[Psychosocial issues of mothers whose children have sickle cell disease]. / Vécu psychosocial des mères d'enfants drépanocytaires.

OBJECTIVES: To study and describe the psychological responses (depression and anxiety), the coping strategies, and the impact of sickle cell disease on the quality of life (QOL) of mothers. PATIENTS AND METHODS: A cross-sectional study of mothers with affected children was conducted at the university hospital center of Brazzaville, between February and April 2014. Hamilton and Beck scales, the Brief-COPE, and the Short Form Health Survey were used to assess anxiety, depression, coping strategies, and QOL, respectively. RESULTS: In all, 104 mothers of children with sickle cell disease were surveyed. Of the subjects, 73 (70.2%) had depression and 85 (81.7%) anxiety, while 19 (18.3%) mothers were neither anxious nor depressed. The study shows that depression occurred more often among mothers whose children presented with at least three vaso-occlusive crises (CVO) requiring hospitalization per year (OR=5.1; range=1.8-13.9), at least one blood transfusion (OR=6; range=2.3-15.5), and those whose disease had been known for at least 5 years (OR=3; range=1.2-7.2). On the contrary, maternal anxiety was influenced only by the number of transfusions and CVO requiring hospitalization. The main coping strategy was religious coping (65.4%) followed by acceptance (60%). The QOL of mothers with affected children was impaired in 56.7% of cases. Altered QOL was related to the number of hospitalized CVO per year, i.e., equal to or greater than 3 (OR=6.5; range=2.1-19.6 [P<0.01]), and the number of blood transfusions equal to or greater than 1 (OR=2.9; range=1.2-7.3 [P<0.025]). CONCLUSION: Sickle cell disease is a heavy burden for mothers caring for these children. Mental health disorders are present at the time of diagnosis and in everyday life.

Hernies ombilicales étranglées chez l'enfant au Centre Hospitalier et Universitaire de Brazzaville

Introduction : Dans le but d'améliorer la prise en charge des hernies ombilicales étranglées, une étude descriptive à recueil rétrospectif couvrant la période de janvier 2008 à décembre 2013 soit en 6 ans, a été réalisée dans le service de chirurgie pédiatrique portant sur les enfants opérés en urgence pour une hernie ombilicale étranglée. Matériel et méthodes : Les enfants de 3 mois à 15 ans, hospitalisés pour une hernie ombilicale étranglée et dont les dossiers étaient exploitables ont été retenus. Les paramètres étudiés étaient : la fréquence, l'âge, le sexe, le niveau socio-économique, la période saisonnière, le délai de consultation, le mode de révélation de l'étranglement, la voie d'abord, le viscère hernié, les gestes pratiqués et l'évolution post-opératoire. Résultats : Au total, 134 enfants ont été traités pour hernie ombilicale pendant cette période. Parmi eux, 39 cas (29%) l'étaient pour une hernie ombilicale étranglée. Ils avaient un âge moyen de 3,5 ans [extrêmes : 3 mois et 15 ans]. Le délai moyen de consultation était de 52 heures [extrêmes : 5 heures et 192 heures]. Trente-neuf (100%) cas avaient une masse ombilicale douloureuse irréductible. Le diamètre du collet herniaire variait entre 0,5 à 1,5 cm. L'incision curviligne péri-ombilicale inférieure était réalisée dans tous les cas. L'intestin grêle était le principal organe retrouvé dans le sac herniaire (79,5%). Une nécrose intestinale était notée dans 4 cas (10%) dont 3 avaient consulté au-delà de 72 heures, ayant nécessité une résection intestinale suivie d'une anastomose iléo iléale termino-terminale. Six (15%) cas de suppuration pariétale ont été notés. Conclusion : Le risque de nécrose intestinale retrouvé dans notre étude nécessite que la prise en charge soit précoce. Ainsi lorsque la taille du collet ombilical est inférieure ou égale à 1,5 cm, l'acte chirurgical s'impose

[Epidemiology and outcome of Congolese children who had surgery for heart defects]. / Épidémiologie et devenir des enfants congolais opérés pour cardiopathies congénitales.

