Crise vaso-occlusive drépanocytaire sévère: aspects cliniques, étiologiques et thérapeutiques au CHU Sylvanus Olympio de Lomé / Clinical, aetiological and therapeutic features of severe sickle cell related vaso-occlusive crisis at the Sylvanus Olympio University Hospital, Lomé

Introduction: la crise vaso-occlusive (CVO) est la plus fréquente manifestation de la drépanocytose et la première cause d´hospitalisation des enfants atteints. L´objectif de cette étude est de décrire les aspects cliniques des CVO sévères, de déterminer les étiologies des syndromes infectieux qui les accompagnent et de décrire leur prise en charge. Méthodes: il s'agit d'une étude transversale descriptive portant sur 137 drépanocytaires majeurs hospitalisés pour CVO sévères du 1er janvier 2009 au 31 décembre 2011 dans le service de pédiatrie du CHU Sylvanus Olympio. Résultats: les drépanocytaires homozygotes SS étaient les plus nombreux (n=98; 71,5%), suivis des doubles hétérozygotes SC (n=28; 20,5). Le délai moyen de consultation était de 4,7 ± 4,4 jours. Le traitement avant l´admission comportait des antibiotiques (28,5%). Les CVO étaient surtout ostéo-articulaires (70,8%). Dans 98,5% des cas, une infection bactérienne associée a été confirmée (48,9%) ou présumée (49,6%). Les principales étiologies étaient le syndrome thoracique aigu (26,3%), l´ostéomyélite aiguë (10,9%), l´infection urinaire (6,6%), la septicémie (3,6%). Un germe a été isolé chez 14,6% des patients, Escherichia coli (30%) étaient en tête suivi de Klebsiella pneumoniae (25%), Staphylococcus aureus (15%), Salmonella typhi (10%), Streptococcus pneumoniae (5%), le Streptocoque D (5%), l´Enterobacter (5%) et l´Acinetobacter (5%). Le taux de mortalité était de 2,2%. La durée moyenne d´hospitalisation était de 11,4 ± 8,8 jours. Conclusion: les CVO drépanocytaires sévères sont en majorité associées aux infections bactériennes en milieu tropical. Une antibiothérapie adaptée et précoce constitue le moyen thérapeutique indispensable pour prévenir ou traiter ces patients.

Introduction: vaso-occlusive crisis (VOC) is the most common manifestation of sickle cell disease and the leading cause of hospitalization among affected children. The purpose of this study is to describe the clinical features of severe VOCs, to determine the etiologies of infectious syndromes that accompany them and to describe their management. Methods: we conducted a descriptive cross-sectional study of 137 adult patients with sickle cell disease hospitalised for severe VOC in the Paediatric Department of the Sylvanus Olympio University Hospital from 1 January 2009 to 31 December 2011. Results: the majority of patients (n=98; 71.5%) had homozygous sickle cell (SS), followed by double heterozygous SC disease (n=28; 20.5). The median of consultation time was 4.7 ± 4.4 days. Treatment before admission was based on antibiotics (28.5%). VOCs were mainly osteoarticular (70.8%). In 98.5% of cases, an associated bacterial infection was confirmed (48.9%) or suspected (49.6%). The main etiologies included acute chest syndrome (26.3%), acute osteomyelitis (10.9%), urinary tract infection (6.6%) and septicaemia (3.6%). One germ was isolated from 14.6% of patients: Escherichia coli (30%), followed by Klebsiella pneumoniae (25%), Staphylococcus aureus (15%), Salmonella typhi (10%), Streptococcus pneumoniae (5%), Streptococcus D (5%), Enterobacter (5%) and Acinetobacter (5%). Mortality rate was 2.2%. The average length of stay in hospital was 11.4 ± 8.8 days. Conclusion: severe sickle cell related vaso-occlusive crisis is mainly associated with bacterial infections in tropical environments. Appropriate and early antibiotic therapy is the essential therapeutic means to prevent or treat these patients.

