apnea (a disorder that causes drops in your blood oxygen level), and that this bounced you into SVT. This however should have shown up on the sleep study. This is another reason why I would recommend that a sleep medicine specialist go over your sleep study to read it. They will be able to tell you if you should repeat it or not.