[Propositions for perinatal care at extremely low gestational ages - Working group on "Extremely low gestational ages" for SFMP, CNGOF, and SFN]

OBJECTIVES

International literature suggests that active perinatal management at extremely low gestational ages improves survival without increasing the risk of impairment in survivors, compared to less active management. Although these results are limited to a small number of countries, they question current practices in France. New propositions on perinatal management of extremely preterm infants have carried out by the French Society of Perinatal Medicine, the French Society of Neonatology and the National College of French Obstetricians and Gynecologists.

METHODS

This group was set up in 2015 on the initiative of the professional societies and in collaboration with parents' and users' associations. The work was based on a review of the literature on the prognosis of extremely preterm children, as well as on recommendations by European societies. Based on this information, a text was produced, submitted to all members of the working group and definitively validated in April 2019.

RESULTS

This text offers a decision-making guideline for the management at extremely low gestational ages. Its principles are: the administration of steroids independently of management (resuscitation or comfort care); a prognostic evaluation and a collegial decision, outside the context of the emergency; a consensus on the information to be given to parents before going to inform them and gather their opinion.

CONCLUSIONS

These new propositions will contribute to modifying perinatal care at extremely low gestational ages in France.

Osteoporosis and venous thromboembolism: a retrospective cohort study in the UK General Practice Research Database

In a retrospective cohort study using the General Practice Research Database (GPRD), there was a greater association of venous thromboembolism (VTE) in osteoporotic than in non-osteoporotic female patients. No greater association was shown in treated patients with strontium ranelate or alendronate compared to untreated osteoporotic female patients.

INTRODUCTION

We explored the risk of VTE in usual practice in osteoporotic and non-osteoporotic women with and without anti-osteoporotic treatment.

METHODS

A retrospective study was conducted using the GPRD in the UK. The cohorts consisted of untreated osteoporotic women (N = 11,546), osteoporotic women treated with alendronate (N = 20,084), or strontium ranelate (N = 2,408), and a sample of non-osteoporotic women (N = 115,009). Cohorts were compared using a Cox proportional hazards regression model.

RESULTS

There was a significantly increased relative risk for VTE in untreated osteoporotic women versus non-osteoporotic women (annual incidence 5.6 and 3.2 per 1,000 patient-years, respectively; relative risk 1.75 [95% confidence interval (CI), 1.09-1.84]). Results were confirmed using adjusted models. The annual incidences of VTE in osteoporotic patients treated with strontium ranelate and alendronate were 7.0 and 7.2 per 1,000 patient-years, respectively, with no significant difference between untreated and treated patients whatever the treatment. Adjusted hazard ratios for treated versus untreated osteoporotic women were 1.09 (95% CI, 0.60-2.01) for strontium ranelate and 0.92 (95% CI, 0.63-1.33) for alendronate.

CONCLUSION

This study shows a greater association of VTE in osteoporotic compared to non-osteoporotic patients, but does not show any greater association in treated patients with strontium ranelate or alendronate compared to untreated osteoporotic patients.

Investigating the variations in survival rates for very preterm infants in 10 European regions: the MOSAIC birth cohort

OBJECTIVE

To investigate the variation in the survival rate and the mortality rates for very preterm infants across Europe.

DESIGN

A prospective birth cohort of very preterm infants for 10 geographically defined European regions during 2003, followed to discharge home from hospital.

PARTICIPANTS

All deliveries from 22 + 0 to 31 + 6 weeks' gestation.

MAIN OUTCOME MEASURE

All outcomes of pregnancy by gestational age group, including termination of pregnancy for congenital anomalies and other reasons, antepartum stillbirth, intrapartum stillbirth, labour ward death, death after admission to a neonatal intensive care unit (NICU) and survival to discharge.

RESULTS

Overall the proportion of this very preterm cohort who survived to discharge from neonatal care was 89.5%, varying from 93.2% to 74.8% across the regions. Less than 2% of infants <24 weeks' gestation and approximately half of the infants from 24 to 27 weeks' gestation survived to discharge home from the NICU. However large variations were seen in the timing of the deaths by region. Among all fetuses alive at onset of labour of 24-27 weeks' gestation, between 84.0% and 98.9% were born alive and between 64.6% and 97.8% were admitted to the NICU. For babies <24 weeks' gestation, between 0% and 79.6% of babies alive at onset of labour were admitted to neonatal intensive care.

