Master Canadian Nursing Abbreviations 2026 – All-in-One Guide to Excel in Nursing Exams!

'Pre-op' is an abbreviation for pre-operative, meaning before surgery or a medical procedure. Option A, 'after operation', is incorrect because pre-op is referring to something done before the operation, rather than after. Option B, 'preliminary opinion', is incorrect because it does not fit the context of a medical procedure. Option D, 'prior to operation', is incorrect because it is essentially the same as option C and does not provide an abbreviation. Therefore, C is the best and most relevant answer.