INFLAMMATION of the placental membranes (CHORION; AMNION) and connected tissues such as fetal BLOOD VESSELS and UMBILICAL CORD. It is often associated with intrauterine ascending infections during PREGNANCY.
Spontaneous tearing of the membranes surrounding the FETUS any time before the onset of OBSTETRIC LABOR. Preterm PROM is membrane rupture before 37 weeks of GESTATION.
A clear, yellowish liquid that envelopes the FETUS inside the sac of AMNION. In the first trimester, it is likely a transudate of maternal or fetal plasma. In the second trimester, amniotic fluid derives primarily from fetal lung and kidney. Cells or substances in this fluid can be removed for prenatal diagnostic tests (AMNIOCENTESIS).
The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.
Onset of OBSTETRIC LABOR before term (TERM BIRTH) but usually after the FETUS has become viable. In humans, it occurs sometime during the 29th through 38th week of PREGNANCY. TOCOLYSIS inhibits premature labor and can prevent the BIRTH of premature infants (INFANT, PREMATURE).
The innermost membranous sac that surrounds and protects the developing embryo which is bathed in the AMNIOTIC FLUID. Amnion cells are secretory EPITHELIAL CELLS and contribute to the amniotic fluid.
The thin layers of tissue that surround the developing embryo. There are four extra-embryonic membranes commonly found in VERTEBRATES, such as REPTILES; BIRDS; and MAMMALS. They are the YOLK SAC, the ALLANTOIS, the AMNION, and the CHORION. These membranes provide protection and means to transport nutrients and wastes.
The outermost extra-embryonic membrane surrounding the developing embryo. In REPTILES and BIRDS, it adheres to the shell and allows exchange of gases between the egg and its environment. In MAMMALS, the chorion evolves into the fetal contribution of the PLACENTA.
Infections with bacteria of the genus UREAPLASMA.
CHILDBIRTH before 37 weeks of PREGNANCY (259 days from the first day of the mother's last menstrual period, or 245 days after FERTILIZATION).
The age of the conceptus, beginning from the time of FERTILIZATION. In clinical obstetrics, the gestational age is often estimated as the time from the last day of the last MENSTRUATION which is about 2 weeks before OVULATION and fertilization.
A highly vascularized mammalian fetal-maternal organ and major site of transport of oxygen, nutrients, and fetal waste products. It includes a fetal portion (CHORIONIC VILLI) derived from TROPHOBLASTS and a maternal portion (DECIDUA) derived from the uterine ENDOMETRIUM. The placenta produces an array of steroid, protein and peptide hormones (PLACENTAL HORMONES).
A human infant born before 37 weeks of GESTATION.
The co-occurrence of pregnancy and an INFECTION. The infection may precede or follow FERTILIZATION.
An infant during the first month after birth.
A genus of gram-negative, nonmotile bacteria which are common parasitic inhabitants of the urogenital tracts of humans, cattle, dogs, and monkeys.
A chronic lung disease developed after OXYGEN INHALATION THERAPY or mechanical ventilation (VENTILATION, MECHANICAL) usually occurring in certain premature infants (INFANT, PREMATURE) or newborn infants with respiratory distress syndrome (RESPIRATORY DISTRESS SYNDROME, NEWBORN). Histologically, it is characterized by the unusual abnormalities of the bronchioles, such as METAPLASIA, decrease in alveolar number, and formation of CYSTS.
The repetitive uterine contraction during childbirth which is associated with the progressive dilation of the uterine cervix (CERVIX UTERI). Successful labor results in the expulsion of the FETUS and PLACENTA. Obstetric labor can be spontaneous or induced (LABOR, INDUCED).
A peripheral blood picture resembling that of leukemia or indistinguishable from it on the basis of morphologic appearance alone. (Dorland, 27th ed)
Any type of abortion, induced or spontaneous, that is associated with infection of the UTERUS and its appendages. It is characterized by FEVER, uterine tenderness, and foul discharge.
Compounds that bind to and activate ADRENERGIC BETA-3 RECEPTORS.
CHILDBIRTH at the end of a normal duration of PREGNANCY, between 37 to 40 weeks of gestation or about 280 days from the first day of the mother's last menstrual period.
A species of sheep, Ovis aries, descended from Near Eastern wild forms, especially mouflon.
'Infant, Premature, Diseases' refers to health conditions or abnormalities that specifically affect babies born before 37 weeks of gestation, often resulting from their immature organ systems and increased vulnerability due to preterm birth.
The degree of antigenic similarity between tissues of the mother and those of the FETUS. Maternal-fetal histocompatibility can determine the acceptance and health of the fetus.
The unborn young of a viviparous mammal, in the postembryonic period, after the major structures have been outlined. In humans, the unborn young from the end of the eighth week after CONCEPTION until BIRTH, as distinguished from the earlier EMBRYO, MAMMALIAN.
The flexible rope-like structure that connects a developing FETUS to the PLACENTA in mammals. The cord contains blood vessels which carry oxygen and nutrients from the mother to the fetus and waste products away from the fetus.
A condition of the newborn marked by DYSPNEA with CYANOSIS, heralded by such prodromal signs as dilatation of the alae nasi, expiratory grunt, and retraction of the suprasternal notch or costal margins, mostly frequently occurring in premature infants, children of diabetic mothers, and infants delivered by cesarean section, and sometimes with no apparent predisposing cause.
Percutaneous transabdominal puncture of the uterus during pregnancy to obtain amniotic fluid. It is commonly used for fetal karyotype determination in order to diagnose abnormal fetal conditions.
Premature separation of the normally implanted PLACENTA from the UTERUS. Signs of varying degree of severity include UTERINE BLEEDING, uterine MUSCLE HYPERTONIA, and FETAL DISTRESS or FETAL DEATH.
Inflammation of the ENDOMETRIUM, usually caused by intrauterine infections. Endometritis is the most common cause of postpartum fever.
Any of the ruminant mammals with curved horns in the genus Ovis, family Bovidae. They possess lachrymal grooves and interdigital glands, which are absent in GOATS.
A nonreassuring fetal status (NRFS) indicating that the FETUS is compromised (American College of Obstetricians and Gynecologists 1988). It can be identified by sub-optimal values in FETAL HEART RATE; oxygenation of FETAL BLOOD; and other parameters.
Death of the developing young in utero. BIRTH of a dead FETUS is STILLBIRTH.
Delivery of the FETUS and PLACENTA under the care of an obstetrician or a health worker. Obstetric deliveries may involve physical, psychological, medical, or surgical interventions.
A glucocorticoid given orally, parenterally, by local injection, by inhalation, or applied topically in the management of various disorders in which corticosteroids are indicated. Its lack of mineralocorticoid properties makes betamethasone particularly suitable for treating cerebral edema and congenital adrenal hyperplasia. (From Martindale, The Extra Pharmacopoeia, 30th ed, p724)
The thick green-to-black mucilaginous material found in the intestines of a full-term fetus. It consists of secretions of the INTESTINAL GLANDS; BILE PIGMENTS; FATTY ACIDS; AMNIOTIC FLUID; and intrauterine debris. It constitutes the first stools passed by a newborn.
Functional competence of specific organs or body systems of the FETUS in utero.
Pathological processes or abnormal functions of the PLACENTA.
An interleukin-1 subtype that occurs as a membrane-bound pro-protein form that is cleaved by proteases to form a secreted mature form. Unlike INTERLEUKIN-1BETA both membrane-bound and secreted forms of interleukin-1alpha are biologically active.
A CXC chemokine that is induced by GAMMA-INTERFERON and is chemotactic for MONOCYTES and T-LYMPHOCYTES. It has specificity for the CXCR3 RECEPTOR.
A CXC chemokine that is induced by GAMMA-INTERFERON. It is a chemotactic factor for activated T-LYMPHOCYTES and has specificity for the CXCR3 RECEPTOR.
A species of gram-negative bacteria found in the human genitourinary tract (UROGENITAL SYSTEM), oropharynx, and anal canal. Serovars 1, 3, 6, and 14 have been reclassed into a separate species UREAPLASMA parvum.
Systemic inflammatory response syndrome with a proven or suspected infectious etiology. When sepsis is associated with organ dysfunction distant from the site of infection, it is called severe sepsis. When sepsis is accompanied by HYPOTENSION despite adequate fluid infusion, it is called SEPTIC SHOCK.
A member of the MATRIX METALLOPROTEINASES that cleaves triple-helical COLLAGEN types I, II, and III.

