How to get URL link on X (Twitter) App
Aggregate sensitivity of FAST for all intra-abdominal injuries is low. Specificity is high. Remember though, the FAST was designed to look for FF, not all injuries. So if the injury is not associated with FF, the FAST will likely not see it. 

Nerve blocks allow for the management of acute pain or painful procedures in the ED. Decreases need for opiates and sedations. Ultrasound guided vs blind decreases inadvertent vascular or nerve injection and allows targeted depot of anesthetic agent around the nerve. 

Goal and benefit of POCUS is to rapidly narrow the differential diagnosis through asking and answering defined clinical questions.