正常分娩医学课件.ppt

1、DR. Emma,Normal Labor and Delivery,Natural delivery or C-section，this is a question.,2,Objectives,3,Determinate factors of labor,Three “Ps” Power Passage Passenger,4,Determinate factors of labor,5,Power: Contractions,Determinate factors of labor,Three “Ps” Power Passage Passenger,6,Determinate facto

2、rs of labor,7,Passageway,Soft tissues Cervix Vagina Perineum,8,Passageway,Soft tissues Cervix,Determinate factors of labor,9,Passageway,Pelvic Bones and Pelvimetry,Determinate factors of labor,10,Passageway,Pelvic Bones and Pelvimetry,Determinate factors of labor,11,Passageway,Pelvic Bones and Pelvi

3、metry,Determinate factors of labor,12,Passageway,Pelvic Bones and Pelvimetry,13,Determinate factors of labor,14,Passager,Size of passenger Number of passengers Position of passenger: Lie Presentation Attitude Position,Determinate factors of labor,15,Passager,Size of passenger Number of passengers Po

4、sition of passenger: Lie Presentation Attitude Position,Passenger: Lie,Passenger: Attitude,Passenger,Descent Fetal head journey through the pelvis until Crowning Flexion Fetal head tucks into chest Important so that smallest diameter of head presents May depend on pelvic type/shape,Passenger: Presen

5、tation,Passenger: Presentation,Passenger,Passenger: Position,The relationship of a site of the presenting part to the location on maternal pelvis Examples: LOA, ROP, RMT, LSA, etc. Asyncliticism: lateral deflection of the head with regards to the sagittal suture Anterior or posterior,Passenger: Posi

6、tion,The relationship of a site of the presenting part to the location on maternal pelvis Examples: LOA, ROP, RMT, LSA, etc. Asyncliticism: lateral deflection of the head with regards to the sagittal suture Anterior or posterior,Cardinal Movements of Labor,Descent Flexion Internal rotation Extension

7、 External rotation Expulsion,7/28/2020,24,Cardinal Movements of Labor,Descent Flexion Internal rotation Extension External rotation Expulsion,7/28/2020,25,Cardinal Movements of Labor,Descent Flexion Internal rotation Extension External rotation Expulsion,7/28/2020,26,Cardinal Movements of Labor,Desc

8、ent Flexion Internal rotation Extension External rotation Expulsion,7/28/2020,27,Cardinal Movements of Labor,Descent Flexion Internal rotation Extension External rotation Expulsion,7/28/2020,28,Cardinal Movements of Labor,Descent Flexion Internal rotation Extension External rotation Expulsion,7/28/2020,29,Cardinal Movements of Labor,Descent Flexion Internal rotation Extension External rotation Expulsion,7/28/2020,30,Cardinal Movements of Labor,Descent Flexion Internal rotation Extension External rot