CONCLUSIONS

There are wide variations in the survival rates to discharge from neonatal intensive care for very preterm deliveries and in the timing of death across the MOSAIC regions. In order to directly compare international statistics for mortality in very preterm infants, data collection needs to be standardised. We believe that the standard point of comparison should be using all those infants alive at the onset of labour as the denominator for comparisons of mortality rates for very preterm infants analysing the cohort by gestational age band.

Non-clinical determinants of planned cesarean delivery in cases of term breech presentation in France

BACKGROUND

To explore non-clinical maternal and institutional factors associated with the decision for planned cesarean in cases of breech presentation at term in France, where planned vaginal delivery are recommended by the French College of Gynecologists and Obstetricians (CNGOF) when conditions are optimal.

METHODS

The analysis included 6,080 women with a live fetus in breech presentation at term, from the PREMODA prospective survey, in 138 French maternity units between 1 June 2001 and 31 May 2002. Women with previous cesarean sections were excluded. The analysis to identify risk factors for planned cesarean used a multilevel logistic model.

RESULTS

The planned cesarean rate was 63.5%. The maternal factors most strongly associated with a decision for planned cesarean were parity (adjusted OR: 2.56 (2.29-2.88)) and maternal age > or =35 years (ORa: 1.38 (1.18-1.61)). No association was found between institutional factors, such as maternity size and level of care, although a centre effect was documented (p<0.001).

CONCLUSION

The variation in planned cesarean rates between maternity units was not associated with their structural characteristics, but was related to a characteristic specific to each centre, and, thus, suggests that despite the current guidelines in France, obstetricians have diverse opinions about the best mode of delivery for breech presentations.

General obstetrics: Preterm birth and multiple pregnancy in European countries participating in the PERISTAT project

OBJECTIVE

To compare rates of preterm birth among multiple births in European countries, to estimate their contribution to overall preterm birth rates and to explore factors which could explain differences between preterm birth rates.

DESIGN

Analyses of data from vital statistics, birth registers or national samples of births.

SETTING

Eleven member states of the European Union.

POPULATION

All live births or representative samples of births at national or regional level for the year 2000 or most recent year.

METHODS

Description of rates of preterm birth before 37 and 32 weeks, estimation of population attributable risks (PAR), study of associations between preterm birth rates in multiples and singletons and nonspontaneous labour using Spearman's rank correlation coefficient.

MAIN OUTCOME MEASURES

Preterm birth rates, PAR, proportions of deliveries with nonspontaneous onset (caesarean sections before labour or induction of labour).

RESULTS

The proportion of multiple births before 37 weeks varied from 68.4% in Austria to 42.2% in the Republic of Ireland. In half of the countries, over 20% of all preterm births were attributable to multiple births. A strong association was found between the proportions of births before 37 weeks among multiple and singleton births (r= 0.81; P < 0.001). An association was observed between the rates of preterm birth and the proportions of deliveries with nonspontaneous onset among twins.

CONCLUSIONS

Wide variations in rates of preterm births and deliveries with nonspontaneous onset were found between countries, suggesting marked differences in clinical practice which could have long-term implications for the health of children from multiple births.

Does smoking in pregnancy modify the impact of antenatal steroids on neonatal respiratory distress syndrome? Results of the Epipage study

OBJECTIVES

To assess the relation between cigarette smoking during pregnancy and neonatal respiratory distress syndrome (RDS) in very preterm birth, and to analyse the differential effect of antenatal steroids on RDS among smokers and non-smokers.

DESIGN

A population based cohort study (the French Epipage study).

SETTING

Regionally defined births in France.

METHODS

A total of 858 very preterm liveborn singletons (27-32 completed weeks of gestation) of the French Epipage study were included in this analysis. The odds ratio for RDS in relation to smoking in pregnancy was estimated using a logistic regression to control for gestational age. The odds ratio for RDS in relation to antenatal steroids was estimated taking into account an interaction between antenatal steroids and cigarette smoking, using multiple logistic regression to control for gestational age, birthweight ratio, main causes of preterm birth, mode of delivery, and sex.

RESULTS

The odds ratio for RDS in relation to smoking in pregnancy adjusted for gestational age (aOR) was 0.59 (95% confidence interval (CI) 0.44 to 0.79). The aOR for RDS in relation to antenatal steroids was 0.31 (95% CI 0.19 to 0.49) in babies born to non-smokers and 0.63 (95% CI 0.38 to 1.05) in those born to smokers; the difference was significant (p = 0.04).

