Classification and external resources
ICD-10 O41.0
ICD-9 658.0
DiseasesDB 9202
eMedicine radio/898
MeSH D016104

Oligohydramnios is a condition in pregnancy characterized by a deficiency of amniotic fluid. It is the opposite of polyhydramnios.



Diagnosis is made by ultrasound measurement of the amniotic fluid index (AFI) <5cm. Several different methods exist for calculating AFI, that produce different index numbers below which oligohydramnios is said to be present.


It is typically caused by fetal urinary tract abnormalities such as bilateral renal agenesis ( Potter's syndrome ), fetal polycystic kidneys, or genitourinary obstruction. Uteroplacental insufficiency is another common cause. Most of these abnormalities can also be detected by obstetric ultrasound. It may also occur simply due to dehydration of the mother, maternal use of angiotensin converting enzyme inhibitors, or without a determinable cause (idiopathic).


Complications may include cord compression, musculoskeletal abnormalities such as facial distortion and clubfoot, pulmonary hypoplasia and intrauterine growth restriction. Amnion nodosum is frequently also present (nodules on the fetal surface of the amnion).[1]

The use of oligohydramnios as a predictor of gestational complications is controversial.[2][3]


A Cochrane Review concluded that simple maternal hydration appears to increase amniotic fluid volume and may be beneficial in the management of oligohydramnios and prevention of oligohydramnios during labour or prior to external cephalic version.[4]

In severe cases oligohydramnios may be treated with amnioinfusion during labor to prevent cord compression.

See also


  1. ^ Adeniran AJ, Stanek J, (2007). "Amnion nodosum revisited: clinicopathologic and placental correlations". Arch Pathol Lab Med 131 (12): 1829–33. doi:10.1043/1543-2165(2007)131[1829:ANRCAP]2.0.CO;2. PMID 18081444. 
  2. ^ Johnson JM, Chauhan SP, Ennen CS, Niederhauser A, Magann EF (2007). "A comparison of 3 criteria of oligohydramnios in identifying peripartum complications: a secondary analysis". Am. J. Obstet. Gynecol. 197 (2): 207.e1–7; discussion 207.e7–8. doi:10.1016/j.ajog.2007.04.048. PMID 17689653. 
  3. ^ Elsandabesee D, Majumdar S, Sinha S (2007). "Obstetricians' attitudes towards 'isolated' oligohydramnios at term". Journal of obstetrics and gynaecology : the journal of the Institute of Obstetrics and Gynaecology 27 (6): 574–6. doi:10.1080/01443610701469669. PMID 17896253. 
  4. ^ Hofmeyr GJ, Gülmezoglu AM (2000). Novikova, Natalia. ed. "Maternal hydration for increasing amniotic fluid volume in oligohydramnios and normal amniotic fluid volume". Cochrane Database of Systematic Reviews (Online) (2): CD000134. doi:10.1002/14651858.CD000134. PMID 10796151. 

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Look at other dictionaries:

  • oligohydramnios — The presence of an insufficient amount of amniotic fluid (less than 300 mL at term). SYN: hypamnion, hypamnios, oligamnios, oligoamnios. [oligo + G. hydor, water, + amnion] * * * oli·go·hy·dram·ni·os .äl i gō .hī dram nē .äs, ə .lig ə n… …   Medical dictionary

  • oligohydramnios sequence — a group of anomalies, usually causing death shortly after birth, caused by compression of the fetus secondary to oligohydramnios, which may result from renal agenesis or other fetal urinary tract defects or from leakage of amniotic fluid; infants …   Medical dictionary

  • oligohydramnios — noun A deficit of amniotic fluid in the amniotic sac, causing distinctive deformations of the foetus. Ant: polyhydramnios …   Wiktionary

  • oligohydramnios — ol·i·go·hydramnios …   English syllables

  • oligohydramnios — n. a decrease in the amount of amniotic fluid surrounding the fetus, which may occur in the second and third trimesters. It is usually associated with restricted fetal growth and may indicate serious fetal kidney abnormalities. See: Potter… …   The new mediacal dictionary

  • oligohydramnios — |älə̇gō, ə|ligə+ˌ ̷ ̷| ̷ ̷ ̷ ̷ˌ ̷ ̷ noun Etymology: New Latin, from olig + hydramnios : deficiency of amniotic fluid sometimes resulting in embryonic defect through adherence between embryo and amnion …   Useful english dictionary

  • Олигоамнион, Маловодие (Oligohydramnios) — аномальное уменьшение количества околоплодных вод, в которых находится плод во время беременности (0 200 мл в третьем триместре беременности). Обычно маловодие сопровождается задержкой роста плода и может свидетельствовать о серьезной аномалии… …   Медицинские термины

  • ОЛИГОАМНИОН, МАЛОВОДИЕ — (oligohydramnios) аномальное уменьшение количества околоплодных вод, в которых находится плод во время беременности (0 200 мл в третьем триместре беременности). Обычно маловодие сопровождается задержкой роста плода и может свидетельствовать о… …   Толковый словарь по медицине

  • Potter sequence — Not to be confused with Doege Potter syndrome or Pott s Disease. Potter sequence Classification and external resources ICD 10 Q60.6 ICD 9 …   Wikipedia

  • Potter syndrome — DiseaseDisorder infobox Name = Potter syndrome ICD10 = ICD10|Q|60|6|q|60 ICD9 = ICD9|753.0, ICD9|658.0, ICD9|761.2 (for oligohydramnios) ICDO = Caption = OMIM = MedlinePlus = 001268 eMedicineSubj = ped eMedicineTopic = 1878 DiseasesDB = 11252… …   Wikipedia

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