Thomas M. Ball

SIBLINGS, DAY-CARE ATTENDANCE, AND THE RISK OF ASTHMA AND WHEEZING DURING CHILDHOOD

BACKGROUND Young children with older siblings and those who attend day care are at increased risk for infections, which in turn may protect against the development of allergic diseases, including asthma. However, the results of studies examining the relation between exposure to other children and the subsequent development of asthma have been conflicting. METHODS In a study involving 1035 children followed since birth as part of the Tucson Childrens Respiratory Study, we determined the incidence of asthma (defined as at least one episode of asthma diagnosed by a physician when the child was 6 to 13 years old) and the prevalence of frequent wheezing (more than three wheezing episodes during the preceding year) in relation to the number of siblings at home and in relation to attendance at day care during infancy. RESULTS The presence of one or more older siblings at home protected against the development of asthma (adjusted relative risk for each additional older sibling, 0.8; 95 percent confidence interval, 0.7 to 1.0; P=0.04), as did attendance at day care during the first six months of life (adjusted relative risk, 0.4; 95 percent confidence interval, 0.2 to 1.0; P=0.04). Children with more exposure to other children at home or at day care were more likely to have frequent wheezing at the age of 2 years than children with little or no exposure (adjusted relative risk, 1.4; 95 percent confidence interval, 1.1 to 1.8; P=0.01) but were less likely to have frequent wheezing from the age of 6 (adjusted relative risk, 0.8; 95 percent confidence interval, 0.6 to 1.0; P=0.03) through the age of 13 (adjusted relative risk, 0.3; 95 percent confidence interval, 0.2 to 0.5; P<0.001). CONCLUSIONS Exposure of young children to older children at home or to other children at day care protects against the development of asthma and frequent wheezing later in childhood.

Evaluation of guided imagery as treatment for recurrent abdominal pain in children: a randomized controlled trial

BackgroundBecause of the paucity of effective evidence-based therapies for children with recurrent abdominal pain, we evaluated the therapeutic effect of guided imagery, a well-studied self-regulation technique.Methods22 children, aged 5 – 18 years, were randomized to learn either breathing exercises alone or guided imagery with progressive muscle relaxation. Both groups had 4-weekly sessions with a therapist. Children reported the numbers of days with pain, the pain intensity, and missed activities due to abdominal pain using a daily pain diary collected at baseline and during the intervention. Monthly phone calls to the children reported the number of days with pain and the number of days of missed activities experienced during the month of and month following the intervention. Children with ≤ 4 days of pain/month and no missed activities due to pain were defined as being healed. Depression, anxiety, and somatization were measured in both children and parents at baseline.ResultsAt baseline the children who received guided imagery had more days of pain during the preceding month (23 vs. 14 days, P = 0.04). There were no differences in the intensity of painful episodes or any baseline psychological factors between the two groups. Children who learned guided imagery with progressive muscle relaxation had significantly greater decrease in the number of days with pain than those learning breathing exercises alone after one (67% vs. 21%, P = 0.05), and two (82% vs. 45%, P < 0.01) months and significantly greater decrease in days with missed activities at one (85% vs. 15%, P = 0.02) and two (95% vs. 77%. P = 0.05) months. During the two months of follow-up, more children who had learned guided imagery met the threshold of ≤ 4 day of pain each month and no missed activities (RR = 7.3, 95%CI [1.1,48.6]) than children who learned only the breathing exercises.ConclusionThe therapeutic efficacy of guided imagery with progressive muscle relaxation found in this study is consistent with our present understanding of the pathophysiology of recurrent abdominal pain in children. Although unfamiliar to many pediatricians, guided imagery is a simple, noninvasive therapy with potential benefit for treating children with RAP.

A Pilot Study of the Use of Guided Imagery for the Treatment of Recurrent Abdominal Pain in Children

Few effective therapies are available for children with recurrent abdominal pain (RAP). Relaxation and guided imagery have been shown to impact the autonomic nervous system, which is altered in patients with functional gastrointestinal disorders. Ten children with RAP were enrolled in the study after evaluation by a pediatric gastroenterologist. They were trained in relaxation and guided imagery during 4 weekly 50-minute sessions. Pain diaries were completed at 0, 1, and 2 months. Children and parents also completed psychological questionnaires at enrollment. Although refractory to conventional treatment by their physician and pediatric gastroenterologist, the children experienced a 67% decrease in pain during the therapy (chi-square for trend, p<0.001). No baseline psychological characteristics impacted the response to therapy. The use of relaxation along with guided imagery is an effective and safe treatment for childhood RAP.

