Conversation: The conversation between human and AI assistant.
[|Human|] Dear Sir,I had a successful 4 bypass operation during  February 2007.  My BMI is 26. How do I get my weight down to a BMI of 25. My age is 72.During sleep I have periods where I dont breath for a while.  I dont smoke and consume zero alcohol. Only water. I am a vegetarian. I keep fit by going for long walks and cyclng.Thank you. Egon Kramer
[|AI|]  Hello Ego! Welcome on Chat Doctor! I understand your concern and would explain that the troubles with breathing during the night could indicate possible sleep apnea. You should know that this disorder increases your cardio-vascular risk and the risk for hypertension. That is why it is important to get diagnosed on time and get the proper treatment for this disorder. For this reason, I would recommend consulting with your attending physician for a careful physical exam and some tests to investigate for possible sleep apnea: - a chest X-ray study and pulmonary function tests for obstruction- a resting ECG- an arterial blood gas analysis- a multi sleep latency test. Regarding your BMI, I do not find it concerning. I would just encourage you to continue on your healthy diet and keep being active. Consulting with a dietitian could help lose some pounds. Hope to have been helpful! Wishing good health,