ObjectiveTo describe the organisational demands on staff when arranging interhospital transfers (IHTs) from an ED. MethodProspective observational study of IHTs from three non-tertiary hospital EDs in the Perth metropolitan area. Data were collected over 14 consecutive days commencing 20 January, 26 March and 6 July 2010 for each respective site. Outcome measures were the time taken for transfer acceptance, the number of telephone calls required and the perceived degree of difficulty to arrange a transfer. ResultsWe examined 229 (70%) of the 325 IHTs conducted during the study period. Transfers took 1-11 telephone calls to arrange (median 2). More calls were required for urgent (median 4, IQR 3.5-9.4, n = 69) than non-urgent IHTs (median 3, IQR 2-4, n = 160, P = 0.04). Four or more calls were required in 23.5% of cases (n = 54) with 20 (9%) of these involving critically ill patients. The median time to transfer acceptance was similar for urgent (10min, IQR 4-24, n = 69) and non-urgent IHTs (10min, IQR 5-23, P = 0.48, n = 155). A post-hoc analysis describing IHTs that took over 1h to organise, showed that urgent transfers took 155min (IQR 132-213) compared with 120min for non-urgent IHTs (IQR 79-157; P = 0.07). Arranging an IHT was perceived to be challenging in 6% of cases with the clarity of decision-making, receiving staff understanding of the limitations of referral hospital services and the effect of delays of prime importance. ConclusionWhile most IHTs are straightforward, critically ill transfers require considerable time, effort and teamwork to arrange.