Monitoring that: (a) is of one of the following types of blood pressure: (i) central venous blood pressure; (ii) pulmonary arterial blood pressure; (iii) systemic arterial blood pressure; (iv) cardiac intracavity blood pressure; and (b) is conducted by indwelling catheter; and (c) is performed in association with the administration of anaesthesia for a procedure (the current procedure) and not as a service to which item 13876 applies; and (d) is performed, on a day, on a patient: (i) who is categorised as having a high risk of complications or develops during the current procedure either complications or a high risk of complications; and (ii) for whom monitoring of that type of blood pressure to which item 22012 applies has already been performed on the day in association with the administration of anaesthesia for another discrete procedure; and (e) has not previously been performed in association with the current procedure for that type of blood pressure (H) (3 basic units)