Kushtagi P
Department of Obstetrics and Gynaecology, Kasturba Medical College and Hospital, Manipal.
J Indian Med Assoc. 1995 Sep;93(9):336-9.
The phenomenon of foetal head descent and the effect of station of foetal head at admission on the course of labour were studied on the basis of a prospective partographic study in 100 cases of normal labour. Only 16.9% of nulliparous women had engaged foetal head at admission in labour. Engagement of foetal head occurred during the period of maximum slope of cervical dilatation in nulliparous women and at the onset of deceleration phase in multiparous women. Parturients with unengaged foetal head entered hospital much earlier in labour than those with engaged foetal based. Course of labour was uninfluenced by the degree of engagement of foetal head. However, multiparous women showed faster rate of foetal head descent than nulliparous women (p < 0.001) and women with lesser haemoglobin concentration demonstrated slower rate of descent of foetal head (p < 0.01).
基于对100例正常分娩的前瞻性产程图研究，对胎头下降现象以及入院时胎头位置对产程的影响进行了研究。初产妇中仅16.9%在入院分娩时胎头已衔接。初产妇胎头衔接发生在宫颈扩张最大斜率期，经产妇则发生在减速期开始时。胎头未衔接的产妇比胎头已衔接的产妇入院分娩时间要早得多。产程不受胎头衔接程度的影响。然而，经产妇的胎头下降速度比初产妇快（p<0.001），血红蛋白浓度较低的产妇胎头下降速度较慢（p<0.01）。
