Immediate post-anaesthesia recovery 2013: Association of Anaesthetists of Great Britain and Ireland.

1. After general, epidural or spinal anaesthesia, all patients should be recovered in a specially designated area (henceforth 'post-anaesthesia care unit', PACU) that complies with the standards and recommendations described in this document. 2. The anaesthetist must formally hand over the care of a patient to an appropriately trained and registered PACU practitioner. 3. Agreed, written criteria for discharge of patients from the PACU to the ward should be in place in all units. 4. An effective emergency call system must be in place in every PACU and tested regularly. 5. No fewer than two staff (of whom at least one must be a registered practitioner) should be present when there is a patient in a PACU who does not fulfil the criteria for discharge to the ward. 6. All registered practitioners should be appropriately trained in accordance with the standards and competencies detailed in the UK National Core Competencies for Post Anaesthesia Care. 7. All patients must be observed on a one-to-one basis by an anaesthetist or registered PACU practitioner until they have regained control of their airway, have stable cardiovascular and respiratory systems and are awake and able to communicate. 8. All patients with tracheal tubes in place in a PACU should be monitored with continuous capnography. The removal of tracheal tubes is the responsibility of the anaesthetist. 9. There should be a specially designated area for the recovery of children that is appropriately equipped and staffed. 10. All standards and recommendations described in this document should be applied to all areas in which patients recover after anaesthesia, to include those anaesthetics given for obstetric, cardiology, imaging and dental procedures, and in psychiatric units and community hospitals. Only registered PACU practitioners who are familiar with these areas should be allocated to recover patients in them as and when required. 11. Patients' dignity and privacy should be respected at all times but patients' safety must always be the primary concern. When critically ill patients are managed in a PACU because of bed shortages, the primary responsibility for the patient lies with the hospital's critical care team. The standard of nursing and medical care should be equal to that in the hospital's critical care units. Audit and critical incident reporting systems should be in place in all PACUs.

The pre-operative ECG in day surgery: a habit?

As the population presenting for day-case surgery and anaesthesia increases, so does the challenge of adequate pre-operative assessment. Although an electrocardiogram is frequently performed, its value in day-case surgery remains unproven. One thousand, one hundred and eighty-five patients presenting for day-case surgery were assessed. One hundred and fifty-four (13%) were referred for electrocardiogram according to well-recognised criteria for the prediction of coronary artery disease. They were read independently by the anaesthetist responsible for the case and by an experienced cardiologist. A significant abnormality was noted in 26% of electrocardiograms, most frequently in patients referred with hypertension. There was a good correlation between the reports of the anaesthetist and cardiologist. Only 20% of those patients with an abnormal electrocardiogram had their surgery postponed. No adverse events occurred in patients proceeding to surgery despite the abnormalities. We conclude that a resting electrocardiogram is of limited value in risk stratification of patients undergoing day-case surgery.

Temazepam absorption in patients before surgery.

We have compared the rates of absorption and efficacies of temazepam 30 mg in elixir and capsule formulations in 100 patients before surgery. Both formulations provided anxiolysis and sedation, but there was wide variation in plasma concentrations of temazepam between individuals and between formulations. The presence or absence of anxiety did not influence the absorption of the preparations. It is suggested that plasma concentrations in excess of 200 ng ml-1 are required for sedation and anxiolysis, and that this may be achieved more reliably using the elixir formulation.

Measurement of FEV1 and FVC. Comparison of a pocket spirometer with the Vitalograph.

The performance of a pocket spirometer was compared with that of the Vitalograph to assess the extent of agreement between the instruments and the repeatability of measurements with each instrument. Both instruments showed a similar level of accuracy when measurements were repeated and in the estimation of forced vital capacity, but there was a mean difference of 201 ml in measurements of forced expiratory volume in one second, for which the Vitalograph gave the larger reading.

Comparison of sedation with temazepam by mouth and diazemuls i.v. for dental surgery. Variability in absorption may influence clinical effect.

Temazepam elixir 30 mg by mouth was compared with i.v. Diazemuls titrated to a maximum dose of 20 mg in a double-blind study of 50 patients undergoing elective minor oral surgery. The treatments produced a similar reduction in anxiety score and similar degrees of patient relaxation and co-operation. The diazepam group had greater amnesia during surgery, but also showed significant slowing of reaction time at the time of discharge. Patients given temazepam elixir showed wide variations in plasma concentrations. Patients with low plasma temazepam concentrations at the time of surgery showed no significant reduction in anxiety scores.

Radiographic study of intercostal nerve blockade in healthy volunteers.

The spread of solutions injected to the intercostal space was studied in 10 healthy volunteers. Up to 20 ml of a 50:50 mixture of local anaesthetic solution and a radiopaque dye was injected through a modified extradural catheter placed in an intercostal space at the posterior angle of the rib. Radiographic films demonstrated spread by an extrapleural route into adjacent intercostal spaces and this was confirmed by the occurrence of analgesia in the corresponding dermatomes. The relevance of these results to clinical practice is discussed.