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Survey of the extent and nature of care for adults and older adults by allergy/immunology practitioners.

BACKGROUND: The proportion of older adults in the US population will increase dramatically in the near future, yet the frequency and nature of care furnished to older adults by Allergy/Immunology practitioners has not been described. OBJECTIVE: To determine the extent and nature of care being provided to adults and older adults by Allergy/Immunology practitioners. METHODS: ACAAI members and fellows were surveyed to obtain information regarding certification and training as well as their practice patterns. RESULTS: The distribution of diagnoses among patients aged 40 to 54 years were very similar to distributions found among adults age 55 to 69 years and > or = 70 years of age. Virtually all respondents indicated they provide inhalant allergen immunotherapy for patients age 40 to 54 years with asthma and/or allergic rhinitis; administration of inhalant allergen immunotherapy for asthma and allergic rhinitis was also frequently reported for adults > or = 55 years. The proportions of respondents providing venom immunotherapy for adults aged 40 to 54, 55 to 69, and > or = 70 years were 82%, 70%, and 39%, respectively. CONCLUSION: ACAAI members and fellows commonly provide care to older adults. Our survey findings highlight the need to develop strategies for successful management of Allergy/Immunology conditions specifically pertaining to older adults, including studies to determine the therapeutic utility of inhalant allergen and venom immunotherapy in this age group.

Adult↗

Physician attitudes, opinions, and referral patterns: comparisons of those who have and have not taken an allergy/immunology rotation.

BACKGROUND: Interest in the field of allergy/immunology (A/I) is increasing, yet resident training programs are under pressure to shorten elective rotations such as A/I. It is unclear if there are differences between those who have and have not taken an A/I rotation. OBJECTIVE: To evaluate differences in the attitudes, opinions, and referral patterns between physicians who have and have not taken an A/I rotation. METHODS: An anonymous questionnaire was sent to 375 primary care physicians at one academic medical center. Subjects were separated into 5 cohorts based on specialty and level of training (internal medicine faculty, internal medicine resident, pediatric faculty, pediatric resident, and internal medicine-pediatric resident). RESULTS: Of the participants, 227 (61.0%) completed the survey. Compared with those who had not taken an A/I rotation, those who had taken an A/I rotation were more likely to feel they knew the types of cases seen by an allergist (75.9% vs 33.3%), to feel they knew an adequate amount about A/I (59.3% vs 19.5%), to feel they were exposed to an adequate amount of A/I during residency (64.8% vs 9.8%), to view immunotherapy as effective (70.0% vs 52.3%), and to have referred a patient to an allergist (77.8% vs 46.0%). CONCLUSIONS: There are significant differences in the attitudes, opinions, and referral patterns between physicians who have and have not taken an A/I rotation. Allergic diseases are increasing, yet residency training programs are under pressure to shorten rotations such as A/I to accommodate federally mandated work hour restrictions. The potential for inadequate care of allergic diseases may be an important issue if these trends continue.

Adult↗

Inpatient consultation of allergy/immunology in a tertiary care setting.

BACKGROUND: Few studies examine the referral patterns for allergy/immunology (A/I) inpatient consultation. OBJECTIVE: The purpose of this study was to examine the primary reason and trends for A/I inpatient consultation to improve fellowship training. METHODS: We performed a retrospective chart review of all inpatient A/I consults from July 1, 1987 to June 30, 2001 to determine the primary reason for consultation. We also reviewed trends in the total admissions and the average daily patient load compared with A/I consultation. RESULTS: A total of 1,284 A/I inpatient consults were reviewed. Thirty-six percent (460 of 1,284) of inpatient consults were for evaluation of adverse drug reactions, 21% (270 of 1,284) asthma, 21% (272 of 1,284) miscellaneous reasons, 8% (109 of 1,284) possible immunodeficiency, 7% (93 of 1,284) angioedema/urticaria, and 6% (80 of 1,284) anaphylaxis. Our results demonstrated a fall in inpatient consults that correlated with a similar fall in total hospital admissions. The ratio of A/I inpatient consults to total admissions remained constant. Additionally, the ratio of A/I consults to average daily patient load increased over the study period. There was a decrease in asthma and adverse drug reaction consults, whereas immunodeficiency and anaphylaxis referrals remained stable. CONCLUSIONS: Identifying the most common reasons for inpatient consultation provides a guide for the education of A/I fellows and primary care residents. Inpatient consultation continues to play a crucial role in A/I training as it provides unique opportunities to evaluate serious life threatening diseases. An unchanged trend of consultation for immunodeficiency and anaphylaxis reaffirms the importance of the allergist/immunologist as a valuable resource for inpatient consultation.

