Most likely because linear probes are only good for about 4 cm of depth, due to the high frequency relatively low penetration. Past 4 cm, anatomy becomes cloudy and difficult to identify. Most likely if you are doing an LP on an obese patient, the depth can vary form 6 cm to 13 cm, in some cases. If you have a skinny patient, linear probe would be fine, but most of the time you can actually see the spinous process and your landmarks, and wouldn't need an ultrasound. Hope that helps.
Great video! What are some reasons why even after I mark the correct site between the 2 spinous processes, I still don't get CSF after advancing the needle? I either hit bone or it gets stuck in something very tight (probably muscle like erector spinae)
I really hope I don't have to have this done (might have MS). Don't have a fear of needles but seeing that needle go into the spine makes me nauseous. The ultrasound gives a little relief.
![Lp. Сердце Вселенной #60 РОЖДЕНИЕ ЛОЛОЛОШКИ [Финал] • Майнкрафт](http://i.ytimg.com/vi/YoR0pAV9FVQ/mqdefault.jpg)
One of the best explanations of US guidance I've seen for those of us that trained on landmarks.
Why did you use the Curvilinear Probe, why not the linear probe. I would recommend a linear probe.
Most likely because linear probes are only good for about 4 cm of depth, due to the high frequency relatively low penetration. Past 4 cm, anatomy becomes cloudy and difficult to identify. Most likely if you are doing an LP on an obese patient, the depth can vary form 6 cm to 13 cm, in some cases. If you have a skinny patient, linear probe would be fine, but most of the time you can actually see the spinous process and your landmarks, and wouldn't need an ultrasound. Hope that helps.
This is not US- guided LP. This is US asisted.
Excelent presentation!
Very nicely explained, still a challenge...thanks!
Great video! What are some reasons why even after I mark the correct site between the 2 spinous processes, I still don't get CSF after advancing the needle? I either hit bone or it gets stuck in something very tight (probably muscle like erector spinae)
Direct the needle cranially rather perpendicular to the skin
Thank you for this great video
I really hope I don't have to have this done (might have MS). Don't have a fear of needles but seeing that needle go into the spine makes me nauseous. The ultrasound gives a little relief.
Great
Thank you this is great
Thanks
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