According to traditional Chinese medicine, at the age of 80, you must have insufficient kidney and yang energy. You can exercise and exercise. If you want a normal recovery, you can try traditional Chinese medicine health qigong such as Tai Chi and Baduanjin.
Not sure what OH is? Are you saying that you are aroused or not? Coolidge Syndrome is something where you have renewed sexual interest when a new partner is introduced into the picture. You have no prostate you say? Erectile dysfunction can be a side effect of prostate removal. Are you saying that you became aroused enough to masturbate with your home made pump and that is what you are curious about? I'm just trying to understand what exactly you are asking about.