What's new in paediatric sleep in 2007?

In young children, sleep problems are associated with poorer mental and psychological health in their parents, although no clear causal relationship has been established to date. The increase in the number of children presenting with sleep problems puts increasing demand on polysomnography (PSG), which represents the gold standard for the diagnosis of sleep-disordered breathing (SDB). However, PSG is expensive and very time and labour intensive. Screening tools have therefore been developed to identify children at risk for SDB and obstructive sleep apnoea (OSA). Most interestingly, position during sleep influences motor development in infants, with the supine position being associated with significant delays in motor development and the acquisition of motor milestones. The majority of publications have dealt with the neurocognitive consequences of SDB and OSA, and more precisely, individual susceptibility for these adverse effects, involving the level of systemic inflammation as well as the polymorphisms of some genes with a neuroprotective role.     

Fistula in ano in infants: who recurs?

Introduction  Fistula in ano is a common malady in infancy. However, relatively little literature is devoted to it. Our aim was to describe the natural history and identify predictors of which children will ultimately recur. Methods  A retrospective review of patients less than 3 years old undergoing anal fistulotomy was performed between May 2002 and November 2007 at a tertiary children’s hospital. Demographics, preoperative, operative, and postoperative characteristics were collected in each group and evaluated by biostatistical analysis. P values <0.05 were considered significant. Results  A total of 92 children undergoing anal fistulotomy were identified. The median age was 6 months. Twelve children (13%) had recurrences and two of the 12 had multiple recurrences. Children who had recurrences were older (12.9 vs. 7.5 months, P < 0.05) and were more likely to have a previous abscess (20 vs. 6%, P < 0.05). In addition, children with recurrences had pus noted at the time of surgery more than children who did not recur (23 vs. 8%, respectively, P < 0.05). There were no major complications. Conclusions  Fistula in ano in infants is a relatively benign process with most children having no serious sequelae. However, a not insignificant portion (13%) of children developed recurrences. Older children who developed fistulas were more likely to have a recurrence than younger, and children who had previous episodes of perianal abscess or pus noted at the time of surgery were more likely to recur.     

Pattern of acute poisonings in childhood in Ankara: what has changed in twenty years?

Poisoning represents one of the most common medical emergencies in childhood, and epidemiological properties differ from country to country. Thus, special epidemiological surveillance for each country is necessary to determine the problem according to which preventive measures can be taken. The purpose of this study was to clarify the characteristics of acute poisoning cases admitted to a pediatric referral hospital. All poisoned patients under 17 years of age, except for cases food poisoning, presenting to the Emergency Department (ED) from January 1995 to December 2000 were determined. The information about each case was recorded on standardized forms and a retrospective chart review survey was done. Complete epidemiological and clinical data were obtained for 489 patients. The mean age of all poisoned patients (mean +/- standard deviation) was 5.96 +/- 4.87 years, and the age range was 0.01 to 17 years. Three hundred and thirty-one children, forming 63.6% of all patients, were under five years of age. Slightly more boys (52.3%) than girls were intoxicated at ages less than 10 years, after which more girls (79%) than boys were involved. The majority of all cases were due to accidental poisoning (78.1% of all poisonings) which occurred mostly in children under five years of age (73.3%). While accidental poisonings (97.1%) were the most common mode of poisoning between 1-5 years, self-poisonings (67.3%) had the highest ratio in cases over 10 years of age. In patients younger than one year of age, 74.2% of all poisonings were due to therapeutical error. Drugs were the most frequent offending agent (57.7%), followed by ingestion of a caustic/corrosive substance (16.8%) and carbon monoxide (CO) intoxication (9.4%). Analgesics were the most common agents, forming 23.7% of all poisonings due to drugs, followed by ingestion of multiple drugs and tricyclic antidepressants at ratios of 21.6% and 9.6%, respectively. The most common route of poisoning was ingestion of the poison (437/489 patients, 89.4%) and most were ingested inside the house (93.3%). About half of all poisoned patients (50.9%) were admitted to the ED within the first two hours of ingestion, and gastric lavage was performed on about half of the poisoned children (48.7%). In most of the cases, hospital treatment was non-specific, including general measures of decontamination and supportive-symptomatic therapy. During the six-year study period, two patients were lost due to acute poisoning, yielding an overall mortality rate of 0.4%. While most of the poisonings were due to accidental ingestions in infancy and primary school ages without sex predilection, the incidence of self-poisonings, especially in girls, was found to be increased. Analgesics, tricyclic antidepressant drugs (which seemed to form a new and dangerous group) and caustic/corrosive substances were the most commonly ingested agents. The early awareness of poisoning and appropriate therapeutic measures taken seemed to be efficacious with a very low mortality rate. The epidemiological and preventive properties of childhood poisonings should be further searched by prospectively designed multicentered studies throughout our country.     

