Which of the following is the engaging diameter in the fetus in left occiput anterior (LOA) position:: (A) Suboccipito - bregmatic, (B) Mento-veical, (C) Sub-Mento bregmatic, (D) Sterno-Bregmatic
Answer is A. Position of Head Presentation Engaging diameter Well flexed head Veex presentation Sub-Occipito bregmatic, 9.5 cms Deflexed head Sinciput presentation Occipito-frontal , 11.5cms Paial extended Brow presentation Mento veex, 14 cms Fully extended head Face presentation Submentobregmatic ,9.5cms or submentoveical 10 cms