Conversation: The conversation between human and AI assistant.
[|Human|] I have started to wake up in the middle of the night with my heart racing. I had a monitor fitted last year for 24 hrs and told I could have an ablation which I refused as put my palpatations down to stress but I am not feeling stressed now. It only seems to happen at night and I can take some deep breaths to slow it back down but wonder why it is waking me up? Is your heart racing dangerous? Thank you
[|AI|]  Hello, I would explain that your symptoms could be related to a sleep disorder or cardiac arrhythmia. For this reason, I would recommend performing an ambulatory 24-48 hours ECG monitoring and a polysomnogram in order to investigate for the above-mentioned causes.  In the meantime, I would recommend trying a PPI (omeprazole, pantoprazole, etc.) before sleeping and see if it helps prevent these episodes. In such a case, you should consider possible gastroesophageal reflux as a possible cause underlying your complaints.  Hope I have answered your query. Let me know if I can assist you further.