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Biomedical subjects

A Mouzard

Publications and source records attributed to A Mouzard.

At least 19 recordsLinked to original sources
PubMed1999

[Community-acquired bacterial meningitis in the Loire-Atlantic region: evolution of pneumococcal and meningococcal sensitivity to penicillin].

OBJECTIVES: An epidemiological study of community-acquired bacterial meningitis was conducted in Loire-Atlantique in subjects aged over 1 month. Risk factors and changes in pneumococcal and meningococcal susceptibility to betalactams were analyzed. PATIENTS AND METHODS: All cases of proven or presumed bacterial meningitis registered by Loire-Atlantic bacteriology laboratories between May 1995 and April 1998 were analyzed. RESULTS: One hundred two cases were registered (annual incidence: 3.12 cases per 100,000 inhabitants). In children (33 cases) the main germs were meningococci (51%), pneumococci (24%) and Haemophilus influenzae (6%). In adults (69 cases), pneumococci (49%), meningococci (14%) and Listeria (4%) predominated. An underlying disease was noted 44% of the cases. Mortality was 17.6%. Sequellae were observed in 9.5%. Some degree of penicillin resistance was observed in 45% of the pneumococcal strains and in 50% of the meningococcal strains. Half of the pneumococcal strains were also resistant to third generation cephalosporins (C3G). No risk factor was significantly related to resistant strains. Susceptibility to antibiotics was not correlated with mortality for either pneumococcal or meningococcal strains, but sequellae were more frequent after meningitis caused by resistant pneumococci. CONCLUSION: For cases of community-acquired meningococcal meningitis diagnosed in 1999, it would be advisable to prescribe a combination C3G-vancomycin regimen as the first line empirical treatment while waiting for results of susceptibility tests. Certain guidelines proposed by the February 1996 consensus conference on community-acquired purulent meningitis would thus need to be amended.

Adult↗
PubMed1997

[Bacteriological study in acute otitis media].

AIM: A prospective study on bacteriological epidemiology in acute otitis media was conducted in a pediatric hospital emergency service from January 1993 to October 1995. PATIENTS: One hundred and fifty-eight children, aged 6 months to 6 years, with an acute otitis media were included. Culturing and cleansing of the ear canal and tympanocentesis for aspiration and culture of the secretions were performed in 118 children (46 of whom had received antibiotics before for 48 hours). MAIN RESULTS: Middle ear aspirates were sterile in 35% of the children who had not received antibiotics and in 64% of those already treated. Bacteria in middle ear were predominantly Haemophilus influenzae and Streptococcus pneumoniae. Fifty-nine percent of S pneumoniae strains were penicillin-resistant; however, they were responsible for clinical failure in only 8% of cases. No Staphylococcus strains, commensal of the ear canal, could be considered as pathogenic for the middle ear. CONCLUSION: The preciseness with which secretions of middle ear are aspirated reduces the risk of contamination and comparison of ear canal and middle ear cultures allows to identify them. The high ratio of sterile middle ear aspirates after antibiotic treatment raises the question if other factors are responsible for persistent symptoms. The existence of penicillin-resistant S pneumoniae must be known to adjust treatment.

Acute Disease↗
PubMed1997

[Hepatoportal sclerosis: apropos of a familial case].

BACKGROUND: Hepatoportal sclerosis is uncommon in European countries and its diagnosis is difficult. The etiology remains unknown; its familial origin is probably exceptional. CASE REPORT: An 18-month-old girl born to a mother with hepatoportal sclerosis had hepatomegaly. She also had a moderate splenomegaly and mild increase transaminase and gamma GT activities. Ultrasound examination failed to show portal hypertension. Histological study of liver showed changes quite similar to those seen in her mother. Two members of the mother's family had portal hypertension. DISCUSSION: Familial forms of portal hypertension have been reported: a familial form of incomplete septal cirrhosis and a familial occurrence of cavernous transformation of the portal vein. Obstruction of the portal vessels was not found in our patient, the youngest in whom hepatoportal sclerosis is documented.

Biopsy↗
PubMed1997

Assessment of spontaneous baroreflex sensitivity in neonates.

AIMS: To determine whether it is possible to assess baroreflex sensitivity in neonates by studying only spontaneous variation in systolic blood pressure and heart rate. METHODS: ECG and non-invasive blood pressure signals were continuously studied in 14 preterm neonates (term 29-32 weeks) and five term neonates (term 40-41 weeks). Non-invasive blood pressure measures were obtained using a Finapres placed around the child's wrist. Both signals (ECG and blood pressure), sampled at 400 Hz, were digitised by an A/D converter and stored in a binary mode on magnetic disk. An inhouse software QRS detection algorithm was used to define R peaks of the QRS complexes with an accuracy greater than 2 ms. Four 4 minute periods were recorded in each infant. The slope of the linear regression of RR intervals versus systolic blood pressure was calculated in each period and the mean value of the four slopes was then considered as the index of baroreflex sensitivity (in ms/mm Hg) in each neonate. RESULTS: Spontaneous baroreflex sensitivity was lower in preterm neonates than in term neonates (mean(SD): 4.07 (2.19) ms/mm Hg vs 10.23 (2.92) ms/mm Hg). CONCLUSION: Baroreflex sensitivity can be assessed in term and preterm neonates by studying spontaneous variations in systolic blood pressure alone. This method could be useful for studying the ontogeny of baroreflex sensitivity and might therefore provide information about the maturation of the autonomic nervous system.

