https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2821168

A team of researchers set out to change that by developing a comprehensive algorithm.The process involved a multidisciplinary panel of 11 expertss with extensive experience in managing urinary retention. These experts evaluated about 100 clinical scenarios to create an initial flow sheet. The algorithm was then refined through interviews with 33 frontline clinicians from various specialties.So, what does this new algorithm recommend? Let's break it down:First, bladder scanning is the preferred method for evaluating patients with urinary retention symptoms. It's also recommended for asymptomatic patients who haven't voided in 3 hours

.If a bladder scanner isn't available, the algorithm suggests using either an intermittent straight catheter (ISC) or an indwelling urinary catheter (IUC), with a preference for ISC initially

.Now, let's talk about when to catheterize based on bladder scanner volumes. For symptomatic patients, catheterization is recommended when the volume is 300 mL or more. For asymptomatic patients, the threshold is higher at 500 mL or more

.Lastly, the algorithm provides guidance on when to transition from intermittent to indwelling catheterization. If a patient needs an ISC more frequently than every 4 hours, or if their output is 500 mL or more every 4 hours, it's appropriate to switch to an IUC