Midodrine is an oral agent which functions as an alpha-1 agonist. It has been used in a variety of situations including autonomic dysfunction, hepatorenal syndrome, and dialysis-induced hypotension. Over the past few years there has been increasing interest in using midodrine to facilitate weaning off vasopressors.
Post-extubation HFNC has helped us aggressively liberate patients from mechanical ventilation while simultaneously reducing our reintubation rate. One remaining question is determining which patients benefit from this. My practice has generally been to use HFNC in patients felt to be at higher risk for reintubation. A fresh RCT in JAMA will revise this.
Make no mistake, I’m not very fond of phenlephrine. I rarely use it (mostly for hypotensive atrial fibrillation). However, understanding phenylephrine is a prerequisite to understanding related vasopressors, particularly midodrine and norepinephrine.
A satisfactory clinical definition of sepsis has been eluding us since the ancient Greeks first coined the term. Current definitions of sepsis attempt to achieve two goals: to provide a rapid screening test to detect sepsis and to render a definitive diagnosis of sepsis. However, it remains unclear whether any definition can achieve this.
This is one of my favorite diagnoses. When first encountered, it may seem bewildering and difficult to treat (1). Indeed, standard ACLS algorithms often fail with these patients. However, once understood, this disorder is easily treated and patients typically improve rapidly.