Thrombotic events during long-term follow-up of obstetric antiphospholipid syndrome patients

Antiphospholipid syndrome (APS) is a systemic autoimmune disorder characterized by arterial and/or venous thromboses and/or pregnancy-associated morbidity. Some patients develop only obstetric complications (obstetric APS), but data on the frequency of thrombotic events during the follow-up of these patients are scarce. This study was undertaken to evaluate the rate of thrombotic events after obstetric APS diagnosis according to the 2006 revised criteria. In total, 32 obstetric APS patients were retrospectively studied, with mean follow-up of 50 ± 37 months. After delivery, aspirin was prescribed to all patients as primary thrombosis prevention. The thrombosis rate was 3.3/100 patient-years and was 4.6, 4.5 and 10/100 patient-years when we considered at least two antiphospholipid antibody positivities (among lupus anticoagulant, anticardiolipin and anti-β2-glycoprotein-I), antinuclear antibody positivity or systemic lupus erythematosus-associated APS patients, respectively. The thrombosis rate was high after obstetric APS diagnosis, even for patients taking aspirin. Larger, prospective studies are needed to confirm this high frequency and determine the associated risk factors.

Crane-Heise syndrome: two further case reports

Crane-Heise syndrome is a rare lethal and autosomal recessive condition which has been first reported in 1981 in three siblings presenting intrauterine growth retardation, a poorly mineralised calvarium, characteristic facial features comprising cleft lip and palate, hypertelorism, anteverted nares, low-set and posteriorly rotated ears, vertebral anomalies and absent clavicles. Since then, to our knowledge, only one isolated case and two siblings were reported with similar findings. We present two further cases, diagnosed after termination of pregnancy at 24 weeks' gestation in one case and straight after birth in the other, both very similar to the previously reported ones, and broaden the clinical spectrum of this entity. To our knowledge, no molecular mechanism has been identified in Crane-Heise syndrome so far.

[Institutional review board of the French college of obstetricians and gynecologists (CEROG).]

OBJECTIVE

To report the rules and the activity of the institutional review board of the French college of obstetricians and gynecologists (Comité d'éthique de la recherche en obstétrique et gynécologie [CEROG]) created in 2008. The submission requirements are also described.

METHODS

Retrospective study.

RESULTS

The Ethical Review Committee [institutional review board of the French college of obstetricians and gynecologists (CNGOF)] CEROG have examined 65 project studies in 2008. The median number of submitted studies was 5.5 per month (IQR: 3.75-6.25). The origins of the submission were as follows: tertiary care university hospitals (n=63, 97 %), Inserm (n=1), INRA (n=1). Researches were found to be in conformity with the French laws and regulations, to conform to generally accepted scientific principles and medical research ethical standards in 44 cases (68 %). In 13 cases (20 %), the study has been forwarded to the Persons Protection Committee (PPC) since it concerned biomedical research or "usual care research" (soin courant). In six cases (9 %), the investigators have not responded to IRB suggestions. In two cases (3 %), the information form has been judged unsatisfactory.

CONCLUSION

The CEROG is the first national IRB in obstetrics and gynecology. This new committee clarifies IRB submission procedure in France concerning non-interventional studies in the field of obstetrics and gynecology.

[Fetal ultrasonography and Doppler in isolated congenital heart block]

Isolated congenital heart block is linked to transplacental passage of maternal anti-SSA/Ro and/or anti-SSB/La antibodies that may be related to a connective tissue disease. Ultrasonography and Doppler are essential to screen fetus at risk. They allow the diagnosis of first- and second-degree blocks which are probably preliminary stages in conducting tissue's injury. In these situations, a maternal treatment by fluorinated steroids can be proposed because of its possible effect on partial blocks. However, these early signs of nodal injury can be lacking: some fetus present a complete heart block without previously detected less advanced block. Moreover, the significance of first-degree block is unclear since it could reverse spontaneously. Other markers of nodal injury would be valuable. In case of complete congenital heart block, ultrasonography is useful to detect congestive heart failure and help the obstetrical management when unfavorable prognostic signs occur.

Quantification of intrathoracic liver herniation by magnetic resonance imaging and prediction of postnatal survival in fetuses with congenital diaphragmatic hernia

OBJECTIVE

To quantify the degree of intrathoracic liver herniation by magnetic resonance imaging (MRI) and evaluate its effect on postnatal survival in fetuses with isolated congenital diaphragmatic hernia (CDH).

