I had an ER visit yesterday night after having a higher heart rate than usual (172 bpm vs 155 bpm) and some PACs during jogging. Turned out just to be stress and anxiety. I'm exercising 4 times/week, 2x60 minutes jogging, 2x30 minutes running and 2x30 minutes weightlifting, and my overall physical condition level is starting to get fairly good. My BP, even at the ER, was 115/75 (it's usually lower, 105/65 or so).
I've been taking SSRI (maximal dose) to treat my anxiety, so I was happy they registered an EKG, just to make sure the medication had not prolonged my QT. It had not, my QTc was unchanged from earlier, at 388 msec, however, my QT dispersion was increased from 15 to 34 msec.
My previous EKGs did almost always show LVH for some weird reason (sV1+rV5 3,6-3,7 mV) though no LAD (the QRS axis is 60 degrees). Echo two years ago revealed a normal LV mass, wall thickness (10 mm) and function (EF 70%). On this EKG, my "LVH" was gone (sV1+rV5 3,2 mV), which I found strange, after fairly intense exercise the last months and significantly lower resting heart rate (50-52 bpm). The doctor said it could be caused by larger chest muscles (more space between the electrodes and the heart).
1. Does the increased QT dispersion have any significance? Could 200 mg Zoloft be to blame?
2. Why do you think my signs of LVH are gone?
My EKG was normal. I've always had slightly wide QRS complexes (100-ish msec) but no bundle branch blocks, so I guess this haven't got any significance. All other intervals and waveforms are normal.
Thank you in advance.