Orientadores: Ilma Aparecida Paschoal, Tânia Aparecida Marchiori de Oliveira Cardoso / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas / Made available in DSpace on 2018-08-24T12:02:06Z (GMT). No. of bitstreams: 1 Almeida_SaraReginaMeira_D.pdf: 2401063 bytes, checksum: a7a8eb9cf2ab80608292d29f539ef0ed (MD5) Previous issue date: 2014 / Resumo: Em escala mundial, o acidente vascular cerebral (AVC) é a segunda principal causa de morte. Além de ser importante causa de morte, muitos pacientes com AVC ficam incapacitados e necessitam de ajuda na vida cotidiana. Apesar de importante, é escasso o estudo quanto às complicações respiratórias que os pacientes hemiplégicos crônicos podem desenvolver. A disfunção respiratória é uma manifestação precoce e importante para mensurar a gravidade da doença neurológica. Outro aspecto importante é a ocorrência da apneia obstrutiva do sono (AOS), que chega a acometer 30-70% dos pacientes com AVC. Visto isso, o objetivo geral da pesquisa é avaliar a presença de disfunção respiratória na vigília e rastrear a presença AOS, em pacientes com comprometimento motor pós-AVCi instalado. Além de, avaliar a função pulmonar de cada paciente, em relação às variáveis respiratórias; analisar o padrão respiratório através da capnografia volumétrica; avaliar nos pacientes com AVCi, a associação da incapacidade física e dos parâmetros relacionados ao sono com os exames de imagem. Tratou-se de estudo transversal com 29 pacientes com AVCi. Foram incluídos pacientes com diagnóstico clínico e por imagem de AVCi, avaliados entre o terceiro e quarto mês pós-icto, apresentando déficit motor do tipo hemiplegia ou hemiparesia, com assistência médica regular, no Hospital de Clínicas da UNICAMP. Como instrumentos de avaliação foram utilizados parâmetros quantitativos e qualitativos da parte respiratória, neurológica e do sono. Foram utilizados os testes não paramétricos Mann-Whitney e Exato de Fisher para avaliar a relação entre as variáveis. Coeficiente de Spearman para avaliar as correlações e Regressão linear múltipla para identificar as variáveis relacionadas aos parâmetros respiratórios. O grupo com comprometimento da força muscular respiratória, da função pulmonar e da tosse (mensurados por pressão expiratória máxima, espirometria, pico de fluxo de tosse) apresentaram grau de comprometimento neurológico e incapacidade física maior que o grupo sem déficit respiratório. O padrão respiratório no grupo de pacientes foi alterado (mensurado pela capnografia volumétrica). Houve associação estatisticamente significante entre lesão capsular e comprometimento motor (avaliado pela escala de Rankin e Barthel) e pior qualidade do sono (avaliado pelo índice de Pittsburgh). Concluiu-se que pacientes com AVCi apresentaram alteração da função respiratória com comprometimento da força muscular, da função pulmonar, do volume de CO2 expirado e da eficácia da tosse. A média do índice de apneia-hipopneia (IAH) dos pacientes avaliados pela polissonografia portátil foi de 15,6 eventos/hora, e em 76% da amostra houve aumento do IAH, de graus variando de leve a acentuado. Os pacientes com AVCi e com envolvimento capsular, tiveram comprometimento da função motora e grau de incapacidade física maior e qualidade do sono pior que o grupo sem envolvimento capsular / Abstract: In a worldwide scale, stroke is the second main cause of death. In addition, many stroke patients become disabled and need help in their everyday lives. Although it is a frequent disease, studies about the respiratory complications that chronic hemiplegic patients can develop are not available. Respiratory dysfunction is an early manifestation of neurological disease and very important to measure the severity of the disease. Another important aspect is the occurrence of obstructive sleep apnea (OSA), which can affect from 30 to 70% of stroke patients. In this scenario, the general objective of this research is to evaluate the presence of respiratory dysfunction in wakefulness and trace the presence of OSA, particularly in patients with motor commitment after ischemic stroke, and compare them with the control group. Besides evaluating the pulmonary function in each patient, in relation to the respiratory variables, also analyze the respiratory pattern through volumetric capnography, evaluate the association of physical disability and the parameters related to sleep in the patients, through the use of the image examining. It was a cross sectional study patients with 29 patients with ischemic. Patients with a clinical and image diagnosis of ischemic stroke were included, evaluated between the third and fourth month after the ictus, presenting