Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 68
Filtrar
1.
BJOG ; 127(7): 886-896, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32034849

RESUMO

OBJECTIVES: To test whether providing psychological self-help materials would significantly lower the incidence of post-traumatic stress disorder (PTSD) at 6-12 weeks postnatally. DESIGN: Open-label randomised controlled trial, with blinded outcome assessment. SETTING: Community midwifery services in two National Health Service (NHS) trusts in the North West. SAMPLE: A cohort of 2419 women receiving normal NHS postnatal care. METHODS: Midwives screened women for traumatic birth experience; 678 women who screened positively (28.1%) were randomly allocated to self-help with usual care (n = 336) or to usual care alone (n = 342). The self-help materials were a leaflet and online film designed to prevent the development of PTSD after trauma exposure through explaining how to manage early psychological responses. MAIN OUTCOME MEASURE: The primary outcome was a composite of diagnostic and subdiagnostic PTSD at 6-12 weeks postnatally using the gold-standard Clinician-Administered PTSD Scale (CAPS-5) interview. RESULTS: Of the 678 women correctly randomised plus the nine women randomised in error, 478 (70.5%) were followed up. Diagnostic or subdiagnostic PTSD rates at follow-up did not differ between groups who received self-help (26.7%, 65/243) or usual care alone (26.2%, 64/244) (intention-to-treat analysis: RR 1.02, 95% CI 0.68-1.53). Findings remained consistent in the per-protocol analysis (RR 1.04, 95% CI 0.85-1.27). Women viewed the materials very positively. There were no adverse effects. Health economic micro-costing indicated implementation would be very low cost. CONCLUSIONS: Many women experience a traumatic birth and risk developing PTSD, but self-help strategies without professional support are insufficient and should not be routinely introduced. TWEETABLE ABSTRACT: Self-help information alone does not reduce the number of women developing PTSD after a traumatic childbirth.


Assuntos
Intervenção Baseada em Internet , Complicações do Trabalho de Parto , Folhetos , Parto/psicologia , Qualidade de Vida , Transtornos de Estresse Pós-Traumáticos , Adulto , Erros de Diagnóstico/prevenção & controle , Feminino , Humanos , Tocologia/métodos , Complicações do Trabalho de Parto/diagnóstico , Complicações do Trabalho de Parto/prevenção & controle , Complicações do Trabalho de Parto/psicologia , Gravidez , Técnicas Psicológicas , Autogestão/métodos , Transtornos de Estresse Pós-Traumáticos/diagnóstico , Transtornos de Estresse Pós-Traumáticos/etiologia , Transtornos de Estresse Pós-Traumáticos/prevenção & controle , Transtornos de Estresse Pós-Traumáticos/psicologia , Resultado do Tratamento
2.
J Obstet Gynaecol ; 36(2): 208-12, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26479679

RESUMO

This study sought to identify delivery complications associated with stillbirth labour and delivery. We conducted a retrospective chart review evaluating stillbirth demographics, pregnancy and maternal risk factors, and complications of labour and delivery. We performed bivariable analysis and multivariable logistic regression to evaluate factors associated with medical complications and variations by race. Our cohort included 543 mothers with stillbirth, of which two-thirds were African-American. We noted high rates of shoulder dystocia, clinical chorioamnionitis, postpartum haemorrhage and retained placenta in women with stillbirths. Thirty-three women (6%) experienced at least one serious maternal complication. Complication rates did not vary by maternal race. Providers who perform obstetrical care should be alert to the high rate of maternal medical complications associated with labour and delivery of a stillbirth foetus.


