Oligohydramnios at term and pregnancy outcome

2001 ◽  
Vol 12 (3) ◽  
pp. 209-227 ◽  
Author(s):  
Everett F Magann ◽  
Suneet P Chauhan ◽  
James N Martin Jr.
Keyword(s):  
Amniotic Fluid ◽  
Chronic Stress ◽  
Direct Measurement ◽  
Caesarean Delivery ◽  
Well Being ◽  
Fluid Volume ◽  
Dye Dilution ◽  
Amniotic Fluid Volume ◽  
Study Protocols ◽  
Biophysical Profile

An assessment of amniotic fluid volume has become an important component of antenatal testing for the at-risk pregnancy. The presence of normal amniotic fluid volume, either in association with a reactive nonstress test or as a component of the biophysical profile is considered to reflect current fetal well being and probable absence of chronic stress. The chronically stressed fetus is likely to have low amniotic fluid volume because of the shunting of blood preferentially to the brain, heart and adrenal glands at the expense of other body systems during the period of chronic stress. Decreased renal blood flow leads to decreased urinary output. Because the primary component of amniotic fluid in the third trimester of pregnancy is fetal urine, ongoing chronic stress can be recognised as oligohydramnios.Precise amniotic fluid volume (AFV) measurement is accomplished either by use of a dye-dilution technique or by direct measurement of the fluid volume at the time of caesarean delivery. The need for laboratory support and the inherent invasiveness of dye-dilution procedures limits their application to study protocols. Direct measurement of AFV at caesarean delivery is reflective only of fluid volume at the time of delivery and cannot be used to serially evaluate fluid volume as a component of antenatal testing.

scholarly journals Modified biophysical profile in antepartum fetal surveillance of high risk pregnancies

2017 ◽  
Vol 6 (5) ◽  
pp. 1854
Author(s):  
K. P. Sowmya ◽  
S. R. Mudanur ◽  
Padmasri R. ◽  
Lalitha S.
Keyword(s):  
High Risk ◽  
Amniotic Fluid ◽  
Perinatal Outcome ◽  
Stress Test ◽  
Fluid Volume ◽  
Prospective Clinical Study ◽  
Amniotic Fluid Volume ◽  
Risk Pregnancy ◽  
Biophysical Profile ◽  
Fetal Surveillance

Background: Fetal biophysical profile is a well-established method of antepartum surveillance in high risk pregnancy. Classical biophysical profile with all parameters (fetal breathing movements, fetal tone, fetal gross body movements, amniotic fluid volume and non-stress test) needs two phase testing by ultrasound and external Doppler monitor to record fetal heart rate, is more cumbersome, time consuming and expensive.Methods: This study was a prospective clinical study which consisted of 70 patients having pregnancy with high risk factors. The patients were evaluated with the modified biophysical profile consisting of NST recording for 20mins, followed ultrasound assessment of amniotic fluid volume, using four quadrant technique.Results: When the Modified biophysical profile is normal, it gives reassurance that the fetal status is good with good perinatal outcome. When the MBPP is abnormal there is increased incidence of perinatal morbidity as well as mortality.Conclusions: Modified biophysical profile is an effective primary antepartum fetal surveillance test in high risk pregnancies in predicting perinatal outcome.

Low Amniotic Fluid Volume is Poorly Identified in Singleton and Twin Pregnancies Using the 2 x 2 cm Pocket Technique of the Biophysical Profile

1999 ◽  
Vol 92 (8) ◽  
pp. 802-806 ◽  
Author(s):  
EVERETT F. MAGANN ◽  
BOBBY G. NEVILS ◽  
SUNEET P. CHAUHAN ◽  
NEIL S. WHITWORTH ◽  
JACK H. KLAUSEN ◽  
...  
Keyword(s):  
Amniotic Fluid ◽  
Fluid Volume ◽  
Amniotic Fluid Volume ◽  
Biophysical Profile ◽  
Twin Pregnancies

scholarly journals Comparison of Amniotic Fluid Index and Single Deepest Vertical Pool method for predicting fetal outcome

