Fetal growth restriction and causes

What fetal growth restriction means Fetal growth restriction is generally used when a fetus has not achieved its expected growth potential. In clinical practice, suspicion often begins when estimated fetal weight or fetal abdominal circumference is below the 10th percentile for gestational age. However, percentiles are screening tools, not complete diagnoses. A fetus below the […]

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Oligohydramnios and polyhydramnios explained

Why amniotic fluid matters Amniotic fluid is not simply “water around the baby.” In early pregnancy, it is largely derived from maternal plasma and fluid movement across fetal membranes. Later, fetal urine becomes a major contributor, while fetal swallowing, lung fluid movement, membrane exchange, and placental dynamics help regulate the total volume. Because production and […]

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PROM and PPROM explained

What are the membranes, and what does rupture mean? The “membranes” are the fetal membranes, commonly described as the amniotic sac. They enclose the fetus and amniotic fluid. Rupture means a break has occurred in these membranes, allowing amniotic fluid to leak through the cervix and vagina. In everyday language, this is often called “water […]

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Cervical insufficiency and cerclage procedure

Understanding cervical insufficiency The cervix is the lower, narrow portion of the uterus that opens into the vagina. In most pregnancies, it remains long and closed until late in the third trimester, when normal cervical ripening begins in preparation for labor. In cervical insufficiency, the cervix may shorten or dilate prematurely, sometimes without contractions, pain, […]

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Preterm labor causes and risks

What preterm labor means Preterm labor is generally defined as labor that begins before 37 completed weeks of gestation. Clinically, this means regular uterine contractions accompanied by cervical change, such as dilation or effacement. This distinction matters because many pregnant people experience Braxton Hicks contractions or transient uterine irritability, particularly in the third trimester, without […]

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Hyperemesis gravidarum and severe vomiting complications

What hyperemesis gravidarum means Hyperemesis gravidarum, often abbreviated HG, is the severe end of the nausea and vomiting spectrum in pregnancy. Typical nausea and vomiting of pregnancy may be unpleasant but often allows some fluid and food intake. HG is different because symptoms are persistent, clinically significant, and may cause measurable harm such as dehydration, […]

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Clotting disorders and thrombophilia in pregnancy

Why pregnancy increases clotting risk Pregnancy produces a carefully balanced shift in hemostasis. Levels of several clotting factors rise, natural anticoagulant activity changes, fibrinolysis is reduced, and venous blood flow from the legs can slow as the uterus enlarges. Together with vessel wall changes and reduced mobility in some pregnancies, these factors fit Virchow’s triad: […]

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Anemia and iron deficiency in pregnancy

What anemia and iron deficiency mean Anemia is a reduction in the oxygen-carrying capacity of blood, most often assessed by hemoglobin concentration. In pregnancy, hemoglobin thresholds differ from nonpregnant ranges because plasma volume expands more than red cell mass, producing physiologic hemodilution. This can make interpretation more nuanced: a mildly lower hemoglobin may be expected, […]

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Blighted ovum and molar pregnancy explained

What is a blighted ovum? A blighted ovum, or anembryonic pregnancy, happens when a fertilized egg implants in the uterus and a gestational sac develops, but an embryo does not form or stops developing at a very early stage. The body may still produce pregnancy hormones, so a home pregnancy test can be positive and […]

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Bleeding in third trimester and emergency warning signs

Why bleeding late in pregnancy is taken seriously Bleeding in the third trimester is clinically significant because it may represent maternal blood loss, fetal blood loss, or both. The uterus has a large blood supply near term, and placental complications can evolve from mild bleeding to hemodynamic instability or fetal distress in a short time. […]

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