Assuntos
Complicações do Trabalho de Parto/epidemiologia , Natimorto , Adulto , Apresentação Pélvica/epidemiologia , Corioamnionite/epidemiologia , Estudos Transversais , Distocia/epidemiologia , Feminino , Humanos , Michigan/epidemiologia , Complicações do Trabalho de Parto/etnologia , Placenta Retida/epidemiologia , Hemorragia Pós-Parto/epidemiologia , Gravidez , Estudos Retrospectivos , Adulto Jovem
4.
Child Care Health Dev ; 34(4): 491-502, 2008 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-18485027

RESUMO

AIM: To investigate the application of an expanded Transactional Stress and Coping Model for the psychological adjustment of non-chronically ill, African-American siblings of children with sickle cell disease (SCD). METHODS: Ninety-seven siblings (M = 11.24 years) from 65 families who care for a child with SCD participated. Primary caregivers completed the Coping Health Inventory for Parents, the Family Relations Scale and the Child Behaviour Checklist, while siblings completed the Kidcope, the Children's Self-Efficacy for Peer Interaction Scale, and the Social Support Scale for Children. RESULTS: Family processes were predictive of sibling adjustment, revealing that family coping, expressiveness and support improved adjustment, while family conflict predicted poor adjustment. CONCLUSION: Findings suggest that family-centered interventions stressing family expressiveness and support, while minimizing conflict, will contribute to sibling psychological adjustment.


Assuntos
Adaptação Psicológica , Anemia Falciforme/psicologia , Negro ou Afro-Americano/psicologia , Irmãos/psicologia , Estresse Psicológico/psicologia , Adolescente , Negro ou Afro-Americano/genética , Anemia Falciforme/genética , California/etnologia , Criança , Avaliação da Deficiência , Família/psicologia , Feminino , Humanos , Masculino , Modelos Teóricos , Autoeficácia , Apoio Social , Estatística como Assunto , Fatores de Tempo
5.
J Perinatol ; 37(12): 1330-1334, 2017 12.
Artigo em Inglês | MEDLINE | ID: mdl-29192693

RESUMO

OBJECTIVE: Perinatal loss (stillbirth or early infant death) is often a sudden, unexpected event for families. We evaluated who communicates the loss to the parents and who is there for support at the delivery or death. STUDY DESIGN: We conducted a mail survey of 900 bereaved and 500 live-birth mothers to assess emotional, physical and reproductive health outcomes. RESULTS: We had a 44% response rate at 9 months after birth or loss from 377 bereaved mothers and 232 with surviving infants. Bereaved women were less likely to have hospital staff or family members present at delivery. African-American (versus Caucasian) mothers were half as likely to have first heard about their stillbirth from a physician or midwife. CONCLUSION: This is the first large study documenting who communicates perinatal death to families and who is present for support. Hospitals should be aware that many bereaved families may lack support at critical times.


Assuntos
Mães/psicologia , Relações Enfermeiro-Paciente , Morte Perinatal , Relações Médico-Paciente , Natimorto/psicologia , Revelação da Verdade , Adulto , Estudos de Casos e Controles , Família/psicologia , Feminino , Humanos , Lactente , Recém-Nascido , Estudos Longitudinais , Tocologia , Gravidez , Apoio Social , Inquéritos e Questionários , Adulto Jovem
6.
Semin Hematol ; 38(1 Suppl 1): 77-84, 2001 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-11206966

RESUMO

We designed a study to obtain follow-up on behavioral aspects of compliance with home deferoxamine administration, explore social factors that might influence compliance, and evaluate the effectiveness of a pilot intervention program for patients with thalassemia or sickle cell disease who were receiving chronic transfusion therapy. Thirty-one patients between the ages of 6 and 21 years and their primary caregivers were administered a 24-hour recall Interview about home care. Fifteen went on to participate in a Desferal Day Camp, which combined educational strategies with peer support. Behavioral measures of treatment adherence were similar for most patients with sickle cell disease and thalassemia. Patient compliance with days of deferoxamine administration at follow-up was associated with initial compliance, perceived support, and patient and caregiver knowledge. Increased sharing of responsibilities for home care by patients and caregivers and caregiver knowledge were associated with lower ferritin and liver iron levels. A subsample of 3 patients who were extremely noncompliant with days of deferoxamine administration was examined separately; these patients were found to be moderately compliant with the number of hours and amount of deferoxamine administered and to share fewer home care tasks with primary caregivers. Participation in Desferal Day Camp did not result in increases in knowledge or peer support, suggesting that future interventions should focus on family support and on improving self-regulatory skills. The crucial role of collaboration among patients, families, and health care providers in developing interventions to enhance adherence was emphasized.


