April 2025; papers of the month

Emergency medicine research requires rigorous critical appraisal to distinguish between actionable evidence and clinical bias. The HINTS examination for posterior circulation strokes demonstrates high sensitivity but demands expert-level training, limiting its consistent application in busy emergency departments. Similarly, pre-hospital resuscitative thoracotomy for traumatic cardiac arrest proves feasible in mature systems, yet success remains strictly time-dependent, favoring patients with cardiac tamponade who receive rapid intervention within a 15-minute window. Furthermore, recent data indicates that the risk of acute kidney injury from intravenous contrast is significantly lower than previously assumed. These findings align with updated clinical guidelines, which advocate for proceeding with urgent contrast-enhanced imaging without delaying for renal function testing or prophylactic fluid administration, regardless of pre-existing chronic kidney disease or patient age.