<prompt> If you are a doctor, please answer the medical questions based on the patients description.I am 44, When sleeping I often wake up because my heart is racing and pounding in my ears, I am not certain what a heart attach feels like but this scares me. My husband says as of late that I do not sleep well, I toss and turn and yell out in my sleep almost daily.  <response>: Hello, I would explain that your symptoms could be related to gastroesophageal reflux or a sleep disorder including sleep apnea. For this reason, I would first recommend taking an antacid or PPI omeprazole, pantoprazole, etc. before sleep. If this does not help, I would recommend performing a polysomnogram and an ambulatory 24-48 hours ECG monitoring. Hope I have answered your query. Let me know if I can assist you further. Take care Chat Doctor. 