Assuntos
Desferroxamina/administração & dosagem , Cooperação do Paciente/psicologia , Adolescente , Adulto , Anemia Falciforme/sangue , Anemia Falciforme/terapia , Transfusão de Sangue/métodos , Cuidadores/psicologia , Criança , Coleta de Dados , Assistência Domiciliar/psicologia , Humanos , Quelantes de Ferro/administração & dosagem , Reação Transfusional , Talassemia beta/sangue , Talassemia beta/terapia
7.
Free Radic Biol Med ; 21(6): 783-90, 1996.
Artigo em Inglês | MEDLINE | ID: mdl-8902524

RESUMO

Chronic exposure to low levels of environmentally derived arsenite are associated with vascular diseases, such as arteriosclerosis. However, the cellular and molecular mechanisms for vascular disease in response to arsenic are not known. These studies investigated the hypothesis that nonlethal levels of arsenic increase intracellular oxidant levels, promote nuclear translocation of trans-acting factors, and are mitogenic. Incubation of second passage vascular endothelial cells with less than 5 microM arsenite for 4 h increased incorporation of [3H]thymidine into genomic DNA, while higher concentrations failed to stimulate or inhibit DNA synthesis. Within 1 h following addition of noncytotoxic concentrations of arsenite, oxidants accumulated and thiol status increased. During this time period, there was increased nuclear retention of NF-kappa B binding proteins and nuclear translocation of NF-kappa B also occurred in response to 100 microM H2O2. Supershift analysis demonstrated that p65/p50 heterodimers accounted for the majority of proteins binding consensus kappa B sequences in cells treated with arsenite or oxidants. The antioxidants, N-acetylcysteine or dimethylfumaric acid, increased intracellular thiol status and prevented both oxidant formation and translocation of NF-kappa B binding proteins in response to arsenite. These data suggest that arsenite initiates vascular dysfunction by activating oxidant-sensitive endothelial cell signaling.


Assuntos
Arsenitos/farmacologia , Endotélio Vascular/efeitos dos fármacos , Endotélio Vascular/metabolismo , NF-kappa B/metabolismo , Oxidantes/metabolismo , Estresse Oxidativo , Compostos de Sódio/farmacologia , Animais , Antioxidantes/farmacologia , Aorta , Núcleo Celular/efeitos dos fármacos , Núcleo Celular/metabolismo , Células Cultivadas , DNA/biossíntese , Glutationa/metabolismo , Peróxido de Hidrogênio/farmacologia , Cinética , Compostos de Sulfidrila/metabolismo , Suínos
8.
Environ Health Perspect ; 105 Suppl 5: 1131-7, 1997 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-9400712

RESUMO

Exposure of low-passage endothelial cells in culture to nonlethal amounts of asbestos, but not refractory ceramic fiber-1, increases cell motility and gene expression. These changes may be initiated by the fibers mimicking matrix proteins as ligands for receptors on the cell surface. In the present study, 1- to 3-hr exposures of endothelial cells to 5 mg/cm2 of chrysotile asbestos caused marked cell elongation and motility. However, little morphological change was seen when chrysotile was added to cells pretreated with either mannosamine to prevent assembly of glycophosphatidylinositol (GPI)-anchored receptors or with herbimycin A to inhibit tyrosine kinase activity. Affinity purification of GPI-anchored urokinase-type plasminogen activator receptor (uPAR) from chrysotile-exposed cells demonstrated that asbestos altered the profile of proteins and phosphoproteins complexed with this receptor. Tyrosine kinase activities in the complexes were also increased by asbestos. Immunoprecipitations with selective monoclonal antibodies demonstrated that both chrysotile and crocidolite asbestos increase kinase activities associated with p60 Src or p120 focal adhesion kinase (FAK). Further, chrysotile also changed the profile of proteins and phosphoproteins associated with FAK in intact cells. These data suggest that asbestos initiates endothelial cell phenotypic change through interactions with uPAR-containing complexes and that this change is mediated through tyrosine kinase cascades.


