I recently had an ECG and my heart rate is 39 and I had no p waves, but what does no p waves mean ? I have also been getting shortness of breath, I have told my Doctor but info is bery slow, I am only 29 and very worried now. I m just relaying what the cardiologist said in her reoprt and my heart rate is regularly at 39-41bpm this is a fact. I am indeed in the UK, and the only medication I am on is Lanzoprozole, I have had deficulties breathing almost as though I have a small child sat on my chest, and I have for a few years now been almost constantly tired and I would fall asleep driving on the bus and even walking at one point.