a motor deficit either hemiplegia or hemiparesis, with regular medical assistance at the Hospital of University of Campinas (UNICAMP). As instruments of evaluation quantitative and qualitative parameters were used, about the respiratory, neurological and sleep aspects. It were used Mann-Whitney and Fisher exact test for evaluate the relation between variable. Spearman correlation was used to evaluate the correlations and multiple linear regression was used to identify the variable related to respiratory parameters. The group with impairment of respiratory muscle strength, of the pulmonary function and cough (evaluated by maximal expiratory pressure, spirometry and cough peak flow) presented a higher degree of neurological disability and physical disability than the group without respiratory deficit. The respiratory pattern of the group of patients was altered (evaluated by volumetric capnography). There was an association with statistical significance between capsular lesion and motor impairment (as evaluated by Rankin and Barthel Indexes) and worse conditions of sleep (evaluated by Pittsburgh Index). The conclusion was that patients with ischemic stroke presented alteration of the function respiratory with impairment of muscle strength, of pulmonary function, of volume of CO2 expired and of the efficiency of cough. The mean of apnea and hypopnea index (AHI) of the patients assessed by portable polysomnography was 15.6 events / hour, and 76% of the sample had increased rates of AHI, in varying degrees from mild to severe. The patients with ischemic stroke and with capsular involvement had greater deficit of the motor function and greater degree of physical disability and a worse quality of sleep than the group without capsular involvement / Doutorado / Ciencias Biomedicas / Doutora em Ciências Médicas

Background: Assessment of platelet vitality is important for patients presenting with inherited or acquired disorders of platelet function and for quality assessment of platelet concentrates. Methods: Herein we combined live stains with intra-vital confocal fluorescence microscopy in order to obtain an imaging method that allows fast and accurate assessment of platelet vitality. Three fluorescent dyes, FITC-coupled wheat germ agglutinin (WGA), tetramethylrhodamine methyl ester perchlorate (TMRM) and acetoxymethylester (Rhod-2), were used to assess platelet morphology, mitochondrial activity and intra-platelet calcium levels. Microscopy was performed with a microlens-enhanced Nipkow spinning disk-based system allowing live confocal imaging. Results: Comparison of ten samples of donor platelets collected before apheresis and platelets collected on days 5 and 7 of storage showed an increase in the percentage of Rhod-2positive platelets from 3.6 to 47 and finally to 71%. Mitochondrial potential was demonstrated in 95.4% of donor platelets and in 92.5% of platelets stored for 7 days. Conclusion: Such fast and accurate visualization of known key parameters of platelet function could be of relevance for studies addressing the quality of platelets after storage and additional manipulation, such as pathogen inactivation, as well as for the analysis of inherited platelet function disorders. / Hintergrund: Die Vitalitätsbestimmung von Blutplättchen ist sowohl für die Analyse angeborener Plättchendefekte als auch für die Qualitätsbestimmung von Plättchenkonzentraten von zentraler Bedeutung. Methoden: In der vorliegenden Arbeit stellen wir eine Methode vor, die mittels einer Kombination von Vitalfarbstoffen und konfokaler «Real time»-Mikroskopie neue Einblicke in die Vitalitätsbestimmung lebender Plättchen ermöglicht. Mittels der Zugabe von FITC-gekoppeltem Weizenkeimlektin (WGA), Tetramethylrhodamin-Methylesterperchlorat (TMRM) und Acetoxymethylester (Rhod-2) wurde bei lebenden Blutplättchen deren Morphologie, mitochondriale Aktivität und Veränderungen im Calcium-Haushalt im Rahmen der Lagerung analysiert. Für die Mikroskopie wurde ein Nipkow-System gewählt, das eine konfokale Mikroskopie lebender Zellen ermöglicht. Ergebnisse: Der Vergleich von 10 humanen Blutplättchenproben zu Beginn bzw. nach 5 und 7 Tagen Lagerung zeigte einen Anstieg der Rhod-2-positiven Plättchen von 3,6 über 47 auf 71%. Die Anzahl der Blutplättchen mit TMRM-positiven Mitochondrien hingegen lag vor der Lagerung bei 95,4% und nach den 7 Tagen Lagerung bei 92,5%. Schlussfolgerung: Die hier vorgestellte Methodik der Bildgebung zur Bestimmung vitaler Parameter von Blutplättchen eignet sich als ergänzende Analysemodalität für eine bessere Bestimmung der Blutplättchenqualität. / Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.