Severe Acute Bacterial Infections in Children With Sickle Cell Disease in Togo.

BACKGROUND: Bacterial infections are considered a major cause of morbidity and mortality in patients, especially children, with sickle cell disease. OBJECTIVES: This study aims at determining, a year after the introduction of the 13-valent pneumococcal conjugate vaccine the distribution of severe acute bacterial infections and germs in children with sickle cell disease. PATIENTS AND METHODS: Records of children 0 to 15 years of age and admitted from January 1, 2015 to December 31, 2019 (5 y), were examined retrospectively in the four sickle cell monitoring units in Lomé. RESULTS: The main infections found were pleuropulmonary (46.1%), urinary tract (32.8%), and osteoarticular (9.3%). A germ was isolated in 139 of the 265 cases (52.4%). 65.5% of the microorganisms isolated were Gram-negative organisms, with mostly Escherichia coli (31.6%) , and Klebsiella pneumoniae (18%) being the main germs. They were mainly responsible of urinary tract and osteoarticular infections. The majority of these Enterobacteriaceae was Extended-Spectrum Beta-Lactamase-Producing (41.1%, n = 37). Gram-positive cocci were represented by Staphylococcus sp (25.9%), Streptococcus sp (4.3%), Streptococcus pneumoniae (2.9%), and Enterococcus (1.4%). Staphylococcus aureus was the most common germ in pleuropulmonary (40%), osteoarticular (47.3%), and sepsis (28.6%) infections. CONCLUSION: Even if the infections found remained classic, there is a redistribution of germs with a decline in Salmonella and increase of Escherichia coli , Klebsiella pneumoniae , and Staphylococcus aureus .

Management of acute sickle cell priapism in an African (Togo) pediatric department includes conservative measures and intracavernous epinephrine which is safe and efficacious.

Priapism is a well-known urologic complication of sickle cell anemia. This study describes the results of a protocol for the treatment of acute priapism by intracavernous injection of epinephrine due to unavailability of etilefrine. A descriptive cross-sectional study of 18 cases of acute priapism in sickle cell patients treated in the pediatric department of the Sylvanus Olympio CHU from January 1 to December 31, 2020. The average age was 21.7 ± 7.7 years, the youngest patient was 8 and the oldest was 32 years old. Students represented 61.1% of the patients. The hemoglobin profiles were homozygous SS (n = 14) and double heterozygous SC (n = 4). Most of the crisis (83.3%) occurred at night. Most of the patients (66.7%) came to the hospital before the sixth hour of crisis, one patient came by the 48th hour. Walking was the most self-relief method tried by patients (67%). It was followed by a cold penile bath, attempted urination, body bath, and lastly lukewarm bath. Fourteen patients had a history of chronic intermittent priapism. The average pain intensity was 9.5 ± 0.9 with restlessness (33.3%) and crying (33.3%). Fifteen patients were treated upon admission with an intracavernosal injection of epinephrine, and three patients were first drained. Thirteen patients achieved remission immediately, while five patients required a second injection and only one had to be drained before remission. Tolerance was good. One patient had a borderline systolic blood pressure. One erectile weakness case was noticed and no cases of sexual impotence. Epinephrine by intracavernosal injection is an efficient treatment for acute priapism in sickle cell patients. Epinephrine, which has a good tolerance in pediatric and young adult patients, should be used in lieu of etilefrine due to its unavailability in areas where it is unavailable.

Maternal and neonatal complications of childbirth among adolescents at the Sylvanus Olympio University Hospital Centre (CHU-SO), Lomé

