“There is no mortality benefit for that.” How many times have you heard that? The implication is usually the same: that intervention is a waste of time. A smart, evidence-based clinician wouldn’t bother with it. But, what does it actually mean if there is no proven mortality benefit?
Saline vs. balanced solutions has been a topic of ongoing debate. Two fresh studies will illuminate this: the SMART and SALT-ED trials. This post summarizes current knowledge, beginning with physiology and working our way to fresh trials. Reason #1. There is no physiologic rationale for using “normal” saline (NS). Saline is a hypertonic, acidotic fluid […]
Skillful use of BiPAP and high-flow nasal cannula (HFNC) can avoid intubation and improve outcomes. However, there isn’t comprehensive evidence about the nitty-gritty details of these techniques. In this post I will use my opinions to fill some gaps in the evidence. Noninvasive respiratory support remains more of an art than a science, perhaps a dark art at that.
Escalation-deescalation There are roughly two strategies for adjusting the intensity of treatment: Titrated strategy: Treatment intensity is adjusted to match the severity of the disease. Escalation-deescalation strategy: Treatment intensity is increased rapidly to exceed disease severity and gain control of the disease. After the patient improves, treatment intensity is reduced. The best strategy depends on […]
Did this woman have ARDS? According to the Berlin Definition shown below, she had moderately severe ARDS while on conventional low tidal-volume ventilation (P/F ratio of 166). However, she didn’t meet the definition of ARDS while she was APRV, a few hours earlier (P/F ratio 475). Her overall clinical course with prompt recovery and weaning off oxygen is inconsistent with the natural history of ARDS.