?dystocia
仁济医院 RENJI HOSPITAL dystocia
DefinitionDystocia literally means difficultlabor and it is characterized byabnormally slow progress of laborIt is the consequence of four distinctabnormalities that may existsingly orcombinationRENJIHOSPITAL
2 RENJI HOSPITAL Definition Dystocia literally means difficult labor and it is characterized by abnormally slow progress of labor It is the consequence of four distinct abnormalities that may exist singly or combination
Categories of dystociaAbnormal of the powers(uterine contractilityand maternal expulsive effort)Abnormalities of passenger(the fetus)Abnormalities of the passage(the birth canal)RENJIHOSPITAL
3 RENJI HOSPITAL uAbnormal of the powers(uterine contractility and maternal expulsive effort) uAbnormalities of passenger(the fetus) uAbnormalities of the passage(the birth canal) Categories of dystocia
Abnormalities of the powersUterine dysfunctionhypotonic-primaryuterine inertiasecondaryUterinehypertonicDysfunctionuterine hypercontractilityRENJIHOSPITAL
4 RENJI HOSPITAL Abnormalities of the powers Uterine dysfunction hypotonic primary uterine inertia secondary Uterine hypertonic Dysfunction uterine hypercontractility
Abnormalities of the powersTable 1. Clinical Criteria for the Differentiation of the Two Types of DysfunctionHYPOTONICHYPERTONICOccurrence rate4% of labors1% of laborsPhase of laborActiveLatentClinical symptomPainlessPainfulFetal distressLateEarlyReaction to oxytocinFavorableUnfavorableLitleValueof sedationGreatRENJIHOSPITAL
5 RENJI HOSPITAL Abnormalities of the powers