Hypothesis
Resuscitating ICU patients with 6% hydroxyethyl starch instead of saline would be at least as safe and improve survival.
What failed
Among 7,000 ICU patients, 90-day mortality was 18.0% with starch vs 17.0% with saline (RR 1.06, P=0.26), and more starch patients needed renal-replacement therapy (7.0% vs 5.8%, P=0.04).
Broken assumption
A synthetic colloid resuscitates ICU patients at least as safely as saline and improves survival.
Why
No survival advantage, and a signal of kidney harm: more renal-replacement therapy and significantly more adverse events with starch.
From the published paper: Myburgh JA, Finfer S, Bellomo R, et al. (CHEST). N Engl J Med, 2012. NCT00935168 ↗