Is There a Common Cold Constitution

OBJECTIVE Constitutional factors might play a role in the susceptibility to clinical illness during the common cold. This study seeks to determine if the likelihood of developing frequent common colds persists during childhood. DESIGN The Tucson Childrens Respiratory Study involves 1246 children enrolled at birth and followed prospectively since 1980 and 1984. Parents reported the occurrence of frequent (> or =4) colds during the past year by questionnaire at 2, 3, 6, 8, 11, and 13 years of age. Blood for ex vivo interferon-gamma responses was obtained at 9 months and 11 years of age. RESULTS After adjustment for potential confounding variables, children with frequent colds at year 2 or 3 were twice as likely to experience frequent colds at year 6 (relative risk [RR], 2.8; 95% confidence interval [CI], 2.1-3.9), year 8 (RR, 2.6; 95% CI, 2.1-3.3), year 11 (RR, 2.4; 95% CI, 1.8-3.1), and year 13 (RR, 2.1; 95% CI, 1.4-3.3) compared with children who had infrequent colds at years 2 and 3. At 9 months of age, children who ultimately experienced persistent frequent colds had lower interferon-gamma titers than children without persistent frequent colds (3.05 +/- 1.61 vs 3.74 +/- 1.39, P =.016); this finding persisted at 11 years of age. CONCLUSION These data suggest the existence of a common cold constitution, whereby some children are more susceptible to infection and/or the expression of clinical symptoms when infected than are other children.

Clinic-based screening for domestic violence: use of a child safety questionnaire

BackgroundDomestic violence affects many women during their lifetime. Children living in homes where they are or have been exposed to violence are at increased risk for adverse outcomes. The American Academy of Pediatrics, the American Academy of Family Practice, and the American College of Obstetrics/Gynecology have recently joined in recommending routine screening of all families for the presence of domestic violence. We present our experience with an office-based domestic violence screening questionnaire.MethodsA series of four child safety questionnaires (designed for parents of infant, preschool-age, school-age, and adolescent patients), which included specific questions about domestic violence, was given to all mothers presenting to a university out-patient general pediatric clinic. The questionnaires, offered in both English and Spanish, were reviewed for the presence of domestic violence exposure, usually at the time of the clinic visit. The number of women who reported either current or past exposure to domestic violence as disclosed by this active screening process was compared to the number discovered prior to the use of these questionnaires.ResultsPrior to the use of active screening with a child safety questionnaire, five cases of domestic violence were identified in our clinic population of approximately 5000 children over a 3 month period. Active screening of this population with a parent questionnaire resulted in the identification of 69 cases of current domestic violence exposure (2% of those screened) during each of 2 years of screening. Use of the child safety questionnaire was associated with a significantly increased odds of detecting current domestic violence (OR = 3.6, 95% CI [1.4, 9.1], P = 0.007), with 72% [26–84%] of the cases identified being attributable to the use of the questionnaire. Of children screened, 2% were currently exposed to domestic violence, and 13% had been exposed to past domestic violence. Thus a total of 15% of our patient population has been exposed to domestic violence in their homes.ConclusionChildren in our clinic population are frequently exposed to domestic violence. Active screening for the presence of current or past domestic violence through the use of a parent questionnaire resulted in a significant increase in our ability to identify such families and provide appropriate referral information.

Cortisol Circadian Rhythms and Stress Responses in Infants at Risk of Allergic Disease

Altered hypothalamic-pituitary-adrenal function associated with allergic disease has generally been thought to be secondary to the stress of chronic disease. However, recent studies suggest that altered cortisol circadian rhythm and cortisol stress hyper-responsiveness precede the inception of allergic disease and are possible links between preventive factors associated with the hygiene hypothesis and the development of allergies. Elevated endogenous cortisol responses to stressful stimuli could predispose susceptible hosts to atopy and allergic disease by biasing the developing immune system to a T helper 2-predominant immune response, greater total and allergen-specific serum immunoglobulin E responses, and/or inhibition of peripheral immune tolerance. Because glucocorticoid receptors are present throughout the human body and many genes contain glucocorticoid response elements, variances in endogenous cortisol concentrations could have an impact on the phenotypic plasticity of a wide range of immunologically active genes during early human immune development. Here, recent findings related to hypothalamic-pituitary-adrenal function in infants predisposed to developing allergic disease are discussed along with speculation regarding the potential causal role of endogenous cortisol in the inception of allergic disease.

Office laboratory procedures, office economics, parenting and parent education, and urinary tract infection

We again review four areas of interest to office-based pediatricians: office laboratory procedures, office economics, parenting and patient education, and urinary tract infections. Sean Elliott provides an update on the Clinical Laboratories Improvement Amendments (CLIA) and their impact of office practice. Eve Shapiro reviews office economics, focusing on measuring quality of care, use of performance data, costs of new technologies, and the impact of managed care on the medical marketplace. John Walter offers an update on parenting and parent education, with approaches to counseling families about overuse of antibiotics, teen pregnancy, hyperactivity, violence, and asthma. Richard Wahl reviews the recent research on urinary tract infection, with special attention paid to office diagnosis and management, longitudinal studies of children with urinary tract infections, and the controversy surrounding the American Academy of Pediatrics Task Force on Circumcision report.

Toddler Documentation Gap

call tend to underestimate, not overestimate, the number of vaccines received by their child. Although documentation is acknowledged as a problem during immunization, few data are presently available which quantify its effect upon apparent vaccination levels. The aim of the present study was to assess the impact of documentation on the apparent level of immunization during a chart review in

Resident Continuity Clinic: A Modest Proposal

Resident continuity clinics are an integral and mandated component of the pediatric core curriculum. Hospital-based and community-based settings have been traditionally used, with varied success. This article proposes the use and testing of an additional site, the primary care clinic housed at the Childrens Clinic for Rehabilitative Services. This site provides concomitant continuity, and community and advocacy experiences for children with complex chronic conditions. Further study of the educational efficiency of this site is warranted.