Generation of peroxynitrite and apoptosis in placenta of patients with chorioamnionitis: possible implications in placental abruption. (1/292)

The reaction of nitric oxide (NO) and superoxide results in the formation of peroxynitrite, a potent and relatively long-lived oxidant. In infectious diseases, these molecules are not only bactericidal but also toxic to host cells. Chorioamnionitis is often complicated by premature rupture of membranes and can be associated with placental abruption. These diseases are significant causes of premature low-birth-weight deliveries and consequently the morbidity and mortality of neonates. Lipopolysaccharide, bacterial endotoxin, is known to be elevated in the amniotic fluid of patients with chorioamnionitis. Lipopolysaccharide is known to induce the formation of NO and superoxide. We report here that nitrite/nitrate, stable metabolites of NO, were increased in serum from patients with chorioamnionitis. Immunohistochemical studies demonstrated enhanced expression of inducible NO synthase and formation of nitrotyrosine, a footprint of peroxynitrite, in the placentae from patients with chorioamnionitis and also in patients with placental abruption. Furthermore, apoptotic cell death was also increased in the placentae from patients with both diseases. These results suggest that chorioamnionitis and a portion of placental abruption may share a common cascade of placental injury. Nitric oxide and its metabolities may play an important role in this cascade.  (+info)

Prophylactic cefazolin in amnioinfusions administered for meconium-stained amniotic fluid. (2/292)

OBJECTIVE: To determine if amnioinfusion with an antibiotic solution decreased the rate of clinical chorioamnionitis and puerperal endometritis in patients with meconium-stained amniotic fluid. METHODS: Patients in labor at 36 weeks of gestation or greater with singleton pregnancies and meconium-stained amniotic fluid were randomized to receive either cefazolin, 1 g/1,000 mL, of normal saline (n = 90) or normal saline (n = 93) amnioinfusion. Rates of clinically diagnosed chorioamnionitis and endometritis and of suspected and culture-proven neonatal infection were determined. RESULTS: Between the study and control groups, the incidences of clinical chorioamnionitis (7.8% vs. 8.6%), endometritis (2.4% vs. 3.5%), aggregate intrauterine infection (10.0% vs. 11.8%), suspected neonatal infection (17.8% vs. 21.5%), and proven neonatal infection (0.0% vs. 2.2%) were not significantly different. CONCLUSIONS: Prophylactic use of cefazolin in amnioinfusions did not significantly reduce rates of maternal or neonatal infection in patients with meconium-stained amniotic fluid.  (+info)

Interleukin-8 release from human gestational tissue explants: effects of gestation, labor, and chorioamnionitis. (3/292)

Interleukin-8 (IL-8) is a chemotactic cytokine that has been implicated in the process of human parturition, including the processes of cervical ripening and rupture of fetal membranes. In this study, the in vitro release of IL-8 from human amnion, choriodecidua, and placenta tissues obtained before and after spontaneous labor onset both at term and preterm, was assessed. The effect of chorioamnionitis on IL-8 release was also established. All tissue explants examined released IL-8; however, IL-8 release from choriodecidual explants was significantly (p < 0.02) greater than that observed from amnion and placenta. Furthermore, choriodecidual IL-8 release was significantly (p < 0.001) greater from term tissues (850 +/- 134.4 ng/mg DNA, n = 18) than from preterm tissues (458 +/- 68.8 ng/mg DNA, n = 17). Spontaneous onset of labor, irrespective of the eventual mode of delivery, was not associated with any significant changes in IL-8 release from human gestational tissues compared to not-in-labor tissues, both at term and preterm. IL-8 release from gestational tissues was not significantly different in the absence or presence of chorioamnionitis. These data are in contrast to the previously reported stimulatory effects of bacterial endotoxin on IL-8 release from human gestational tissues. The data are consistent, however, with the suggestion that IL-8 release is an early event in chorioamnionitis that precedes the appearance of clinically overt symptoms.  (+info)

Embryo reduction of multifetal pregnancies following assisted reproduction treatment: a modification of the transvaginal ultrasound-guided technique. (4/292)

First-trimester transvaginal embryo reduction is an effective alternative for the management of multifetal pregnancy in assisted reproduction. We have modified the transvaginal technique by performing an intracardiac embryo puncture until asystolia is verified, without the injection of any substances. Any aspiration of embryo tissues or amniotic fluid was avoided. A total of 149 multifetal pregnancies was reduced to twins (n = 134) or singletons (n = 15) at early gestational age (7.8 +/- 0.8 weeks). Eleven cases (7.3%) of miscarriage, two cases (1.3%) of chorioamnionitis, and 17 cases (11.4%) of transient spotting were recorded as postoperative complications. Vanishing of one embryo occurred in four cases (3.0%) of those reduced to twins. The baby take-home rate was 89.5% for twins and 80.0% for singletons. Pregnancy outcome was analysed and compared with a control group of women with non-reduced multiple pregnancies. The birth weight of singleton pregnancies after reduction was lower (2929 +/- 160 versus 3291 +/- 422 g; P < 0.02). These studies show that early transvaginal intracardiac embryo puncture is an effective and safe technique.  (+info)

Chorioamnionitis decreased incidence of respiratory distress syndrome by elevating fetal interleukin-6 serum concentration. (5/292)

Respiratory distress syndrome (RDS) of newborns is one of the most important factors determining neonatal morbidity and mortality. The interleukin-6 (IL-6) titre in cord sera of RDS-free neonates born to mothers with histological chorioamnionitis was significantly higher than that in RDS-complicated neonates without chorioamnionitis. Maternal administration of glucocorticoid suppressed the IL-6 concentrations in the cord sera of fetuses with chorioamnionitis. The fetuses without chorioamnionitis who suffered from RDS even after maternal glucocorticoid administration showed a similar IL-6 titre to that of RDS-affected neonates without chorioamnionitis. Examination of the mechanism by which IL-6 decreased the incidence of fetal RDS revealed that H441-4, a human pulmonary adenocarcinoma cell line, stimulated with recombinant (r)-IL-6 started the synthesis of mRNA and protein of pulmonary surfactant protein (SP)-A. The present study shows that IL-6 elevation in fetuses with chorioamnionitis promotes fetal lung maturation by inducing SP-A synthesis, thereby decreasing the incidence of RDS in the preterm neonates.  (+info)

Placental abnormalities associated with human immunodeficiency virus type 1 infection and perinatal transmission in Bangkok, Thailand. (6/292)

The effects of human immunodeficiency virus (HIV) type 1 on the placenta and the role of the placenta in mother-to-child HIV-1 transmission are not well understood. Placentas from 78 HIV-infected and 158 HIV-uninfected women were examined as part of a prospective perinatal HIV transmission study in Bangkok. HIV-infected women were more likely than HIV-uninfected women to have chorioamnionitis (odds ratio [OR], 2.1; P=.03), placental membrane inflammation (PMI; OR, 2. 7; P=.02), and deciduitis (OR, 2.3; P=.03) and less likely to have villitis (OR, 0.3; P=.02). However, among HIV-infected women, fewer women who transmitted infection to their child had chorioamnionitis (relative risk [RR], 0.2; P=.03), funisitis (RR, 0.4; P=.1), or PMI (RR undefined; P=.03). These findings suggest that, in this population, HIV-infected women are at increased risk for placental membrane inflammatory lesions, but that placental inflammatory lesions are not associated with increased perinatal HIV transmission.  (+info)

Intra-amniotic endotoxin: chorioamnionitis precedes lung maturation in preterm lambs. (7/292)

The inflammatory and lung maturational effects of intra-amniotic exposure to endotoxin were assessed in fetal lambs. Five hours to 25 days after intra-amniotic injection of endotoxin, preterm lambs were delivered at 119-125 days gestation. Intra-amniotic endotoxin caused an inflammatory cell infiltration in amnion/chorion at 5 h, which persisted for 25 days. At 5-15 h after endotoxin, amnion/chorion cytokine mRNAs increased [12- to 26-fold for interleukin (IL)-1beta, IL-6, and IL-8 mRNA and 3-fold for tumor necrosis factor-alpha mRNA]. At 1-2 days after endotoxin, lung cytokine mRNAs increased 6- to 49-fold. Endotoxin caused modest changes in peripheral white blood cell counts and no significant cytokine mRNA responses in fetal liver, placenta, or jejunum. Lung maturation, as characterized by increased lung volumes and alveolar saturated phosphatidylcholine, occurred at 7 days and persisted for 25 days after endotoxin. We conclude that exposure to a single dose of intra-amniotic endotoxin causes inflammation and increases in cytokine mRNA in amnion/chorion and the fetal lung before lung maturation, consistent with the hypothesis that proinflammatory cytokines signal lung maturation.  (+info)

Intrauterine infection and spontaneous midgestation abortion: is the spectrum of microorganisms similar to that in preterm labor? (8/292)

OBJECTIVE: To determine whether microorganisms associated with intrauterine infection and preterm labor play a contributing role in midgestation abortion. METHODS: A 4 year retrospective review of spontaneous midgestation abortions for which autopsy and microbiological cultures of placental and fetal tissue were performed was conducted for a tertiary obstetrics hospital, which included a regional referral service for perinatal and fetal pathology. One hundred twenty-nine spontaneously delivered, nonmacerated, midgestation fetuses or stillbirths (of between 16 and 26 weeks' gestation) and placentas were examined and cultured for aerobic and anaerobic bacteria, yeasts, and genital mycoplasmas. RESULTS: Microorganisms were recovered in 85 (66%) cases (57% placentas, 49% fetuses). Among the culture positive cases, 81% had histological chorioamnionitis, 28% fetal pneumonitis, 38% clinical signs of infection, and 62% ruptured membranes at the time of miscarriage. These differed significantly from culture-negative cases (44%, 5%, 13%, and 34%, respectively). Group B streptococcus (GBS) was the most significant pathogen, recovered in 21 cases, 13 as the sole isolate, 94% with chorioamnionitis, and 47% in women with intact membranes. Escherichia coli and Ureaplasma urealyticum (22 and 24 cases, respectively) occurred mostly as mixed infections, with ruptured membranes. GBS, MU urealyticum, and Streptococcus anginosus group were individually associated with chorioamnionitis, Bacteroides/Prevotella and S. anginosus with fetal pneumonitis. The spectrum of microorganisms was similar to that in preterm labor at later gestations; however, GBS appeared to be the most significant pathogen in midgestation miscarriage, especially with intact membranes. CONCLUSIONS: Unsuspected intrauterine infection underlies many spontaneous midgestation abortions. GBS is a key pathogen in this setting.  (+info)

Chorioamnionitis is a medical condition that refers to the inflammation of the fetal membranes, specifically the chorion and amnion, which make up the membranous sac surrounding the developing fetus in the uterus. This condition is typically caused by a bacterial infection that ascends from the lower genital tract of the mother and infects the amniotic cavity, leading to an inflammatory response.