Objective: To determine maternal and neonatal complications occurring at childbirth among adolescents.Materials and methods: This is a retrospective, descriptive study conducted from 1st July to 31st December 2019 at the maternity ward of the Sylvanus Olympio University Hospital Centre (CHU- SO), Lomé, Togo. The socio- demographic parameters of the mothers, details of prenatal and perinatal events and the clinical profile of the newborns at birth were studied. Results: The records of 332 adolescent mothers were studied. The average age of the mothers was 17.4 ± 1.5 years, with a range of 13-19 years. The pregnancies in two-thirds (66.3%) were supervised in centres without surgical facilities and by midwives in 83.1% of cases. A little over half of the mothers (53.3%) attended at least four antenatal clinic sessions, while 3.6% attended none. The modes of delivery were spontaneous vaginal (62.3%) and Caesarean section (35.2%). Complications of pregnancy were recorded in 12.9% of the mothers. There were statistically significant associations between the referred status of the mothers and haemorrhages, retained placenta and sepsis (p = 0.001, 0.038 and 0.011, respectively). There were no maternal deaths. The newborn babies required resuscitation in 6.3% of cases, while 7.0% were stillborn.There was a statistically significant relationship between the referred status of mothers and the occurrence of perinatal deaths (p =0.0001). Conclusion: Adolescent mothers are at risk of complications during childbirth, and these risks are increased by poor antenatal care and attempted deliveries in centres without surgical facilities.

[Etiological and evolving profile of renal disability of children in hospital in Togo]. / Profil étiologique et évolutif de l'insuffisance rénale de l'enfant en milieu hospitalier au Togo.

OBJECTIVE: To determine the etiological and evolutionary profile of renal failure of chidren in Togo. METHODS: This is a cross-sectional study over the period of 12 months (2016-2017) including children aged 1 to 18 years hospitalized in the pediatric ward of Sylvanus Olympio university teaching hospital of Lome (Togo) for renal failure. RESULTS: Of 2374 patients hospitalized in our unit, 58 (2.4%) had renal failure. The mean age was 8.17±4 years with a sex ratio of 1.32. The average consultation time was 11.9 days. The mean duration of hospitalization was 12.7±7.7 days. Thirty-seven patients (63.8%) were referred from a peripheral center. Thirty-seven children out of 58 (63.1%) were oligoanuric. Renal failure was acute in 94.8% and chronic in 5.2%. Anemia was found in 84.4% of children. The main etiologies found were severe malaria (63.8%), glomerulonephritis (10.3%) and nephrotic syndrome (10.3%). Thirteen children (22.4%) benefited from dialysis sessions. The evolution was favorable in 79.3% of the cases. CONCLUSION: The renal failure of child is relatively common in our daily practice. The low socio-economic level and the lack of adapted equipment make the care difficult.

Knowledge, attitude and practice of the mothers with anemia of children under five years old in the peadiatric department at Sylvanus Olympio teaching hospital in Lomé.

BACKGROUND: Anemia remains a major cause of morbidity and mortality of children in Togo despite of prevention effort, due to the parents lack of implication. AIM: To determine the knowledges, attitudes and practices of mothers, with anemia ofchildren under five years old Methods : Knowledge Attitudes and Practice survey from the first of february to 31 ofmarch 2012, about an interview of a hundred mothers with children under 5, randomly selected in the consultation, vaccination waiting rooms and in the hospitalisation. RESULTS: Forty mothers had never heard about anemia. Health personnel was the main source of mother's information (29%), mass media represented 8% of mothers information source (radio 5%; television 3%). The decreased of blood in the body is the most given definition from the mothers (44%). Malaria (24%) and malnutrition (19%) were the main causes cited by mothers. Iron deficiency has been mentioned by 3% of the mothers. Palmar - plantar pallor (32%) was the clinical signe the best known by the mothers. Most of the mothers (90%) had never assist to an information education and communication message about anemia prevention. When their children had anemia, 25 mothers (65,8%) took their children to the health center, five mothers (13,2%) had given tomatoes. The use of iron in prophylactic treatment was known by 43% of the mothers. The blend tomatoes and milk was the prophylactic treatment mentioned by 3% of the mothers. Most of the mothers (77%) would advice a mother with a children suffering from anemia to take him to the hospital. The knowledge of anemia by the mothers was correlated to then level of instruction. But the knowledge of prevention did not depend on the instruction level. CONCLUSION: anemia is not well known by the mothers of under five children. It's causes, it's treatment are not well known. Mass media are not very implicated on the subject. The reduction of it's frequency goes by information education and communication activities.