Assuntos
Amianto/toxicidade , Carcinógenos/toxicidade , Inibidor 1 de Ativador de Plasminogênio/fisiologia , Inibidor 2 de Ativador de Plasminogênio/fisiologia , Transdução de Sinais/efeitos dos fármacos , Animais , Adesão Celular/efeitos dos fármacos , Endotélio/citologia , Endotélio/efeitos dos fármacos , Regulação da Expressão Gênica/efeitos dos fármacos , Testes de Precipitina , Proteínas Tirosina Quinases/metabolismo , Suínos , Quinases da Família src/biossíntese , Quinases da Família src/genética
9.
Am J Med Genet ; 47(3): 426-31, 1993 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-8135294

RESUMO

Chondrodysplasia punctata has been classified into two major types including the rare autosomal recessive "rhizomelic type" and a more common but genetically heterogenous nonrhizomelic type (referred to by some authors as "Conradi-Hünermann (CH) type"). The former is typically lethal, manifesting serious anomalies, and allowing several instances of confident prenatal diagnosis. The latter being milder has more subtle anomalies and prenatal diagnosis has been uncommonly reported (confined to cases diagnosed incidentally by flat-plate X-ray examination of the mother in late third trimester, and a case found by directed ultrasound performed in a Mendelian affected mother). Cases included 1) a young primigravida thought to be affected with Conradi-Hünermann syndrome presented at 16 weeks gestation for prenatal diagnosis and counseling. Ultrasound examination of the fetus detected assymetric limb shortness allowing the presumptive diagnosis of an affected fetus which was confirmed after delivery near term. 2) A normal 38-year-old multipara with unremarkable family history underwent routine fetal ultrasound evaluation at 18 weeks gestation. Disorganization of the spine, premature echogenicity of femoral epipheses, and frontal bossing with depressed nasal bridge were described. Neonatal examination confirmed suspicion of CH. Case 1 demonstrates the importance of solid clinical diagnosis in Mendelian malformation-affected parents for directing prenatal diagnostic efforts. Case 2 represents the first index case of CH diagnosed antenatally by ultrasound. Diagnostic clues which must be considered in establishing these diagnoses are discussed, as are some of the difficulties and limitations in antenatal counseling such cases.


Assuntos
Condrodisplasia Punctata/diagnóstico por imagem , Doenças Fetais/diagnóstico por imagem , Ultrassonografia Pré-Natal , Adulto , Condrodisplasia Punctata/embriologia , Condrodisplasia Punctata/genética , Feminino , Doenças Fetais/genética , Dedos/anormalidades , Humanos , Recém-Nascido , Masculino , Gravidez
10.
Obstet Gynecol ; 85(5 Pt 2): 847-50, 1995 May.
Artigo em Inglês | MEDLINE | ID: mdl-7724134

RESUMO

BACKGROUND: Abnormalities of the upper and lower extremities, such as club feet, rocker-bottom feet, and abnormal hand posturing, are frequently detected prenatally in trisomy 18 fetuses. Aplasia of the radius, usually associated with the absence or hypoplasia of the first metacarpal and thumb, is the most prevalent reduction malformation in trisomy 18 infants. Because this anomaly is easily missed during prenatal ultrasonography, the role of prenatal detection of this particular preaxial upper limb reduction has not been emphasized. CASES: Three cases of trisomy 18 in which preaxial upper limb reduction (radial aplasia) was identified prenatally by ultrasound are reported. Although in all cases there were additional ultrasonographic findings suggestive of trisomy 18, the prenatal detection of preaxial upper limb reduction facilitated the diagnosis. CONCLUSION: Ultrasonographic examination of fetal forearms for the detection of preaxial upper limb reduction should be a routine part of the prenatal evaluation of fetuses in whom trisomy 18 is suspected.


