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Q. |
Perforation tends to occur earliest when an ectopic pregnancy is located in which portion of fallopian tube ? |
A. | Isthmic |
B. | Interstitial |
C. | Ampullary |
D. | Infundibular |
E. | No difference |
Answer» A. Isthmic | |
Explanation: If the implantation is located in the narrow isthmic portion of the tube(the narrowest part), it will rupture very early, within 6 to 8 weeks; the distensible interstitial portion may be able to retain the pregnancy up to 14 weeks of gestation, while the ampulla is the widest portion. |
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