Baroreflex↗
PubMed1997

Feasibility of using finger arterial pressure in neonates.

The feasibility of using a Finapres device to reproduce the beat to beat signal of arterial blood pressure in eight neonates was assessed and compared with intra-arterial measurement of arterial blood pressure in the umbilical artery, using a catheter. The two methods gave similar results. Continuous recording of arterial blood pressure in neonates using Finapres is feasible and reliable.

Blood Pressure↗
PubMed1995

[Heart and sudden infant death. Anatomopathological study of 100 cases].

BACKGROUND: Post-mortem examination of infants with sudden infant death syndrome (SIDS) is essential for understanding the cause and/or mechanism of death. This study aims to evaluate the contributions of heart in SIDS. POPULATION AND METHODS: Between 1981 and 1990, the CHU of Nantes carried out autopsies on 162 cases of sudden infant death syndrome. One hundred files were accepted for this retrospective study because a second recent macroscopic and microscopic (11 samples for each heart) examination of heart was possible. RESULTS: The weight of hearts was not increased, except in one case. Macroscopic examination did not reveal any cardiac abnormalities. Histological examination confirmed the lesions initially observed in 11 cases and probably responsible for their death. CONCLUSIONS: This study underlines the importance of studying numerous samples of each heart of microscopic examination of many sections.

Autopsy↗
PubMed1994

[Hospital transfer of newborn infants in the Loire-Atlantic area (France)].

The rate of neonatal referral from the site of birth to a special care centre is generally related to the conditions of the pregnancy and the status of the neonate. The purpose of this study was to investigate other factors affecting referral including obstetric procedures, and equipment and personnel environment. A prospective survey of the neonatal population in 9 maternity hospital in the Loire-Atlantique area in France was conducted. There were, 1.316 births and the referral rate was 10.3% with a range of 1 to 24% depending on the originating hospital. After adjustment for gestational age, multivariate analysis revealed that the medical variables were the main factors affecting referral rate (positive gastric smear, adjusted odds ratio, ORa = 62.6; disease, ORa = 37.7; Apgar score 1 min < 7, ORa = 9.4; monitoring abnormality, ORa = 3.2; coloured amniotic fluid, CORa = 2.7; birthweight, ORa = 0.3). A high risk of referral was observed in only one maternity hospital (ORa = 9.4) related to a poor environment index. This center was in close vicinity to another maternity hospital. In a regional referral programme, high risk neonates should be delivered in maternity hospitals near a special care centre. But, in order to keep the rate of referral, with its adverse effect on the mother-baby relation, low, care for neonates with minor disease or only slightly underweight at birth should be cared for in these centers without referral.

France↗
PubMed1993

Response to dobutamine and dopamine in the hypotensive very preterm infant.

A randomised double blind study was designed to evaluate haemodynamic response to dobutamine and dopamine in 20 hypotensive preterm infants of less than 32 weeks' gestation. Neonates initially received dopamine or dobutamine 5 micrograms/kg/min. If mean arterial pressure (MAP) remained below 31 mm Hg, the infusion rate was increased in increments of 5 micrograms/kg/min. If 20 micrograms/kg/min of the initial drug failed to achieve a MAP above 30 mm Hg, it was discontinued and the other drug was administered at the same infusion rate. Left ventricular output (LVO) was measured by pulsed Doppler echocardiography. Mean (SE) MAP increased significantly from 24.4 (1.0) to 32.0 (1.4) mm Hg at a median dobutamine dosage of 20 micrograms/kg/min and from 25.6 (1.2) to 37.7 (1.5) mm Hg at a median dopamine dosage of 12.5 micrograms/kg/min. The percentage LVO increase was +21 (7)% with dobutamine compared with -14 (8)% with dopamine. Dobutamine failed to increase MAP above 30 mm Hg in six infants out of 10, whereas dopamine succeeded in all 10 infants. Six switches from dobutamine to dopamine were thus performed, providing a rise in MAP (29.2 (0.5) to 41.2 (2.0) mm Hg) and drop in LVO (356 (40) to 263 (36) ml/kg/min). These data indicate that dopamine is more effective than dobutamine in raising and maintaining MAP above 30 mm Hg; however dopamine does not increase LVO.

Dobutamine↗
PubMed1991

Intrauterine treatment of thyroid goiters.