The symptoms of chorioamnionitis can vary but often include fever, abdominal pain or tenderness, foul-smelling amniotic fluid, and an elevated white blood cell count in the mother's blood. In some cases, it may also be associated with preterm labor and premature rupture of membranes.

Chorioamnionitis can have serious consequences for both the mother and the baby. It can increase the risk of complications such as sepsis, pneumonia, and endometritis in the mother, and may lead to premature birth, respiratory distress syndrome, and brain injury in the newborn. Treatment typically involves administering antibiotics to the mother to help clear the infection and prevent further complications.

Premature rupture of fetal membranes (PROM) is a medical condition that occurs when the amniotic sac, which surrounds and protects the developing fetus, breaks or ruptures prematurely before labor begins. The amniotic sac is made up of two layers of fetal membranes - the inner amnion and the outer chorion.

In a normal pregnancy, the fetal membranes rupture spontaneously during labor as a sign that the delivery process has begun. However, if the membranes rupture before 37 weeks of gestation, it is considered premature rupture of membranes. PROM can lead to complications such as preterm labor, infection, and fetal distress.

PROM can be classified into two types based on the timing of membrane rupture:

1. Preterm Premature Rupture of Membranes (PPROM): When the membranes rupture before 37 weeks of gestation, it is called preterm premature rupture of membranes. PPROM increases the risk of preterm labor and delivery, which can lead to various complications for the newborn, such as respiratory distress syndrome, brain bleeding, and developmental delays.
2. Term Premature Rupture of Membranes (TPROM): When the membranes rupture at or after 37 weeks of gestation, it is called term premature rupture of membranes. TPROM may not necessarily lead to complications if labor begins soon after the membrane rupture and there are no signs of infection. However, if labor does not start within 24 hours of membrane rupture, the risk of infection increases, and the healthcare provider may consider inducing labor or performing a cesarean delivery.

The exact cause of premature rupture of fetal membranes is not always known, but several factors can increase the risk, including previous PROM, bacterial infections, smoking, substance abuse, and trauma to the uterus. Healthcare providers monitor women with PROM closely for signs of infection and preterm labor and may recommend treatments such as antibiotics, corticosteroids, or hospitalization to reduce the risk of complications.

Amniotic fluid is a clear, slightly yellowish liquid that surrounds and protects the developing baby in the uterus. It is enclosed within the amniotic sac, which is a thin-walled sac that forms around the embryo during early pregnancy. The fluid is composed of fetal urine, lung secretions, and fluids that cross over from the mother's bloodstream through the placenta.

Amniotic fluid plays several important roles in pregnancy:

1. It provides a shock-absorbing cushion for the developing baby, protecting it from injury caused by movement or external forces.
2. It helps to maintain a constant temperature around the fetus, keeping it warm and comfortable.
3. It allows the developing baby to move freely within the uterus, promoting normal growth and development of the muscles and bones.
4. It provides a source of nutrients and hydration for the fetus, helping to support its growth and development.
5. It helps to prevent infection by providing a barrier between the fetus and the outside world.

Throughout pregnancy, the volume of amniotic fluid increases as the fetus grows. The amount of fluid typically peaks around 34-36 weeks of gestation, after which it begins to gradually decrease. Abnormalities in the volume of amniotic fluid can indicate problems with the developing baby or the pregnancy itself, and may require medical intervention.

Pregnancy is a physiological state or condition where a fertilized egg (zygote) successfully implants and grows in the uterus of a woman, leading to the development of an embryo and finally a fetus. This process typically spans approximately 40 weeks, divided into three trimesters, and culminates in childbirth. Throughout this period, numerous hormonal and physical changes occur to support the growing offspring, including uterine enlargement, breast development, and various maternal adaptations to ensure the fetus's optimal growth and well-being.

Premature obstetric labor, also known as preterm labor, is defined as regular contractions leading to cervical changes that begin before 37 weeks of gestation. This condition can result in premature birth and potentially complications for the newborn, depending on how early the delivery occurs. It's important to note that premature labor requires medical attention and intervention to try to stop or delay it, if possible, to allow for further fetal development.

The amnion is the innermost fetal membrane in mammals, forming a sac that contains and protects the developing embryo and later the fetus within the uterus. It is one of the extraembryonic membranes that are derived from the outer cell mass of the blastocyst during early embryonic development. The amnion is filled with fluid (amniotic fluid) that allows for the freedom of movement and protection of the developing fetus.

The primary function of the amnion is to provide a protective environment for the growing fetus, allowing for expansion and preventing physical damage from outside forces. Additionally, the amniotic fluid serves as a medium for the exchange of waste products and nutrients between the fetal membranes and the placenta. The amnion also contributes to the formation of the umbilical cord and plays a role in the initiation of labor during childbirth.

Extraembryonic membranes are specialized structures that form around the developing embryo in utero and provide vital support and protection during fetal development. There are three main extraembryonic membranes: the amnion, the chorion, and the allantois.

The amnion is the innermost membrane that surrounds the embryo itself, forming a fluid-filled sac known as the amniotic cavity. This sac provides a protective cushion for the developing embryo and helps to regulate its temperature and moisture levels.

The chorion is the outermost of the extraembryonic membranes, and it forms the boundary between the developing fetus and the mother's uterine wall. The chorion contains blood vessels that exchange nutrients and waste products with the mother's circulation, allowing for the growth and development of the fetus.

The allantois is a small membranous sac that arises from the developing fetal gut and eventually becomes part of the umbilical cord. It serves as a reservoir for fetal urine and helps to exchange waste products between the fetal and maternal circulations.

Together, these extraembryonic membranes play a critical role in supporting fetal development and ensuring a healthy pregnancy.

The chorion is the outermost fetal membrane that surrounds the developing conceptus (the embryo or fetus and its supporting structures). It forms early in pregnancy as an extraembryonic structure, meaning it arises from cells that will not become part of the actual body of the developing organism. The chorion plays a crucial role in pregnancy by contributing to the formation of the placenta, which provides nutrients and oxygen to the growing embryo/fetus and removes waste products.

One of the most important functions of the chorion is to produce human chorionic gonadotropin (hCG), a hormone that signals the presence of pregnancy and maintains the corpus luteum, a temporary endocrine structure in the ovary that produces progesterone during early pregnancy. Progesterone is essential for preparing the uterus for implantation and maintaining the pregnancy.

The chorion consists of two layers: an inner cytotrophoblast layer and an outer syncytiotrophoblast layer. The cytotrophoblast layer is made up of individual cells, while the syncytiotrophoblast layer is a multinucleated mass of fused cytotrophoblast cells. These layers interact with the maternal endometrium (the lining of the uterus) to form the placenta and facilitate exchange between the mother and the developing fetus.

In summary, the chorion is a vital extraembryonic structure in pregnancy that contributes to the formation of the placenta, produces hCG, and interacts with the maternal endometrium to support fetal development.

Ureaplasma infections refer to conditions caused by the colonization or infection with the bacterial species Ureaplasma urealyticum and Ureaplasma parvum, which are commonly found in the genitourinary tract of humans. These bacteria are part of the normal flora but can cause infections under certain circumstances, such as in immunocompromised individuals or when they ascend to sterile sites like the upper respiratory tract or the amniotic fluid during pregnancy.

Ureaplasma infections can lead to a range of clinical manifestations, including urethritis, cystitis, pelvic inflammatory disease, and respiratory tract infections in newborns. However, it is important to note that the causative role of Ureaplasma spp. in many of these conditions is still a subject of debate, as they can also be found in asymptomatic individuals.

Diagnosis of Ureaplasma infections typically involves nucleic acid amplification tests (NAATs) or culture-based methods to detect the presence of the bacteria in clinical samples. Treatment usually consists of antibiotics that target the bacterial species, such as macrolides or fluoroquinolones, although the development of antimicrobial resistance is a growing concern.