Adolescent↗

Demographics and long-term follow-up in a Veterans Affairs Allergy/Immunology Center: a 10-year analysis.

Between 1985 and 1992, patients were evaluated as new outpatient consultations in the Allergy/Immunology Center at the Veterans Affairs Greater Los Angeles Health Care System (VAGLAHS). Data collected included age, gender, ethnicity, and diagnosis. After 10 years, patient follow-up status was determined and classified into five categories: gender, ethnic distribution, age distribution, disorders seen, and follow-up pattern. A total of 1116 patients were evaluated. The gender of our population was 7.8% women and 92.2% men. The ethnic distribution was 59.5% white, 32.2% black, 6.5% Hispanic, and 1.9% other. Neither age nor ethnic distribution was significantly different from the general veterans affairs population. Age of patients ranged from 20 to 90 years old. The largest peak for age at initial presentation was 60 years. The three most common disorders seen in the clinic were rhinitis (36.6%), asthma (24.5%), and sinusitis (12.3%). The 10-year follow-up pattern of patients revealed that 6% were seen in the past year, 6.2% of patients were seen longer than 1 year ago but within the 5 past years, 29% of patients who were still seen at VAGLAHS but were no longer patients of the allergy clinic, 32.7% of patients who were no longer seen at VAGLAHS, and 26.2% died. Women and patients who were 50-60 years old were more likely to follow-up. There was no difference in follow-up visits among ethnic groups.

Adult↗

Relationship of basic military trainee emergency department visits for asthma and San Antonio air quality.

The U.S. Air Force conducts basic military training (BMT) in San Antonio, TX, an area with occasionally adverse air quality. Many individuals from the BMT population are evaluated for asthma symptoms. The relationship of air quality with these symptoms has not been studied in this population. This study examines the correlation of several air quality indicators in relation to emergency department (ED) visits for asthma from the BMT population. The variables studied were basic trainee ED visits for asthma, the 8-hour air quality index (AQI) for ozone, and the 24-hour AQI for particulate matter <2.5 microm for the San Antonio metropolitan area, daily pollen and fungal spore counts, and daily high temperature. The ED visits were obtained by retrospective review of medical records. Basic trainees reporting asthma symptoms often are referred to the allergy/immunology department for evaluation. The ED visits for only those patients who were later formally diagnosed with asthma were correlated also with the air quality indicators. Pearson correlation coefficients were calculated for all data pairs. There were 149 ED visits meeting inclusion criteria for the period of time studied (328 days). Forty-one percent of the basic trainees seen in the ED for asthma symptoms were later formally diagnosed with asthma in the allergy/immunology department. There was no significant correlation between basic trainee ED visits for asthma and the selected air quality indicators. Air quality does not significantly correlate with the occurrence of ED visits for asthma from the BMT population.

Air Pollutants↗

Potential adverse events with biologic response modifiers.

In recent years, an explosion of biologic response modifiers has entered the market to combat a variety of immune-mediated diseases. These can be in the form of recombinant cytokines, as in the case of interferon beta in the treatment of multiple sclerosis, or novel engineered antibodies constructed by combining non-human determinants with a human immunoglobulin scaffold, as in the case of omalizumab in the treatment of allergic asthma. More recently, completely human monoclonal antibodies have also been constructed. Adverse reactions related to these agents can be classified as expected or unexpected events. A number of case studies and a handful of randomized trials have demonstrated the potential toxicities with the use of biologic response modifiers. This article aims to review adverse event profiles of select biologic response modifiers for which the most data is available and are common to a rheumatology, allergy/immunology, and dermatology patient population.

