Hi Dr - I have mild ostial narrowing and abnormal ecg (inverted t waves). I have had stress test and next plan is stress echo as my heart skips beat regularly, often when I am resting. In addition I have bouts of excessive yawning during the day (Consultant puts this down to my sleep apnea), which usually combines with severe tightening in my throat and expiratory wheezing in my throat - not my lungs, frequently followed by heart skipping beats. Could you suggest what might be causing my symptoms? Many thanks