Hi, I am from Colombia. I am a webApps developer and mechatronic engineer, I perfectly understand your project and its scope, I have the perfect solution for your proposal, I know about arduino, rpi and server and database development, I think I can be the best option for your project . I will be delighted to work on this proposal, it seems to me a great project and it would be an honor for me to do my bit, I really hope your answer!
about sending sms to relatives we can use the rpi connected to the Internet and a sms sending service, can reduce operating costs.
give me the opportunity of this work you will not regret it, I can be of great help with my knowledge, I have previously developed similar telemedicine products, as research at my university I have developed systems for sending electrocardiogram data to databases with arduino and rpi