Going to provide a story but not advice, as this can be a serious condition. A disclaimer if you will..
I see a patient in the er every few weeks who presents with pvst, she has been having episodes her whole adult life, 20 years. Sometimes she will convert back to sinus rhythm on her own, other times she needs to visit the er and we treat her with Adenosine. The last time I saw her , her episode began when she sneezed.. yes.. a solitary sneeze.