Accuracy of a point-of-care testing device in children with suspected respiratory allergy.

Measuring IgE antibodies is useful in the diagnostic workup of allergy and asthma. This study was designed to assess the value of a new point-of-care test (ImmunoCAP Rapid Wheeze-Rhinitis Child [ICR]; Phadia AB, Uppsala, Sweden) in the diagnosis of atopy in children with allergy-like symptoms such as rhinitis, eczema, and recurrent episodes of wheezing. Patients (n = 175; average age, 7.2 years) referred from primary care were consecutively enrolled in two pediatric allergy referral centers in Italy and were assessed during a single visit. The ICR test included egg, milk, house-dust mite, timothy, mugwort, wall pellitory, birch, olive, cat, and dog allergens. ICR results were consistent with 78% of the positive clinical diagnoses. Agreement between negative ICR results and physician's clinical judgment ranged between 92 and 99% for the single allergens and averaged 96% for the complete profile. Overall agreement of ICR versus clinical diagnosis was 93%. A false positive ICR rate of 1% was recorded. ICR was positive for 94% of the patients with at least one positive clinical diagnosis. Based on the agreement between the physician's assessment of the clinical relevance of each allergen and the ICR results, we concluded that ICR could be a useful tool for primary care physicians to rule in or out the clinical relevance of single ICR allergens.

Incremental prognostic factors associated with cow's milk allergy outcomes in infant and child referrals: the Milan Cow's Milk Allergy Cohort study.

BACKGROUND: The prognosis for many children with cow's milk allergy (CMA) is remission within 3 years, and the clinical parameters that predict duration of disease have not been measured incrementally. OBJECTIVE: To prospectively determine prognostic predictors of tolerance in a random cohort of referrals using CMA workup outcomes as covariates and tolerance as the status variable in a duration model of CMA. METHODS: The 2001-2006 Milan Cow's Milk Allergy Cohort (MiCMAC) enrolled children referrals using double-blind, placebo-controlled food challenges (DBPCFCs) as study end points (confirmation of CMA; onset of tolerance). The Cox regression model was used to analyze all clinical factors that contributed to tolerance. Covariates analyzed were skin, gastrointestinal, and respiratory symptoms; history and demographics at presentation; age at diagnosis and DBPCFC outcomes; sensitization (skin and serum) by cow's milk protein fractions; sensitization to other food and inhalant allergens; total IgE levels; specific IgE concentrations for cow's milk protein fractions, other ingestants, and aeroallergens; and threshold doses at DBPCFC. Sensitization and DBPCFC were performed at 6-month intervals. RESULTS: A total of 112 infants were enrolled (mean [SD] age, 13.85 [9.84] months), and 59 achieved tolerance (mean [SD] age when tolerance was achieved, 27.58 [11.81] months). On univariate analysis, asthma and/or rhinitis at presentation was an independent predictor of persistence (hazard ratio [HR], 2.19; 95% confidence interval [CI], 1.26-3.82). On multivariate analysis, predictors of persistence were a fresh milk wheal diameter increment of 1 mm (HR, 1.18; 95% CI, 1.07-1.31) and a positive skin prick test result with soy (HR, 6.99; 95% CI, 1.56-31.25). CONCLUSIONS: This is the first study, to our knowledge, to identify incremental biological predictors of delayed tolerance to cow's milk in children that should be integrated into DBPCFC schedules for CMA in infants.

Anaphylaxis in the emergency department: a paediatric perspective.

PURPOSE OF REVIEW: Correct management of anaphylactic manifestations in the emergency department is crucial to prevent mortality and future episodes, in particular for paediatric patients. We make here recommendations based on a critical review of the evidence for the management of anaphylaxis in emergency department with particular emphasis on children. RECENT FINDINGS: Available information suggests that anaphylaxis must be promptly recognized keeping in mind the airway patency, breathing (ventilation and respiration), circulation and mental status and treated. The first treatment is epinephrine. After successful treatment of an anaphylactic episode, attention must be paid at prevention of early recurrences (biphasic anaphylaxis) and assessment of causes. Patients should not be discharged before prescribing self-injectable epinephrine and explain how and in under what circumstances it must be injected; giving an action plan to be communicated to their communities; inform the school about the possible occurrence of reactions and the appropriate avoidance and rescue measures; and consider the necessity of a Medic-Alert identification. SUMMARY: As gross differences have been described in the awareness of the disease and its management between allergists and nonallergists, allergists should interact with emergency doctors to improve education in this area.

Growth of infants with IgE-mediated cow's milk allergy fed different formulas in the complementary feeding period.

