Yet another person discharged back into the community with no support. Sadly shortytree this is an all too common theme. As a partner I can only imagine the anxiety you have right now. Checking SATs every hour is extremely proactive but I fear this may cause further stress to you and your partner if you see a low reading. Thus perpetuating the feeling that things are unstable.
Go with how your partner feels and don't hesitate to call the GP, 111 or 999 if you think things are escalating out of your control. You shouldn't be left feeling abandoned, and the attitude that's there nothing more they can do because it's the natural progression of COPD is to my mind, a wholly irresponsible way of communicating this disease to a patient and their family.
There's plenty that can be done in the community to help you and your partner. You just need to be signposted to the right places. Ask questions, see what's available in your local area. Start with your GP practice and go from there. Pick up the phone and speak to the duty doctor at your surgery today if need be. Just don't sit and feel under so much pressure to take sole responsibility of your partner's care. I've been there and it's 'bleeping' scary!
A good piece of advice I had from a paramedic once was 'just call us, that's what we're here for. It doesn't mean we'll whisk you off to hospital. We'll check you over and make a decision based on the facts'.
Of course we don't want to waste valuable resources calling an ambulance or paramedic unnecessarily, but frankly If you've been left with no other support then what alternative do you have!? There are a number of community based respiratory services, but in many instances you have to ask or you won't get. Google A.R.A.S. Team (Acute Respiratory Assessment Service) in your area, and see what comes up. There should be a team in your locale, or something similar.
You quite clearly want reassurance and that is completely understandable. There is nothing quite as frightening as being left to manage a person (a loved one especially) who cannot breathe. It's hard not to panic yourself, and that cannot be underestimated. I have been there, and I would not want to sit back and not advise you to speak up if you are overwhelmed.
I felt completely out of my depth at times when having to make an assessment as to whether my Mum needed intervention. I didn't want to get it wrong and miss something, but equally I didn't want to put Mum through unnecessary poking and prodding and a trip into hospital. It's so difficult to interpret because when someone feels breathless, panic often ensues and things can accelerate out of hand.
You are quite clearly a huge support to your partner, so get educated on the support available to you sooner rather than later. I promise you'll feel better for it. Don't suffer in silence. Ask for help.....x
edited to add:
I've read your previous recent thread and notice your partner does have a consultant, so perhaps contact their secretary in the first instance to discuss your concerns. Let the consultant decide how to move forward. If you partner's COPD is severe, your local hospice may be able to help in offering some therapeutic services to make life more comfortable.
If you can encourage your partner to engage in all possible avenues of help it would be a positive step forward. The patient needs to want the help, as much as you want it for them (if that makes sense?).
Thinking of you both