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Median Gestation (median + gestation)

Distribution by Scientific Domains

Medical Sciences	83%

Selected Abstracts

Infection and fetal loss in the mid-second trimester of pregnancy

AUSTRALIAN AND NEW ZEALAND JOURNAL OF OBSTETRICS AND GYNAECOLOGY, Issue 3 2010
Ben ALLANSON
Introduction:, Chorioamnionitis is a common cause of second trimester pregnancy loss, usually due to ascending infection. This study investigates the prevalence and bacteriology of chorioamnionitis in cases of spontaneous pregnancy loss in previable gestations (16,22 weeks). Methods:, Fetal losses between 16- and 22-week gestation were identified from the institutional database over a three-year period. Cases with an autopsy were identified, pathology reports reviewed, and maternal features noted (clinical symptoms, blood count and vaginal culture results). Second trimester medical termination for fetal abnormality during the same time period served as controls for the confounding influence of labour. Results:, A total of 101 cases of spontaneous non-anomalous non-macerated fetal losses and 103 control cases of induced loss for fetal anomaly were identified. Median gestation of cases was 19 weeks (interquartile range (IQR) 17, 21) and of controls was 20 weeks (IQR 19, 21). Maternal white cell count was higher in cases (median 13.6 IQR 10.8, 16.6) than in controls (9.9 IQR 7.6, 11.5) (P < 0.01). Seventy-eight (77.2%) of 101 cases and no controls had histological chorioamnionitis. A fetal reaction was identified in 48.7% of cases with chorioamnionitis, and the frequency of fetal reaction increased as gestation advanced (5.3% at 16-week gestation vs 33.3% at 22-week gestation). In cases with chorioamnionitis 36/76 (47.4%) were culture positive, whereas 4/25 (16%) without chorioamnionitis were culture positive. Conclusion:, In otherwise normal fetuses, chorioamnionitis is a common finding in mid-trimester pregnancy loss. Routine culture methods have a low sensitivity for isolation of the causative micro-organisms. This inflammatory process seems to predate the onset of labour and appears a primary mechanism in the aetiology of such losses. [source]

Selective fetoscopic laser ablation in 100 consecutive pregnancies with severe twin,twin transfusion syndrome

AUSTRALIAN AND NEW ZEALAND JOURNAL OF OBSTETRICS AND GYNAECOLOGY, Issue 1 2009
Robert B. CINCOTTA
Aims: To report the perinatal outcomes of a large series of twin pregnancies with severe twin,twin transfusion syndrome (TTTS) managed with laser ablation surgery in an Australian tertiary perinatal centre and to compare the outcome with other large cohorts. Methods: The outcomes of 100 consecutive pregnancies with severe TTTS managed with selective fetoscopic laser ablation from March 2002 to June 2007 were examined. Survival and neonatal morbidity were analysed. Comparisons were made with the results from other studies of laser surgery with at least 100 pregnancies. Results: There were 100 women with TTTS treated with laser ablation; 34 stage II, 44 stage III and 22 at stage IV. Median gestation at time of laser was 21 weeks (range 18,28) and median gestation at delivery was 31 weeks (range 20,39). Overall perinatal survival rate was 151 of 200 (75.5%). Eighty five per cent had one or more surviving twins. The survival rate for stage IV TTTS was 88.6%, significantly better than for stage II (69.1%) and stage III (73.9%) pregnancies. The perinatal mortality rate for donors (30%) was not significantly different from recipients (19%), but the fetal death rate for donors was significantly greater than that for recipients (P = 0.03). Severe cerebral abnormalities were present in only 2.8% of newborns. The overall survival rate was comparable to other large series. Conclusions: These results for the management of severe TTTS are comparable to the best reported international series. Long-term follow-up is required and more research needs to be undertaken to further improve these results. [source]

Neonatal death after hypoxic ischaemic encephalopathy: does a postmortem add to the final diagnoses?