Observational studies have shown that allergic infants, irrespective of the type of diet, show various degrees of growth depression in the first year of life. We investigated whether the type of milk in the complementary feeding period (6-12 months of age) is associated with differences in the increase of standardized growth indices (weight-for-age, WA; length-for-age, LA; and weight-for-length, WL, z-scores) in infants with cow's milk allergy (CMA). Infants with immunoglobulin E-mediated CMA breastfed at least 4 months and progressively weaned in the 5- to 6-month period were randomly assigned to three special formulas, a soy formula (n = 32), a casein hydrolysate (n = 31), and a rice hydrolysate (n = 30). A fourth, non-randomized group was made up by allergic infants still breastfed up to 12 months (n = 32). Groups were compared for WA, LA, and WL z-scores at 6, 9 and 12 months of age. All groups showed low WA and LA z-scores at 6 months of age. Infants fed hydrolyzed products showed a trend toward higher WA z-score increments in the 6- to 12-month period. The use of casein- and rice-based hydrolyzed formulas resulted in higher changes in WA compared with soy formula. Further research should be aimed at optimizing the dietary needs and feeding regimens for infants with CMA.

Ruling out food allergy in pediatrics and preventing the "march" of the allergic child.

When a child presents with an allergic symptom, the general pediatrician needs to discriminate which patient has to be sent to the specialist for an allergologic evaluation. If referred, the child will undergo not only skin-prick test, but also more complex specialistic evaluations that we define here as "the march of allergic children." The objective of this article is to overview the clinical evidence about possible diagnostic interventions to avoid unuseful referrals of children reported with allergy from the general to the specialist level. Data sources include PubMed, using a search algorithm selecting for diagnostic studies of respiratory and food allergy in all children to August 2005. Also included are commentaries based on the authors' clinical experience in the allergy unit of a University Hospital in Italy. No study prospectively assessed the rule-out efficacy of clinical history, physical evaluation, and skin-prick test panels on the allergic disease. Three prospective studies on in vitro panels of specific IgE sensitization matched entry criteria. Diverse trial designs and diagnostic criteria precluded meta-analytic methods. The use of in vitro panels proved effective in ruling out the allergic condition in children. The screening efficacy of panels of food and respiratory skin-prick tests remains to be evaluated. With sensitivities and negative predictive values exceeding 90%, in vitro panels can inform the decisions of pediatricians in their capacity as gateway to specialist care. Avoiding the march of allergic children from the GPs to the secondary level is a more realistic goal than preventing the allergic march.

Clinical tolerance of processed foods.

OBJECTIVE: To review the effects of technological processing on selected foods of relevance to childhood allergy from the viewpoints of reduced allergenicity, contamination of processed foods by allergens introduced during processing, and ad hoc technologies to produce reduced hypoallergenic products. DATA SOURCES: We searched the literature (PubMed/MEDLINE) for articles published between January 1994 and April 2004 using the following keywords: food allergy AND process* OR heat* OR cooking OR toleran*. STUDY SELECTION: We drew on our collective clinical and biological experience to restrict retrieved studies to those of more frequent relevance to a hospital allergy practice. RESULTS: Comparatively few clinical studies address the modification of allergenicity of food through cooking or processing. Dairy foods are largely unaffected by processing and may be contaminated by, or themselves become, hidden allergens. Hypoallergenic formulas based on milk, soy, or rice and homogenized beef are successful applications of allergenicity reduction via technological processing. Egg, fish, condiments, and vegetables all carry heat-resistant allergens and should also be considered contaminants. Cereals and bakery products are generally well tolerated, but their allergenicity may be enhanced by processing; the case of rice is still open. Peanut allergens are stable, and the evidence is scant that thermal processing affects the allergenicity of soybean and soy hydrolysates. The debate is ongoing about the tolerance of vegetable oils. CONCLUSIONS: It is too early to systematize clinical studies based on single procedures. Processing affects antigenicity, but this does not always translate into safety recommendations. Industrial processing is liable to contamination, and monitoring and labeling are industry priorities. Clinicians should evaluate foods by as complete a workup as possible before recommending processed foods.

Microftalmía bilateral congénita con quiste orbitario izquierdo: a propósito de un caso / Microsphtalmos bilateral congenital with cyst orbit left: to purpose of a case

El ojo inicia su desarrollo en período embrionario y luego del nacimiento sufre un proceso de espcialización maduración anatómica y funcional. A lo largo de este proceso, especialmente en la etapa embrionaria pueden aparecer anomalías muy variadas entre las que las que destacan diferentes grados de reducción del tamaño ocular hasta la ausencia total dando lugar a los cuadros de microftalmía y anoftalmía, respectivamente. Se presenta el caso de un lactante menor masculino de tres meses de edad, cuya madre nota ausencia de globos ocualres desde el nacimiento, sin antecedentes personales ni familiares contributorios, en el cual los exámenes revelan Microftalmia Bilateral congénita con quiste orbitario izquierdo hemangioma de párpado inferior izquierdo, es manejado mediante la colocación de expansores ocualres de 6 tamaños, para luego colocar prótesis definitiva