Title: Power output and selected cardiorespiratory parameters in elite athletes during the third to fourth week after COVID-19 infection Objectives: The aim of this thesis is to compare power output and selected cardiorespiratory parameters in elite athletes before and three to four weeks after COVID- 19 infection. Since the elite athletes undergo these health checks on a yearly basis, it is possible to compare the data before and immediately after the infection without difficulty. Methods: This thesis has a character of a quantitative research based on testing the outcomes with confirming or denying hypotheses. Out of the total of 64 elite athletes with the CPET data after the infection 17 athletes, fulfilling other criteria, were selected. I was provided with the data by Centrum sportovní medicíny z. s.. These values became the foundation for statistical hypotheses testing. Analysis of the data was done by means of a pair t-test in R software. Results: There were no significant differences in the majority of the spirometry parameters. Only the inspiration vital capacity was significantly higher (p = 0,004) after the COVID-19 infection in 14 athletes with 0,21±0,18 l improvement. There were significant differences in five of CPET parameters. Load in RCP was significantly lower (p = 0,011) in 13...

This diploma thesis deals with home parenteral nutrition in the day and night regime and its effect on patients. Parenteral nutrition is usually administered at night so that patients can do normal daily activities and so that nutrition administered in this way has the least impact on their lives. Parenteral nutrition is not a physiological route of nutrient administration and it is not natural for the human body to process nutrients at night. The first part of the theoretical work presents parenteral nutrition and its composition, indications, contraindications and complications. The next part of the thesis describes home parenteral nutrition and its organisation which is necessary for this form of nutritional support to be implemented. It is necessary to monitor many laboratory values on parenteral nutrition, the theoretical part specifically mentions cholesterol, triacylglycerols, glycemia or liver function tests. One of the important parts is the chapter about circadian rhythms, hormones and metabolic changes in energy intake at night. Qualitative research was chosen for this work, which involved 17 patients on home parenteral nutrition. These patients were getting their nutrition during the night. Their laboratory values such as liver function tests, glycaemia and blood fats was evaluated and...

Spirometry is the most important tool in diagnosing pulmonary disease and is the most frequently performed pulmonary function test. Respiratory disease is also one of the greatest causes for morbidity and mortality on the Hopi Nation, but no specific reference equations exist for this unique population. The purpose of this study was to determine if population reference equations were necessary for these children and, if needed, to create new age and race-specific pulmonary nomograms for Hopi children. Two hundred and ninety-two healthy children, ages 4-13 years, attending Hopi Nation elementary schools in Arizona, were asked to perform spirometry for a full battery of pulmonary volumes and capacities of which the following were analyzed: forced vital capacity (FVC), forced expiratory volume in 1 sec (FEV1), FEV1 % (FEV1/FVC), FEF25-75% and peak expiratory flow rate (PEFR). Spirometric data from Navajo children living in the same geographical region as the Hopi children were compared as well as spirometric data from common reference values used for other ethnic groups in the USA. Spirometry tests from 165 girls and 127 boys met American Thoracic Society quality control standards. We found that the natural log of height, body mass and age were significant predictors of FEV1, FVC, and FEF25-75% in the gender-specific models and that lung function values all increased with height and age as expected. The predictions using the equations derived for Navajo, Caucasian, Mexican-American, African-American youth were significantly different (P ≤ 0.05) from the predictions derived from the Hopi equations for all of the variables across both genders, with the exceptions of Hopi versus Navajo FEV1/FVC in the males and Hopi versus Caucasians FEF25-75% in the females. Thus it would appear for this population important to have specific formulae to provide more accurate reference values.