AIMS: to determine the principal heart defects for which children underwent surgery and to determine the survival rate. PATIENT AND METHODS: this retrospective cohort study involves Congolese babies treated surgically from September 1989 to September 2010 in France for congenital heart defects (through "Mécénat chirurgie cardiaque" and "Chaîne de l'espoir"). It includes only 110 of the 182 recorded patients during the study period. RESULTS: The sex ratio for the 110 subjects included in the analysis was 1. Their mean age at surgery was 77.4 ± 57.6 months old (range: 8 to 204 months). The main congenital heart defects for which surgery was performed were ventricular septal defect (21.9%), tetralogy of Fallot either isolated (22.8%) or associated with patent foramen ovale (1.8%) or coronary anomalies (1.8%), atrial septal defect associated with other malformations (8.2%), pulmonary atresia with ventricular septal defect (5.5%), aortic stenosis (3.7%), atrioventricular septal defect (0.9%), and Laubry-Pezzi syndrome (0.9%). The median length of follow-up was 42.4 ± 35.6 months (range, 3-240 months). Patients' mean age at the study's end was 121.1 ± 86.3 months (range 20-372 months). The 5-year survival rate was 90% and the 20-year survival, 83.3%. CONCLUSION: Heart surgery for congenital heart defects has improved survival.

[Short-term prognosis of heart diseases managed at the pediatric intensive care unit of the Brazzaville University Hospital]. / Pronostic immédiat des cardiopathies prises en charge dans le service des soins intensifs pédiatriques du CHU de Brazzaville.

OBJECTIVE: To determine the main heart diseases of children admitted to our pediatric intensive care unit. PATIENTS AND METHODS: This cross-sectional study was conducted in 2011 (January to December) in the pediatric intensive care of the Brazzaville University Hospital. RESULTS: The study included 42 children, 27 of them girls (64.3%). Their mean age was 2.6 ± 3.4 years, and the mean age of their mothers 26.6 ± 5.1 years. The reasons for admission were dyspnea (n = 34, 81%), fever (n = 21, 50%), edema syndrome (n = 8, 19%), squatting (n = 5, 12%), impaired consciousness (n = 4), seizures (n = 3, 7.1%), shock (n = 2, 4.8%), and malaise (n = 1, 2%). Associated signs included coughing (n = 30, 71.4%), impaired general condition (n = 14, 33.3%), cyanosis (n = 9, 21.4%), and chest deformity (n = 15, 35.7%). Heart failure was found in 28 cases (66.7%), as was congenital heart disease. The main heart diseases were ventricular septal defects (n = 13), cardiomyopathy (n = 9), and the tetralogy of Fallot (n = 6). The most common factors of decompensation were anemia (n = 12, 28.6%) and bronchopneumonia (n = 11, 26.2%). The immediate mortality rate was 23.8%. CONCLUSION: The heart diseases in children admitted in critical situations usually required surgical care, not available in our country. Rapid treatment is possible by strengthening South-South cooperation with neighboring countries where cardiac surgery is available.

[Priapism in children and adolescents with homozygous sickle cell disease in Brazzaville]. / Priapisme chez l'enfant et l'adolescent drépanocytaire homozygote à Brazzaville.

OBJECTIVE: To determine the prevalence of priapism, assess knowledge and appreciate its characteristics in childhood sickle cell disease. METHODOLOGY: A case-control study was conducted at the University Hospital of Brazzaville (Department of Pediatrics, Hematology and Clinical Urology). The cases consisted of 202 sickle cell anemia who are at least 5 years. Witnesses consisted of 112 children with sickle cell disease not of the same age from the same family as the previous. RESULTS: Priapism was found in 68 (34%) affected children, divided into 54 cases (79.4%) of chronic intermittent priapism and 14 cases (20.6%) of acute priapism. In the control group no cases were observed (p=0.001). Priapism was known by six (3%) patients in the group of children with sickle cell disease. In the control group, it was known by 25 (22.3%) children. It was seen in the group of sickle cell disease as any: 113 children (56%), a natural phenomenon that can occur in life: 57 children (28%), a complication of sickle cell disease: 26 children (13%). In the control group, it was considered a natural phenomenon that can occur in life: 60 children (53.6%), a complication of sickle cell disease: 52 children (46.4%). The average age of priapism occurred in the first episode was 10.4±9.5 years. CONCLUSION: The importance of the prevalence of priapism, and insufficient knowledge needed strengthening information, education and communication with children and their parents.

