Happy New Year!! We hope you've all had a great Christmas and New Year and that you managed to get some well earned time off over the festive period.  2019 saw us publish more insights from lead authors of the latest and most influential studies in Emergency Medicine and Critical Care, and we're really excited to say that we'll be delivering you even more in 2020 with some excellent RCTs, international guidelines and much, much more! This month we've got 3 papers to challenge practice across a wide array of practice. We start off with a paper that evaluates if we can change our d-dimer thresholds in suspected PE's and how many unnecessary work ups and scans that might decrease. Next, following on from our previous Hypothermia podcast, we have a look at a paper which looks at the best rewarming rates in patients with hypothermia, which may change your rewarming strategies.... Finally we have a think about our use of CT scanning in patients who gain a ROSC after cardiac arrest, and consider what benefit full body CT scanning might bring. Thanks to all of you for your support with the podcast over the last year and we look forward to bringing you some great stuff in 2020! Enjoy Simon & Rob