Untersuchungsergebnisse über Polymyxin B in vivo und in vitro

Zusammenfassung Der Einfluß verschiedener Nahrungsbestandteile auf die bactericide Wirkung von Polymyxin B wurde untersucht. Die minimale Hemmkonzentration des Antibioticum stieg bei Zusatz von Casein mäßig, bei Zusatz von Öl- und Linolsäure beträchtlich an. Die Befunde wurden diskutiert und hypothetisch durch eine spezifische Interferenz ungesättigter Fettsäuren mit der Polymyxinbindung an Bakterienlipoide gedeutet.Direktor Prof. Dr. Ph. Bamberger     

Tuberculosis in children--what has changed in last 20 years?

Several changes have been observed in the epidemiology, clinical manifestations, diagnostic modalities and treatment of tuberculosis. Emergence of HIV epidemic and drug resistance have posed significant challenges. With increase in number of diseased adults and spread of HIV infection, the infection rates in children are likely to increase. It is estimated that in developing countries the annual risk of tuberculosis infection in children is 2.5%. Nearly 8-20% of the deaths caused by tuberculosis occur in children. Lymph node tuberculosis has increased over last two decades. HIV infected children are at an increased risk of tuberculosis, particularly disseminated disease. In last two decades drug resistant tuberculosis has increased gradually. The rates of drug resistance to any drug varied from 20% to 80% in different geographic regions. Various diagnostic techniques such as improved culture techniques, serodiagnosis, and nucleic acid amplification have been developed and evaluated to improve diagnosis of childhood tuberculosis. Serodiagnosis is an attractive investigation but till date none of the tests have desirable sensitivity and specificity. Tests based on nucleic acid amplification are a promising advance. Relatively less experience in children, need for technical expertise and high cost are limiting factors for their use in children with tuberculosis. Short-course chemotherapy for childhood tuberculosis is well established. Treatment with intermittent regimens is comparable to daily regimens. Directly observed treatment strategy have shown encouraging result.     

Should corticosteroids be used in bacterial meningitis in children?

Bacterial meningitis is one of the most serious infections in infants and children, with considerable morbidity and mortality. Despite the spreading of conjugated vaccines against Haemophilus influenzae type b (Hib), the most important pneumococcal serotypes and serogroup C meningococcus has reduced the incidence of this infection in developed countries, it still remains a global public health problem and an important cause of mortality and disability. Whether corticosteroids should be used as a complementary therapy to antibacterials is still not clear because of the disparate findings from clinical trials and clinical evidence. The aim of this review is to analyze the available evidence on the impact of corticosteroid therapy in infants and children with bacterial meningitis in developed countries in order to define whether they should be added routinely in the empiric therapy of such disease. Our analysis concluded that in high-income countries dexamethasone has shown good results to prevent hearing loss in Hib meningitis if administered before or at the same time as the first dose of antibiotics. Dexamethasone should be evaluated in pneumococcal meningitis: it may be less beneficial in children with delayed presentation to medical attention and may be unfavourable in case of cephalosporin-resistant pneumococci. On the contrary, there is no evidence to recommend the use of corticosteroids in meningococcal meningitis. Further studies that take into account the epidemiologic changes of recent years, consider enrolment based on the onset of symptoms and evaluate outcomes such as hearing loss and neurologic sequelae with advanced techniques are urgently needed.     

Bulimia nervosa in adolescents: a disorder in evolution?

BACKGROUND: There are few reports that describe the manifestation of bulimia nervosa (BN) among adolescents. Moreover, none make reference to the comparative clinical manifestation of adolescent BN and adolescent anorexia nervosa. Nor are any reports available of how distinct partial-syndrome BN cases are from those that meet full diagnostic criteria for BN. OBJECTIVES: To describe 3 groups of adolescents, those with a full-syndrome eating disorder (BN and anorexia nervosa) or partial-syndrome BN, and to compare these groups along demographic, general psychopathology, and eating disorder variables. DESIGN: The study population included 120 adolescents with eating disorders who were initially seen at The University of Chicago Eating Disorders Program, Chicago, Ill, for treatment. All participants completed an assessment prior to treatment. MEASURES: Weight and height were obtained from all participants. Participants also completed a baseline demographic questionnaire (eg, menstrual status, ethnicity, family status), Beck Depression Inventory, Rosenberg Self-Esteem Scale, and the Eating Disorder Examination. RESULTS: Partial-syndrome BN cases are clinically quite similar to their full-syndrome counterparts. Only objective binge eating episodes and purge frequency distinguished BN and partial-syndrome BN cases. Anorexia nervosa cases, on the other hand, were quite distinct from BN and partial-syndrome BN cases on almost all variables. CONCLUSION: Early recognition and swift treatment of eating disorders in adolescents, regardless of whether a diagnostic threshold is met, are imperative because they will lead to early intervention thereby potentially improving eating disorder recovery rates.     