Spirometry is the most important tool in diagnosing pulmonary disease and is the most frequently performed pulmonary function test. Since respiratory disease is the single greatest cause for morbidity and mortality on the Navajo Nation, the purpose of this study was to create newage and race-specific pulmonary nomograms for Navajo children. Five hundred fifty-eight healthy children, ages 6-14 years, attending Navajo Nation elementary schools in Arizona, were asked to perform spirometry to develop population-specific and tribe-specific nomograms for forced vitalcapacity (FVC), forced expiratory volume in 1 sec (FEV1), and FEV1 Ratio (FEV1/FVC). Spirometry tests from 284 girls and 274 boys met American Thoracic Society quality control standards. Lung function values, except for FEV1/FVC, all increased with height. The lower limit of the normal range for FEV1/FVC was 80%. The spirometry reference equations from the healthyboys and girls were developed. Height and the natural log of height were significant predictors of FEV1, FVC, and FEF25-75% in the gender-specific models. The resulting population-specific spirometry reference equations should be used when testing Navajo children ages 6-14 years. However, the use of the NHANES III spirometry reference equations for Caucasian children may not result in significant misclassification in clinical settings providing that a maximal effort is given by the Navajo child being tested.

The relationship between the PQ-segment slope on ST-segment depression during vigorous exercise was examined in 26 apparently healthy females between 18 and 26 years of age. Each subject performed 2 submaximal cycle ergometer exercise tolerance tests (trial A and trial B) on nonconsecutive days wherein the following variables, as delta scores, were measured; P-wave amplitude (microvolts), PQ-segment slope (uV!sec), and J-point at 0 and 60 msec (uV). Each variable was measured by both visual and computer averaging. The degree of reproducibility within and between trials differed for the visual and computer averaged measures. Generally higher reproducibility was found with computer averaging particularly within trial B (r =0.63-0.89, p<O.OI). Trial b served as a basis for assessment of PQ-segment slope effect on ST segment response. Computer analysis of frequency distribution for responses revealed a greater frequency of downsloping PQ-segment with clinically significant ST-segment depression (>50 uV) at both 0 and 60 msec after the J-point in lead II. However, there was a greater percentage (91%) of flat PQ-segment slopes with clinically significant ST-segment depression at J-point 0 msec in lead V5. These findings suggest possible influence of lead selection on the measurements of the PQ-segment slope and ST-segment. Implication of clinical application would be to use lead VS for diagnosing CHD and by measuring ST-segment depression at J-point 60 msec. However when screening exercise ECG tests in apparently healthy women use J-point at 0 msec. / Master of Science

<p>Astma i hronična opstruktivna bolest pluća (HOBP) su najče&scaron;će hronične nezarazne bolesti respiratornog sistema i predstavljaju značajan zdravstveni problem. U dijagnostici i proceni stepena poremećaja disajne funkcije u ovih bolesnika najče&scaron;će se koriste spirometrija i telesna pletizmografija. Impulsna oscilometrija predstavlja novu metodu u dijagnostici poremećaja plućne funkcije. Ova metoda je jednostavna za izvođenje i minimalno zavisi od saradnje pacijenta.Osnovni cilj ove doktorske disertacije bio je da se uporede parametri dobijeni impulsnom oscilometrijom, spirometrijom i telesnom pletizmografijom kod pacijenata sa astmom i hroničnom opstruktivnom bolesti pluća, utvrdi senzitivnost navednih metoda u detekciji opstruktivnog poremećaja ventilacije kao i povezanost parametara impulsne oscilometrije, spirometrije i telesne pletizmografije i stepena težine dispnoičnih tegoba kod odraslih pacijenata sa astmom i HOBP. Korelacijom parametara dobijenih impulsnom oscilometrijom i spirometrijom dobijena je umerena negativna