Conversation: The conversation between human and AI assistant.
[|Human|] I was doing garden work in very hot weather and I started to feel exhausted.  Came in and took my pulse.  It was 137.  I am female and 70 yrs old.  Is this rate harmful?  I put cold water on my face and laid down with my feet up.  What is a healthy non-resting heart rate?
[|AI|]  Hello and welcome to ChatDoctorI have read your query hope this will alphabet rate of more than 100 beats per min is called tachycardia. Yes in your age it could prove to be harmful as it can precipitate myocardial ischemia. Tachycardia has got many causes and vigorous physical activity is one of those. I would suggest you to avoid working in hot weather as it promotes fluid loss via sweating as a result heart rate increases to compensate that also physical activity increase heart rate. There is not to worry much at the moment however next time when you visit your GP do have an ECG. Thanks Chat Doctor.