Saturday, January 11, 2020

Vitamin C and "Fictitious Hyperglycemia"

I’m plenty fired up for the VITAMINS trial that’s going to be published on the 17th. That’s the first large RCT looking at Vitamin C, Thiamine, and Hydrocortisone in Septic Shock. If the trial turns out to be positive, which I really hope it does, then we will really need to know about this limitation as our utilization will definitely increase worldwide.

From burn data and providing high dose vitamin C in that population, and I’m taking about doses >50gm/day, they have noted a cross reactivity in certain point of care blood glucose monitors where the ascorbic acid, due to having to do with glucose having a similar molecular structure to ascorbic acid with six-carbon molecules.

This seems to confuse the POC machine and the readings could be falsely >30%. Ultimately, those designing the studies for 1.5gm IV q6 hours have known this and have been checking to see if there’s a difference between the lab numbers and the POC numbers. As of the time of publication, they found no significant difference. We still need to keep this in mind, though. In the burn population someone died of iatrogenic hypoglycemia 😔. A 🎩 tip to the authors and those who answered the questions.

-EJ



Link to Website

Flannery AH, Bastin MLT, Magee CA, Bensadoun ES. Vitamin C in sepsis: when it seems too sweet, it might (literally) be. Chest. 2017;152(2):450–1.


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