Animals↗

Influence of age on the response to Streptococcus pneumoniae vaccine in patients with recurrent infections and normal immunoglobulin concentrations.

BACKGROUND: A deficient antibody response to polysaccharide antigens is determined by measuring the response to the 23-valent pneumococcal polysaccharide vaccine. However, the diagnosis of this specific antibody deficiency is hampered by the lack of sufficient data and standardized testing of the response to pneumococcal polysaccharides. METHODS: All patients evaluated in our allergy/immunology clinic for recurrent respiratory infections between 1995 and 1997 without immunoglobulin, IgG subclass, or other known primary or secondary immunodeficiency were included in this analysis. IgG antipneumococcal serotypes 1, 3, 4, 6B, 9V, 14, 18C, 19F, and 23F were determined by a modified ELISA protocol. An adequate IgG antibody response to an individual serotype was arbitrarily defined as a postimmunization antibody titer of 1.3 microg/ml or greater or at least four times the baseline value. RESULTS: A total of 113 patients fulfilling the criteria for inclusion in this analysis were divided into five age groups. The geometric means for preimmunization and postimmunization pneumococcal antibody titers for all serotypes increased with age. For post-immunization antibody concentrations, there was a sharp increase in the specific antibody concentrations in adults in comparison with all pediatric age groups ranging in age from 7 months to 16 years. Similarly, the number of serotypes to which there was an adequate response also increased with age. CONCLUSION: We conclude that the definition of what constitutes an adequate response to pneumococcal immunization needs further definition. It is clear, however, that age has an important influence on the intensity of the response to most pneumococcal polysaccharides. Correlation studies between antibody concentrations in different IgG subclasses, functional studies, and protection studies against mucosal and invasive pneumococcal infections are in progress, and these should contribute to a refined definition of a normal response. The availability of a standardized method for the measurement of IgG antibodies against relevant pneumococcal serotypes is an important step toward this goal.

Adolescent↗

Patient preferences for sensory attributes of intranasal corticosteroids and willingness to adhere to prescribed therapy for allergic rhinitis: a conjoint analysis.

BACKGROUND: Sensory attributes of intranasal corticosteroid (INS) products vary. OBJECTIVE: To evaluate patient preferences for INS sensory attributes and the degree to which attributes influence patients' willingness to adhere to therapy. METHODS: We conducted a cross-sectional study with 120 individuals across 4 US allergy/immunology clinics. Respondents chose between pairs of hypothetical INSs differing in sensory attribute composition. We measured the strength of preferences for 6 sensory attributes (smell, taste, aftertaste, throat rundown, nose runout, and feel of spray in nose or throat). Preferences were measured for 3 intensity levels of each sensory attribute (eg, no taste, weak taste, and strong taste). Other outcomes included an importance score for each sensory attribute and patients' willingness to adhere to therapy with an INS with the lowest intensity levels of each sensory attribute vs one with moderate intensity levels. RESULTS: Preferences decreased with increasing intensity levels of each sensory attribute. Aftertaste was the most important attribute in 28% of patients, taste in 19%, throat rundown in 18%, nose runout in 12%, smell in 11%, and feel of spray in 7%. If instructed to take an INS daily for 3 months, 77% of patients stated that they would definitely be able to follow their physician's advice (willingness to adhere) if given one containing the lowest level of each sensory attribute vs 4% if given one having moderate levels (P < .01). CONCLUSIONS: Patient preferences are inversely related to increasing intensity levels of sensory attributes and affect patients' willingness to adhere to therapy. Application of patient preferences when selecting INSs could improve adherence.

Administration, Intranasal↗

Distribution of primary immunodeficiency diseases diagnosed in a pediatric tertiary hospital.

