I would revise the bolded to read there is at least one paper suggesting association with increased mortality. Here’s a separate study which associated a bedside echo in patients with undifferentiated shock with improved mortality, less AKI:
Limited echocardiography–guided therapy in subacute shock is associated with change in management and improved outcomes
The need to associate a diagnostic study with outcomes has always confused me. If you interpret any diagnostic study inaccurately, it isn’t going to help the patient. We don’t do the same for ECG’s, CBC’s, or chest radiography, why is ultrasound different? I suppose if you want to justify the purchase of a machine that costs tens of thousands of dollars to a group.
My bias is towards using ultrasound in certain situations, specifically undifferentiated shock, as I trained in a program with a solid division. At this point in my training (critical care) I use echo more frequently than any other study, and find it changes my management frequently. That said, I have spent a lot of time learning image acquisition and interpretation, since it is more frequently pertinent in the ICU.
I empathize with those who can’t get consultants to do anything without a “formal” and don’t begrudge them the subsequent lack of interest. It doesn’t make sense to do a study if you know your consultant is going to request another one.