Ekg showed qtc of 474. pcp said not to worry about prolonged qt syndrome unless over 480.should i be concerned?stress test next week.previous ekgs ok

Borderline: Your corrected QT interval is borderline, but in medicine, we say, "never buy one of anything." Get several EKGs and see what your QTc is on all of them. Also check your potassium and magnesium since low levels prolong the QTu interval and cause the appearance of a long QT. Finally, if it is prolonged, simply avoid other meds that make it worse. Under 500 ms is mild.