The use of probiotics as a supplementary therapy in the treatment of patients with asthma: a pilot study and implications.

OBJECTIVES: Evaluate the use of probiotics as an additional therapy in the treatment of children and adolescents with asthma in Belo Horizonte, MG-Brazil. METHODS: A pilot longitudinal, experimental and nonrandomized study with 30 patients from six to 17 years old from Belo Horizonte. In the baseline appointment, all patients received beclomethasone, and one group also received a probiotic containing Lactobacillus reuteri (n=14). The patients were reassessed after at least 60 days with the Asthma Control Test, spirometry and self-report of the symptoms they experienced associated with asthma. RESULTS: A predominance of male patients (56.7%) and a mean age of 10.6 years were observed. The groups using probiotics did not differ in terms of sex, age or atopy. In the longitudinal evaluation, an increase in the Asthma Control Test scores and a reduction in the number of symptoms were observed in the probiotic group. There was an increase in the peak expiratory flow among those who used probiotics. CONCLUSIONS: This pilot study supports the hypothesis that the administration of probiotics as a supplementary therapy for the treatment of children and adolescents with asthma improves the clinical condition of the patients. Further studies are needed to confirm the efficacy of probiotics in asthma treatment.

The use of probiotics as a supplementary therapy in the treatment of patients with asthma: a pilot study and implications

OBJECTIVES: Evaluate the use of probiotics as an additional therapy in the treatment of children and adolescents with asthma in Belo Horizonte, MG-Brazil. METHODS: A pilot longitudinal, experimental and nonrandomized study with 30 patients from six to 17 years old from Belo Horizonte. In the baseline appointment, all patients received beclomethasone, and one group also received a probiotic containing Lactobacillus reuteri (n=14). The patients were reassessed after at least 60 days with the Asthma Control Test, spirometry and self-report of the symptoms they experienced associated with asthma. RESULTS: A predominance of male patients (56.7%) and a mean age of 10.6 years were observed. The groups using probiotics did not differ in terms of sex, age or atopy. In the longitudinal evaluation, an increase in the Asthma Control Test scores and a reduction in the number of symptoms were observed in the probiotic group. There was an increase in the peak expiratory flow among those who used probiotics. CONCLUSIONS: This pilot study supports the hypothesis that the administration of probiotics as a supplementary therapy for the treatment of children and adolescents with asthma improves the clinical condition of the patients. Further studies are needed to confirm the efficacy of probiotics in asthma treatment.

Echocardiographic Assessment of Ventricular Function in Young Patients with Asthma.

BACKGROUND: Despite significant advances in understanding the pathophysiology and management of asthma, some of systemic effects of asthma are still not well defined. OBJECTIVES: To compare heart function, baseline physical activity level, and functional exercise capacity in young patients with mild-to-moderate asthma and healthy controls. METHODS: Eighteen healthy (12.67 ± 0.39 years) and 20 asthmatics (12.0 ± 0.38 years) patients were enrolled in the study. Echocardiography parameters were evaluated using conventional and tissue Doppler imaging (TDI). RESULTS: Although pulmonary acceleration time (PAT) and pulmonary artery systolic pressure (PASP) were within normal limits, these parameters differed significantly between the control and asthmatic groups. PAT was lower (p < 0.0001) and PASP (p < 0.0002) was higher in the asthma group (114.3 ± 3.70 ms and 25.40 ± 0.54 mmHg) than the control group (135.30 ± 2.28 ms and 22.22 ± 0.40 mmHg). The asthmatic group had significantly lower early diastolic myocardial velocity (E', p = 0.0047) and lower E' to late (E'/A', p = 0.0017) (13.75 ± 0.53 cm/s and 1.70 ± 0.09, respectively) compared with control group (15.71 ± 0.34 cm/s and 2.12 ± 0.08, respectively) at tricuspid valve. In the lateral mitral valve tissue Doppler, the asthmatic group had lower E' compared with control group (p = 0.0466; 13.27 ± 0.43 cm/s and 14.32 ± 0.25 cm/s, respectively), but there was no statistic difference in the E'/A' ratio (p = 0.1161). Right isovolumetric relaxation time was higher (p = 0.0007) in asthmatic (57.15 ± 0.97 ms) than the control group (52.28 ± 0.87 ms), reflecting global myocardial dysfunction. The right and left myocardial performance indexes were significantly higher in the asthmatic (0.43 ± 0.01 and 0.37 ± 0.01, respectively) compared with control group (0.40 ± 0.01 and 0.34 ± 0.01, respectively) (p = 0.0383 and p = 0.0059, respectively). Physical activity level, and distance travelled on the six-minute walk test were similar in both groups. CONCLUSION: Changes in echocardiographic parameters, evaluated by conventional and TDI, were observed in mild-to-moderate asthma patients even with normal functional exercise capacity and baseline physical activity level. Our results suggest that the echocardiogram may be useful for the early detection and evoluation of asthma-induced cardiac changes.