Assuntos
Anormalidades Múltiplas/diagnóstico por imagem , Cromossomos Humanos Par 18 , Rádio (Anatomia)/anormalidades , Trissomia , Adulto , Amniocentese , Extremidades/diagnóstico por imagem , Feminino , Morte Fetal , Humanos , Recém-Nascido , Cariotipagem , Deformidades Congênitas dos Membros , Idade Materna , Pessoa de Meia-Idade , Gravidez , Gravidez de Alto Risco , Rádio (Anatomia)/diagnóstico por imagem , Ultrassonografia Pré-Natal
11.
Obstet Gynecol ; 84(4): 505-10, 1994 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-8090384

RESUMO

OBJECTIVE: To test previously proposed but unproven antenatal ultrasound prognostic criteria in fetal gastroschisis. METHODS: Thirty consecutive gastroschisis-affected pregnancies and their outcomes were reviewed retrospectively. Data were tabulated by review of antenatal ultrasound videotapes, with blinded comparison to indicators of short- and long-term infant outcomes obtained from the medical records. Criteria of previous reports were applied to these data, focusing on their ability to prognosticate effectively. RESULTS: Applying a criterion of 10 mm bowel dilatation proved minimally useful in prognosticating infant outcomes. However, a stricter 17-mm criterion for clinically important bowel dilatation provided prognostic information, with remarkable improvement in specificity (75 versus 37%) and positive predictive value (55 versus 37%) for infant morbidity, with comparatively little loss of sensitivity (71 versus 85%). CONCLUSIONS: Bowel dilated more than 17 mm on antenatal ultrasound appears to be associated with increased short- and long-term infant morbidity. Whether this finding warrants obstetric intervention in the preterm gastroschisis-affected pregnancy with substantial bowel dilatation remains to be determined.


Assuntos
Estômago/anormalidades , Estômago/diagnóstico por imagem , Ultrassonografia Pré-Natal , Anormalidades Congênitas/epidemiologia , Feminino , Idade Gestacional , Humanos , Recém-Nascido , Valor Preditivo dos Testes , Gravidez , Prognóstico , Estudos Retrospectivos , Sensibilidade e Especificidade , Resultado do Tratamento
12.
Obstet Gynecol ; 76(3 Pt 1): 378-80, 1990 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-2381615

RESUMO

Perinatal characteristics of 105 singleton live infants born during the last 5 years and suspected phenotypically of having karyotypic abnormalities were studied; 33 abnormal karyotypes were found. These pregnancies were compared with all pregnancies delivering at our hospital during the same time period. A retrospective analysis using our perinatal data base examined maternal age, gravidity, parity, race, mode of delivery, birth weight, gestational age at delivery, Apgar scores, and size for gestational age. Within the phenotypically abnormal group, karyotypically normal and abnormal infants showed no significant differences in primary cesarean rates, low Apgar scores, mean birth weight, or appropriateness of size for gestational age. Karyotypically abnormal infants were smaller than the general population (P less than .001) and had lower Apgar scores (P less than .05) but were just as likely to be full-term (66.7 versus 70.3%). These chromosomally abnormal pregnancies had a higher primary cesarean rate than the general population (30.3 versus 15.4%; P less than .001). Black infants undergoing genetic studies had a 37% rate of karyotypic abnormalities, which was significantly higher than the 12.5% rate in the white infants tested (P less than .05). The term black infant with phenotypic abnormalities suggestive of karyotypic abnormalities may be less likely to be recognized and appropriately tested. Increased awareness of phenotypic abnormalities with subsequent genetic testing seems warranted.


