Oligohydramnios is a lack of amniotic fluid volume; it is associated with complications in the mother and fetus. The diagnosis is determined by ultrasound measurement of amniotic fluid. The treatment involves close monitoring and serial ultrasound examinations.

The volume of amniotic fluid can not be safely determined directly, except perhaps during a Caesarean section. Thus, lack of liquid is indirectly defined using ultrasound criteria, usually through amniotic fluid index (AFI). AFI is the sum of the vertical depth of liquid in each quadrant of the uterus. The normal AFI varies from 5 to 25 cm; Values ??<5 cm indicate oligohydramnios.

Oligohydramnios is a lack of amniotic fluid volume; it is associated with complications in the mother and fetus. The diagnosis is determined by ultrasound measurement of amniotic fluid. The treatment involves close monitoring and serial ultrasound examinations. The volume of amniotic fluid can not be safely determined directly, except perhaps during a Caesarean section. Thus, lack of liquid is indirectly defined using ultrasound criteria, usually through amniotic fluid index (AFI). AFI is the sum of the vertical depth of liquid in each quadrant of the uterus. The normal AFI varies from 5 to 25 cm; Values ??<5 cm indicate oligohydramnios. Causes of polyhydramnios include the following: uteroplacental insufficiency (eg due to pre-eclampsia, chronic hypertension, placental abruption, a thrombotic disorder or other maternal disease.) Drugs (eg, ACE inhibitors, NSAIDs.) Transferred pregnancy malformations, particularly those that reduce the production of urine Fetal growth retardation (Fetal death) Fetal chromosomal abnormalities (. eg aneuploidy) Premature rupture Idiopathic complications following complications occur in connection with polyhydramnios on: Fetal death Fetal growth restriction contractures of limb (if oligohydramnios starts early in pregnancy) Delayed lung maturation (if oligohydramnios early in pregnancy begins) to tolerate incompetence fetal contractions what a cesarean necessitating risk of complications depends on how much amniotic fluid is present, and what is the cause. Symptoms and signs A Oligohydramnios tends to cause no other symptoms in the mother as a feeling of decreased fetal movement. Uterus may be smaller than expected for the event. Also interference that may cause oligohydramnios or contribute to its origin, can cause tinnitus. Diagnostic Ultrasound measurement of amniotic fluid Comprehensive ultrasound examination, including assessment of fetal malformations testing for clinically suspected causes in the mother. Sometimes color Doppler sonography of the umbilical artery A Oligohydramnios may be suspected if the uterine size is less than expected, or if reduce the fetal fetal movement; it can also be assumed based on random sonographic findings. A qualitative assessment of amniotic fluid volume, however, be subjective in general. If oligohydramnios is believed Fruchtein water should be quantitatively evaluated with the AFI. Clarification of the cause If oligohydramnios is diagnosed, doctors should check for possible causes, including rupture of membranes. A comprehensive ultrasound examination is performed to check for fetal abnormalities and any obvious causes placenta (z. B. detachment of the placenta). Doctors may offer an amniocentesis and fetal karyotyping, v. a. if sonography suggests fetal abnormalities or aneuploidy. When a uteroplacental insufficiency is suspected, the umbilical artery is evaluated by Doppler ultrasonography. Therapy Serial sonography to determine AFI and fetal growth monitoring may Nonstress tests or biophysical profile ultrasound should be at least once every 4 weeks (every 2 weeks, when growth is limited) are performed to monitor fetal growth. The AFI should be measured at least weekly. Most experts recommend fetal monitoring with Nonstress tests or biophysical profile at least 1 times / week and on-time delivery. However, the effectiveness of this therapeutic approach to prevent fetal death, not proven. In addition, an optimal time for delivery controversial and may vary according to patient characteristics. Key points A Oligohydramnios can be caused by uteroplacental insufficiency, drugs, birth defects or premature rupture of membranes. It can (to tolerate such. As growth restriction, contractures of limbs, death, delayed lung development, the inability to labor) problems in the fetus cause. If oligohydramnios is suspected, determine the amniotic fluid index and test for possible causes (including implementation of a comprehensive ultrasound evaluation). Perform at least every 4 weeks a sonography, and pull the fetal monitoring at least 1 times / week and on-time delivery into account (although optimum time for delivery varies).

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