<s>[INST] I have grade 1 diastolic dysfunction. I exercise regularly and am quite fit for 65 years. I eat well and drink a couple of glasses of wine daily. Why does my heart flutter with dizziness occasionally? Occasionally meaning 1-2 x daily or maybe never for a few days in a row. Otherwise I am very healthy. I wear a fentanyl 50 mcg patch daily and take oxycodone for break through pain 1-2 daily as needed, as a result of grade 2 spondylolisthesis at S1, L1-5; severe stenosis; and severe arthritis. I keep up the good fight though! Your comments are very appreciated. Thank you. [/INST] Hello! Welcome on Chat Doctor ! Your symptoms could be related to a cardiac arrhythmia. For this reason, I recommend performing an ECG Holder monitoring in order to exclude this possibility. Alcohol intake can trigger a cardiac arrhythmia too. For this reason, it would be necessary to avoid alcohol intake for some days and see if your symptoms improve. Some blood lab tests (complete blood count, blood electrolytes, thyroid hormone levels) are necessary too. You should discuss with your doctor on this test. Hope you will find this answer helpful! Best wishes,  </s>