Assuntos
Aberrações Cromossômicas/genética , Cariotipagem , Cesárea/estatística & dados numéricos , Aberrações Cromossômicas/diagnóstico , Transtornos Cromossômicos , Humanos , Recém-Nascido de Baixo Peso , Recém-Nascido , Recém-Nascido Prematuro , Fenótipo , Estudos Retrospectivos
13.
Obstet Gynecol ; 87(5 Pt 2): 838-40, 1996 May.
Artigo em Inglês | MEDLINE | ID: mdl-8677108

RESUMO

BACKGROUND: Non-immune fetal hydrops is a heterogeneous disorder with a mortality rate of 50-98%. Resolution of non-immune fetal hydrops is rare but has been reported to occur spontaneously or after targeted therapeutic measures. CASE: A euthyroid gravida with Graves disease presented with a history of three prior perinatal deaths between 26 and 28 weeks' gestation, all associated with fetal hydrops. In the current pregnancy, the fetus developed hydrops at 24 weeks' gestation. Fetal hyperthyroidism, with high-output cardiac failure, was diagnosed with fetal blood sampling. After maternal therapy with propylthiouracil, resolution of the non-immune hydrops were documented and a healthy neonate subsequently delivered to term. The neonate developed transient hyperthyroidism after delivery, which required treatment for 10 weeks. CONCLUSION: Non-immune hydrops occurring as a result of fetal hyperthyroidism with high output cardiac failure is treatable with propylthiouracil.


Assuntos
Antitireóideos/uso terapêutico , Doença de Graves/tratamento farmacológico , Hidropisia Fetal/tratamento farmacológico , Hipertireoidismo/tratamento farmacológico , Complicações na Gravidez/tratamento farmacológico , Propiltiouracila/uso terapêutico , Adulto , Feminino , Doença de Graves/complicações , Insuficiência Cardíaca/etiologia , Humanos , Hidropisia Fetal/etiologia , Hipertireoidismo/etiologia , Recém-Nascido , Gravidez , Recidiva
14.
Fertil Steril ; 75(2): 391-3, 2001 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-11172845

RESUMO

OBJECTIVE: We have previously reported a correlation between the starting number of embryos for multifetal pregnancy reduction (MFPR) and discordance in size during the first trimester. Here we evaluated the correlation between the degree of discordance and length of gestation in the remaining fetuses. DESIGN: Observational clinical series. SETTING: Academic medical center with a single physician who performs a large number of MFPRs. PATIENT(S): Analysis of 252 consecutive MFPRs from a 2.5-year period (1996-1998). INTERVENTION(S): MFPR for patients with multifetal pregnancies. MAIN OUTCOME MEASURE(S): We evaluated the correlation between the degree of discordance in embryo size, as measured by the greatest difference in crown-rump length (CRL) (delta max), and the length of gestation. RESULT(S): Embryo size discordance was related to length of gestation of the remaining fetuses after MFPR. Of 72 patients with a delta max >5 mm, the rate of severe premature birth (delivery at <28 weeks' gestation) was 9.7%, compared with 1.7% for patients with a delta max <5 mm (P<.01). Of patients with severe premature birth, 70% had delta max >5 mm, compared with less than 30% in patients who delivered after 28 weeks (P<.05). CONCLUSION(S): Variations in embryo growth patterns in multifetal pregnancies may be observed even in the first trimester, which may be predictive of late pregnancy outcomes. With a delta max > or =5 mm, there is a significant increase in the risk of severe premature birth (delivery at <28 weeks).


Assuntos
Embrião de Mamíferos/anatomia & histologia , Trabalho de Parto Prematuro/diagnóstico , Redução de Gravidez Multifetal , Estatura Cabeça-Cóccix , Feminino , Idade Gestacional , Humanos , Gravidez , Gravidez Múltipla
15.
Hear Res ; 69(1-2): 1-9, 1993 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-8226328

RESUMO

Hair cells and auditory nerve dendrites in the inner ear are innervated by pontine neurons that have been demonstrated by immunochemical techniques to contain several neurotransmitters, including acetylcholine and the opioid peptide enkephalins and dynorphins. The functions of these nerve fibers are not known, but may involve modifying auditory sensitivity to low intensity stimuli. In the guinea pig the opioid pathways originate in the lateral superior olivary region. A recent study in the gerbil has reported cells expressing preproenkephalin mRNA present only in the ventral nucleus of the trapezoid body, and not in the superior olivary region. In the present study, a non-radioisotopically labeled in situ hybridization method was used to identify cells expressing mRNA coding for preproenkephalin in rat pontine neurons, specifically in the ventral nucleus of the trapezoid body. These cells may represent an enkephalin-containing medial olivocochlear system in the rat, the origin of the lateral system in the rat that differs markedly from the better-studied guinea pig and cat, or a non-olivocochlear enkephalin-containing system.


