L/O/G/OPretermLaborFuDanDept.of Obstetrics&GynecologyNorthern Jiangsu Hospital
L/O/G/O Preterm Labor Fu Dan Dept. of Obstetrics & Gynecology Northern Jiangsu Hospital
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epidemiologyLabor and delivery between 28 - 36+6 weeks5%-10%: be the leading cause of perinatal morbidityand mortalitySurvivalrates haveincreased andmorbidity has decreased because oftechnologic advances
epidemiology • Labor and delivery between 28 – 36+6 weeks • 5%-10% • be the leading cause of perinatal morbidity and mortality • Survival rates have increased and morbidity has decreased because of technologic advances
Categories and reasons: It can be divided into three categoriesaccording to the reasons about pretermbirth.-Spontaneouspretermlabor-Pretermprematurelyrupturedmembranes,PPROM-Pretermbirthformedicalandobstetricalindications
Categories and reasons • It can be divided into three categories according to the reasons about preterm birth. – Spontaneous preterm labor – Preterm prematurely ruptured membranes, PPROM – Preterm birth for medical and obstetrical indications
Spontaneous preterm labor Is the most common (about 45%)The mechanismisProgesterone withdrawal_ The role of oxytocin- Decidua activation
Spontaneous preterm labor • Is the most common (about 45%) • The mechanism is – Progesterone withdrawal – The role of oxytocin – Decidua activation