[Tooth decay in school environment at Brazzaville (Congo)]. / La carie dentaire en milieu scolaire a Brazzaville (Congo).

AIM: To determine the frequency of dental caries and habits that can be the cause of this disease in Brazzaville. METHODS: A prospective study was conducted in primary schools between February and May 2010. This study involved a sample of 307 students of both sexes, aged 4-15 years from school in the city of Brazzaville. RESULTS: Prevalence of dental caries was 53.4% and the index of DMFT 2.06. Use of toothbrush was 99.4%. Two children (0.7%) brushed their teeth three times a day. There was a statistical link between regularity of brushing and occurrence of caries. The prevalence of caries was of 53% in children who brushed once a day and 12.8% in those who brushed twice a day. No decay was noted in those who brushed three times a day (p = 0.001). The DMFT was 2.06 in children who used non-fluoridated toothpaste and 1.13 in those who used the fluoridated toothpaste (p = 0.002). CONCLUSION: To ensure students a better oral hygiene and healthier teeth, a module in oral health education in schools is one of the way to fight against this public health problem.

Methicillin-resistant Staphylococcus aureus endocarditis and de novo development of daptomycin resistance during therapy.

Daptomycin resistance in Staphylococcus aureus has been previously reported, but the development of resistance while on therapy with subsequent clinical failure for endocarditis has been infrequently reported. A case of persistent methicillin-resistant S aureus (MRSA) bacteremia in the setting of right-sided endocarditis in a 38-year-old man with a history of intravenous drug use is presented. He developed de novo resistance to daptomycin during therapy after several courses of antibiotics, with subsequent clinical failure. Isolates were identified by molecular characterization to be community-acquired MRSA 10 (USA300). To the authors' knowledge, the present case was the first in Canada to involve the de novo development of daptomycin resistance with clinical failure due to MRSA during therapy for endocarditis. Clinicians and microbiologists must be aware of this phenomenon given the implications for treatment and transmission of the strain. It also raises questions regarding the use of daptomycin in settings of heavily pretreated patients with persistent MRSA bacteremia.

Prevalence of virulence markers of enteric Campylobacter in France and Tunisia.

Forty-nine strains of Campylobacter jejuni and C. coli were isolated from the stools of 49 patients clinically documented for diarrhoea and fever, and living either in the Paris metropolitan area (30) or in the Tunis area (19). The strains were identified biotyped, serotyped and studied for association with HeLa cells and the ability to elongate Chinese ovary cells (CHO). The C. jejuni biotype I was more frequent among Tunisian strains and the C. jejuni biotype II was more frequent among French strains. Twenty-four strains associated with HeLa cells (A phenotype) and 21 elongated CHO (E phenotype). These 2 phenotypes were independently distributed in individual strains and were not related to the biotypes. We defined 4 pathovars according to the presence (A and E) or absence (a and e) of these 2 markers. The prevalence of the 4 pathovars was not correlated with the origin of the strain. The lack of a virulence marker (phenotype a/e) was correlated with the lack of clinical signs of diarrhoea and fever (p = 4 x 10(-5)). We concluded that at least 1 of the 2 in vitro virulence markers is related to the pathogenicity of the strains in the humans.

Association with HeLa cells of Campylobacter jejuni and Campylobacter coli isolated from human feces.

