<prompt> All are risk factors for shoulder dystocia except:Maternal diabetesTrisomy 18Maternal obesityPost term pregnancy  <response>: Ans. B. Trisomy 18a. Increased risk of shoulder dystocia is seen in the following conditions:b. Fetal macrosomiac. Prior history of shoulder dystociad. Maternal obesitye. Maternal DMGestational diabetesf. Post term pregnancyg. Prolonged 2nd stage of laborh. Instrumental deliveryi. Anencephalic fetusj. Trisomy 18 is associated with IUGR, therefore no increased risk for shoulder dystocia. 