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Tuesday, November 29, 2005 

Super-sized needles

I suppose there are stories about obesity every day, but this one caught my attention after just posting about watching "Supersize Me:"

Fatter rear ends are causing many drug injections to miss their mark, requiring longer needles to reach buttock muscle, researchers said on Monday.

Standard-sized needles failed to reach the buttock muscle in 23 out of 25 women whose rears were examined after what was supposed to be an intramuscular injection of a drug.

Two-thirds of the 50 patients in the study did not receive the full dosage of the drug, which instead lodged in the fat tissue of their buttocks, researchers from The Adelaide and Meath Hospital in Dublin said in a presentation to the annual meeting of the Radiological Society of North America.

Besides patients receiving less than the correct drug dosage, medications that remain lodged in fat can cause infection or irritation, researchers Victoria Chan said.

23 out of 25 women?? That seems too high.

I have a love/hate relationship with stories like this. Love 'em because I enjoy reading about any new findings, but hate 'em because, since this apparently was just a conference abstract, I can't comment further on the methods. Was this some kind of population that was more likely to be obese anyway? Even if you figure that 65% of the population is overweight or obese, they found that 92% of the women in their population had too much ass fat to be able to use a regular needle. It could very well be simply a sample size effect--25 ain't much of a population to generalize from. But still, it's baffling to think that only 8% of those patients received the correct dosage of drug. Shouldn't this have been noticed before?

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About me

  • I'm Tara C. Smith
  • From Iowa, United States
  • I'm a mom and a scientist, your basic stressed-out, wanna-have-it-all-and-do-it-all Gen Xer. Recently transplanted from Ohio to Iowa, I've spent most of my life in the midwest (with 4 years of college spent out east in "soda" territory). My main interest, and the subject of my research, is infectious disease: how does the microbe cause illness? What makes one strain nasty, and another "avirulent?" Are the latter really not causing any disease, or could some of those be possible for the development of chronic disease years down the road? Additionally, I've spent a lot of time discussing the value of teaching evolution, and educating others about "intelligent design" and other forms of creationism. My interest in history of science and medicine is also useful as a way to tie all of the above interests together. [Disclaimer: the views here are solely my own, and do not represent my employer, my spouse, that guy who's always sitting by the fountain when I come into work, or anyone else with whom I may be remotely affiliated.]
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