CONCLUSIONS

Cigarette smoking during pregnancy is associated with a decrease in the risk of RDS in very preterm babies. Although antenatal steroids reduce the risk of RDS in babies born to both smokers and non-smokers, the reduction is smaller in those born to smokers.

Antenatal corticosteroids policies in 14 European countries: factors associated with multiple courses. The EURAIL survey

AIM

To describe antenatal corticosteroids (ANCs) policies in European obstetric units and to determine factors that influence the use of multiple courses.

METHODS

641 obstetricians from obstetric departments covering a geographical area in 14 European countries responded to a questionnaire on ANCs policies. Logistic regression was used to identify factors that were related to the use of multiple ANCs courses.

RESULTS

The survey response rate was 76% (inter-country range 33-94%): 11% (0-50%) of the respondents started ANCs from 23 to 24 wk gestation, 82% from 24 to 28 wk (50-100%) and 7% from 28 to 36 wk (0-32%). Eighty-five percent of the units (63-100%) used multiple ANCs courses. After adjustment for country, number of infants delivered at 24-32 wk annually in the unit, NICU and maternal hypertension, maternal hypertension tended to be an explicative factor (OR 1.97; 95% CI: 0.75-5.17).

CONCLUSIONS

The high proportion of departments that initiated ANCs between 24 and 28 wk of gestation is consistent with the high incidence of neonatal morbidity and mortality in that age range. Multiple courses are overwhelmingly prescribed in Europe, although their risk/benefit ratio compared with a single dose is not yet known. The likelihood of using repeated courses of ANCs may be related to the presence of maternal hypertension, and this highlights the importance of closely monitoring women at risk of premature delivery.

[Office-based pediatricians' knowledge and adherence to a consensus statement on acute rhinopharyngitis in the child]

AIM

To assess the impact on community-based pediatricians of the conclusions of the 10th Conférence de Consensus en Thérapeutique Anti-Infectieuse (CCTAI) on the antibiotic treatment in acute nasopharyngitis (ANP).

METHODS

Fifty-six pediatricians took part in the study. Over a period of 15 days in October 1998, all the children (n = 997) presenting an ANP were prospectively included. The prescription of an antibiotic treatment as well as the clinical criteria authorizing it, according to the conclusions of the 10th CCTAI, were recorded. The participants were not told the purpose of the study.

RESULT

Sixty percent of the pediatricians questioned were familiar with the 10th CCTAI. Forty-five percent said they complied with it, but only 7% stated it had changed their day-to-day clinical practice. Based on the conclusions of the 10th CCTAI, an antibiotic treatment would have been discussed for 38% of the children. Twenty-four percent of them were given one. For 54% of the children that were given an antibiotic, such treatment was disapproved by the 10th CCTAI. No significant association has been established between familiarity with the 10th CCTAI and the following criteria: gender, age, hospital activity, years of practice, medical journals read, and belief in the existence of a license for one or more antibiotics for ANP in children. However, this last criterion was significantly (P = 0.03) associated with an increase in the percentage of antibiotics prescribed: 29% vs 16%.

DISCUSSION AND CONCLUSION

The 10th CCTAI has had a moderate impact on the day-to-day practice of the pediatricians who took part in our study. Several explanations are discussed. The authors emphasize the virtual lack of indications of antibiotics in ANP.

The long-term effectiveness of preventive strategies for osteoporosis in postmenopausal women: a modeling approach