A premature birth is defined as the delivery of a baby before 37 weeks of gestation. This can occur spontaneously or as a result of medical intervention due to maternal or fetal complications. Premature babies, also known as preemies, may face various health challenges depending on how early they are born and their weight at birth. These challenges can include respiratory distress syndrome, jaundice, anemia, issues with feeding and digestion, developmental delays, and vision problems. With advancements in medical care and neonatal intensive care units (NICUs), many premature babies survive and go on to lead healthy lives.

Gestational age is the length of time that has passed since the first day of the last menstrual period (LMP) in pregnant women. It is the standard unit used to estimate the age of a pregnancy and is typically expressed in weeks. This measure is used because the exact date of conception is often not known, but the start of the last menstrual period is usually easier to recall.

It's important to note that since ovulation typically occurs around two weeks after the start of the LMP, gestational age is approximately two weeks longer than fetal age, which is the actual time elapsed since conception. Medical professionals use both gestational and fetal age to track the development and growth of the fetus during pregnancy.

The placenta is an organ that develops in the uterus during pregnancy and provides oxygen and nutrients to the growing baby through the umbilical cord. It also removes waste products from the baby's blood. The placenta attaches to the wall of the uterus, and the baby's side of the placenta contains many tiny blood vessels that connect to the baby's circulatory system. This allows for the exchange of oxygen, nutrients, and waste between the mother's and baby's blood. After the baby is born, the placenta is usually expelled from the uterus in a process called afterbirth.

A premature infant is a baby born before 37 weeks of gestation. They may face various health challenges because their organs are not fully developed. The earlier a baby is born, the higher the risk of complications. Prematurity can lead to short-term and long-term health issues, such as respiratory distress syndrome, jaundice, anemia, infections, hearing problems, vision problems, developmental delays, and cerebral palsy. Intensive medical care and support are often necessary for premature infants to ensure their survival and optimal growth and development.

Infectious pregnancy complications refer to infections that occur during pregnancy and can affect the mother, fetus, or both. These infections can lead to serious consequences such as preterm labor, low birth weight, birth defects, stillbirth, or even death. Some common infectious agents that can cause pregnancy complications include:

1. Bacteria: Examples include group B streptococcus, Escherichia coli, and Listeria monocytogenes, which can cause sepsis, meningitis, or pneumonia in the mother and lead to preterm labor or stillbirth.
2. Viruses: Examples include cytomegalovirus, rubella, varicella-zoster, and HIV, which can cause congenital anomalies, developmental delays, or transmission of the virus to the fetus.
3. Parasites: Examples include Toxoplasma gondii, which can cause severe neurological damage in the fetus if transmitted during pregnancy.
4. Fungi: Examples include Candida albicans, which can cause fungal infections in the mother and lead to preterm labor or stillbirth.

Preventive measures such as vaccination, good hygiene practices, and avoiding high-risk behaviors can help reduce the risk of infectious pregnancy complications. Prompt diagnosis and treatment of infections during pregnancy are also crucial to prevent adverse outcomes.

A newborn infant is a baby who is within the first 28 days of life. This period is also referred to as the neonatal period. Newborns require specialized care and attention due to their immature bodily systems and increased vulnerability to various health issues. They are closely monitored for signs of well-being, growth, and development during this critical time.

Ureaplasma is a genus of bacteria that are commonly found in the lower reproductive tract of humans. They belong to the family Mycoplasmataceae and are characterized by their small size and lack of a cell wall. Ureaplasmas are unique because they have the ability to metabolize urea, which they use as a source of energy for growth.

There are several species of Ureaplasma that can infect humans, including Ureaplasma urealyticum and Ureaplasma parvum. These bacteria can cause a variety of clinical syndromes, particularly in individuals with compromised immune systems or underlying respiratory or genitourinary tract disorders.

Infections caused by Ureaplasma are often asymptomatic but can lead to complications such as urethritis, cervicitis, pelvic inflammatory disease, and pneumonia. In newborns, Ureaplasma infections have been associated with bronchopulmonary dysplasia, a chronic lung disorder that can lead to long-term respiratory problems.

Diagnosis of Ureaplasma infections typically involves the use of nucleic acid amplification tests (NAATs) such as polymerase chain reaction (PCR) assays. Treatment usually consists of antibiotics such as macrolides or fluoroquinolones, which are effective against these bacteria.

Bronchopulmonary dysplasia (BPD) is a chronic lung disease that primarily affects premature infants. It is defined as the need for supplemental oxygen at 28 days of life or beyond, due to abnormal development and injury to the lungs.

The condition was first described in the 1960s, following the introduction of mechanical ventilation and high concentrations of oxygen therapy for premature infants with respiratory distress syndrome (RDS). These treatments, while lifesaving, can also cause damage to the delicate lung tissue, leading to BPD.

The pathogenesis of BPD is complex and involves an interplay between genetic factors, prenatal exposures, and postnatal injury from mechanical ventilation and oxygen toxicity. Inflammation, oxidative stress, and impaired lung development contribute to the development of BPD.

Infants with BPD typically have abnormalities in their airways, alveoli (air sacs), and blood vessels in the lungs. These changes can lead to symptoms such as difficulty breathing, wheezing, coughing, and poor growth. Treatment may include oxygen therapy, bronchodilators, corticosteroids, diuretics, and other medications to support lung function and minimize complications.

The prognosis for infants with BPD varies depending on the severity of the disease and associated medical conditions. While some infants recover completely, others may have long-term respiratory problems that require ongoing management.

'Labor, Obstetric' refers to the physiological process that occurs during childbirth, leading to the expulsion of the fetus from the uterus. It is divided into three stages:

1. The first stage begins with the onset of regular contractions and cervical dilation and effacement (thinning and shortening) until full dilation is reached (approximately 10 cm). This stage can last from hours to days, particularly in nulliparous women (those who have not given birth before).
2. The second stage starts with complete cervical dilation and ends with the delivery of the baby. During this stage, the mother experiences strong contractions that help push the fetus down the birth canal. This stage typically lasts from 20 minutes to two hours but can take longer in some cases.
3. The third stage involves the delivery of the placenta (afterbirth) and membranes, which usually occurs within 15-30 minutes after the baby's birth. However, it can sometimes take up to an hour for the placenta to be expelled completely.

Obstetric labor is a complex process that requires careful monitoring and management by healthcare professionals to ensure the safety and well-being of both the mother and the baby.

A Leukemoid Reaction is not a specific disease but rather a medical finding that can be associated with various underlying conditions. It refers to a significant increase in the number of white blood cells (leukocytes) in the peripheral blood, similar to what is seen in certain types of leukemia. However, in a Leukemoid Reaction, the elevated white blood cell count is not caused by the direct proliferation of malignant cells, as it is in leukemia. Instead, it results from an exaggerated response of the bone marrow to various stimuli such as severe bacterial or viral infections, severe physical trauma, severe burns, or certain types of cancer.

The white blood cell count in a Leukemoid Reaction can exceed 50,000 cells per microliter of blood, which is much higher than the normal range of 4,500-11,000 cells per microliter. The majority of the leukocytes are mature neutrophils, and the differential count shows a left shift, with an increased number of immature forms such as bands, metamyelocytes, and myelocytes.

It is important to distinguish a Leukemoid Reaction from leukemia, as the treatment and prognosis are different. A careful evaluation of the patient's medical history, physical examination, laboratory tests, and imaging studies can help make the correct diagnosis.

Septic abortion is a medical term used to describe a spontaneous abortion or miscarriage that is associated with infection. This occurs when the products of conception, such as the fetal tissue and placenta, are not completely expelled from the uterus, leading to an infection of the uterine lining and potentially the pelvic cavity.

The infection can cause fever, chills, severe abdominal pain, foul-smelling vaginal discharge, and heavy bleeding. If left untreated, septic abortion can lead to serious complications such as sepsis, infertility, and even death. It is important to seek medical attention immediately if you suspect a septic abortion. Treatment typically involves antibiotics to clear the infection and possibly surgical intervention to remove any remaining products of conception.

Adrenergic beta-3 receptor agonists are a type of medication that selectively binds to and activates the beta-3 adrenergic receptors. These receptors are found primarily in adipose tissue, where their activation is thought to increase lipolysis (the breakdown of fat) and thermogenesis (the production of heat).

Beta-3 adrenergic receptor agonists have been studied as a potential treatment for obesity and related conditions such as type 2 diabetes. By increasing lipolysis and thermogenesis, these drugs may help to promote weight loss and improve insulin sensitivity. However, their efficacy in humans has not been firmly established, and more research is needed to determine their safety and effectiveness.

Some examples of adrenergic beta-3 receptor agonists include mirabegron, which is approved for the treatment of overactive bladder, and solabegron, which is being studied for its potential use in treating obesity and other metabolic disorders.

