What causes heart to skip a beat that leads to dizziness in teens?
Patient: I'm seventeen, and sometimes it feels like my heart seems to skip a beat or I can just feel it pushing really hard.  I take Pristiq and am tilt positive (my heart rate changes severly when I change positions.)  When my heart does this I get disoriented and dizzy and I sometimes feel like I can't breathe. It happens rarely to occasionally. Doctor: dear , you should make an Echocardiogram to check your Aorta and your heart functions ( systolic and diastolic ) , otherwise many causes can do it like :1- Anemia , can cause that escaped beat ( extrasystole ) .2- Anorexia and lack of sleep .3- psychic , especially if you are coming to an unusual event .