Based on data from the literature, we have developed a computer-based simulation model to compare the long-term effectiveness of different preventive strategies of osteoporotic fractures. The Markov model comprises 25 states, including states which describe women distributed according to three levels of fracture risk, fractures states, post-fracture states and a death state. We chose eight standard preventive strategies, which we compare with the 'No Treatment' reference strategy. The first two strategies consist in treating all 50-year-old women for 5 or 10 years with hormone replacement therapy (HRT). Strategies 3 and 4 aim at assessing a 5-year course of treatment with bisphosphonates in osteopenic and osteoporotic 65- or 75-year-old women. Strategies 5 and 6 combine 5 years of HRT in all 50-year-old women with 5 years of bisphosphonates in osteopenic and osteoporotic women at 65 or 75 years. The last two strategies simulate 10 years of HRT in all 50-year-old women, followed by strategy 3 or strategy 4. Simulated life expectancy and mean ages of fracture occurrence fit well with the observed data. All the preventive strategies tested reduced the number of fractures. Early 10-year HRT in all women, plus 5 years of bisphosphonates in women at risk of fractures at 65 or 75 years, are the most effective strategies, with an 18.4-19.0% reduction in all fractures, and a 25.6-26.1% reduction in the number of hip fractures. Strategy 2 has a similar outcome, thus demonstrating the value of treatment started early and sustained over a long period. The strategies implemented later, S3 and S4, only concern women at risk (i.e., osteopenic or osteoporotic), and are less effective, with a 1.5-2.1% decrease in all fractures. The combined strategies, S5 and S6, produce intermediate results: a 12.9-13.5% reduction in the number of all fractures and a 17.5-17.9% reduction in hip fractures.

Inhaled salbutamol and beclomethasone for preventing broncho-pulmonary dysplasia: a randomised double-blind study

Early inflammatory lesions and bronchial hyperresponsiveness are characteristics of the respiratory distress in premature neonates and are susceptible to aggravation by assisted ventilation. We hypothesized that treatment with inhaled salbutamol and beclomethasone might be of clinical value in the prevention of bronchopulmonary dysplasia (BPD) in ventilator-dependent premature neonates. The study was double-blinded and placebo controlled. We studied 173 infants of less than 31 weeks of gestational age, who needed ventilatory support at the 10th postnatal day. They were randomised to four groups and received either placebo + placebo, placebo + salbutamol, placebo + beclomethasone or beclomethasone + salbutomol, respectively for 28 days. The major criteria for efficacy were: diagnosis of BPD (with score of severity), mortality, duration of ventilatory support and oxygen therapy. The trial groups were similar with respect to age at entry (9.8-10.1 days), gestational age (27.6-27.8 weeks), birth weight and oxygen dependence. We did not observe any significant effect of treatment on survival, diagnosis and severity of BPD, duration of ventilatory support or oxygen therapy. For instance, the odds-ratio (95% confidence interval) for severe or moderate BPD were 1.04 (0.52-2.06) for inhaled beclomethasone and 1.54 (0.78-3.05) for inhaled salbutamol.

CONCLUSION

This randomised prospective trial does not support the use of treatment with inhaled beclomethasone, salbutamol or their combination in the prevention of BPD in premature ventilated neonates.

Outborn status with a medical neonatal transport service and survival without disability at two years. A population-based cohort survey of newborns of less than 33 weeks of gestation

OBJECTIVE

Prenatal events are thought to play an important role in long-term handicap, but the specific role of perinatal factors remains controversial. Our study, conducted in the context of this debate, aimed to break down the various components of perinatal management and to assess the relationship between these components and survival without disability at the age of two years.

STUDY DESIGN

A prospective geographically-defined study was conducted in 1985 in the Paris metropolitan area. It covered 53430 births (stillbirths and live births), including 539 that occurred between 25 and 32 weeks gestation. The relationship between perinatal management and survival without disability was studied by a multivariate analysis (logistic regression). The analysis was restricted to a group of 202 infants born at 31 or 32 week's gestation, to avoid indication bias.

RESULTS

An inborn status (delivery in a tertiary care facility) exerted a protective effect on survival without disability at the age of two years (Adjusted Odds Ratio (OR)=7.51 [1.51; 37.4]), even though the area we studied possessed an excellent Medical Neonatal Transport Service. Multiple pregnancies also seemed to have a protective effect (Adjusted OR=2.45 [0.96; 6.27]). No statistically significant association was seen between survival without disability at two years and the presence of a hospital staff paediatrician in the delivery room.

CONCLUSION

These results lead us to consider what the concept of inborn/outborn represents in the perinatal management of infants at high risk.

Lone hyperuricemia during pregnancy: maternal and fetal outcomes

OBJECTIVE

Study of maternal and fetal consequences of lone hyperuricemia during pregnancy and demonstration that lone hyperuricemia is not a risk factor regarding the onset of preeclampsia.

STUDY DESIGN

Retrospective study of two groups of women, one found to have lone hyperuricemia during pregnancy (n=102) and the others with normal serum uric acid levels (n=100).

