Doctors abbreviate many words that they use when writing prescriptions. That is one reason that prescriptions appear to the uninitiated to be harder to read than they really are.
I would use "sz."
To abbreviate recoimmendation, you would use rec.
There is not a proper way to abbreviate the word 'consideration'. If you really do need to abbreviate the word, you could use the abbreviation of 'cons'.
How can you use the word infectious in a sentence
Misc. You would use a small m if it is not at the beginning of a sentence.
Since that is not a word I would not attempt to use it in a sentence.
You just did use the word colonize in a sentence.
Some use 'hse'.
how would you use the word finished in a command sentence
Use the whole word for clarity.
1. you did just use that word in a sentence 2. if a doctor would use the word tumor in a sentence they would probably say "we need to remove the tumor from this persons body."
You could use Rx as an abbreviation