Accepted
at 4:28 p.m. Sep, 21, 2025
by
Ahmed7
Bulk Suggestion
Bulk ID:
andrewmathias8/09.16.25-11:13PM
Author:
andrewmathias8
Rationale for change
shuffle - inspired by the fact that I just did a UWorld quesiton that presented the results of a quad screen, and the labs were not listed in the same order as this card, so it threw me off
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After
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Extra
- Decreased hCG and low-to-normal inhibin A help differentiate trisomy 18 from trisomy 21 (increased hCG and inhibin A)
- In Edwards syndrome, Every prenatal screening marker Decreases

- In Edwards syndrome, Every prenatal screening marker Decreases
| Trisomy | Patau (13) | Edward (18) | Down (21) |
|---|---|---|---|
| First Trimester | |||
| β-hCG | ↓ | ↓ | ↑ |
| PAPP-A | ↓ | ↓ | ↓ |
| Second Trimester | |||
| β-hCG | ↔ | ↓ | ↑ |
| Inhibin A | ↔ | ↔ or ↓ | ↑ |
| α-fetoprotein (AFP) | ↔ | ↓ | ↓ |
| Estriol | ↔ | ↓ | ↓ |

Lecture Notes
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Missed Questions
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Pathoma
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Boards and Beyond
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First Aid


Sketchy




Watch Edwards & Patau Syndromes




Watch Edwards & Patau Syndromes
Sketchy 2



Watch Prenatal Screening & Diagnosis



Watch Prenatal Screening & Diagnosis
Sketchy Extra
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Picmonic
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Pixorize


Review Edwards Syndrome (Trisomy 18)


Review Edwards Syndrome (Trisomy 18)
Physeo
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OME
Additional Resources
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Atlas:
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Atlas:
One by one
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