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Gynaecology & Obstetrics General ba4a3d15

Which does not cross placenta:

A
Heparin
B
Morphine
C
Naloxone
D
Warfarin
High-Yield Explanation
Heparin does not cross placenta and is safe during pregnancy. It is the drug of choice for the management and prophylaxis of venous thromboembolism during pregnancy.

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