A "term birth" is a medical term that refers to a delivery or pregnancy that has reached 37 weeks or more. It is the normal length of a full-term pregnancy and is considered a healthy and low-risk period for childbirth. Babies born at term have the best chance of being healthy and not experiencing any significant medical issues, compared to those born preterm (before 37 weeks) or postterm (after 42 weeks). The different types of term births are:

* Early Term: Between 37 weeks and 38 weeks, 6 days.
* Full Term: Between 39 weeks and 40 weeks, 6 days.
* Late Term: Between 41 weeks and 41 weeks, 6 days.
* Postterm: 42 weeks or later.

It is important to note that while a term birth is generally considered low-risk, there can still be variations in the health of babies born at different points within this range. For example, research has shown that babies born at 39 weeks have better outcomes than those born at 37 or 38 weeks. Therefore, it is always best to consult with a healthcare provider for individualized guidance and recommendations regarding pregnancy and childbirth.

A domestic sheep (Ovis aries) is not a medical term, but it is an animal species that humans keep and breed for a variety of purposes, including meat, wool, and milk production. While the term "sheep" may appear in medical contexts, such as in discussions of zoonotic diseases (diseases transmissible between animals and humans), the specific definition you are looking for is not medical in nature. Domestic sheep are social herbivores that prefer to eat short grasses and can be found in various parts of the world. They have been domesticated for thousands of years, making them one of the earliest animals to be domesticated by humans.

A "premature infant" is a newborn delivered before 37 weeks of gestation. They are at greater risk for various health complications and medical conditions compared to full-term infants, due to their immature organ systems and lower birth weight. Some common diseases and health issues that premature infants may face include:

1. Respiratory Distress Syndrome (RDS): A lung disorder caused by the lack of surfactant, a substance that helps keep the lungs inflated. Premature infants, especially those born before 34 weeks, are at higher risk for RDS.
2. Intraventricular Hemorrhage (IVH): Bleeding in the brain's ventricles, which can lead to developmental delays or neurological issues. The risk of IVH is inversely proportional to gestational age, meaning that the earlier the infant is born, the higher the risk.
3. Necrotizing Enterocolitis (NEC): A gastrointestinal disease where the intestinal tissue becomes inflamed and can die. Premature infants are at greater risk for NEC due to their immature digestive systems.
4. Jaundice: A yellowing of the skin and eyes caused by an accumulation of bilirubin, a waste product from broken-down red blood cells. Premature infants may have higher rates of jaundice due to their liver's immaturity.
5. Infections: Premature infants are more susceptible to infections because of their underdeveloped immune systems. Common sources of infection include the mother's genital tract, bloodstream, or hospital environment.
6. Anemia: A condition characterized by a low red blood cell count or insufficient hemoglobin. Premature infants may develop anemia due to frequent blood sampling, rapid growth, or inadequate erythropoietin production.
7. Retinopathy of Prematurity (ROP): An eye disorder affecting premature infants, where abnormal blood vessel growth occurs in the retina. Severe ROP can lead to vision loss or blindness if not treated promptly.
8. Developmental Delays: Premature infants are at risk for developmental delays due to their immature nervous systems and environmental factors such as sensory deprivation or separation from parents.
9. Patent Ductus Arteriosus (PDA): A congenital heart defect where the ductus arteriosus, a blood vessel that connects two major arteries in the fetal heart, fails to close after birth. Premature infants are at higher risk for PDA due to their immature cardiovascular systems.
10. Hypothermia: Premature infants have difficulty maintaining body temperature and are at risk for hypothermia, which can lead to increased metabolic demands, poor feeding, and infection.

Histocompatibility, maternal-fetal, refers to the compatibility between the human leukocyte antigens (HLAs) and other antigenic proteins expressed on the fetal tissues and those present in the mother's immune system. The HLAs are a group of proteins encoded by the major histocompatibility complex (MHC) and play a crucial role in the recognition and presentation of foreign peptides to the immune cells.

During pregnancy, the fetal tissues express paternal HLA antigens that can be recognized as non-self by the mother's immune system. However, the maternal-fetal interface, which includes the placenta and decidua, has several mechanisms to prevent the activation of the maternal immune response against the fetus. These mechanisms include the expression of unique HLA molecules (HLA-G, -C, and -E) by the trophoblast cells, which have immunomodulatory functions, as well as the production of anti-inflammatory cytokines and the suppression of pro-inflammatory responses.

Despite these immune tolerance mechanisms, in some cases, the maternal immune system may still recognize the fetal tissues as foreign and mount an immune response, leading to pregnancy complications such as preeclampsia, recurrent miscarriage, or intrauterine growth restriction. The degree of histocompatibility between the mother and fetus can influence the risk of these complications, with a higher degree of mismatch increasing the risk.

In transplantation medicine, the concept of histocompatibility is critical in matching donors and recipients to minimize the risk of rejection. However, in pregnancy, the unique immune environment at the maternal-fetal interface allows for the coexistence of two genetically distinct individuals without the need for full histocompatibility.

A fetus is the developing offspring in a mammal, from the end of the embryonic period (approximately 8 weeks after fertilization in humans) until birth. In humans, the fetal stage of development starts from the eleventh week of pregnancy and continues until childbirth, which is termed as full-term pregnancy at around 37 to 40 weeks of gestation. During this time, the organ systems become fully developed and the body grows in size. The fetus is surrounded by the amniotic fluid within the amniotic sac and is connected to the placenta via the umbilical cord, through which it receives nutrients and oxygen from the mother. Regular prenatal care is essential during this period to monitor the growth and development of the fetus and ensure a healthy pregnancy and delivery.

The umbilical cord is a flexible, tube-like structure that connects the developing fetus to the placenta in the uterus during pregnancy. It arises from the abdomen of the fetus and transports essential nutrients, oxygen, and blood from the mother's circulation to the growing baby. Additionally, it carries waste products, such as carbon dioxide, from the fetus back to the placenta for elimination. The umbilical cord is primarily composed of two arteries (the umbilical arteries) and one vein (the umbilical vein), surrounded by a protective gelatinous substance called Wharton's jelly, and enclosed within a fibrous outer covering known as the umbilical cord coating. Following birth, the umbilical cord is clamped and cut, leaving behind the stump that eventually dries up and falls off, resulting in the baby's belly button.

Respiratory Distress Syndrome (RDS), Newborn is a common lung disorder in premature infants. It occurs when the lungs lack a substance called surfactant, which helps keep the tiny air sacs in the lungs open. This results in difficulty breathing and oxygenation, causing symptoms such as rapid, shallow breathing, grunting noises, flaring of the nostrils, and retractions (the skin between the ribs pulls in with each breath). RDS is more common in infants born before 34 weeks of gestation and is treated with surfactant replacement therapy, oxygen support, and mechanical ventilation if necessary. In severe cases, it can lead to complications such as bronchopulmonary dysplasia or even death.

Amniocentesis is a medical procedure in which a small amount of amniotic fluid, which contains fetal cells, is withdrawn from the uterus through a hollow needle inserted into the abdomen of a pregnant woman. This procedure is typically performed between the 16th and 20th weeks of pregnancy.

The main purpose of amniocentesis is to diagnose genetic disorders and chromosomal abnormalities in the developing fetus, such as Down syndrome, Edwards syndrome, and neural tube defects. The fetal cells obtained from the amniotic fluid can be cultured and analyzed for various genetic characteristics, including chromosomal structure and number, as well as specific gene mutations.

Amniocentesis carries a small risk of complications, such as miscarriage, infection, or injury to the fetus. Therefore, it is generally offered to women who have an increased risk of having a baby with a genetic disorder or chromosomal abnormality, such as those over the age of 35, those with a family history of genetic disorders, or those who have had a previous pregnancy affected by a genetic condition.

It's important to note that while amniocentesis can provide valuable information about the health of the fetus, it does not guarantee a completely normal baby, and there are some risks associated with the procedure. Therefore, the decision to undergo amniocentesis should be made carefully, in consultation with a healthcare provider, taking into account the individual circumstances and preferences of each woman.

Abruptio placentae, also known as placental abruption, is a medical condition that occurs when the placenta separates from the uterus before the baby is born. The placenta is an organ that develops in the uterus during pregnancy to provide oxygen and nutrients to the growing fetus.

In abruptio placentae, the separation of the placenta from the uterus can cause bleeding, which can be serious or life-threatening for both the mother and the baby. The severity of the condition depends on how much of the placenta has separated from the uterus and how much bleeding has occurred.

Abruptio placentae can cause a range of symptoms, including vaginal bleeding, abdominal pain, contractions, and fetal distress. In severe cases, it can lead to preterm labor, low birth weight, and even stillbirth. The exact cause of abruptio placentae is not always known, but risk factors include high blood pressure, smoking, cocaine use, trauma to the abdomen, and advanced maternal age. Treatment may involve hospitalization, bed rest, medication to prevent contractions, or delivery of the baby if the pregnancy is at term.

Endometritis is a medical condition that refers to the inflammation of the endometrium, which is the innermost layer of the uterus. It is often caused by infections, such as bacterial or fungal infections, that enter the uterus through various routes, including childbirth, miscarriage, or surgical procedures.