RESULTS

The only consequence identified of the lone hyperuricemia was a lower birth weight of children born to mothers found to have lone hyperuricemia for more than 2 weeks (P<0.05).

CONCLUSIONS

Lone hyperuricemia is not a risk factor regarding the onset of preeclampsia. It is therefore unnecessary to measure serum uric acid level during a normal pregnancy.

Effect of chloroquine prophylaxis during pregnancy on maternal haematocrit

Two controlled trials of chloroquine prophylaxis during pregnancy were performed, one in Burkina Faso in 1987, on all pregnant women, and the other in Cameroon in 1992, on primigravidae only. Maternal haematocrit at delivery was found to be significantly higher in those women who had received chloroquine than in those who had not, both in Burkina Faso (37.4% v. 36.5%; P = 0.01) and in Cameroon (34.8% v. 32.8%; P = 0.02). Anaemia, defined as an haematocrit of < 30%, was also less common in those treated with chloroquine (6.3% v. 8.5% in Burkina Faso and 8.3% v. 18.4% in Cameroon) but this difference was not significant in either country. A slight improvement in haematological status when prophylaxis is given has also been observed in similar studies performed in other tropical countries. The present results confirm the usefulness of targeting antimalarial prophylaxis at pregnant women. Such prophylaxis during the first pregnancy also increases birthweight.

How hip and whole-body bone mineral density predict hip fracture in elderly women: the EPIDOS Prospective Study

We conducted a population-based cohort study in 7598 white healthy women, aged 75 years and over, recruited from the voting lists. We measured at baseline bone mineral density (BMD g/cm2) of the proximal femur (neck, trochanter and Ward's triangle) and the whole body, as well as fat and lean body mass, by dual-energy X-ray absorptiometry (DXA). One hundred and fifty-four women underwent a hip fracture during an average 2 years follow-up. Each standard deviation decrease in BMD increased the risk of hip fracture adjusted for age, weight and centre by 1.9 (95% CL 1.5, 2.3) for the femoral neck, 2.6 times (2.0, 3.3) for the trochanter, 1.8 times (1.4, 2.2) for Ward's triangle, 1.6 times (1.2, 2.0) for the whole body, and 1.3 times (1.0, 1.5) for the fat mass. The areas under the receiver operating characteristic (ROC) curves were not significantly different between trochanter and femoral neck BMD, whereas ROC curves of femoral neck and trochanter BMD were significantly better than those for Ward's triangle and whole-body BMD. Women who sustained an intertrochanteric fracture were older (84 +/- 4.5 years) than women who had a cervical fracture (81 +/- 4.5 years) and trochanter BMD seemed to be a stronger predictor of intertrochanteric ([RR = 4.5 (3.1, 6.5)] than cervical fractures ([RR = 1.8 (1.5, 2.3]). In very elderly women aged 80 years and more, hip BMD was still a significant predictor of hip fracture but the relative risk was significantly lower than in women younger than 80 years. In the 48% of women who had a femoral neck BMD T-score less than -2.5, the relative risk of hip fracture was increased by 3, and the unadjusted incidence of hip fracture was 16.4 per 1000 woman-years compared with 1.1 in the population with a femoral neck BMD T-score > or = -1.

Delayed childbearing

Since around 1980, in countries belonging to European union the mean maternal age at birth increased by 1.5 y (from 27.1 to 28.6). This demographic change has important consequences on the health of the mother and of the neonate. Maternal mortality rates, stillbirth rates and frequency of congenital anomalies are affected. Without improvement in care those rates would have increased by 15 to 35% because of the increase of the mean age at birth. Nevertheless it should be noted that they continue to decrease.

Predictive value of Doppler umbilical artery velocimetry in a low risk population with normal fetal biometry. A prospective study of 2016 women

OBJECTIVE

To assess the predictive value of Doppler umbilical artery velocimetry in a low-risk population with normal fetal biometry.

STUDY DESIGN

Multicenter prospective study in 17 hospitals with prenatal clinics in France. Two thousand sixteen women who, before 28 weeks gestation were defined as at low risk after routine consultation and after ultrasound. Doppler umbilical artery velocimetry was performed between 28 and 34 weeks gestation. Confounding factors were used to perform multivariate regression.

