Excess fluid of more than 2,000 ml or 2 Liters or Amniotic Fluid index above 24cm
Polyhydramnios
Increase in amniotic fluid in pregnancy and is associated with increased maternal and neonatal morbidity andmortality
Classification of Polyhydramnios
MVP (Maximal Vertical Pocket)
AFI (Amniotic Fluid Index)
Severity of Polyhydramnios
Mild: MVP 8-12 cm, AFI >24 cm and <30cm
Moderate: MVP 12-15cm, AFI 30 cm and 35cm
Severe: >15cm and AFI >35cm
Polyhydramnios occurs in 1-2% of pregnancies
Polyhydramnios is more common in Multipara rather than Primipara
Causes of Polyhydramnios
Idiopathic (65%)
Diabetes Mellitus (15%): Type 1 Diabetes
Rhesus Iso-Immunization: Blood Incompatibility
Multiple Pregnancy (18%)
Fetal Anomaly
Assessment Findings of Polyhydramnios
Unusually rapid enlargement of the uterus
The small parts are difficult to palpate
Auscultating the FHR can be difficult due to the increased depth of the increased amount of the AF (Amniotic Fluid) surrounding the fetus
Extreme shortness of Breath
Lower Extremities varicosities
Hemorrhoids
Increase Weight Gain
Amniotic Fluid Index (AFI)
Calculated by measuring the maximum cord-free vertical pocket of fluid in four quadrants of the uterus and adding them together
Maximum pool depth (MPD)
The vertical measurement in any area
AFI and MPD have similar diagnostic accuracy, however AFI is more commonly used
Therapeutic Management of Polyhydramnios
No medical intervention is required in the majority of women
Bedrest is not indicated
Assessment and monitoring of vitalsigns
Instruct clients to avoid straining during defecation
Increasefiber in the diet
Complications of Polyhydramnios
Preterm Prelabor Rupture of Membranes (PPROM)
Preterm Birth
Malpresentation
Risk for Infection
Prolapse of Umbilical Cord
Oligohydramnios
Pregnancy with less than the average amount of amniotic fluid
Amniotic fluid index below the 5th centile for the gestational age
Indicates Oligohydramnios
Oligohydramnios affects approximately 4.5% of term pregnancies
Causes of Oligohydramnios
Preterm prelabour rupture of membranes
Placentalinsufficiency
Renal agenesis (known as Potter'ssyndrome)
Non-functioning fetal kidneys, e.g. bilateral multicystic dysplastic kidneys
Obstructive uropathy
Genetic/chromosomal anomalies
Viral infections (although may also cause polyhydramnios)
Assessment Findings of Oligohydramnios
The uterusfailstomeet the expected growth rate
Decreased or less frequent baby movements
Slow heartbeat of the baby
Fluid leaking from the vagina, which may indicate a rupture of the sac
Facial abnormalities or low urine output in the baby, which may be caused by kidney problems
Diagnosis of Oligohydramnios is the same as Polyhydramnios
Nursing Management of Oligohydramnios
Monitor maternal and fetal status closely, including vital signs and fetal heart rate patterns
Monitor maternal weight gain pattern, notifying the health care provider if weight loss occurs
Induction of labor should be considered. If not acceptable by the patient, after counseling, organize scans every week for LV and Umbilical artery Dopplers, and twice weekly Cardiotocography (CTG)
Steroid should be considered if cesarean delivery is planned at less than 39 weeks
Ask patients to report any change in fetal movements
Complications of Oligohydramnios
Intrauterine growth restriction
Inability of the fetus to tolerate labor, leading to the need for cesarean delivery
Limb contractures (if oligohydramnios begins early in the pregnancy)
Delayed or incomplete lung maturation
Preterm birth
Kidney and compromised lung development in neonate
Fetal death
Post term pregnancy
Pregnancy which has extended beyond 42weeks of gestation period (>294days)
Post term pregnancy occurs in approximately 4% of all pregnancies
Causes of Post term pregnancy
Error in calculation of gestational age
Inaccurate or unknown dates
Irregular ovulation (results in over estimation of gestational age)
Previous post-term pregnancies
Fetal Adrenal Hypoplasia (decrease production of precursor of estriol)
Elderly multipara
Obesity
Irregular menstrual cycle
Sulphate deficiency in the placenta
Prevention of Post term pregnancy
Recording LMP and calculating EDD at the time of 1st antenatal visit
Routineearlyultrasound for dating gestation or pregnancy
Review of ANC and ultrasonography reports in terms of fetal growth
As soon as prematurity is ruled out in high risk cases, induction of labor will prevent postmaturity
Physiological Changes associated with post term pregnancy
PlacentalChanges: Aging of Placenta, Calcification, and Infractions
AmnioticFluidChanges: Oligohydramnios, Cloudy, Presence of meconium