BACKGROUND: Advances in immunologic techniques in recent years have led to increased recognition of primary immunodeficiency disorders, with IgA deficiency the most common phenotype reported by most registries. There have also been reports of increased associated incidence of autoimmunity, allergy, and other diseases. OBJECTIVES: We wished to determine the percentage of different primary immunodeficiency disorders seen in a pediatric tertiary hospital and to determine the association of primary immunodeficiency disorders with other diseases that are not part of classic immunodeficiency disorders. METHODS: We performed a retrospective review of the patients referred to our allergy/immunology clinic for immunologic evaluation of recurrent infections during an 8-year period. We also reviewed pathology reports with postmortem diagnosis of immunodeficiencies not identified while patients were alive. RESULTS: Of the 91 patients with primary immunodeficiency disorders evaluated, the majority had predominantly antibody deficiencies (67%). The most common phenotype was specific antibody deficiency with normal immunoglobulins (23.1%), defined as inability to mount an adequate response to pneumococcal polysaccharides followed by IgG2 subclass deficiency (17.6%). These two phenotypes were diagnosed mostly in the last 2 years of the survey. Associated diseases, found in 40% of patients, were mostly allergic conditions followed by syndromic/chromosomal disorders. CONCLUSION: The study reveals that specific antibody deficiency with normal immunoglobulins followed by IgG2 subclass deficiency was the most frequently diagnosed primary immunodeficiency disorder in our patient population. It also indicates that immunodeficiency disorders should be considered in patients with other abnormalities like allergic and syndromic/chromosomal disorders that present with recurrent infections.

Child↗

Asthma severity, atopic status, allergen exposure and quality of life in elderly persons.

BACKGROUND: Although asthma can be associated with significant airflow obstruction in those over the age of 65, it is often underdiagnosed and undertreated. OBJECTIVE: To describe severity of asthma, allergy skin test sensitivities, indoor allergen exposures, and the impact on quality of life (QOL) and health status in elderly persons with asthma. METHODS: A cross-sectional data analysis with 80 elderly persons with asthma recruited from medical, geriatric, and allergy/immunology tertiary care centers. Asthma severity was determined by symptoms and measurements of lung function. House dust specimens were collected from mattresses and bedroom carpets and analyzed separately for the major allergens of house dust, using monoclonal antibody-based immunoenzymetric assays. QOL was measured using Juniper's Asthma Quality of Life Questionnaire. Health status was measured using the Short Form Health Survey Medical Outcome Questionnaire which included Ferrans and Powers' Quality of Life Index subscales. RESULTS: Two-thirds of participants had either moderate or severe persistent asthma. Skin tests to a battery of common airborne allergens were positive to at least one allergen in 56 of the 75 participants tested (74.7%). Reservoir dust allergen levels were often high enough to place participants at risk of symptoms or at risk of developing sensitization. Increased asthma severity was associated with significantly lower QOL and a trend toward decreased health status. CONCLUSIONS: Asthma is a significant chronic problem in the elderly. Atopy was common. Asthma severity impacts on these participants' QOL and health status. Results support interventions aimed at identifying allergens precipitating attacks and reducing them in the home.

Aged↗

Is maternal age at delivery related to childhood food allergy?

The prevalence of food allergies is increasing. Concurrently, the average maternal age at birth is also increasing. We conducted a preliminary study to evaluate whether maternal age at the time of delivery is associated with a food allergy in children. Case and control patients were identified among consecutive patients seen by one of us (AD) in the Allergy/Immunology program at the Children's Hospital Boston between 11/1/98 and 2/28/00. Case patients were born in Massachusetts and had evidence of clinical sensitivity and IgE to one or more food allergens (n = 58). Control patients were those born in Massachusetts who had a negative skin test and/or RAST to inhalant and/or food allergens (n = 96). A second comparison group consisted of all live births in Massachusetts in 1999 (n = 80,866). Information on maternal age at birth was missing from 3/58 (5%) of patients with a food allergy and 4/96 (4%) of the control patients, so these patients were not included in the analysis. The proportion of children whose mother was aged 30 and over at their birth was significantly higher in children with a food allergy than control patients (78% vs. 55% p = 0.005) and higher than all births in Massachusetts (78% vs. 53% p = 0.0002). Mothers of children with a food allergy had about three times greater odds of being aged 30 or over at the time of delivery than mothers in either of the comparison groups. Further exploration of the data using logistic regression showed that maternal age over 30 at delivery and being first born were independent predictors of the child having a food allergy. In this study, the presence of a food allergy in children was related to older maternal age at delivery. Additional studies are needed to further evaluate this relationship and its potential implication in preventive strategies for food allergies in children.

Adult↗