RESULTS

1903 cases were analysed and 192 (10.1%) had an abnormal Doppler Resistance Index (RI). The abnormal Doppler group contained a significantly higher frequency of severe and moderate small for gestational age infants (SGA), both severe and moderate with a sensitivity of 25.5 and 18.8% respectively. There was no difference in hypertensive disorders or criteria of fetal distress. Mean birth weight was very significantly lower in the abnormal group (162 g). Birth weight was very significantly linked to RI after taking into account confounding variables in the multiple linear regression model (continuous relationship). After multiple logistic regression, the odds ratio associated with an abnormal Doppler result, adjusted for all the confounding factors, was 2.3 (95% CI 1.5-3.7) for moderate SGA and 3.5 (95% CI of 1.8-7.1) for severe SGA.

CONCLUSION

Low umbilical Doppler RI is predictive with moderate or severe SGA in a low-risk population with normal fetal biometry, even when the information generally available in clinical practice and ultrasound parameters are taken into account. There is a continuous relationship between RI and birthweight. This predictive value cannot, however, lead to an improvement in neonatal health unless effective measures to prevent SGA exist and umbilical Doppler should not be used in low-risk population on a routine basis.

Ultrasonographic heel measurements to predict hip fracture in elderly women: the EPIDOS prospective study

BACKGROUND

The ability of ultrasonographic measurements to discriminate between patients with hip fracture and age-matched controls has until now been tested mainly through cross-sectional studies. We report the results of a prospective study to assess the value of measurements with ultrasound in predicting the risk of hip fracture.

METHODS

5662 elderly women (mean age 80.4 years) had both baseline calcaneal ultrasonography measurements and femoral radiography (dual-photon X-ray absorptiometry, DPXA) to assess their bone quality. Follow-up every 4 months enabled us to identify incident fractures. 115 hip fractures were recorded during a mean follow-up duration of 2 years.

FINDINGS

Low calcaneal ultrasonographic variables (obtained from measurements of broadband ultrasound attenuation by, and speed of sound through the bone) were able to predict an increased risk of hip fracture, with similar accuracy to low femoral bone mineral density (BMD) obtained by DPXA. The relative risk of hip fracture for 1 SD reduction was 2.0 (95% CI 1.6-2.4) for ultrasound attenuation and 1.7 (1.4-2.1) for speed of sound, compared with 1.9 (1.6-2.4) for BMD. After control for the femoral neck BMD, ultrasonographic variables remained predictive of hip fracture. The incidence of hip fracture among women with values above the median for both calcaneal ultrasound attenuation and femoral neck BMD was 2.7 per 1000 woman-years, compared with 19.6 per 1000 woman-years for those with values below the median for both measures.

INTERPRETATION

Ultrasonographic measurements of the os calcis predict the risk of hip fracture in elderly women living at home as well as DPXA of the hip does, and the combination of both methods makes possible the identification of women at very high or very low risk of fracture.

Fetal heart rate monitoring by telephone during pregnancy--opinion of users and non-users of a new technology

OBJECTIVE

To compare the opinions of obstetricians who currently use fetal heart rate monitoring (FHRM) by telephone with the opinions of obstetricians in favour of this technique, but who do not use it.

STUDY DESIGN

A mail questionnaire was sent to the 612 members of a professional organization of obstetricians. The response rate was 76%.

RESULTS

Fourteen percent of the respondents used FHRM by telephone and 43% did not use it, but were in favour of it. Compared with current users, non-users who were in favour of this technique indicated a wider range of clinical indications for monitoring, considered a greater proportion of women to be eligible, and wanted more frequent monitoring. These differences cannot be explained by the characteristics of the obstetricians (age, type of practice or attitude towards FHRM performed in maternity unit).

CONCLUSION

Our survey shows a risk of extensive use of FHRM by telephone if this technique becomes easily accessible.