Echocardiographic Assessment of Ventricular Function in Young Patients with Asthma / Avaliação Ecocardiográfica da Função Ventricular em Pacientes Jovens com Asma

Abstract Background: Despite significant advances in understanding the pathophysiology and management of asthma, some of systemic effects of asthma are still not well defined. Objectives: To compare heart function, baseline physical activity level, and functional exercise capacity in young patients with mild-to-moderate asthma and healthy controls. Methods: Eighteen healthy (12.67 ± 0.39 years) and 20 asthmatics (12.0 ± 0.38 years) patients were enrolled in the study. Echocardiography parameters were evaluated using conventional and tissue Doppler imaging (TDI). Results: Although pulmonary acceleration time (PAT) and pulmonary artery systolic pressure (PASP) were within normal limits, these parameters differed significantly between the control and asthmatic groups. PAT was lower (p < 0.0001) and PASP (p < 0.0002) was higher in the asthma group (114.3 ± 3.70 ms and 25.40 ± 0.54 mmHg) than the control group (135.30 ± 2.28 ms and 22.22 ± 0.40 mmHg). The asthmatic group had significantly lower early diastolic myocardial velocity (E', p = 0.0047) and lower E' to late (E'/A', p = 0.0017) (13.75 ± 0.53 cm/s and 1.70 ± 0.09, respectively) compared with control group (15.71 ± 0.34 cm/s and 2.12 ± 0.08, respectively) at tricuspid valve. In the lateral mitral valve tissue Doppler, the asthmatic group had lower E' compared with control group (p = 0.0466; 13.27 ± 0.43 cm/s and 14.32 ± 0.25 cm/s, respectively), but there was no statistic difference in the E'/A' ratio (p = 0.1161). Right isovolumetric relaxation time was higher (p = 0.0007) in asthmatic (57.15 ± 0.97 ms) than the control group (52.28 ± 0.87 ms), reflecting global myocardial dysfunction. The right and left myocardial performance indexes were significantly higher in the asthmatic (0.43 ± 0.01 and 0.37 ± 0.01, respectively) compared with control group (0.40 ± 0.01 and 0.34 ± 0.01, respectively) (p = 0.0383 and p = 0.0059, respectively). Physical activity level, and distance travelled on the six-minute walk test were similar in both groups. Conclusion: Changes in echocardiographic parameters, evaluated by conventional and TDI, were observed in mild-to-moderate asthma patients even with normal functional exercise capacity and baseline physical activity level. Our results suggest that the echocardiogram may be useful for the early detection and evoluation of asthma-induced cardiac changes.