The symptoms of endometritis may include abnormal vaginal discharge, pelvic pain, fever, and abdominal cramping. In severe cases, it can lead to complications such as infertility, ectopic pregnancy, or sepsis. Treatment typically involves the use of antibiotics to clear the infection, as well as supportive care to manage symptoms and promote healing.

It is important to seek medical attention if you experience any symptoms of endometritis, as prompt treatment can help prevent complications and improve outcomes.

I apologize, but "sheep" is not a term that has a medical definition. It is a common animal with the scientific name Ovis aries. If you have any medical or health-related questions, I would be happy to try and help answer those for you.

Fetal distress is a term used to describe situations where a fetus is experiencing problems during labor or delivery that are causing significant physiological changes. These changes may include an abnormal heart rate, decreased oxygen levels, or the presence of meconium (the baby's first stool) in the amniotic fluid. Fetal distress can be caused by a variety of factors, such as problems with the umbilical cord, placental abruption, maternal high blood pressure, or prolonged labor. It is important to monitor fetal well-being during labor and delivery to detect and address any signs of fetal distress promptly. Treatment may include changing the mother's position, administering oxygen, giving intravenous fluids, or performing an emergency cesarean section.

Fetal death, also known as stillbirth or intrauterine fetal demise, is defined as the death of a fetus at 20 weeks of gestation or later. The criteria for defining fetal death may vary slightly by country and jurisdiction, but in general, it refers to the loss of a pregnancy after the point at which the fetus is considered viable outside the womb.

Fetal death can occur for a variety of reasons, including chromosomal abnormalities, placental problems, maternal health conditions, infections, and umbilical cord accidents. In some cases, the cause of fetal death may remain unknown.

The diagnosis of fetal death is typically made through ultrasound or other imaging tests, which can confirm the absence of a heartbeat or movement in the fetus. Once fetal death has been diagnosed, medical professionals will work with the parents to determine the best course of action for managing the pregnancy and delivering the fetus. This may involve waiting for labor to begin naturally, inducing labor, or performing a cesarean delivery.

Experiencing a fetal death can be a very difficult and emotional experience for parents, and it is important for them to receive supportive care from their healthcare providers, family members, and friends. Grief counseling and support groups may also be helpful in coping with the loss.

"Delivery, Obstetric" is a medical term that refers to the process of giving birth to a baby. It involves the passage of the fetus through the mother's vagina or via Caesarean section (C-section), which is a surgical procedure.

The obstetric delivery process typically includes three stages:

1. The first stage begins with the onset of labor and ends when the cervix is fully dilated.
2. The second stage starts with full dilation of the cervix and ends with the birth of the baby.
3. The third stage involves the delivery of the placenta, which is the organ that provides oxygen and nutrients to the developing fetus during pregnancy.

Obstetric delivery requires careful monitoring and management by healthcare professionals to ensure the safety and well-being of both the mother and the baby. Various interventions and techniques may be used during the delivery process to facilitate a safe and successful outcome, including the use of medications, assisted delivery with forceps or vacuum extraction, and C-section.

Betamethasone is a type of corticosteroid medication that is used to treat various medical conditions. It works by reducing inflammation and suppressing the activity of the immune system. Betamethasone is available in several forms, including creams, ointments, lotions, gels, solutions, tablets, and injectable preparations.

The medical definition of betamethasone is:

A synthetic corticosteroid with anti-inflammatory, immunosuppressive, and vasoconstrictive properties. It is used to treat a variety of conditions such as skin disorders, allergies, asthma, arthritis, and autoimmune diseases. Betamethasone is available in various formulations including topical (creams, ointments, lotions, gels), oral (tablets), and injectable preparations. It acts by binding to specific receptors in cells, which leads to the inhibition of the production of inflammatory mediators and the suppression of immune responses.

It is important to note that betamethasone should be used under the guidance of a healthcare professional, as it can have significant side effects if not used properly.

Meconium is the first stool passed by a newborn infant, typically within the first 48 hours of life. It is composed of materials ingested during fetal development, including intestinal epithelial cells, lanugo (fine hair), amniotic fluid, mucus, bile, and water. The color of meconium is usually greenish-black, and its consistency can range from a thick paste to a liquid. Meconium staining of the amniotic fluid can occur when the fetus has passed meconium while still in the uterus, which may indicate fetal distress and requires careful medical attention during delivery.

"Fetal organ maturity" refers to the stage of development and functional competency of the various organs in a fetus. It is the point at which an organ has developed enough to be able to perform its intended physiological functions effectively and sustainably. This maturity is determined by a combination of factors including structural development, cellular differentiation, and biochemical functionality.

Fetal organ maturity is a critical aspect of fetal development, as it directly impacts the newborn's ability to survive and thrive outside the womb. The level of maturity varies among different organs, with some becoming mature earlier in gestation while others continue to develop and mature until birth or even after.

Assessment of fetal organ maturity is often used in clinical settings to determine the optimal time for delivery, particularly in cases where there are risks associated with premature birth. This assessment typically involves a combination of imaging studies, such as ultrasound and MRI, as well as laboratory tests and physical examinations.

Placental diseases, also known as placental pathologies, refer to a group of conditions that affect the development and function of the placenta during pregnancy. The placenta is an organ that develops in the uterus during pregnancy and provides oxygen and nutrients to the developing fetus while removing waste products.

Placental diseases can have serious consequences for both the mother and the fetus, including preterm labor, growth restriction, stillbirth, and long-term health problems for the child. Some common placental diseases include:

1. Placental abruption: This occurs when the placenta separates from the uterine wall before delivery, causing bleeding and potentially harming the fetus.
2. Placental previa: This is a condition where the placenta implants in the lower part of the uterus, covering the cervix. It can cause bleeding and may require cesarean delivery.
3. Preeclampsia: This is a pregnancy-related disorder characterized by high blood pressure and damage to organs such as the liver and kidneys. Placental dysfunction is thought to play a role in its development.
4. Intrauterine growth restriction (IUGR): This occurs when the fetus does not grow properly due to poor placental function, leading to low birth weight and potential health problems.
5. Chorioamnionitis: This is an infection of the membranes surrounding the fetus, which can lead to preterm labor and other complications.
6. Placental infarction: This occurs when a portion of the placenta dies due to a lack of blood flow, which can lead to growth restriction or stillbirth.

Prompt diagnosis and treatment of placental diseases are essential for ensuring the best possible outcomes for both the mother and the fetus.

Interleukin-1 alpha (IL-1α) is a member of the interleukin-1 cytokine family, which plays a crucial role in the regulation of inflamation and immune responses. IL-1α is primarily produced by activated macrophages, epithelial cells, and fibroblasts. It is a potent proinflammatory cytokine that binds to the interleukin-1 receptor (IL-1R) and activates signaling pathways leading to the expression of genes involved in inflammation, fever, and cellular activation. IL-1α is involved in various physiological processes such as hematopoiesis, bone remodeling, and response to infection or injury. Dysregulation of IL-1α has been implicated in several pathological conditions including autoimmune diseases, atherosclerosis, and cancer.

Chemokine (C-X-C motif) ligand 10 (CXCL10), also known as interferon-gamma-inducible protein 10 (IP-10), is a small cytokine protein that belongs to the chemokine family. Chemokines are a group of signaling proteins that play crucial roles in immune responses and inflammation by recruiting various immune cells to the sites of infection or injury.

CXCL10 is primarily produced by several cell types, including monocytes, endothelial cells, and fibroblasts, in response to stimulation by interferon-gamma (IFN-γ), a cytokine that is critical for the activation of immune cells during an immune response. CXCL10 specifically binds to and activates its receptor, CXCR3, which is expressed on various immune cells such as T lymphocytes, natural killer (NK) cells, and monocytes.

The binding of CXCL10 to CXCR3 triggers a cascade of intracellular signaling events that result in the activation and migration of these immune cells towards the site of inflammation or infection. Consequently, CXCL10 plays essential roles in various physiological and pathological processes, including the recruitment of immune cells to sites of viral infections, tumor growth, and autoimmune diseases.

In summary, Chemokine CXCL10 is a crucial signaling protein that mediates immune cell trafficking and activation during inflammation and immune responses.

Chemokine (C-X-C motif) ligand 11 (CXCL11) is a small cytokine protein that belongs to the chemokine family, which are chemotactic cytokines involved in immune cell trafficking and inflammation. CXCL11 specifically binds to the CXCR3 receptor found on the surface of certain immune cells, including T lymphocytes and natural killer (NK) cells, and plays a role in their recruitment to sites of infection or injury.

CXCL11 is produced by various cell types, including monocytes, endothelial cells, and fibroblasts, in response to pro-inflammatory signals such as interferon-gamma (IFN-γ). It has been shown to have potent chemoattractant properties for Th1 lymphocytes and NK cells, contributing to the development of cell-mediated immune responses. Additionally, CXCL11 has been implicated in several physiological and pathological processes, including angiogenesis, tumorigenesis, and autoimmune diseases.