Increase of birth weight following chloroquine chemoprophylaxis during the first pregnancy: results of a randomized trial in Cameroon

A randomized trial was carried out from 1991 to 1993 among women attending an antenatal clinic in Ebolowa, Cameroon where malaria is hyperendemic and transmission occurs at a high level all year round. All pregnant women attending the clinic for their first prenatal visit between October 1991 and November 1992 were alternately assigned to chloroquine (CQ) or control (CT) groups. Chloroquine was given under observation at a weekly oral dose of 300 mg. At delivery, smears from maternal, cord, and placental blood were made and stained with Giemsa for parasites. An in vivo chloroquine sensitivity investigation was carried out on women attending the postnatal consultation to evaluate the level of chloroquine resistance in the target population. The efficacy of chloroquine was moderate in placental infection (39.2% infected in the CQ group versus 57.8% in the CT group: P = 0.05), probably because of a resistance to chloroquine estimated to be 10.9%. In the CQ group, the mean birth weight was significantly higher (P = 0.02) and the proportion of low birth weight newborns was lower (10.5% versus 27.7%; P = 0.02). A strong correlation between placental infection and birth weight was observed: the mean birth weight difference between infected and noninfected placentae was 359 g (P < 0.0001) and the proportion of low birth weight new born babies was 35.6% versus 5.9% (P = 0.0001). In Cameroon, in spite of a moderate resistance to chloroquine, this drug proved to be highly effective in increasing birth weight when administered to primigravidae. We therefore think such a prophylaxis should be recommended only to primigravidae in high transmission areas.

Comparative efficacy and tolerance of ibuprofen syrup and acetaminophen syrup in children with pyrexia associated with infectious diseases and treated with antibiotics

A double-blind, randomised, parallel group study has been done comparing the efficacy and tolerability of 7.5 mg/kg ibuprofen syrup (n = 77) and 10 mg.kg-1 acetaminophen syrup (n = 77) in 154 children (6 months to 5 years) with fever (> or = 38 degrees C) associated with infectious diseases and treated with antibiotic therapy. The area under the percentage reduction in temperature curve captured the net effect of each drug and provided the best estimate for comparison of efficacy during a defined period. Temperature evolution over time was not significantly different between the two groups. Nevertheless, the temperature reduction over the first 4 h of treatment (H0-H4) was significantly higher after ibuprofen (60%) than acetaminophen (45%). Both ibuprofen and acetaminophen were well tolerated. In conclusion, significant antipyretic activity, good tolerability and its availability as a syrup make ibuprofen an effective means of fever control in children.

Epidemiology and risk factors of osteoporosis

Recent osteoporosis research has been oriented increasingly toward understanding the determinants of peak bone mass acquisition during childhood and adolescence. Genetic factors may account for approximately half of the variability in peak femoral bone mass density, and racial differences in bone mass have been shown to appear early in life. Physical activity appears to play an important role in increasing bone mass during childhood. Most fractures in the elderly have been found to be associated with reduced bone mass and could therefore be considered osteoporotic. Retrospective reviews of medical records from residents of Rochester, Minnesota, suggest that approximately one third of women with vertebral deformities seek medical attention. Other cross-sectional data suggest that vertebral deformities cause substantial back pain and disability only if vertebral height ratios fall 4 SD below the mean.

Determinants of hormonal replacement therapy in recently postmenopausal women

Although the efficacy of hormonal replacement therapy (HRT) on the consequences of the menopause is not questioned, it appears that in Europe and in the USA only a small proportion of women are users of HRT. In this study, we examined the prevalence and the determinants of HRT among 1986 French menopausal women, aged 45 to 55 years, presenting to a preventive medicine centre. Overall, 8.1% of women reported current use of HRT. The estrogen preparation most commonly reported was transcutaneous 17 beta-oestradiol. The first determinant of current HRT was birth-place. Women born in France were nearly four times more likely to be on treatment than foreign-born women. A surgical menopause multiplied the probability of current HRT by 2, as did a high level of education. An age at first pregnancy of more than 20 and less than 4 children were also positively linked with HRT use. Even in this population of recently menopausal women, volunteering to undergo health evaluation, the prevalence of HRT was low. The reservations towards HRT may be partly due to the women themselves, and partly due to the physicians. It seems very important to inform the medical profession about the risks and benefits of HRT, and to understand more precisely the reasons why so few women use HRT.

Home visits for pregnancy complications and management of antenatal care: an overview of three randomized controlled trials

OBJECTIVE

To examine whether a policy of home visits reduces the amount of antenatal care provided by hospital maternity units.

DESIGN

A meta-analysis of three randomized controlled trials.

SETTING

9 maternity units in France.

SUBJECTS

1410 women with pregnancy complications.

INTERVENTION

1 or 2 home visits a week by a midwife.

MAIN OUTCOME MEASURES

Admission rate and length of stay in hospital.

