###Human: Can Nitroglycerin patch prolong life of an elderly person? ###Assistant: Hello. As you mentioned, your mother has deafness and blindness, you did not mention why she is using Nitrogen glycerine patches. It is only useful when the patient is suffering from heart disease with recurrent anginal chest pain (heart attack), but it is used to reduce BP also. It is for symptomatic uses, related only with the condition, cannot use without indication. If you will give me details about her diabetic or hypertension status and current BP, pulse rate, then I can help you in a better way.