Resumo Fundamento: Apesar de avanços significativos no entendimento da fisiopatologia e manejo da asma, alguns efeitos sistêmicos da asma ainda não são bem definidos. Objetivos: Comparar a função cardíaca, o nível de atividade física basal, e a capacidade funcional de pacientes jovens com asma leve a moderada com controles saudáveis. Métodos: Dezoito voluntários saudáveis (12,67 ± 0,39 anos) e 20 pacientes asmáticos (12,0 ± 0,38 anos) foram incluídos no estudo. Os parâmetros de ecocardiografia foram avaliados pelo exame de ecocardiogragia com Doppler convencional e tecidual (EDT). Resultados: Apesar de o tempo de aceleração pulmonar (TAP) e da pressão arterial sistólica pulmonar (PASP) encontrarem-se dentro da faixa de normalidade, esses parâmetros foram significativamente diferentes entre o grupo controle e o grupo asmático. O TAP foi menor (p < 0,0001) e a PASP maior (p < 0,0002) no grupo de indivíduos asmáticos (114,3 ± 3,70 ms e 25,40 ± 0,54 mmHg) que o grupo controle (135,30 ± 2,28 ms e 22,22 ± 0,40 mmHg). O grupo asmático apresentou velocidade diastólica inicial do miocárdio (E', p = 0,0047) e relação entre E' e velocidade tardia mais baixas (E'/A', p = 0,0017) (13,75 ± 0,53 cm/s e 1,70 ± 0,09, respectivamente) em comparação ao grupo controle (15,71 ± 0,34 cm/s e 2,12 ± 0,08, respectivamente) na valva tricúspide. No exame Doppler tecidual do anel mitral lateral, o grupo asmático apresentou menor E' em comparação ao grupo controle (p = 0,0466; 13,27 ± 0,43 cm/s e 14,32 ± 0,25 cm/s, respectivamente), mas não houve diferença estatística na razão E'/A' (p = 0,1161). O tempo de relaxamento isovolumétrico foi maior no grupo de pacientes asmáticos (57,15 ± 0,97 ms) que no grupo controle (52,28 ± 0,87 ms) (p = 0,0007), refletindo uma disfunção global do miocárdio. O índice de performance miocárdica direito e esquerdo foi significativamente maior no grupo asmático (0,43 ± 0,01 e 0,37 ± 0,01, respectivamente) que no grupo controle (0,40 ± 0,01 e 0,34 ± 0,01, respectivamente) (p = 0,0383 e p = 0,0059 respectivamente). O nível de atividade física e a distância percorrida no teste de caminhada de seis minutos foram similares entre os grupos. Conclusão: Mudanças nos parâmetros ecocardiográficos, avaliados pela ecocardiografia convencional e pela EDT foram observadas em pacientes com asma moderada a grave com capacidade funcional e nível de atividade física basal normais. Nossos resultados sugerem que o ecocardiograma pode ser útil para a detecção precoce e a evolução de alterações cardíacas induzidas pela asma. (Arq Bras Cardiol. 2018; 110(3):231-239)

Vascular function in asthmatic children and adolescents.

BACKGROUND: Epidemiological studies have demonstrated an increased incidence of cardiovascular events in patients with bronchial asthma, but little is known about the relationship between asthma and vascular function. The purpose of this study was to evaluate endothelial function and arterial stiffness in children and adolescents with asthma. METHODS: A cross-sectional controlled study was designed. Measurements of endothelial function and arterial stiffness in asthmatic (13.6 ± 0.6 years) and control groups (14.9 ± 0.7 years) were taken by the non-invasive peripheral arterial tonometry (EndoPAT2000) determined by using the natural logarithm of the reactive hyperemia index (LnRHI) and the augmentation index (AIx@75%), respectively. Patients with asthma were also administered two questionnaires to evaluate asthma control and quality of life. Exercise functional capacity was evaluated using the Shuttle Walking Test (SWT). Only male participants were included in the present study. RESULTS: LnRHI and the walked distance during the SWT were similar between groups (p = 0.23 and p = 0.50, respectively). AIx@75% was significantly higher in the asthmatic group (-7.75 ± 1.7) compared to the control group (-15.25 ± 1.8), p < 0.04. In the control group, the LnRHI correlated positively with baseline systolic blood pressure (r = 0.53, p = 0.02) and mean arterial pressure (r = 0.50, p = 0.03), age (r = 0.61, p = 0.007), weight (r = 0.63, p = 0.004) and height (r = 0.56, p = 0.015). Besides that LnRHI correlated with FVC (r = 0.69, p = 0.002), FEV1, (r = 0.53, p = 0.03) and negatively with Tiffeneau index (FEV1/FVC%, r = -0.49 p = 0.04). The LnRHI of the asthmatic group did not correlate with the different variables evaluated. CONCLUSION: The increased AIx@75% without changes in LnRHI in asthmatic patients could mean that an early detection of vascular impairment may precede endothelial dysfunction, and that different mechanisms may contribute to the pathogenesis and progression of cardiovascular events in this population. A large prospective and randomized controlled study should be done to evaluate the physiopathological mechanisms underlying the association between arterial stiffness and asthma.

