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A blighted ovum is a pregnancy in which the embryo never develops or develops and is reabsorbed. [ 1] In a normal pregnancy, an embryo would be visible on an ultrasound by six weeks after the woman's last menstrual period. [ 2] Anembryonic gestation is one of the causes of miscarriage of a pregnancy and accounts for roughly half of first ...
Frequency. ~8% of term pregnancies, [ 2] ~30% of preterm pregnancies [ 4] Prelabor rupture of membranes ( PROM ), previously known as premature rupture of membranes, is breakage of the amniotic sac before the onset of labour. [ 2] Women usually experience a painless gush or a steady leakage of fluid from the vagina. [ 1]
Obstetric ultrasonography, or prenatal ultrasound, is the use of medical ultrasonography in pregnancy, in which sound waves are used to create real-time visual images of the developing embryo or fetus in the uterus (womb).
Cervical weakness. Cervical weakness, also called cervical incompetence or cervical insufficiency, is a medical condition of pregnancy in which the cervix begins to dilate (widen) and efface (thin) before the pregnancy has reached term. Definitions of cervical weakness vary, but one that is frequently used is the inability of the uterine cervix ...
Fetal distress, also known as non-reassuring fetal status, is a condition during pregnancy or labor in which the fetus shows signs of inadequate oxygenation. [ 1] Due to its imprecision, the term "fetal distress" has fallen out of use in American obstetrics. [ 2][ 1][ 3] The term "non-reassuring fetal status" has largely replaced it. [ 4]
Severe complications of pregnancy, childbirth, and the puerperium are present in 1.6% of mothers in the US, [6] and in 1.5% of mothers in Canada. [7] In the immediate postpartum period (puerperium), 87% to 94% of women report at least one health problem. [8] [9] Long-term health problems (persisting after six months postpartum) are reported by ...
Gestational trophoblastic disease ( GTD) is a term used for a group of pregnancy-related tumours. [ 1] These tumours are rare, and they appear when cells in the womb start to proliferate uncontrollably. The cells that form gestational trophoblastic tumours are called trophoblasts and come from tissue that grows to form the placenta during ...
Medical genetics. Congenital pulmonary airway malformation ( CPAM ), formerly known as congenital cystic adenomatoid malformation ( CCAM ), is a congenital disorder of the lung similar to bronchopulmonary sequestration. In CPAM, usually an entire lobe of lung is replaced by a non-working cystic piece of abnormal lung tissue.