• Ameya S Kamat and Andrew Parker.
• a Department of Neurosurgery , Wellington Regional Hospital , Wellington South, Wellington , New Zealand.
• Br J Neurosurg. 2015 Jan 1; 29 (4): 565-8.

IntroductionEffective utilisation of operating theatre time is an important issue in neurosurgery. There is a commonly held belief amongst surgeons that throughput of theatre is decreasing secondary to worsening perioperative delays. The aim of this paper is to explore some of the factors that lead to delays in the perioperative period by determining whether there has been a trend in the increasing length of case time over a fifteen-year period.Materials And MethodsCase notes of all elective patients who consented for surgery between January 1998 and the end of 2012 were reviewed. Only patients who underwent elective surgery were included. Variables recorded included transit time from the ward to theatre, anaesthetic time, surgical time and time spent in recovery. These were compared over the 15-year period to look for apparent trends.ResultsThe total number of patients who consented for elective surgery at our institution between January 1998 and December 2012 was 6760. The mean anaesthetic time considering all operations performed was 43 mins each over the 15-year period. Anaesthetic time was deemed to be trending upwards from 1998 where the mean time was 27 -60 mins in December 2012, thus reflecting an increase of 33 mins. The mean surgical times over the 15-year period were 131 mins. However in 1998, mean surgical time was 127 mins compared with 133 mins in 2012.Discussion And ConclusionFor the operations analysed, anaesthetic time seems to be increasing and has effectively doubled over a 15-year period. Surgical time and non-clinical time are shown to be virtually constant. This delays the overall theatre list and increases the cancellation rate. For compensating this, changes need to be made when allocating resources to both elective and emergency theatres. Staff recruitment needs to be assessed and internal audits need to be conducted within institutions to analyse ways to optimise the throughput of an operation theatre. If these principles are not adhered to, it will have a negative impact as our populations, and hence our case loads increase to instrumental levels. This will in turn have a negative impact on health workers and patients alike.

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