ultrasound gel allergy- Daughter reports mom had allergy to US/ Dr. Mueller responds
Last Updated: 2/25/2012
|KY jelly ingredients: |
Purified Water, Glycerin, Hydroxyethylcellulose, Chlorhexidine Gluconate, Gluconolactone, Methylparaben, Sodium Hydroxide
unfortunately, rare allergic reactions / contact dermatitis has been reported even with KY jelly or with Mineral Oil so either can be tried as an alternative when there is allergy to usual ultarsound gel (propylene glyol) but there is no certainty of avoiding reactions with the alternatives.
this is reminiscent of the case of my dvt patient who had a bad reaction to typical gel elsewhere and was so averse to using gel again he risked his life, since we found a massive fem-pop dvt after we had someone run to the store and get mineral oil....
Submitted by rich mueller - 2/25/2012
|Very interesting....We have never seen this at our clinic.
Submitted by Dr. Bush - 2/25/2012
|A few years ago, my mom had an ultrasound on her thyroid. Within hours, her chest and neck (wherever the u/s gel was applied) turned fire red and swollen. The only other place affected was two of her fingers she remembered getting the gel on them while wiping it off of her chest after the test. A day or two later she was so uncomfortable she had to go to a walk-in clinic, where she was prescribed oral cortisone. They told her she could possibly have been allergic to the u/s gel, and that in the future she should buy and bring K-Y Jelly should she ever need another u/s. When she went back to the u/s office a few days later (still very red but much improved) she was told it is IMPOSSIBLE to be allergic to the gel. She has had about three u/s in the years since, and has always brought along K-Y Jelly. Each time, the technician has poo-poohed the possiblility of an allergy but have used the K-Y to (I believe) humor her. It is nice to see confirmation that such an allergy actually exists. If only other docs and techs would understand this so she doesn’t have to endure the eye-rolling every time!
Submitted by B - 2/25/2012
encountered my very first patient with an allergy to u/s gel in the past. unilateral acute leg pain and swelling.
turned out to have massive fem-pop dvt from common femoral down to the gastrocs !
the pearl here is for such a very rare patient, use Mineral Oil
more watery but imaging was superb, and some on the internet actually prefer its imaging to standard gel.....
ultrasound gel made of: propylene glycol
mineral oil made of: a liquid by-product of the distillation of petroleum to produce gasoline and other petroleum-based products from crude oil. A mineral oil in this sense is a transparent, colorless oil composed mainly of alkanes and cyclic paraffins, related to petroleum jelly (also known as white petrolatum).