A fetal thyroid goiter detected by ultrasonography at 20 weeks of amenorrhea (WA) was diagnosed at 23 WA by a second ultrasound examination and a TSH assay in amniotic fluid. Since a sample of fetal blood at 27 WA showed that hypothyroidism was compensated and that goiter size and amniotic fluid volume were stable, intra-amniotic injection of 300 micrograms of L-thyroxine was delayed until 36 WA. This injection was performed before delivery to avoid potential perinatal complications (dystocia and neonatal respiratory distress) caused by large goiters.

Amniocentesis↗
PubMed1990

Prospective evaluation of the protected specimen brush for the diagnosis of pulmonary infections in ventilated newborns.

The precise diagnosis of lower respiratory tract infection in the critically ill newborn remains a difficult challenge. The bronchoscopic protected specimen brush (PSB) is a reliable method in intubated adults. Because the bronchoscopic procedure is not generally available for young children, Zucker proposed a blind technique for introducing the PSB into the distal airways. His results were promising but were not compared with any bacteriologic reference method. Therefore, we wanted to evaluate this technique in comparison with the open lung biopsy (OLB) when it could be ethically accomplished. Eleven PSB were collected simultaneously with an OLB. The sensitivity of the PSB procedure was 100%, its specificity 88%, its positive predictive value 66%, and its negative predictive value 100%. There were no complications secondary to the PSB procedure. In this short study, the PSB procedure using a blind technique is safe and feasible to obtain uncontaminated specimens in intubated and ventilated newborns, and is largely accurate in identifying the bacterial etiologic agent of lower respiratory tract infection.

Bacterial Infections↗
PubMed1990

[Evaluation of perinatal policy. Result of a survey about birth in Pays de Loire].

A survey was undertaken in 3 French departments of the Pays de Loire from January 1, 1986 to December 31, 1986. Among the 32,876 neonate (NN) population, the authors studied the 2,753 NN who were hospitalized and a control group of 1,458 NN representative of the population of 30,123 NN who were not hospitalized. Socioeconomic patterns of mothers, of their pregnancies and deliveries were studied in both groups. The control group was compared with the data obtained in 1981 at the national level and in 1982 at the local level. This group was used as a reference for the study of hospitalized NN. Intrauterine growth retardation rate was 2.4%, prematurity rate 4.6% of live births, very premature rate (as defined by a gestational age less than 32 weeks) was 0.45% of births. Among the group of hospitalized NN, which represent 8.5% of the general population, the NN were regrouped according to Cullen's classification and their care load estimated according to the Omega score. Thus 2 subgroups were defined: the 2,298 ordinarily hospitalized (Cullen's classes I and II) and the 455 severely sick NN (classes III and IV) i.e. 1.3% of births. One third of the severely ill NN were very prematures. The 2 other thirds presented with respiratory (24%), infectious (24%), malformative (19%) or neurological (13%) diseases. Lengths of stay and Omega scores varied according to the causes for hospitalizations and were inversely correlated with gestational ages (p less than 0.001). Neonatal mortality was 3.3 p. 1,000 births and rate of stillbirths 6.5 p. 1,000.

Adult↗
PubMed1990

[Labioglossopexy in Pierre Robin syndrome. Our experiences apropos of 70 cases].

Pierre Robin syndrome is typically characterized by glossoptosis and retrognathia associated with cleft palate, respiratory and deglutition disturbances. Two morphological tendencies arise out of this 70-patient series, 50 of whom were managed with the same therapeutical regimen, which included labioglossopexy and was associated with only one case of death: "deforming" type Pierre Robin syndrome most commonly follows a favorable course with respect to both function and facial deformations, provided labioglossopexy is carried out sufficiently early. Indeed, this surgical operation allows for prompt restoration of normal function, thereby limiting the dysfunction-deformation vicious circle. This form of Pierre Robin syndrome may find its origin in the embryo's abnormal amniotic environment. "Malformation"-associated Pierre Robin syndrome often presents with combined anomalies, respiratory disturbances that may evolve into severe airway problems, impaired deglutition and abnormal brain development; in most cases, labioglossopexy will dramatically improve the immediate state of the child, although long-term prognosis as regards malformation is rather guarded.

Adolescent↗
PubMed1990

[Birth before 33 weeks gestational age. The significance of in utero-to-birth transfer in the Department of Perinatology].

Systematic transfer of any woman presenting a high risk of delivery before 33 weeks of amenorrhea, for birth within a Perinatology department which was 5 advocated since 1985 (especially at 31 and 32 weeks of amenorrhea) in order to minimize the neurological consequences of the haemodynamic disorders induced by the transfer of these premature babies, has permitted to increase to 40 live newborns without any severe sequelae. This improved management, noticed in three departments (121 PNB in 1988, or a 73 p. cent progression in 4 years), must now take place as early as the 25th week and before the stage of imminent birth, in order for the couple mother-fetus to take advantage, in the same location, of physicians (obstetricians and pediatricians) and technical means suitable for this rare and severe pathology that is prematurity.

Female↗