METHODS

Forty fetuses that were expectantly managed and that were delivered after 32 weeks' gestation were included in this study. On axial T2 weighted MR images the degree of intrathoracic liver herniation was measured by volumetry, using the xyphoid process and thoracic apex as landmarks. The ratio of the volume of the liver that was herniated into the thoracic cavity to the volume of the thoracic cavity was calculated (LiTR). All the fetuses also underwent lung volumetry, and the ratio of the observed/expected total fetal lung volume (o/e TFLV) was calculated. Regression analysis was used to investigate the effect on survival of side of occurrence of CDH, o/e TFLV, LiTR and gestational age at delivery. Receiver-operating characteristics (ROC) curves were constructed to examine the prediction of survival by o/e TFLV or LiTR alone and o/e TFLV and LiTR together.

RESULTS

Univariate regression analysis demonstrated that significant predictors of survival were o/e TFLV and LiTR. Multiple regression analysis demonstrated that o/e TFLV and LiTR provided independent prediction of survival. The area under the ROC curve (AUC) for the prediction of postnatal survival from o/e TFLV alone was 0.846 (P < 0.001; SE = 0.062) and the AUC from LiTR alone was 0.875 (P = 0.001; SE = 0.072). The AUC for the prediction of postnatal survival from o/e TFLV and LiTR combined was 0.912 (P < 0.001; SE = 0.045), however it was not statistically significantly different from that of o/e TFLV alone.

CONCLUSION

In expectantly managed CDH fetuses, assessment of LiTR using MRI provided prediction of postnatal survival independently from o/e TFLV.

Fetal cortical activation to sound at 33 weeks of gestation: a functional MRI study

Hearing already functions before birth, but little is known about the neural basis of fetal life experiences. Recent imaging studies have validated the use of functional magnetic resonance imaging (fMRI) in pregnant women at 38-weeks of gestation. The aim of the present study was to examine fetal brain activation to sound, using fMRI at the beginning of the third trimester of pregnancy. 6 pregnant women between 28- and 34-weeks of gestation were scanned using a magnetic strength of 1.5 T, with an auditory stimulus applied to their abdomen. 3 fetuses with a gestational age of 33 weeks, showed significant activation to sound in the left temporal lobe, measured using a new data-driven approach (Independent Component Analysis for fMRI time series). Only 2 of these fetuses showed left temporal activation, when the standard voxel-wise analysis method was used (p=0.007; p=0.001). Moreover, motion parameters added as predictors of the General Linear Model confirmed that motion cannot account for the signal variance in the fetal temporal cortex (p=0.01). Comparison between the statistical maps obtained from MRI scans of the fetuses with those obtained from adults, made it possible to confirm our hypothesis, that there is brain activation in the primary auditory cortex in response to sound. Measurement of the fetal hemodynamic response revealed an average fMRI signal change of +3.5%. This study shows that it is possible to use fMRI to detect early fetal brain function, but also confirms that sound processing occurs beyond the reflexive sub-cortical level, at the beginning of the third trimester of pregnancy.

[Liver hernia. Prognosis and report of 11 cases]

OBJECTIVES

Exclusive hepatocele is defined as a hernia containing in majority the liver with possibly some intestinal loops. This study was undertaken to evaluate neonatal morbidity and mortality in this series of exclusive hepatoceles.

MATERIALS AND METHODS

We reviewed 11 cases of exclusive hepatoceles with delivery at the hospital Jeanne-de-Flandre in the CHRU of Lille, in France.

RESULTS

The mean gestational age of diagnosis was 14.5+/-3.4 weeks of gestation. Karyotype determination was performed in 100% of cases: it was abnormal in one case of 11. One termination of pregnancy was performed because of trisomy 13. The mean gestational age at delivery was 38+/-1.8 weeks of gestation. Cesarean deliveries were performed in nine cases. Morbidity was important with: one case of fetal growth retardation on total hepatocele, three cases of severe respiratory distress, two cases of severe digestive complications. The mean length of stay was 42.8 days. The mean length of parenteral feeding was 14.4 days. Postnatal mortality concerned one child, which died because of a severe respiratory distress due to pulmonary hypoplasia.

CONCLUSION

In this series, morbidity is thus important, making of exclusive hepatoceles a full entity among the omphaloceles. The multidisciplinary take care is more complex but conceivable.