Assuntos
Núcleo Coclear/metabolismo , Encefalinas/genética , Núcleo Olivar/metabolismo , Ponte/metabolismo , Precursores de Proteínas/genética , RNA Mensageiro/metabolismo , Animais , Núcleo Coclear/citologia , DNA Complementar/química , Encefalinas/biossíntese , Hibridização In Situ , Núcleo Olivar/citologia , Ponte/citologia , Precursores de Proteínas/biossíntese , RNA Mensageiro/genética , Ratos
16.
J Matern Fetal Neonatal Med ; 16(3): 146-57, 2004 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-15590440

RESUMO

BACKGROUND: Preterm premature rupture of membranes (PROM) is associated with one-third of preterm births. In about 50% of preterm PROM cases, the fetuses will elicit a fetal inflammatory response syndrome (FIRS). FIRS is associated with the impending onset of preterm labor, periventricular leukomalacia, neonatal sepsis, and long-term handicap, including the development of bronchopulmonary dysplasia and cerebral palsy. The fetal myocardium is a potential target organ of proinflammatory cytokines released during FIRS. The objective of this study was to determine whether preterm PROM is associated with functional changes in the fetal heart, as determined by fetal echocardiography. METHODS: A retrospective study was conducted to assess the diastolic function of fetuses with preterm PROM with documented microbial invasion of the amniotic cavity (n = 25), preterm PROM without microbial invasion of the amniotic cavity (n = 42), and fetuses from normal pregnancies (control group = 150). Pregnancies with multiple gestation, fetal distress, fetuses that were small for gestational age, and major congenital anomalies were excluded. Fetal echocardiography studies were performed with two-dimensional ultrasound, color Doppler imaging and pulsed Doppler ultrasound. Non-parametric statistics were used for comparisons. A p value of < 0.05 was considered significant. RESULTS: The prevalence of positive amniotic fluid cultures for micro-organisms in patients with preterm PROM was 35.8% (24/67). Ureaplasma urealyticum was the most frequent isolate, either alone (41.7%; 10/24) or with other micro-organisms (29.2%; 7/24). Fetuses with preterm PROM had a higher delta early diastolic filling/atrial contraction (E/A) peak velocity ratio, a higher delta E/A velocity-time integral (VTI) ratio, a lower delta A peak velocity, a lower delta A VTI, and a lower A VTI/total VTI ratio in the mitral valve compared to those with uncomplicated pregnancies. The delta E/A peak velocity ratio was significantly higher and the delta A VTI significantly lower in fetuses with preterm PROM and microbial invasion of the amniotic cavity than in those with preterm PROM without microbial invasion of the amniotic cavity. CONCLUSIONS: Preterm PROM is associated with changes in fetal cardiac function consistent with increased left ventricular compliance. These observations were also noted in fetuses with microbial invasion of the amniotic cavity. Our findings suggest that fetal cardiac function is altered in preterm PROM and, in particular, in cases with intra-amniotic infection.


Assuntos
Ecocardiografia , Coração Fetal/fisiopatologia , Ruptura Prematura de Membranas Fetais/fisiopatologia , Nascimento Prematuro , Ultrassonografia Pré-Natal , Feminino , Coração Fetal/diagnóstico por imagem , Ruptura Prematura de Membranas Fetais/diagnóstico por imagem , Humanos , Valva Mitral/embriologia , Gravidez , Veias Pulmonares/embriologia , Veias Pulmonares/fisiopatologia , Estudos Retrospectivos , Valva Tricúspide/embriologia , Disfunção Ventricular Esquerda/embriologia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA