Identifying systems delays in assessment, diagnosis, and operative management for testicular torsion in a single-payer health-care system

Abstract

Testicular torsion (TT) is a common pediatric urologic emergency. Management of TT is time sensitiveand often confirmed on scrotal Doppler ultrasound (DUS). Acquiring DUS, however, can result in delays in the management of TT, affecting testicular salvage rates. The objective of this study is to identify delays in the assessment and diagnosis for patients presenting with TT to a Canadian academic hospital using patient flow analysis. A retrospective review was performed for patients presenting to the emergency department (ED) who received a scrotal DUS to rule out possible TT between 2012 and 2017. The primary outcome measured cycle-time measurements (median time) between points along the clinical flow pathway for a patient with suspected TT. The secondary outcome assessed diagnostic sensitivity, specificity, positive predictive value (PPV), and negative predictive value(NPV) of standard scrotal DUS components (Doppler flow, arterial waveform, heterogeneous echotexture). A total of 609 patients presented with an acute scrotum warranting a scrotal DUS to rule out TT; of which, 46 underwent scrotal exploration. Testicular salvage rate was 82.6% in the series (38 testes salvaged, 8 required orchiectomy). Median time from symptomonset to ED presentation for patients with possible TT was 4h. After triage, a median of 79.8min was required for ED physician assessment and an additional 48min for scrotal DUS to be performed. Absence of Doppler flow on scrotal DUS had a 97.4% PPV for diagnosing TT confirmed during scrotal exploration. Almost 4h of in-ED time is required from triage to surgical intervention for potential TT at the institution. One area of delay is the time needed to conduct a scrotal DUS (48-128min; Fig.1). This represents an area of opportunity for patient flow optimization through the use of standardized clinical pathways and diagnostic adjuncts, such as point-of-care ultrasound. This study is limited in its retrospective nature and does not include patients with overt signs of TT who underwent surgical detorsion without need for scrotal DUS. Patient flow delays to surgical intervention for patients with TT representa preventable cause of orchiectomy in young men. This study identifies intervention points in patient-care flow pathways where delays to surgical intervention can be potentially reduced by up to 2h. The findings support the need for further studies into the optimization of patient flow and management protocols to reduce delays in the diagnosis and management of TT.