The First Trimester Vocabulary Flashcards
The complete expulsion or parietal expulsion of the conceptus
Abortion
The sonographic sign that describes the appearance of an ectopic pregnancy within the Fallopian tube
Adnexal Ring Sign
The wall of the inner sac (amniotic cavity) that contains the embryo and amniotic fluid; echogenic curvilinear structure that may be seen during the first trimester within the gestational sac
Amnion
The cavity that contains simple-appearing amniotic fluid and the developing embryo
Amniotic Cavity
An abnormal pregnancy in which there is no evidence of a fetal pole or yolk sac within the gestational sac; also referred to as blighted ovum
Anembryonic Gestation
A condition of having an abnormal number of chromosomes
Aneuploid
The stage of the conceptus that implants within the decidualized endometrium
Blastocyst
The most malignant form of gestational trophoblastic disease with possible metastasis to the liver, lungs, and vagina
Choriocarcinoma
The outer membrane of a gestation that surrounds the amnion and the developing embryo
Chorion
The part of the chorion, covered by chorionic villi, that is the fetal contribution of the placenta
Chorion Frondosum
The space between the chorion sac and the amniotic sac that contains the secondary yolk sac; also referred to as the extraembryonic coelom
Chorionic Cavity
The gestational sac; also referred to as the chorion
Chorionic Sac
Fingerlike projections of gestational tissue that attach to the decidualized endometrium and allow transfer of nutrients from the mother to the fetus
Chorionic Villi
The combination of a female ovum with a male sperm to produce a zygote; also referred to as fertilization
Conception
Physiologic ovarian cyst that develops after ovulation has occurred
Corpus Luteum Cyst
The corpus luteum that is maintained during an early pregnancy for the purpose of producing estrogen and primarily progesterone
Corpus Luteum of Pregnancy
The measurement of the embryo/fetus from the top of the head to the rump
Crown Rump Length
The endometrial tissue at the implantation site, and the maternal contribution of the placenta
Decidua Basilis
The physiologic effect on the endometrium in the presence of a pregnancy
Decidual Reaction
The level of human chorionic gonadotropin beyond which an intrauterine pregnancy is consistently visible
Discriminatory Zone
The normal sonographic appearance of the decidua capsularis and decidua parietalis, separated by the anechoic fluid-filled uterine cavity
Double Decidual Sign
A sequela of preeclampsia in which uncontrollable maternal hypertension and proteinuria lead to maternal convulsions and possibly fetal and maternal death
Eclampsia
A pregnancy located outside the endometrial cavity of the uterus
Ectopic Pregnancy
Term given to the developing fetus before 10 weeks gestation
Embryo
The death of an embryo before 10 weeks gestation
Embryonic Demise
Localized, painless contractions of the myometrium in the gravid uterus that should resolve within 20 to 30 minutes
Focal Myometrial Contraction
The way in which a pregnancy can be dated based on the first day of the last menstrual cycle; also referred to as. menstrual age
Gestational Age
A disease associated with an abnormal proliferation of the trophoblastic cells during pregnancy; may also be referred to as a molar pregnancy
Gestational Trophoblastic Disease
Coexisting ectopic and intrauterine pregnancies
Heterotopic Pregnancy
Hormone produced by the trophoblastic cells of the early placenta; may also be used as a tumor marker in non gravid patients and males
Human Chorionic Gonadotropin
The most common form of gestational trophoblastic disease in which there is an excessive growth of the placenta and high levels of human chorionic gonadotropin; typically benign
Hydatidiform Mole
Excessive vomiting during pregnancy
Hyperemesis Gravidarum
A bleed that occurs at the time in which the conceptus implants into the decidualized endometrium
Implantation Bleed
The appearance of a small gestational sac in the uterine cavity surrounded by the thickened, echogenic endometrium
Intradecidual Sign
A reversible form of contraceptive that is manually placed in the uterine cavity to prevent pregnancy; also referred to as an intrauterine device
Intrauterine Contraceptive Device
A type of gestational trophoblastic disease in which a molar pregnancy invades into the myometrium and may also invade through the uterine wall and into the peritoneum
Invasive Mole
Early embryonic structures that will eventually give rise to the extrememties
Limb buds
The measurement of the gestational sac to obtain a gestational age
Mean Sac Diameter
A chemotherapy drug used to attack rapidly dividing cells like those seen in an early pregnancy; this drug is often used to manage ectopic pregnancies
Methotrexate
The spontaneous end of a pregnancy before viability
Miscarriage
Fetal demise with a retained fetus
Missed Abortion
The developmental stage of the conceptus following the zygote
Morula
The anechoic space along the posterior aspect of the fetal neck
Nuchal Translucency
The normal developmental stage when the midgut migrates into the base of the umbilical cord
Physiologic Bowel Herniation
Pregnancy-induced maternal high blood pressure and excess protein in the urine after 20 weeks gestation
Preeclampsia
The appearance of an abnormally shaped false gestational sac within the uterine cavity as a result of an ectopic pregnancy; this often corresponds with the accumulation of blood and secretions within the uterine cavity
Pseudogestational Sac
The primary brain vesicle also referred to as the hindbrain; becomes the cerebellum, pons, medulla oblongata, and fourth ventricle
Rhombencephalon
The structure responsible for early nutrient transfer to the embryo; the yolk sac seen during a sonographic examination of the early gestation
Secondary Yolk Sac
A bleed between the endometrium and the gestational sac at the edge of the placenta
Subchorionic Hemorrhage
Having three sets of each chromosome or 69 total
Triploid
Chromosomal abberation in which there is a third chromosome 18; also referred to as Edwards Syndrome
Trisomy 18
Chromosomal abberation in which there is a third chromosome 21, also referred to as Down Syndrome
Trisomy 21
The cells the surround the gestation that produces that produce human chorionic gonadotropin
Trophoblastic Cells
A chromosomal abberation where one sex chromosome is absent; may also be referred to as monosomy X
Turner Syndrome
The structure that connects the developing embryo to the secondary yolk sac
Vitelline Duct
The cell formed by the union of two gametes; the first stage of a fertilized ovum
Zygote