RESULTS

The home-visiting system did not affect the hospital admission rate (typical odds ratio = 0.9; 95% CI = 0.7-1.2). In each trial, the length of hospital stay did not differ between the intervention and the control groups.

CONCLUSIONS

The home-visiting system did not greatly alter the practice of antenatal hospital admission in the maternity units studied. The results question the way the health services were used and suggest that a better integration of hospital and home services is needed to make a more rational use of health care resources.

Effect of chloroquine chemoprophylaxis during pregnancy on birth weight: results of a randomized trial

To determine the effect of chloroquine chemoprophylaxis during pregnancy on birth weights, a randomized trial was carried out in 1987 and 1988 in Banfora, Burkina Faso (West Africa). Seven hundred forty-five randomly selected women treated with chloroquine sulfate were compared to with 719 controls who received no treatment. In spite of an unquestionable effect of chloroquine in preventing placental infection (4.1% infected placentas in the treated group versus 19.0% in the controls), the mean difference in birth weights between the two groups (6 g) was not significant. The difference in the proportion of low birth weight (LBW) newborn babies in two groups (16.3% versus 16.4%) was also not significant. However, there was a strong relationship between placental infection and birth weight (the mean birth weight difference between infected and uninfected placentas was 113 g, and the proportion of LBW babies was 26.0% in infected placentas versus 14.8% in uninfected placentas). The small difference in birth weights observed between the two groups may be due to the fact that the prevalence rate of placental infection is low and that prophylaxis is effective only on a portion of the subjects in the treated group. It may also indicate that malaria is only one of several risk factors responsible for LBW. The relatively small increase in birth weight, the expected poor acceptance of mass prophylaxis, and the spreading of chloroquine-resistant Plasmodium strains should be considered before extending malaria chemoprophylaxis to all pregnant women. It might be worth considering to limit prophylaxis to primigravidae.

[Epidemiological study of 200 HIV infected pregnant women]

Demographic characteristics and lifestyle were studied among 200 HIV-seropositive women followed in a tertiary care obstetrics/gynecology center in Paris. Between 1985 and 1989, a detailed questionnaire was run by a specialized midwife. The study group, mostly comprised of pregnant women, was compared with the women delivering in the department and with the overall French pregnant population. The women's partners were also studied. There appeared to be a core group of women who are young, single, often unemployed, marginalized members of foreign-born minorities, heavy smokers, and past or present intravenous drug users. Among their partners, drug use was frequent; over half were born in sub-Saharan Africa or North Africa and one third were unemployed. Among women having a job, white collar employees and service workers were over represented, whereas blue collar workers were under represented. The epidemiological profile of HIV-infected women appears to be very different from that of the largely homosexual male population in France. These women are younger and often less intellectual, poorer, more socially marginalized and less receptive to campaigns for prevention. However, the majority of our patients are married or live maritally, work and do not (presently) use drugs.

Prevention of fetal growth retardation with low-dose aspirin: findings of the EPREDA trial

The efficacy of low-dose aspirin in preventing fetal growth retardation was tested in a randomised, placebo-controlled, double-blind trial. A secondary aim was to find out whether dipyridamole improves the efficacy of aspirin. 323 women at 15-18 weeks' amenorrhoea were selected at twenty-five participating centres on the basis of fetal growth retardation and/or fetal death or abruptio placentae in at least one previous pregnancy. They were randomly allocated to groups receiving placebo, 150 mg/day aspirin, or 150 mg/day aspirin plus 225 mg/day dipyridamole, for the remainder of the pregnancy. In the first phase of the trial all actively treated patients (n = 156) were compared with the placebo group (n = 73). Mean birthweight was significantly higher in the treated than in the placebo group (2751 [SD 670] vs 2526 [848] g; difference 225 g [95% CI 129-321 g], p = 0.029) and the frequency of fetal growth retardation in the placebo group was twice that in the treated group (19 [26%] vs 20 [13%]; p less than 0.02). The frequencies of stillbirth (4 [5%] vs 2 [1%]) and abruptio placentae (6 [8%] vs 7 [5%]) were also higher in the placebo than in the treated group. The benefits of aspirin treatment were greater in patients with two or more previous poor outcomes than in those with only one. In the second analysis, of aspirin only (n = 127) vs aspirin plus dipyridamole (n = 119), no significant differences were found. There was no excess of maternal or neonatal side-effects in the aspirin-treated patients.