Untersuchungsergebnisse über Polymyxin B in vivo und in vitro

Zusammenfassung Die klinische und bakteriologische Wirksamkeit von Polymyxin B gegen den enteropathogene E. coli O 127B 8 wurde an 114 Erkrankungsfällen erprobt. Der positive Polymyxineffekt auf den klinischen Verlauf wurde mit einer neuen Methode objektiviert und durch statistischen Vergleich mit Kontrollgruppen gesichert. Trotz 100prozentiger in vitro-Empfindlichkeit der untersuchten Keime war eine Stuhlsanierung nur bei 60% der Fälle zu erreichen. Die Diskrepanz zwischen der bakteriologischen Wirksamkeit in vitro und in vivo wird durch einen Mangel aktiven Polymyxins im Darmtrakt erklärt, hervorgerufen durch Interferenz von Fettsäuren mit der Polymyxinwirkung. Die altbewährte diätetische Teepause mit stufenweise nachfolgendem Nahrungsaufbau ist als Basisbehandlung daher erneut zu empfehlen.     

Pulmonary Functions in Normal School Children in the Age Group of 6–15 Years in North India

Objective

Lung function tests have become an integral part of assessment of pulmonary disease. As few studies on pulmonary function tests have been carried out in young children in India, the study was carried out in normal urban and rural school children in Ludhiana district of North India to determine pulmonary functions in the age group 6–15 years and to find its correlation with regards to age, sex, height and weight.

Methods

The study group included 600 normal children between 6–15 years age from different urban and rural schools in the region. A preformed questionnaire was interviewed and detailed general physical and systemic examination was done. Pulmonary function tests were measured by using Micromedical Gold standard fully computerized portable auto spirometer (Superspiro Cat No. SU 6000).

Findings

The present study shows, all the three independent variables (age, weight and height) have linear positive correlation with lung function parameters, both for boys and girls. Lung function values in boys were significantly higher as compared to that of girls. Urban children had higher lung function parameters than rural children except IRV, FEF_25%. Among all anthropometric parameters, height was the most independent variable with maximum coefficient of correlation.

Conclusion

Equations derived from the present study for estimation of the expected values of lung function will help to interpret the observed lung function values in children of North India.     

Disseminated leishmaniasis in a four-year-old child in Yaoundé, Cameroon

Leishmaniasis is a disease caused by a protozoan parasite of the genus leishmania with worldwide distribution and is transmitted to man by phlebotomine sand flies. The clinical presentation could range from a single cutaneous ulcer to disseminated leishmaniasis. We report the case of a four-year-old boy admitted to our hospital with ulcers, wasting, progressively distending abdomen, and fatigue evolving for about two months. On admission, he was febrile and pale, with diffuse oozing wet ulcers on the limbs and face, hepatosplenomegaly, and enlarged inguinal lymph nodes. The complete blood count revealed pancytopenia with low reticulocyte count, and serum protein electrophoresis showed hypoalbuminemia and hypergammaglobulinemia. Skin biopsy revealed amastigotes in phagocytic cells. The above findings suggested cutaneous and visceral localization of the leishmania; however, the parents absconded with the boy just when treatment was instituted, believing that the child was bewitched. The outcome is expected to be fatal visceral involvement.     

Surgery results in significant improvement in growth in children with Crohn’s disease refractory to medical therapy

Inflammatory bowel disease (IBD) in children can cause significant impairment in linear growth, and delay in pubertal onset. The aim of this study was to assess the impact of surgery on linear growth in children with Crohn’s disease (CD) who were resistant to medical therapy, and had documented evidence of growth impairment. We performed a retrospective study on eight consecutive patients with refractory disease who had attended the paediatric IBD clinic. All patients underwent surgery as part of their treatment. Height and weight were recorded at least 6 months prior to surgery, at the time of surgery, and 6 months post surgery. Growth velocities and height Z-scores were calculated. All patients had evidence of sustained growth suppression prior to surgery. Three patients had evidence of growth failure. There was a significant increase in height velocity from 0.15 cm/month before surgery to 0.54 cm/month after surgery (P=0.006). There was also a significant decrease in the modified Harvey–Bradshaw index (HBI) of disease activity from 2.00 before surgery, to 0.84 after surgery (P=0.003). Improvements in height Z-score and weight velocity after surgery were not significant on statistical analysis. Our study demonstrates that before surgery, children with CD refractory to therapy have sustained growth suppression, and in some cases may even have growth failure. Surgical intervention before puberty appears to result in a significant improvement in height velocity and disease activity. These findings need to be further investigated with carefully designed prospective studies. G Singh Ranger, MJ Lamparelli and A Aldridge collected the data and wrote the paper. SKF Chong, SG Mitton and A Albanese and Professor Kumar reviewed the paper, provided critical appraisal and statistical input.