Ureaplasma urealyticum is a type of bacteria that belongs to the genus Ureaplasma and the family Mycoplasmataceae. It is a non-motile, non-spore forming, microaerophilic organism, which means it requires reduced oxygen levels for growth.

Ureaplasma urealyticum is unique because it can hydrolyze urea to produce ammonia and carbon dioxide, which helps create a more favorable environment for its growth. This bacterium is commonly found in the genitourinary tract of humans and other primates. It can be part of the normal flora but may also cause infections under certain circumstances.

Infections caused by Ureaplasma urealyticum are often associated with the respiratory and urogenital tracts, particularly in premature infants, immunocompromised individuals, or those with underlying medical conditions. The bacterium can lead to various clinical manifestations, such as pneumonia, bronchopulmonary dysplasia, sepsis, meningitis, and urethritis. However, it is important to note that asymptomatic carriage of Ureaplasma urealyticum is also common, making the interpretation of its clinical significance challenging at times.

Diagnosis typically involves nucleic acid amplification tests (NAATs), such as polymerase chain reaction (PCR) assays, to detect the bacterium's genetic material in clinical samples. Treatment usually consists of antibiotics that target mycoplasmas, like macrolides or tetracyclines, but the choice and duration of therapy depend on the patient's age, immune status, and underlying medical conditions.

Sepsis is a life-threatening condition that arises when the body's response to an infection injures its own tissues and organs. It is characterized by a whole-body inflammatory state (systemic inflammation) that can lead to blood clotting issues, tissue damage, and multiple organ failure.

Sepsis happens when an infection you already have triggers a chain reaction throughout your body. Infections that lead to sepsis most often start in the lungs, urinary tract, skin, or gastrointestinal tract.

Sepsis is a medical emergency. If you suspect sepsis, seek immediate medical attention. Early recognition and treatment of sepsis are crucial to improve outcomes. Treatment usually involves antibiotics, intravenous fluids, and may require oxygen, medication to raise blood pressure, and corticosteroids. In severe cases, surgery may be required to clear the infection.

Matrix Metalloproteinase 8 (MMP-8), also known as Collagenase-2 or Neutrophil Collagenase, is an enzyme that belongs to the Matrix Metalloproteinases family. MMP-8 is primarily produced by neutrophils and has the ability to degrade various components of the extracellular matrix (ECM), including collagens, gelatin, and elastin. It plays a crucial role in tissue remodeling, wound healing, and inflammatory responses. MMP-8 is also involved in the pathogenesis of several diseases, such as periodontitis, rheumatoid arthritis, and cancer, where it contributes to the breakdown of the ECM and promotes tissue destruction and invasion.