We developed a rapid in vitro test for determining the association of Campylobacter jejuni and C. coli with HeLa cells. Association was expressed as a weighted mean of the number of bacteria associated with one cell in an association index (AI). The reproducibility of the AI was checked by repeating the test six times, using four strains chosen at random. Means and standard deviations of the means were 7.3 +/- 1.2, 6.8 +/- 0.9, 1.8 +/- 1.2, and 0.1 +/- 0.2. The experimental conditions for which the results are reliable have been standardized. Among 42 strains from human feces, two groups appeared: for 22 nonassociative strains (52%), AI values ranged from 0.0 to 2.1 (mean +/- SD, 0.5 +/- 0.6); for 20 associative strains (48%), AI values ranged from 3.5 to 8.3 (mean +/- SD, 6.2 +/- 1.4). Of these 42 strains, 17 were clinically documented. Diarrhea occurred more frequently in patients infected with associative strains than in those infected with noninvasive strains (7/7 versus 3/10, P = 0.01). Fever also occurred more frequently in patients infected with associative strains (6/7 versus 2/10, P = 0.03). Transmission electron microscopy and viable counts made after killing of extracellular bacteria by gentamicin support the fact that associated Campylobacter spp. are adherent to the cell membrane and are internalized into cytoplasmic vacuoles. The described test seems to be a convenient and rapid method for estimating the pathogenicity of a given strain.

Risk and consequence of infection at the site of microsurgical repair: an experimental model.

The consequences of postoperative infection at the site of microsurgical repair were studied. The experiment used 60 Wistar rats which were divided into 3 groups of 20 each. The femoral artery, vein, and nerve were transected unilaterally and repaired using microsurgical techniques. Staphylococcus aureus was then inoculated into the wound of group 1. Beta-hemolytic Streptococcus was inoculated into the wound of group 2. Group 3 rats served as controls. Clinical, anatomical, bacteriological and histopathological examinations were performed on postoperative days 8 and 30. Wounds in which S. aureus was inoculated demonstrated a significant tendency toward vascular thrombosis with extensive tissue destruction. In the majority of these cases, the necrosis caused by the primary infection engendered an associated, opportunistic infection. Streptococcal inoculations in group 2 demonstrated less severe changes than in group 1. These changes were characterized by injury of the vascular structures themselves with a significant tendency for thickening of the arterial wall, perivascular inflammation, and hematoma formation at the site of the repair. This model allows demonstration of the enzymatic and toxic consequences of bacterial infection in a postoperative site characterized by cellular destruction and interstitial edema surrounding foreign bodies represented by sutures.

[Modification of intestinal colonization and translocation of Campylobacter jejuni by erythromycin and an extract of Lactobacillus acidophilus in axenic mice]. / Modification par l'érythromycine et un extrait de Lactobacillus acidophilus de la colonisation de l'intestin et de la translocation de Campylobacter jejuni chez la souris axénique.

Erythromycin (15 mg) or lyophylized heat-killed Lactobacillus acidophilus (80 mg) were administered per os daily in germ-free mice infected at day O with 10(7)-10(8) Campylobacter jejuni per os. Bacterial colonization of intestine and bacterial translocation of C. jejuni toward mesenteric lymph nodes, blood and liver were then studied for 5 days. The results were compared with those from an infected untreated control group. Compared to the control group, the numbers of free and mucosa-associated bacteria decreased at day 5 in the erythromycin-treated group and the number of mucosa-associated bacteria was reduced from day 1 to day 5 in the Lactobacillus-treated group. Both treatments reduced the frequency of bacterial translocation toward mesenteric lymph nodes from day 1 to day 5. We concluded that both erythromycin and heat-killed L. acidophilus are effective in treating Campylobacter infection in mice, though probably through different mechanisms.

[Activity of amoxicillin and ampicillin against infection with Salmonella typhimurium in mice ]. / Comparaison de l'ampicilline et de l'amoxicilline comme traitement de l'infection expérimentale de la souris par Salmonella typhimurium.

Experimental mouse intraperitoneal or intragastric infection due to Salmonella typhimurium C5 was treated with subcutaneous amoxicillin or ampicillin. The minimum inhibitory concentrations (MIC) and the minimum bactericidal concentrations (MBC) of the two penicillins were similar. Amoxicillin was significantly more effective than ampicillin in protecting the animals from the lethal effects of the infection. The enumeration of bacteria from spleen and Peyer's patches of the small intestine showed that amoxicillin killed S. typhimurium faster than ampicillin.