Methods of assessing adherence to inhaled corticosteroid therapy in children and adolescents: adherence rates and their implications for clinical practice.

Nonadherence to inhaled corticosteroid therapy is common and has a negative effect on clinical control, as well as increasing morbidity rates, mortality rates and health care costs. This review was conducted using direct searches, together with the following sources: Medline; HighWire; and the Latin American and Caribbean Health Sciences Literature database. Searches included articles published between 1992 and 2008. The following methods of assessing adherence, listed in ascending order by degree of objectivity, were identified: patient or family reports; clinical judgment; weighing/dispensing of medication, electronic medication monitoring; and (rarely) biochemical analysis. Adherence rates ranged from 30 to 70%. It is recognized that the degree of adherence determined by patient/family reports or by clinical judgment is exaggerated in comparison with that obtained using electronic medication monitors. Physicians should bear in mind that true adherence rates are lower than those reported by patients, and this should be considered in cases of poor clinical control. Weighing the spray quantifies the medication and infers adherence. However, there can be deliberate emptying of inhalers and medication sharing. Pharmacies provide the dates on which the medication was dispensed and refilled. This strategy is valid and should be used in Brazil. The use of electronic medication monitors, which provide the date and time of each triggering of the medication device, although costly, is the most accurate method of assessing adherence. The results obtained with such monitors demonstrate that adherence was lower than expected. Physicians should improve their knowledge on patient adherence and use accurate methods of assessing such adherence.

Métodos empregados na verificação da adesão à corticoterapia inalatória em crianças e adolescentes: taxas encontradas e suas implicações para a prática clínica: [revisão] / Methods of assessing adherence to inhaled corticosteroid therapy in children and adolescents: adherence rates and their implications for clinical practice: [review]

Adesão inadequada à corticoterapia inalatória é comum e contribui para um controle clínico insatisfatório, aumento da morbidade, mortalidade e dos custos do setor. Este artigo de revisão foi conduzido utilizando-se bancos de dados Medline, HighWire, Literatura Latino-Americana e do Caribe em Ciências da Saúde e pesquisa direta, entre 1992 e 2008. Os métodos para avaliar a adesão, citados em ordem crescente de sua objetividade, são: relato do paciente ou seus familiares, julgamento clínico, pesagem da medicação, dispensação de medicação, dosadores eletrônicos e análise bioquímica (pouco utilizada). As taxas de adesão variaram de 30 a 70 por cento. A adesão determinada pelo relato do paciente/familiares e julgamento clínico é reconhecidamente exagerada quando comparada à obtida através do dosador eletrônico. O clínico deve sempre lembrar que as taxas reais de adesão são menores do que as relatadas pelo paciente e isso deve ser considerado, se não houver bom controle da doença. A pesagem do spray quantifica a medicação e infere adesão, porém pode ocorrer esvaziamento deliberado e compartilhamento da medicação. A farmácia fornece datas de dispensação e recarga da medicação. Esta estratégia é válida e deveria ser utilizada em nosso meio. O uso de dosador eletrônico é o método mais acurado para avaliar adesão, ele fornece a data e horário de cada disparo na utilização da medicação, porém é oneroso. Os resultados obtidos com dosadores demonstraram que a adesão foi menor que a esperada. Melhorar o conhecimento do médico sobre a adesão do seu paciente e utilizar métodos acurados para acessá-la é um caminho a seguir.

