Conjugate of the diagonal is ‘a’ cm, obstetric conjugate will be:
Correct Answer: a-2 cm
Description: Ans. is d, i.e. (a -2) cmRef. Williams Obs. 24/e, p 32Obstetric conjugate cannot be measured clinically but can be diagnosed by substracting 1.5-2 cm from diagonal conjugate. Hence if diagonal conjugate is 'a' cm obstetric conjugate will be (a -2) cmObstetric conjugate normally measures 10 cm or more Q.The pelvic inlet is considered to be contracted, if obstetric conjugate is less than 10 cm. Q
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Gynaecology & Obstetrics
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