Community screening and treatment of asymptomatic carriers of Plasmodium falciparum with artemether-lumefantrine to reduce malaria disease burden: a modelling and simulation analysis.

BACKGROUND: Asymptomatic carriers of Plasmodium falciparum serve as a reservoir of parasites for malaria transmission. Identification and treatment of asymptomatic carriers within a region may reduce the parasite reservoir and influence malaria transmission in that area. METHODS: Using computer simulation, this analysis explored the impact of community screening campaigns (CSC) followed by systematic treatment of P. falciparum asymptomatic carriers (AC) with artemether-lumefantrine (AL) on disease transmission. The model created by Okell et al (originally designed to explore the impact of the introduction of treatment with artemisinin-based combination therapy on malaria endemicity) was modified to represent CSC and treatment of AC with AL, with the addition of malaria vector seasonality. The age grouping, relative distribution of age in a region, and degree of heterogeneity in disease transmission were maintained. The number and frequency of CSC and their relative timing were explored in terms of their effect on malaria incidence. A sensitivity analysis was conducted to determine the factors with the greatest impact on the model predictions. RESULTS: The simulation showed that the intervention that had the largest effect was performed in an area with high endemicity (entomological inoculation rate, EIR > 200); however, the rate of infection returned to its normal level in the subsequent year, unless the intervention was repeated. In areas with low disease burden (EIR < 10), the reduction was sustained for over three years after a single intervention. Three CSC scheduled in close succession (monthly intervals) at the start of the dry season had the greatest impact on the success of the intervention. CONCLUSIONS: Community screening and treatment of asymptomatic carriers with AL may reduce malaria transmission significantly. The initial level of disease intensity has the greatest impact on the potential magnitude and duration of malaria reduction. When combined with other interventions (e.g. long-lasting insecticide-treated nets, rapid diagnostic tests, prompt diagnosis and treatment, and, where appropriate, indoor residual spraying) the effect of this intervention can be sustained for many years, and it could become a tool to accelerate the reduction in transmission intensity to pre-elimination levels. Repeated interventions at least every other year may help to prolong the effect. The use of an effective diagnostic tool and a highly effective ACT, such as AL, is also vital. The modelling supports the evaluation of this approach in a prospective clinical trial to reduce the pool of infective vectors for malaria transmission in an area with marked seasonality.

Treatment of asymptomatic carriers with artemether-lumefantrine: an opportunity to reduce the burden of malaria?

BACKGROUND: Increased investment and commitment to malaria prevention and treatment strategies across Africa has produced impressive reductions in the incidence of this disease. Nevertheless, it is clear that further interventions will be necessary to meet the international target of a reversal in the incidence of malaria by 2015. This article discusses the prospective role of an innovative malaria control strategy - the community-based treatment of asymptomatic carriers of Plasmodium falciparum, with artemisinin-based combination therapy (ACT). The potential of this intervention was considered by key scientists in the field at an Advisory Board meeting held in Basel, in April 2009. This article summarizes the discussions that took place among the participants. PRESENTATION OF THE HYPOTHESIS: Asymptomatic carriers do not seek treatment for their infection and, therefore, constitute a reservoir of parasites and thus a real public-health risk. The systematic identification and treatment of individuals with asymptomatic P. falciparum as part of a surveillance intervention strategy should reduce the parasite reservoir, and if this pool is greatly reduced, it will impact disease transmission. TESTING THE HYPOTHESIS: This article considers the populations that could benefit from such a strategy and examines the ethical issues associated with the treatment of apparently healthy individuals, who represent a neglected public health risk. The potential for the treatment of asymptomatic carriers to impair the development of protective immunity, resulting in a 'rebound' and age escalation of malaria incidence, is also discussed.For policymakers to consider the treatment of asymptomatic carriers with ACT as a new tool in their malaria control programmes, it will be important to demonstrate that such a strategy can produce significant benefits, without having a negative impact on the efficacy of ACT and the health of the target population. IMPLICATIONS OF THE HYPOTHESIS: The treatment of asymptomatic carriers with ACT is an innovative and essential tool for breaking the cycle of infection in some transmission settings. Safe and effective medicines can save the lives of children, but the reprieve is only temporary so long as the mosquitoes can become re-infected from the asymptomatic carriers. With improvements in rapid diagnostic tests that allow easier identification of asymptomatic carriers, the elimination of the pool of parasites is within reach.

