IVC Distensibility Index vs Collapsibility Index: Using the Correct Index
RebelEM
FEBRUARY 24, 2025
Well, the established cutoff for the distensibility index is 18%. A cutoff of 18% has a positive predictive value (PPV) of 92% and NPV of 90% for fluid responsiveness. 14,15 You might use a passive leg raise, which carries a roughly 250cc fluid challenge. Why does it matter? Am J Respir Crit Care Med. Jan 2019; PMID: 30138573.
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