Confirmed histologic chorioamnionitis without any clinical symptoms is termed subclinical chorioamnionitis and is more common ... Chorioamnionitis has possible associations with numerous neonatal conditions. Intrapartum (during labor) chorioamnionitis may ... Tobacco and alcohol use also puts mothers at risk for chorioamnionitis development. Chorioamnionitis is caught early by looking ... Infiltration of the chorionic plate by neutrophils is diagnostic of (mild) chorioamnionitis. More severe chorioamnionitis ...
"Chorioamnionitis". Stanford Children's Health. Retrieved 2020-04-06. "Cerebral Palsy from Neonatal ... Infections like chorioamnionitis cause an infection in the maternal blood, commonly leading to premature birth and the newborn ...
... chorioamnionitis during pregnancy; neonatal or adult blindness from conjunctivitis; and infertility. Men who have had a ...
It was also used for chorioamnionitis, but a Cochrane Review demonstrated its lack of efficacy. Hsu TL, Hsu TY, Tsai CC, Ou CY ... Cochrane Pregnancy and Childbirth Group) (August 2016). "Amnioinfusion for chorioamnionitis". The Cochrane Database of ...
Chorioamnionitis Decidua Edmondson, N.; Bocking, A.; Machin, G.; Rizek, R.; Watson, C.; Keating, S. (2009). "The prevalence of ... chronic deciduitis in cases of preterm labor without clinical chorioamnionitis". Pediatr Dev Pathol. 12 (1): 16-21. doi:10.2350 ...
Overall perinatal mortality rate is high: 41% to 77%. Recurrence rate is also high: 67% to 100%. Chorioamnionitis Schubert, ... and chorioamnionitis (inflammation of the fetal membranes). Chronic lymphocytic placental inflammation occurs in 5% to 15% of ...
Chorioamnionitis Placentitis (2019, June 25). Care of the umbilicus and management of umbilical disorders. Retrieved from https ... Funisitis is inflammation of the connective tissue of the umbilical cord that occurs with chorioamnionitis. It involves only ...
Lahra MM, Gordon A, Jeffery HE (March 2007). "Chorioamnionitis and fetal response in stillbirth". American Journal of ...
Chorioamnionitis, or intraamniotic infection, is an infection of any combination of the amniotic fluid, placenta, fetus, fetal ... Chorioamnionitis and uterine and maternal skin infections are potential complications of amniocentesis that can occur as a ... The gold standard for diagnosing chorioamnionitis is via a gram stain, glucose level, or culture of the amniotic fluid obtained ... However, in clinical practice, performing an amniocentesis for the purpose of diagnosing chorioamnionitis is rare and instead ...
Inflammation of the fetal membranes is called chorioamnionitis. Balanced inflammation is an important factor in maintaining ...
Bersani I, Thomas W, Speer CP (April 2012). "Chorioamnionitis--the good or the evil for neonatal outcome?". The Journal of ... Infection of the fetal membranes known as chorioamnionitis increases the risk. Intrauterine and neonatal insults (many of which ...
Infection, however, is not shown to be an etiological factor, but a correlation to chorioamnionitis is identified as a risk. ... Mothers who have developed chorioamnionitis during pregnancy put their infant at higher risk for development of Wilson-Mikity ... A Rare Complication of Chorioamnionitis". Taiwanese Journal of Obstetrics and Gynecology. 44 (3): 278-280. doi:10.1016/S1028- ... distress syndrome Bronchopulmonary dysplasia Chronic obstructive pulmonary disease Retrolental Fibroplasia Chorioamnionitis ...
"Chorioamnionitis and Colonization of the Newborn Infant with Genital Mycoplasmas". New England Journal of Medicine. 293 (1): 5- ...
suggestive history of chorioamnionitis, PROM (premature rupture of membranes), etc... Culturing for microorganisms from a ...
This sometimes leads to chorioamnionitis and other negative pregnancy outcomes. Chorioamnionitis is due to the presence of ...
A chorioamnionitis also may lead to sepsis of the mother. Fetal infection is linked to preterm birth and to significant long- ... While the rupture of the membranes may not be followed by labor, usually delivery is indicated as infection (chorioamnionitis) ... It has been suggested that chronic chorioamnionitis is not sufficiently treated by antibiotics alone (and therefore they cannot ...
Antepartum hemorrhage and chorioamnionitis are potential pathological causes for spontaneous Uterine Tachysystole.[citation ...
"The Prevalence of Chronic Deciduitis in Cases of Preterm Labor without Clinical Chorioamnionitis". Pediatric and Developmental ...
BALT can be induced even in fetal lungs after chorioamnionitis or intrauterine pneumonia. Also there is an evidence that ...
"The prevalence of chronic deciduitis in cases of preterm labor without clinical chorioamnionitis". Pediatr Dev Pathol. 12 (1): ...
"Early dynamic changes in pulse oximetry signals in preterm newborns with histologic chorioamnionitis". Pediatric Critical Care ...
Chorioamnionitis is inflammation of the amniotic sac (chorio- + amnion + -itis), usually because of infection. It is a risk ...
Wound infections occur after caesarean sections at a rate of 3-15%. The presence of chorioamnionitis and obesity predisposes ...
... and chorioamnionitis. Other disorders that may increase the risk of a neonatal stroke are blood, homocysteine and lipid ...
These infections can lead to preterm birth, maternal and fetal inflammation, placental inflammation (chorioamnionitis), and ...
The risks of maternal chorioamnionitis or fetal death as a result of the fetoscopic procedure run below 5%. Women are ...
... and the risk of chorioamnionitis is about 30%. Chorioamnionitis is a bacterial infection of the fetal membranes, which can be ... This can lead to chorioamnionitis (an infection of the fetal membranes and amniotic fluid) which can be life-threatening to ... on the other hand it increases the risk of infection or chorioamnionitis. The use of tocolysis has not shown to benefit mom or ... chorioamnionitis) Tobacco use during pregnancy Illicit drug use during pregnancy Having had PROM or preterm delivery in ...
In pregnant women, research suggests that Tdap administration may be associated with an increased risk of chorioamnionitis, a ... Despite the observed increase in incidence of chorioamnionitis in pregnant women following Tdap administration, there has been ... no observed increase in the incidence of preterm birth, for which chorioamnionitis is a risk factor. Research has not discerned ...
Premature rupture of membranes Preterm labour Ascending chorioamnionitis. Increased risk to acquire sexually transmitted ...
Pregnant women with BV have a higher risk of chorioamnionitis, miscarriage, preterm birth, premature rupture of membranes, and ...
Confirmed histologic chorioamnionitis without any clinical symptoms is termed subclinical chorioamnionitis and is more common ... Chorioamnionitis has possible associations with numerous neonatal conditions. Intrapartum (during labor) chorioamnionitis may ... Tobacco and alcohol use also puts mothers at risk for chorioamnionitis development. Chorioamnionitis is caught early by looking ... Infiltration of the chorionic plate by neutrophils is diagnostic of (mild) chorioamnionitis. More severe chorioamnionitis ...
... and perhaps other signs and symptoms of chorioamnionitis, often results in a call to the family practitioner, pediatrician, or ... Does histologic chorioamnionitis correspond to clinical chorioamnionitis?. J Reprod Med. 2008 Jan. 53(1):25-8. [QxMD MEDLINE ... Clinical chorioamnionitis at term VI: acute chorioamnionitis and funisitis according to the presence or absence of ... encoded search term (Chorioamnionitis) and Chorioamnionitis What to Read Next on Medscape ...
A gestation-independent effect of chorioamnionitis on neonatal outcome is much more difficult to assess. The influence of chor ... Chorioamnionitis as a major risk factor for spontaneous preterm birth, especially at earlier gestational ages, contributes to ... Chorioamnionitis: important risk factor or innocent bystander for neonatal outcome? Neonatology. 2011;99(3):177-87. doi: ... The influence of chorioamnionitis on neonatal outcome has become less evident with advances in neonatal care. A short-term ...
... "probable clinical chorioamnionitis," "possible clinical chorioamnionitis," or "histologic chorioamnionitis." RESULTS: We ... The PPV for clinical (probable or possible clinical chorioamnionitis) was 48% and 59% for histologic chorioamnionitis. The PPV ... ICD-10 codes for chorioamnionitis lack specificity for clinical chorioamnionitis and should be a recognized limitation when ... Tdap vaccination during pregnancy and risk of chorioamnionitis and related infant outcomes Journal Article Overview abstract * ...
We report a case of Sneathia amnii as the causative agent of maternal chorioamnionitis and congenital pneumonia resulting in a ... Sneathia amnii and Maternal Chorioamnionitis and Stillbirth, Mozambique. Emerging Infectious Diseases. 2019;25(8):1614-1616. ... bacteria in amniotic fluid can lead to inflammation and histologic chorioamnionitis, amnionitis, or both (10). ... Placental tissue and umbilical cord showed an acute chorioamnionitis with maternal response (inflammation in the membranes, ...
Abstract Background Chorioamnionitis is a risk factor for future asthma development. Animal models of chorioamnionitis ... The association of chorioamnionitis on human neonatal immune cells systemically and within tissues is not known. Methods We ... Conclusion Exposure to chorioamnionitis in utero may affect immune activation in neonates with an increased frequency of RORγt+ ... In the stillborn subjects with chorioamnionitis, we observed a decrease in splenic Foxp3+ cells and an increase in lung CD3+ ...
Chorioamnionitis following preterm premature rupture of membranes and fetal heart rate variability.. Laurent Vandenbroucke, ... INTRODUCTION: The objective of this study was to identify prenatal markers of histological chorioamnionitis (HC) during pPROM ... suggesting that cCTG could be used clinically to diagnoses chorioamnionitis during the pPROM latency period. ...
Chorioamnionitis: Case definition & guidelines for data collection, analysis, and presentation of immunization safety data. ... Authors: Kachikis A; Klein NP; Brighton Collaboration Chorioamnionitis Working Group; et al. ...
Chorioamnionitis answers are found in the Johns Hopkins ABX Guide powered by Unbound Medicine. Available for iPhone, iPad, ... Auwaerter, Paul G. "Chorioamnionitis." Johns Hopkins ABX Guide, The Johns Hopkins University, 2023. Johns Hopkins Guides, www. ... Auwaerter PG. Chorioamnionitis. Johns Hopkins ... Chorioamnionitis [Internet]. In: Johns Hopkins ABX Guide. The Johns Hopkins University; 2023. [cited 2023 November 29]. ...
Infants Born to Women with Chorioamnionitis. Chorioamnionitis is an important risk factor for early-onset GBS disease in women ... Intrapartum treatment of chorioamnionitis can prevent neonatal sepsis (214,215). The diagnosis of chorioamnionitis usually is ... Chorioamnionitis is diagnosed clinically and some of the signs are nonspecific. ¶ Limited evaluation includes blood culture (at ... In an effort to avert neonatal infections, maternal fever alone in labor may be used as a sign of chorioamnionitis and hence ...
What Is Chorioamnionitis? Symptoms, Causes, Diagnosis, Treatment. Chorioamnionitis is a bacterial infection that may take place ...
... including chorioamnionitis, affect thousands of people annually. Chelsie King Garza is a Houston chorioamnionitis ... Causes of Chorioamnionitis. Maternal infection is the primary reason for developing Chorioamnionitis. The bacteria that causes ... Characteristics of a Baby with Chorioamnionitis. Babies born with Chorioamnionitis may display the following symptoms:. *Weak ... Houston Chorioamnionitis Attorney. Chelsie King Garza is a mother of two. She understands the need for good prenatal care and ...
Neonatal outcome amongst infants born to mothers with chorioamnionitis By MediSys Research Admin ...
A diet high in fruits and vegetables decreases the risk of cardiovascular disease and death.[128] A 2021 review found that plant-based diets can provide a risk reduction for CVD if a healthy plant-based diet is consumed. Unhealthy plant-based diets do not provide benefits over diets including meat.[95] A similar meta-analysis and systematic review also looked into dietary patterns and found "that diets lower in animal foods and unhealthy plant foods, and higher in healthy plant foods are beneficial for CVD prevention".[96] A 2018 meta-analysis of observational studies concluded that "In most countries, a vegan diet is associated with a more favourable cardio-metabolic profile compared to an omnivorous diet."[97] Evidence suggests that the Mediterranean diet may improve cardiovascular outcomes.[129] There is also evidence that a Mediterranean diet may be more effective than a low-fat diet in bringing about long-term changes to cardiovascular risk factors (e.g., lower cholesterol level and blood ...
It may take 24 to 72 hours to get lab results.) Newborns whose mothers had chorioamnionitis or who may be at high risk for ... Perinatal infections and chorioamnionitis. In Martin RJ, Fanaroff AA, Walsh MC, eds. Fanaroff and Martins Neonatal-Perinatal ... Infection of the placenta tissues and amniotic fluid (chorioamnionitis) Babies with late-onset neonatal sepsis are infected ...
Histologic Chorioamnionitis: Clinical and Pathologic Factors Associated with Fetal Inflammatory Responses in the Term ... Curtin, W. M., Florescue, H., Metlay, L. A., & Katzman, P. J. (2008). Histologic Chorioamnionitis: Clinical and Pathologic ...
Objective: Histological chorioamnionitis was associated with adverse outcomes. The objective of this study was to develop a ... Histological chorioamnionitis could be predicted with high accuracy in preterm labor with intact membranes before delivery. ... Histological chorioamnionitis (HC) prediction model was developed with maternal independent risk factors before delivery. ... prediction model for histological chorioamnionitis in preterm labor with intact membranes. Materials and Methods: Data were ...
Partial protective effects of melatonin on developing brain in a rat model of chorioamnionitis. ...
Clinical chorioamnionitis was defined as either the "clinical diagnosis" of chorioamnionitis or antibiotic administration ... Clinical chorioamnionitis was defined as either the {"}clinical diagnosis{"} of chorioamnionitis or antibiotic administration ... Clinical chorioamnionitis was defined as either the "clinical diagnosis" of chorioamnionitis or antibiotic administration ... Clinical chorioamnionitis was defined as either the "clinical diagnosis" of chorioamnionitis or antibiotic administration ...
Uterine infection called chorioamnionitis. *High blood pressure disorders like preeclampsia, chronic high blood pressure, or ...
Chorioamnionitis / immunology * Cytomegalovirus Infections / immunology* * Female * Humans * Infant, Newborn * Infant, ...
Tita, A. T. N., & Andrews, W. W. (2010). Diagnosis and management of clinical chorioamnionitis. ...
The Risk of Chorioamnionitis in Nulliparous Women Undergoing Labor Induction with Cervical Foley Balloon in Prelabor Rupture of ... The Risk of Chorioamnionitis in Nulliparous Women Undergoing Labor Induction with Cervical Foley Balloon in Prelabor Rupture of ...
Chorioamnionitis and Outcome in Extremely Preterm Infants. G Fung, K Bawden, P Chow, V Yu ...
you have an infection in the uterus (called chorioamnionitis). *you have certain risk factors (e.g., gestational diabetes or ...
Chorioamnionitis. *Gestational diabetes. *Group B streptococcus during pregnancy. *Incompetent cervix. *Miscarriage. *Pregnancy ..., Chorioamnionitis During Pregnancy, January 2021. *American College of Obstetricians and Gynecologists, ...

No FAQ available that match "chorioamnionitis"

No images available that match "chorioamnionitis"