BJOG : AN INTERNATIONAL JOURNAL OF OBSTETRICS & GYNAECOLOGY, Issue 7 2005
Dawn E. Elder
Background Case review after fatal perinatal asphyxia may have medicolegal implications. Accurate diagnosis of cause of death is therefore essential. Objective To determine consent rate and utility of autopsy after fatal grade III hypoxic ischaemic encephalopathy (HIE) presumed to be secondary to birth asphyxia. Design A retrospective clinical review from January 1995 to December 2002. Setting Regional tertiary referral neonatal unit, Wellington, New Zealand. Population Inclusion criteria were gestation ,37 weeks, resuscitation after delivery and clinical course of grade III HIE. Exclusions were a recognised major lethal malformation. Methods Review of clinical records including the autopsy report. Main outcome measures Consent for autopsy, change in diagnosis after autopsy. Results Twenty-three infants died during the time period with a major diagnosis of grade III HIE. Three did not meet inclusion criteria. Of the remaining 20, 11 were female. Median gestation at birth was 40 weeks (range 38,42 weeks) and median birth weight was 3568 g (range 2140,4475 g). In 8/17 of the infants for whom length and head measurements were available, the Ponderal Index suggested intrauterine growth retardation. The 16/20 infants had an autopsy. Four of these were Coroner's cases giving an autopsy rate of 80% with a rate by consent of 60%. In 10 (62.5%) infants, significant new information was added to the clinical diagnoses. Conclusions Neonatal HIE is a symptom rather than a final clinical diagnosis. A full autopsy is required to fully explore the reasons for fatal neonatal HIE and may provide information that is important medicolegally. [source]

Psychological functioning and health-related quality of life in adulthood after preterm birth

DEVELOPMENTAL MEDICINE & CHILD NEUROLOGY, Issue 8 2007
Stuart R Dalziel FRACP PhD
The aim of this study was to determine if preterm birth is associated with socioeconomic status (SES), psychological functioning, and health-related quality of life (HRQoL) in adulthood. We used prospective follow-up of 192 adult offspring of mothers who took part in a randomized controlled trial of antenatal betamethasone for the prevention of neonatal respiratory distress syndrome (66 born at term [33 males, 33 females] 126 born preterm [66 males, 60 females]). Cognitive functioning was assessed using the Wechsler Abbreviated Scale of Intelligence. Working memory and attention was assessed using the Benton Visual Retention Test, the Paced Auditory Serial Addition Test, and the Brown Attention Deficit Disorder Scale. Psychiatric morbidity was assessed using the Beck Depression Inventory II, the State-Trait Anxiety Inventory, and the Schizotypy Traits Questionnaire. Handedness was assessed using the Edinburgh Handedness Inventory. HRQoL was assessed using the Short Form-36 Health Survey. Moderately preterm birth (median gestation 34wks, mean birthweight 1946g [SD 463g]) was not related to later marital status, educational attainment, SES, cognitive functioning, working memory, attention, or symptoms of anxiety or schizotypy at 31 years of age. Preterm birth was associated with fewer symptoms of depression and higher levels of satisfaction in three of the eight HRQoL domains measured (bodily pain, general health perception, and social functioning). Adults who were born moderately preterm have SES, psychological functioning, and HRQoL consistent with those who were born at term. This good long-term outcome cannot be extrapolated to those with early childhood disability or very low birthweights. [source]

Amniocentesis in the third trimester of pregnancy

PRENATAL DIAGNOSIS, Issue 11 2007
Keelin O'Donoghue
Abstract Background Amniocentesis in the third trimester, which reduces risks of procedure-related miscarriage but still allows termination of affected fetuses, may be applicable in some pregnancies. The implications of deferring amniocentesis include complications, delivery before the test and increased amniotic fluid culture failure rates. We investigated the indications, complications, karyotype results and laboratory failure rates of third-trimester amniocentesis. Methods We studied all women who underwent third-trimester amniocentesis from 2000 to 2006. Data were collected from ultrasound databases, computerised records and individual chart review. Results We reviewed 165 pregnancies that underwent amniocenteses after 28 weeks. Median maternal age at amniocentesis was 32 years and median gestation, 32+2 weeks. Indications included malformation (60/165), soft markers (37/165), maternal request (12/165), and positive screening test (11/165). Of the 49 women(29.7%) who declined second-trimester amniocentesis, 24.5% had twins and 38.8%, malformations. Amniocentesis was not offered to 116 women: 57/116 (49.1%) third-trimester referrals, 25/116 (21.5%) diagnosed late and the remainder, low-risk indications. Fetal karyotype was abnormal in 17 cases (10.3%). Seven women who initially declined amniocentesis had abnormal results compared with one advised to have late amniocentesis. Culture failure rate was 9.7%, however results were obtained by Quantitative fluorescent polymerase chain reaction (QF-PCR) from 164/165 samples. Complication rate was 1.2%. Conclusion For late diagnoses and for low-risk indications, third-trimester amniocentesis is an acceptable option, especially when utilising QF-PCR with cytogenetic culture. Copyright © 2007 John Wiley & Sons, Ltd. [source]