It is definitely preferable to avoid NSAID'S in this patient , as there is renal impairment . Paracetamol would be the safe drug to use for pain relief .
Please refer to the analgesic ladder. In renal impairment NSAIDs should be best avoided, but can be used in short occasional bursts, if some important event is around, or in the case of gout. However, paracetamol, paracetamol with codeine, tramadol, meptazinol and oral morphine all can be used. Additionally assess the patient for presence of neuropathic pain as well. If severe pain is a issue, it is best left to be managed by an experienced pain physician.
I agree with all your answers, i.e. NSAID´s should be avoided in renal impairment, as it can cause an acute deterioration of renal function. However, if paracetamol does not work and a NSAID is neces-sary, as in acute gouty arthritis, an experienced Nephrologist should be consulted.
We as Nephrologist may over emphasize the risk of worsening chronic kidney disease with NSAIDs. Two studies, the Physician's Health Study (JAMA) and the Precision trial (NEJM) have reported very low risk. In the latter, the risk was ~1%.