POTD: A Couple ED Hacks

For today’s POTD, I wanted to share a couple hacks I’ve collected from others over my residency that may make Mondays a bit more manageable. 


#1 Stockinette (and yes, I too thought there was a “g” in there) Arm Sling


Have you ever been working a busy Peds ED shift and come across a young’n with an injury requiring a sling? You walk around looking for a tiny human sized sling for the 3 year old and feel like it’s an issue that we don’t have anything small enough. Spoiler alert: the real issue is that no 2 year old is going to keep their arm still BUT you should still do your best to at least try and properly immobilize/sling them.


Thanks to Eric Lee who taught me this, we can actually fashion a tiny human sized sling using stockinette!


Just cut a long piece of stockinette of width that will be tight enough around the little arm to give it a good hugging feeling. The length should be about 2.5-3 length of the entire arm (shoulder to hand). Once you’ve measured this, cut a slit into one side of the stockinette that extends a little less than half the length of the tube. Simply place the child’s arm inside the stockinette tube with the cut side towards the head and this will nestle just below the axilla, wrap the cut part around the child’s trapezius area where you will tie a knot at the nape of the neck or just on the unaffected shoulder area which connects the part with the arm inside. 


See this website for another way to macgyver a teeny sling - this one seemingly provides better immobilization: https://www.chp.edu/our-services/plastic-surgery/resources/brachial-plexus

Bonus: this is adorable - especially on babies ❤ 

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#2 Fluorescein Eye Drops


Imagine being a patient coming into the ED with excruciating eye pain and being told that someone is going to stick a piece of paper into your already searing eyeball and then look at it with a fancy named lamp that turns out is actually just a black light. 


There are a couple ways to effectively and less painfully deliver the fluorescein dye needed for a Wood’s lamp exam.


First, you can simply use the tetracaine drops and drop them onto the fluorescein strip and let that liquid fall into the patient’s eye. This can sometimes be challenging given that they often have a hard time keeping their eyelids open and you’ll need both your hands to use this technique.


Second, you can use tetracaine and simply place the fluorescein strip directly into the eye just under the bottom eyelid. This works too but again, it may be sensitive and there is a chance there is a foreign body hiding under that lid that may be more irritated by the paper you placed there.


Lastly (and this is my personal favorite), grab a 3 or 5ml syringe, a flush and a fluorescein strip. Open the empty syringe and remove the plunger. Take off the cap from the flush and place it on the empty, plunger-less syringe. Rip off the end of the fluorescein strip containing the dye and place it in the cylinder of the empty syringe. Squirt 1-2cc of the flush into the empty syringe. You’ll notice the fluid will become fluorescent yellow. Replace the plunger (you’ll have to flip it over and remove the cap on the other side in order to advance it) and voila! You now have fluorescein eye drops! I like this because it also allows you to use it again in the case that you need to repeat your exam and is generally less uncomfortable than putting a piece of paper in someone’s eye.


I hope these simple hacks aid you on your quest to conquer Peds and Fasttrack! Let me know if you have any other ED hacks you think are worth sharing, I know we all get inventive and it’s fun to hear what people have found works well!

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VOTW: Subchorionic Hemorrhage

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Case: A 26 yoF who was 5 weeks pregnant presented to the ED after being pushed out of a parked car by her partner. She complained of wrist pain but requested an US to check on her pregnancy. She denied vaginal bleeding or pelvic pain. She had an IUP that was confirmed via US before the assault.

A transvaginal US was performed (video 1) that showed a subchorionic hemorrhage (SCH) > 50% of the gestational sac. Notebe careful not to confuse a large SCH with another gestational sac (image 1). 

Image 1

A SCH typically occurs within the first 20 weeks of gestation and is when blood accumulates between the uterine wall and the chorionic membrane (image 2). While many are found incidentally, some patient's may present with vaginal bleeding.

(What is the chorion? It is a membrane that surrounds the developing fetus along with the amnion. It eventually forms the fetal placenta and provides nourishment and protection for the developing embryo.)

On ultrasound, a SCH will typically appear as a crescentic collection with an elevation of the chorion. The echotexture can vary from hyperechoic (acute) to hypoechoic (chronic) based on the duration of the SCH. A SCH is considered large if it is > 50% of the size of the gestational sac. While many resolve during pregnancy, a large SCH can increase the risk of placental abruption, preterm labor, and miscarriage. These patients therefore require close OB follow-up for serial ultrasounds.

Case conclusion: the patient’s workup was negative, she was educated about the found SCH, and given OB follow-up later that week. 

Happy scanning!

Ariella Cohen, M.D.

 

References:

https://radiopaedia.org/articles/subchorionic-haemorrhage-2?lang=us

https://my.clevelandclinic.org/health/symptoms/23511-subchorionic-hematoma


VOTW: Big Flex

77 yoF presented to the ED with left middle finger pain, swelling, and discoloration of ~1 week proximally (image 1). 

Image 1: digit swelling and abscess

She was tachycardic and febrile on arrival. Physical exam revealed ¾ Kanavel signs (flexion at rest, pain with passive extension, fusiform swelling of the digit). Ultrasound was performed using a water bath (image 2).

Image 2: water bath technique

POCUS findings concerning for flexor tenosynovitis include a hypoechoic peritendunous effusion and a thickened synovial sheath that may be hyperemic.

Video 1/Image 3: shows fluid surrounding the flexor tendon in short axis.

Image 3: Short axis of flexor tendon with surrounding fluid

Video 2/Image 4: shows a long axis view of the finger with fluid in the pre-tendon area and surrounding edema.

Image 4: Long axis of flexor tendon with abscess/edema

Case conclusion: orthopedics was called and performed a bedside I&D. They were able to express “copious amounts of purulent fluid” but did not appreciate pus along the tendon sheath itself. The patient was admitted for IV abx and is getting daily wound checks by orthopedics.

Note: While the Kanavel signs and ultrasound are useful diagnostic aids, they are non-specific and should not be used as a rule-out test. Remember that many inflammatory processes will often create edema that appears hypoechoic on ultrasound.

Happy scanning!

- Ariella Cohen

References:

https://www.emdocs.net/ultrasound-probe-pocus-for-flexor-tenosynovitis/

https://www.researchgate.net/figure/Ultrasound-appearance-of-normal-flexor-tendon-sheath-and-tenosynovitis-a-Normal_fig1_51104450