Clinical audit of the long-term use of oral ketamine for management of chronic pain

Questionnaires will be administered: Brief Pain Inventory, Depression and Anxiety Stress Scale, Pain Catastrophizing Scale and Pain Self-efficacy Questionnaire. Patients will also complete a check list of side effects from ketamine treatment. Demographic data will be extracted from Dr Salmons case notes, as well as other analgesia prescribed and patients perception of effects of treatment. Questionnaire responses will be compared with baseline questionnaires (PCS, PSEC, BPI and DASS ) completed at initial consultation when the patients first consults with Dr Salmon whenever that appointment occurred. The length of time each patients have been taking will vary, however patients consenting to the study are at least two years post commencement of ketamine therapy. The participating patients are only required to complete one set of questionnaires in addition to the initial (first consultation) questionnaires which is standard care. Patients are approached when attending clinic for follow-up appointments , or contacted by telephone.