[Abruptio placentae. Management in a reference Nigerien maternity. Prospective study about 118 cases during one year]

OBJECTIVE

Placental abruption is a syndrome, which occurs in the third trimester of the pregnancy or during labour. It is the main cause of pregnancy last term bleeding and is also responsible for a high stillbirth rate. The objective is to describe the epidemiological, clinical, paraclinical and therapeutic characteristics in order to decrease the fetal and maternal mortality and morbidity.

PATIENTS AND METHODS

It is a prospective and descriptive study in continuous series, over a twelve-month period, from 1st January 2003 to 31st December 2003, at Issaka Gazobi maternity of Niamey, Niger.

RESULTS

During the study period, 3255 deliveries have been done. One hundred and eighteen placental abruptions have been observed, which corresponds to a frequency of 3.6% with the highest rate during raining season. The average age and parity were: 31 years and 5th with a predominance of grand multiparous (38.2%). The majority of the patients were in-utero transfers (83,1%) and had done at least 10 km before arriving. One hundred and eleven patients had a caesarean section (94,1%) and 7 delivered through the vaginal route (5.9%). The fetal prognosis was characterized by a high stillbirth rate of 71.3% (87/122), fetal hypotrophy (64.8%) and prematurity (23.8%). The main cause of maternal morbidity was anaemia (76.3%) and Disseminated Intravascular Coagulation (5.9%). Further, 81 patients have been transfused (68.7%). The maternal mortality was 5.1% (6/118).

DISCUSSION AND CONCLUSION

Placental abruption, a medical and obstetrical emergency, is a serious obstetric condition, especially in our country. Physicians must be aware that patients with high blood pressure, preeclampsia, eclampsia, particularly in case of multiparity are at increased risk of placental abruption. Early diagnosis, prenatal follow-up and caesarean section improve the maternal and fetal prognosis.

Intervalle de naissance entre les jumeaux: une limite de temps est-elle justifiée?

OBJECTIVES

To assess the effect of the twin-to-twin delivery interval on the umbilical cord blood gas status and the neonatal outcome of the second twin following vaginal delivery.

PATIENTS AND METHODS

Retrospective study of twin deliveries at or beyond 34 weeks of gestation over a period of five years. The correlation between the twin-to-twin delivery interval, and the umbilical arterial blood gas parameters of the second twin, including pH, PO(2), PCO(2), HCO(3-) and base excess, was studied. A second analysis was performed after exclusion of non-vertex presentation, need for general anesthesia, growth restriction and weight difference between the twin>30%.

RESULTS

Two hundred and thirty-nine patients were studied. The mean twin-to-twin delivery interval was 11.3+/-6.4 minutes (between 6 and 14 minutes in 56.1% of cases). The second twin had more Apgar score<7 at 1 minute (P<0.02) and more arterial ombilical pH<7.20 (P<0.01) than the first twin. Over 15 minutes, the mean arterial pH was lower (P<0.01) and the number of arterial pH<7.20 increased (P<0.03). In contrast, the mean Apgar score and the rate of neonatal transfer did not differ significantly. There were significant negative correlations between arterial pH, base excess and bicarbonates and the twin-to-twin delivery interval (P<0.05). Similar results were found in the homogenised population. The reduction in the second twin arterial pH was expressed as pH=7.282-0.003 x time.

DISCUSSION AND CONCLUSION

Umbilical cord arterial blood gas parameters deteriorate with increasing twin-to-twin delivery interval. Our results suggest that this interval should be less than 15 minutes, but obstetrician should adapt to every clinic situation.

[Relevance of the toxoplasma IgG avidity test in the serological surveillance of pregnant women]

In addition to the serological systematic screening tests, kits to measure the avidity of toxoplasma IgG antibodies are currently available. Since high-avidity IgG toxoplasma antibodies have been shown to exclude recent infection, IgG avidity determination is especially useful in ruling out acute infection having occurred in the 3-4 prior months of pregnancy. We therefore compared the efficacy of two toxoplasma IgG avidity ELISA kits: SFRI (SFRI Laboratoire) and VIDAS Toxo-IgG avidity kit (bioMérieux). The agreement of the results from the 2 commercial assays were analysed using 55 serum samples, in terms of global mother-child Toxoplasma results and outcome, specially with light of the results of Toxoplasma antenatal, postnatal assays and of clinical follow up of children.