Expression: to change dressing

I went to hospital to change dressing for the last time today.

Does it make sense?

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It makes sense, but is not quite grammatical. Try: to change the/my dressing
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Your sentence is correct. Why all the doubts? Are you writing the sentences and you are not sure of your English :slight_smile: ?

Another way of saying it is:

I went to hospital to have my dressing changed for the last time today.