Nonadherence to inhaled corticosteroid therapy is common and has a negative effect on clinical control, as well as increasing morbidity rates, mortality rates and health care costs. This review was conducted using direct searches, together with the following sources: Medline; HighWire; and the Latin American and Caribbean Health Sciences Literature database. Searches included articles published between 1992 and 2008. The following methods of assessing adherence, listed in ascending order by degree of objectivity, were identified: patient or family reports; clinical judgment; weighing/dispensing of medication, electronic medication monitoring; and (rarely) biochemical analysis. Adherence rates ranged from 30 to 70 percent. It is recognized that the degree of adherence determined by patient/family reports or by clinical judgment is exaggerated in comparison with that obtained using electronic medication monitors. Physicians should bear in mind that true adherence rates are lower than those reported by patients, and this should be considered in cases of poor clinical control. Weighing the spray quantifies the medication and infers adherence. However, there can be deliberate emptying of inhalers and medication sharing. Pharmacies provide the dates on which the medication was dispensed and refilled. This strategy is valid and should be used in Brazil. The use of electronic medication monitors, which provide the date and time of each triggering of the medication device, although costly, is the most accurate method of assessing adherence. The results obtained with such monitors demonstrate that adherence was lower than expected. Physicians should improve their knowledge on patient adherence and use accurate methods of assessing such adherence.

Adesão às medidas de controle ambiental em lares de crianças e adolescentes asmáticos / Compliance with environmental control measures in the homes of children and adolescents with asthma

OBJETIVO: Verificar a adesão às medidas de controle ambiental em lares de crianças asmáticas, através de visitas domiciliares. MÉTODOS: Visitas domiciliares, com observação direta e preenchimento de questionário, foram feitas em 98 lares de crianças e adolescentes asmáticos de quatro a quinze anos, antes e após 90 dias de medidas de controle ambiental serem preconizadas. Foi perguntado aos pais o porquê de não se fazer o controle ambiental. Para a análise estatística foi usado o teste de McNemar. RESULTADOS: O acréscimo na adesão aos diferentes itens pesquisados foi de 11,1 por cento, com variação de -4,1 por cento, para retirada de cortinas (p = 0,63) a +22,6 por cento, para retirada de brinquedos de pelúcia (p < 0,01). A presença de fumantes passivos foi reduzida em 9,7 por cento (p = 0,02). A população estudada tinha renda média mensal de 2,5 salários mínimos. Quando perguntado o porquê de não se adotarem as medidas recomendadas, os motivos principais alegados foram: "falta de dinheiro" (60,1 por cento), "achou difícil de realizar" (6,1 por cento), "não dependia só dela" (4,0 por cento) e "falta de tempo da mãe" (4 por cento). CONCLUSÃO: O controle ambiental nem sempre é realizado e pode ser influenciado por fatores socioeconômicos e culturais.

OBJECTIVE: To determine, through home visits, the rate of compliance with environmental control measures in the homes of children with asthma. METHODS: This study involved 98 asthma patients between the ages of 4 and 15. The parents of those children and adolescents received instruction in how to carry out environmental control measures and were encouraged to perform such measures continuously for a period of 90 days. Home visits, which included direct inspection of the domicile and administration of a questionnaire, were made before and after this 90-day period. In cases of noncompliance, parents were asked to explain why they did not carry out the control measures. Statistical analysis was performed using the McNemar test. RESULTS: Overall compliance with the various items studied was 11.1 percent, ranging from -4.1 percent (for curtain control, p = 0.63) to 22.6 percent (for stuffed toys, p < 0.001). Passive smoking was reduced to 9.7 percent (p = 0.02). Among the families studied, the mean monthly income was 2.5 times the national minimum wage. When asked why they had not adopted the recommended measures, noncompliant parents gave, among others, the following explanations: "economic hardship" (60.1 percent); "the measures were too difficult to carry out" (6.1 percent); "nonparticipation of the father" (4 percent); and "lack of time on the part of the mother" (4 percent). CONCLUSION: Environmental control measures were carried out sporadically, possibly reflecting the influence of socioeconomic and cultural factors.