2017 ◽  
Vol 13 (4) ◽  
pp. 401-405
Author(s):  
Rajiv Shah ◽  
Paban Sharma
Keyword(s):  
High Risk ◽  
Data Collection ◽  
Amniotic Fluid ◽  
Mode Of Delivery ◽  
Well Being ◽  
Fluid Volume ◽  
Study Group ◽  
Amniotic Fluid Index ◽  
Amniotic Fluid Volume ◽  
Significant Difference

Background & Objectives: The measurement of amniotic fluid volume (AFV) has been an important component of antenatal evaluation of fetal well being. The most commonly used methods are by amniotic fluid index technique (AFI) and single deepest pool method (SDVP). Both the methods employ ultrasound for AFV measurement. The objective of this study is to compare the usefulness of AFI and SDVP method in assessing amniotic fluid volume for predicting adverse perinatal outcome.Materials & Methods: This is a hospital based prospective comparative study. The patient whose amniotic fluid was measured by SDVP technique was study group and that by AFI was comparison group. Any case with high risk factor was excluded from the study. First case was decided by lottery and then alternately one case was kept in study group and the other in comparative group. If the women did not deliver within 1 week the measurements was retaken and the final values was used for analysis.AFI was estimated as described by Phelan and colleagues and SDVP as described by Manning. Data collection was started after the approval of Institution review board. This study was conducted at Patan Academy of Health Sciences. Duration of data collection was 3 months, Asadh –Bhadra, 2071.Results: A total of one hundred and fifty four cases which met the inclusion criteria were taken. Incidence of oligohydramnios by SDVP method was 10.4 % by SDVP technique and by AFI method it was 18.2 %. There was no statistical significant difference between the two groups in terms of rate of induction, mode of delivery, meconium staining of liquor, fetal heart rate tracings, APGAR score at 5 mins and admission to special care baby unit.Conclusion: In non-high risk pregnancy AFI technique detects slightly more number of oligohydramnios as compared to SDVP technique without apparently any difference in perinatal outcome.

Biophysical Profile With Amniotic Fluid Volume Assessments

2004 ◽  
Vol 104 (1) ◽  
pp. 5-10 ◽  
Author(s):  
Everett F. Magann ◽  
Dorota A. Doherty ◽  
Karen Field ◽  
Suneet P. Chauhan ◽  
Patrick E. Muffley ◽  
...  
Keyword(s):  
Amniotic Fluid ◽  
Fluid Volume ◽  
Amniotic Fluid Volume ◽  
Biophysical Profile

scholarly journals Amniotic Fluid Assessment: Amniotic Fluid Index Versus Maximum Vertical Pocket

2017 ◽  
Vol 33 (4) ◽  
pp. 280-283 ◽  
Author(s):  
Jacquelyn Coombe-Patterson
Keyword(s):  
Amniotic Fluid ◽  
Pregnancy Outcomes ◽  
Adverse Outcome ◽  
Well Being ◽  
Fluid Volume ◽  
The Other ◽  
Amniotic Fluid Index ◽  
Amniotic Fluid Volume ◽  
Fluid Assessment ◽  
Adverse Pregnancy

Amniotic fluid assessment is vital to fetal well-being. Accurately diagnosing an amniotic fluid abnormality can aid in the proper management of a pregnancy at risk for an adverse outcome. Sonography is the most common way to assess amniotic fluid volume throughout a pregnancy; however, the most accurate technique, amniotic fluid index or maximum vertical pocket, is yet to be determined. Dye-dilution techniques are the most accurate way to measure amniotic fluid volume, but they are invasive and can be performed only at the time of a cesarean delivery. Multiple studies have been performed to determine the accuracy of the amniotic fluid index and maximum vertical pocket methods when diagnosing amniotic fluid volume abnormalities. Based on the studies reviewed in this article, neither method stands out as superior to the other when it comes to diagnosing amniotic fluid abnormalities during pregnancy. However, the maximum vertical pocket should also always be considered when an amniotic fluid abnormality is suspected because the amniotic fluid index overdiagnoses amniotic fluid abnormalities, leading to increased rates of pregnancy intervention and the potential for adverse pregnancy outcomes.

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