Normal 1st Trimester Ultrasound
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- เผยแพร่เมื่อ 10 ก.ย. 2024
- In this lecture from our Ultrasound Grand Rounds, Dr. Matthew Tabbut, MD starts a series on OB ultrasound in the ED. He discusses the role of ultrasound in evaluating and managing pregnant patients in the ED and the components of the normal 1st trimester ultrasound.
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Your wisdom, even beyond ultrasound, is appreciated!
1) How do we know on a machine we've never used that u measure 1 or 2 cycles on M Mode?
2) at what week does CRL become phased out? I believe at week 12 from what I recall on most machines I've used.
(General/vascular tech here that's done only vascular for the last 5 yrs)
Sometimes it tells you in the calculator. Otherwise you measure between peaks and see what number you get and see if it makes sense. If you measure every beat on a machine that does every beat, your rate will be 2x. Same and opposite if you measure every 2 beats on a machine that measures every beat.