Paediatrics and International Child Health最新文献

Background: Myocardial bridging is largely considered to be a benign, symptomless congenital anomaly of the coronary arteries in which the intramyocardial coronary course is partially 'tunnelled' and leads to vessel compression during ventricular systole. There are few data regarding children.

Objective: To report on myocardial bridging observed in children seeking medical help in the paediatric emergency room.

Case presentation: A series of four children aged 6-13 years with symptomatic myocardial bridging but no other underlying cardiac abnormalities is reported. They were admitted to the paediatric emergency department during 2013-2016, three with chest pain after physical activity and one with septic shock.

Results: Heart computed tomography scan in the first three demonstrated myocardial bridging of the left anterior descendent coronary artery's branches; their 2-year follow-up was uneventful. The fourth patient presented with ventricular fibrillation 24 hours after admission and at autopsy there was an intramyocardial tract 4 cm long on the left anterior descendent coronary artery.

Conclusions: This case series demonstrates that myocardial bridging can be symptomatic in children with no underlying cardiac disorders and should be included in the differential diagnosis of exertional chest pain and/or arrhythmias.Abbreviations: CRP, C-reactive protein; CT, computed tomography; D1, diagonal 1 artery; ECG, electrocardiogram; ED, emergency department; KD, Kawasaki disease; LAD, left anterior descending coronary artery; MB, myocardial bridging; RI, ramus intermedius artery; TN, troponin.

A 12-year-old boy presented with a 1-year history of episodes of spontaneous bleeding from multiple sites lasting for a few minutes. His medical history was unremarkable and all the episodes of bleeding began after he was separated from his aunt to whom he was very much attached. She had moved out of their home following her marriage. All haematological investigations were normal. He was diagnosed with haematohidrosis secondary to adjustment disorder, and behavioural therapy was advised and propranolol prescribed. At present he is asymptomatic and on regular follow-up.Explanations of terms used in the text: Adjustment disorder: maladaptive response to a psychosocial stressor in an individual with significant difficulty coping with a stressful psychosocial event; anxiolytics: medication that reduces anxiety; chromohydrosis: secretion of coloured sweat; haematochezia: passage of fresh blood through the anus, usually in or with stools; haematohidrosis: sweating blood; oto-erythrosis: spontaneous bleeding from the ear; otorrhagia: haemorrhage from the ear; vicarious menstruation: cyclical bleeding outside the uterine cavity during the menstrual cycle.

Background: Coeliac disease (CD) causes deficiency of various micronutrients including vitamin D, and there are no specific guidelines for treatment.

Aims: To determine the prevalence of vitamin D deficiency in children newly diagnosed with CD and the role of oral high-dose vitamin D in its treatment.

Methods: Calcium intake, sun exposure and biochemical and radiological parameters related to vitamin D deficiency were compared between 60 children aged 0-18 years diagnosed with CD and 60 healthy age- and sex-matched controls. The cases with serum 25(OH)D (<20 ng/ml) were given oral vitamin D (60,000 IU/week) and calcium (500 mg/day) for 12 weeks, along with a gluten-free diet (GFD); they were re-evaluated within a week of completion. The primary outcome measure was the serum 25(OH)D level, and secondary measures included serum calcium, phosphorus, alkaline phosphatase, parathormone and clinical and/or radiological rickets.

Results: The prevalence of vitamin D deficiency (25(OH)D <20 ng/ml) was significantly greater in the cases (n=38, 63.3%) than in the controls (n=27, 45.0%). Upon treatment, all 38 cases with vitamin D deficiency showed a significant rise in 25(OH)D levels along with normalisation of other biochemical abnormalities. Two children had 25(OH)D levels >100 ng/ml with no other feature suggestive of vitamin D toxicity.

Conclusions: Vitamin D deficiency is more prevalent in children with CD. Administration of oral high-dose vitamin D for 12 weeks along with a GFD leads to a robust response, indicating rapid mucosal recovery. The vitamin D dosage recommended for malabsorption states may be excessive in CD.Abbreviations: ALP: alkaline phosphatase; CaBP: calcium-binding proteins; CD: coeliac disease; GFD: gluten-free diet; PTH: parathormone; RU: reproducibility units; 25(OH)D: 25 hydroxy vitamin D.

Background: Anaemia is a significant cause of mortality in children in sub-Saharan Africa where blood transfusion is often available only at referral hospitals. Understanding the pattern of referrals by health facilities is essential to identify the delays that affect child survival.

Aim: To determine if there was a correlation between change in haemoglobin (Hb) level and distance from referring facilities to Kamuzu Central Hospital (KCH) in Malawi, and whether distance affected mortality rates.

Methods: This was a retrospective cohort study of 2259 children referred to KCH whose Hb was measured at the referring facility or at KCH. Maps were created using ArcGIS® software. The relationship between distance from KCH and change in Hb was assessed by χ² analysis and multiple linear regression with SAS© software.

Results: The majority of children were referred by health facilities in the Lilongwe District. When categorised as Hb <4, 4-6 or >6 g/dL, 87.0% of children remained in the same category during transfer. There was no significant relationship between Hb drop and distance from KCH. Distance from KCH was not a significant predictor of Hb level at KCH or Hb change. However, mortality rates were significantly higher in facilities that were 10-50 km from KCH than in those which were <10 km away.

Conclusions: Using distance as a proxy for time, this suggests that referring facilities are transferring children sufficiently quickly to avert significant reductions in Hb. Despite this, there is a need to identify the factors that influence the decision to transfer anaemic children.

Tuberculous meningitis (TBM) is now uncommon in high-income countries. It is the most severe form of extrapulmonary tuberculosis with high rates of mortality and morbidity if diagnosis and treatment are delayed. An 8-month-old girl with TBM who was treated with high-dose intravenous anti-tuberculous drugs (ATD) is reported. Therapeutic drug monitoring (TDM) of isoniazid and rifampicin was undertaken by measuring serial drug concentrations in serum and cerebrospinal fluid (CSF). There was rapid eradication of Mycobacterium tuberculosis from the CSF with a good clinical outcome and no adverse effects. Using high-dose regimens of intravenous ATD to treat TBM is an important option in order to obtain sufficient CSF diffusion. When available, TDM and a multidisciplinary approach are essential for efficient therapeutic management.

Background: Young children (<5 years) and children living with HIV in contact with an adult with tuberculosis (TB) should receive TB preventive therapy (TPT), but uptake is low.

Aims: To determine gaps in the uptake of and adherence to TPT in child TB contacts under routine primary care clinic conditions.

Methods: A cohort of child TB contacts (age <5 years or living with HIV <15 years) was followed at a primary care clinic in Johannesburg, South Africa.

Results: Of 170 child contacts with 119 adult TB cases, only 45% (77/170) visited the clinic for TPT eligibility screening, two of whom had already initiated TPT at another clinic. Of the 75 other children, 18/75 (24%) commenced TB treatment and 56/75 (75%) started TPT. Health-care workers followed the guidelines, with 96% (64/67) of children screened for symptoms of TB and 97% (36/37) of those symptomatic assessed for TB, but microbiological testing was low (9/36, 25%) and none had microbiologically confirmed tuberculosis. Only half (24/46, 52%) of the children initiating TPT completed the 6-month course. Neither sociodemographic determinants (age, sex) nor clinical factors (HIV status, TB source, time to TPT initiation) was associated with non-adherence to TPT.

Conclusion: Most child contacts of an adult TB case do not visit the clinic, and half of those initiating TPT did not adhere to the full 6-month course. These programme failures result in missed opportunities for early diagnosis of active TB and prevention of progression to disease in young and vulnerable children.