### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hi, My mom is 79 years old. She had an aortic valve replacement back in January, a full hip replacement in July, takes over 17 various meds including seroquel and quetiapine. She wants to be independant however I am becoming more and more concerned about her safety. Numerous times when I have gone to visit her I find pills either on her bed or her bedroom floor, pills I believe to be Rx not OTC. (Sorry, I m off topic...) Tonight s question is about heart rate.... Her heart rate is running at 136. What is a reasonable range for heart rate?

### output:

Hi, it is not normal heart frequency of 136 bpm. The normal range of the heart rate is 50 to 100 beats per minute. Above 100 bpm called tachycardia. There are various types of tachycardia including sinus tachycardia, multifocal atrial tachycardia, atrial fibrillation ... To identify which type of tachycardia is occurring with your mother is necessary to make an electrocardiogram during these tachycardia crises. Another way research is with the Holder 24 hours. Another thing we need to do is look for the cause of tachycardia. For example, if a sinus tachycardia, it may be due to psychomotor agitation and how your mother uses neuroleptic medications such as quetiapine, this type of tachycardia to be diagnosed. Another type of tachycardia is atrial fibrillation, which usually affects people over 75 and especially those who have heart disease, such as your mother. I suggest checking your cardiologist to complete the research and define how to treat your mother. Hope I have answered your question. If you have any further questions I will be happy to help you. Wish you good health.