[Diabetes mellitus in children in Lomé (Togo)]. / Le diabète sucré de l'enfant à Lomé (Togo).

AIM: Describe clinical aspects and outcome of children with diabetes mellitus in Lomé (Togo). METHODS: This work concern eighteen children consecutively admitted between 1997 and 2004 for diabetes mellitus. Diagnosis of type 2 diabetes mellitus (T2DM) were done on the presentation of at least one of T2DM risk factors: obesity, familial history of T2DM, acanthosis nigricans, polycystic ovary syndrome, dislipidemia, high blood pressure. RESULTS: Twelve children presented type 1 diabetes mellitus (T1DM), 5 T2DM and one, corticosteroids induced diabetes. At least one of the first degree parent suffered from diabetes in 4 of the 5 children with T2DM and 4 of the 12 patients with T1DM. Most patients (with T1DM or T2DM) presented polyuria, polydypsia and ketonuria at admission. All patients with T2DM were obese and had lifestyles characterised by high fat intake, sedentary attitudes, and physical inactivity. The corticosteroid induced diabetes cessed when corticosteroid stopped. The other patients were successfully treated with insulin (T1DM) or insulin then exercises and diets (T2DM). CONCLUSION: Clinical presentation of diabetes mellitus is now characterised in Togo by the emergence of T2DM which principal risks factors are obesity and familial history of T2DM.

[Management of priapism in sickle-cell diseases with alpha-adrenergic agonists]. / Prise en charge du priapisme drépanocytaire par médications alpha-adrénergiques.

Priapism is a common complication of sickle cell anemia. Two different patterns are described: acute priapism, a prolonged painful erection generally lasting more than 6 hours, and stuttering priapism, which consist of brief repeated self-resolving episodes. Until 1990, priapism in sickle-cell patients has relied on measures aimed at lowering blood viscosity and acidosis and reducing the level of circulating hemoglobin S (alcalinization, hyperhydration, exsanguinotransfusion). But these means are not consistently successful. Surgical cavernous-venous shunt was proposed after 12 to 24 hours when conservative treatment failed. These therapeutic modalities are based on the pathophysiology of sickle-cell priapism. Priapism in sickle-cell disease may be due to sequestered sickled red cells in the corpus cavernosum with venous outflow obstruction. For some years, the treatment of priapism in sickle-cell anemia was changed by the use of alpha-adrenergic agonists. These therapeutics (mainly etilefrine and epinephrine) were first reserved for priapism resulting from intrapenile injections of vasoactive drugs which are used for the treatment of impotence. In acute priapism, alpha-adrenergic agonists are used in intracavernous injections (ICI). In stuttering priapism, treatment consists in an oral administration associated, if necessary, with self-administered ICI. ICI results mainly depend on when treatment occurs. Detumescence is achieved in patients treated within 30 hours, as opposed to the few patients treated beyond this delay. This finding is in agreement with experimental findings demonstrating histological evidence of necrosis of endothelial cells and cavernous smooth muscle fibers after 24 hours. Surgery is only used after failure of ICI. The result of oral treatment is not very satisfactory because many patients do not respond well or are dependent on ICI. However, self-administered ICI associated with the oral treatment protects patients with stuttering priapism against acute strokes. The safety of alpha-adrenergic agonists is good as both oral and ICI have few side-effects. The excellent efficacy of ICI in sickle-cell priapism leads to suggest that the pathogenic mechanism could involve a neuromuscular dysfunction.