Compliance with environmental control measures in the homes of children and adolescents with asthma.

OBJECTIVE: To determine, through home visits, the rate of compliance with environmental control measures in the homes of children with asthma. METHODS: This study involved 98 asthma patients between the ages of 4 and 15. The parents of those children and adolescents received instruction in how to carry out environmental control measures and were encouraged to perform such measures continuously for a period of 90 days. Home visits, which included direct inspection of the domicile and administration of a questionnaire, were made before and after this 90-day period. In cases of noncompliance, parents were asked to explain why they did not carry out the control measures. Statistical analysis was performed using the McNemar test. RESULTS: Overall compliance with the various items studied was 11.1%, ranging from -4.1% (for curtain control, p = 0.63) to 22.6% (for stuffed toys, p < 0.001). Passive smoking was reduced to 9.7% (p = 0.02). Among the families studied, the mean monthly income was 2.5 times the national minimum wage. When asked why they had not adopted the recommended measures, noncompliant parents gave, among others, the following explanations: "economic hardship" (60.1%); "the measures were too difficult to carry out" (6.1%); "nonparticipation of the father" (4%); and "lack of time on the part of the mother" (4%). CONCLUSION: Environmental control measures were carried out sporadically, possibly reflecting the influence of socioeconomic and cultural factors.

Perfil da assistência pública à criança e ao adolescente asmáticos / A profile of public healh care to the asthmatic child and adolescent

Este trabalho objetivou traçar um perfil da assistência oferecida a um grupo de pacientes asmáticos do Sistema Único de Saúde (SUS). Foram estudados, em delineamento descritivo, 178 pacientes referenciados ao ambulatório de Pneumologia Pediátrica Campos Sales, da Secretaria Municipal de Saúde de Belo Horizonte, entre agosto de 1994 a abril de 1995. A morbidade foi elevada. 75,8% apresentavam crises uma a duas vezes por mês; em 80,9%, o período intercrítico era sintomático. No decurso de sua moléstia, 64,0% já haviam sido hospitalizados. A despeito dessa gravidade, 100,0% deles não faziam tratamento profilático inalatório, 94,9% dos responsáveis não apresentavam conhecimentos mínimos sobre o controle da asma e 89,9% freqüentavam regularmente os serviços de urgência. Conclui-se que a assistência pública desses pacientes encontrava-se mal direcionada, os recursos mal alocados, sem planejamento em profilaxia, com enfoque do tratamento somente do episódio agudo, resultando em uma assistência ineficaz e de elevado custo social.

This paper aims towards drawing a profile of the public health care offered to a group of SUS (Unified Health System) asthmatic patients. Through descriptive statistics, 178 patients referred to the Campos Sales Pediatric Pneumology Outpatient Clinic from the Belo Horizonte Municipal Health Service were studied, between August 1994 and April 1995. A high morbity rate was found: 75,8% had crises once to twice a month, in 80,9% the intercritical period was symptomatic. Throughout the illness, 64,0% had been hospitalized. In spite of the severity observed, 100,0% of the patients were not in inalatory prophylactic treatment, 94,9% of the guardians did not have minimal knowledge on asthma control and 89,9% regularly attended emergency services. In conclusion, the public health care offered to these patients was found to be poorly directed, with misplaced resources, absence of preventive planning, and treatment emphasis on acute episodes, resulting in an ineffective and high social cost health care.