korelacija vrednosti R5 sa FEV1 kod pacijenata sa astmom (r= -0.47, r&lt;0.001) i HOBP (r= -0.50, r&lt;0.001), kao i umerena pozitivna korelacija X5 sa FEV1 (r= 0.54, r&lt;0.001, kod pacijenata sa astmom; r= 0.56, r&lt;0.001 kod pacijenata sa HOBP). Registrovana je dobra korelacija Rt sa vrednostima R5 (r=0.63, r&lt;0.001) i H5 (r= -0.55, r&lt;0.001) kod pacijenata sa astmom, kao dobra korelacija Rt sa R5 (r=0.73, r&lt;0.001) i H5 (r= -0.74, r&lt;0.001) kod pacijenata sa HOBP. Kod pacijenata sa astmom nije registrovana razlika između tri metode u detekciji opstruktivnog poremećaja ventilacije kod pacijenata sa simptomima bolesti, dok se upotrebom sve tri metode povećala se senzitivnost. Sve tri metode bile su u slaboj korelaciji sa stepenom dispnoičnih tegoba kod pacijenta sa astmom. Svi HOBP pacijenti imali su spirometrijski registrovanu opstrukciju disajnih puteva. Senzitivnost impusne oscilometrije raste sa stepenom opstrukcije disajnih puteva, te je sposobnost detekcije opstruktivnog poremećaja ventilacije kod pacijenata sa FEV1%&lt;80 % iznosila 55%, 95% CI 43-67 %, a kod pacijenata sa FEV1%&lt;70 % 61%, 95% CI 47-73%. Registrovana je statistički značajna razlika vrednosti oscilometrijskih parametara u odnosu na spirometrijski stadijum HOBP. Kod pacijenata sa HOBP, sve tri metode bile su u umerenoj korelaciji sa stepenom dispnoičnih tegoba. Zaključujemo da postoji umerena korelacija impulsne oscilometrije sa spirometrijom i telesnom pletizmografijom kod pacijenta sa astmom i HOBP. Impulsna oscilometrija bolje korelira sa telesnom pletizmografijom u poređenju sa spirometrijom. Korelacija tri metode raste sa stepenom opstrukcije disajnih puteva. Komplementarna upotreba tri metode daje sveobuhvatniju sliku respiratorne funkcije kod pacijenata sa astmom i HOBP.</p> / <p>Asthma and chronic obstructive pulmonary disease (COPD) are most common chronic noninfectious diseases of the respiratory system, representing a major health issue. Spirometry and body plethysmography are the procedures which are most often performed to diagnose these diseases and evaluate the lung function impairment of the affected patients. Impulse oscillometry is a novel procedure to establish the lung function impairment. It is easy to perform, and minimally depends on a patient&#39;s cooperation. The major objective of this Ph. D. thesis is to compare the parameters obtained by impulse oscillometry, spirometry and body plethysmography in patients with asthma and COPD, establish the sensitivity of these procedures in detecting an obstructive ventilation disorder, and correlate the parameters of impulse oscillometry, spirometry and body plethysmpography to the severity of dyspneic symptoms in adult asthma and COPD patients. Correlating the parameters obtained by impulse oscillometry and spirometry, a moderate negative correlation of R5 values to FEV1 in asthma (r= -0.47, р&lt;0.001) and COPD patients (r= -0.50, р&lt;0.001) has been obtained, as well as a moderate positive correlation of X5 to FEV1 (r= 0.54, р&lt;0.001, in asthmatics; r= 0.56, р&lt;0.001 in COPD patients). A good correlation of Rt to R5 (r=0.63, р&lt;0.001) and Х5 values (r= -0.55, р&lt;0.001) has been registered in asthmatics, as well as a good correlation of Rt to R5 (r=0.73, р&lt;0.001) and Х5 (r= -0.74, р&lt;0.001) in COPD patients. In asthma patients, the three analysed procedures exhibited no difference in detecting an obstructive ventilation disorder in the patients with manifested symptoms, while the sensitivity improved when the procedures were complementary performed. Any of the three procedures correlated poorly to the severity of dyspneic symptoms in asthma patients. All COPD patients had a spirometry-registered airway obstruction. The sensitivity of impulse oscillometry increased with the severity of the airway obstruction, so its capacity to detect an obstructive ventilation disorder in the patients with FEV1%&lt;80 % was 55%, 95% CI 43-67 %, and in the patients with FEV1%&lt;70 %, it amounted to 61%, 95% CI 47-73%. A statistically significant difference in the values of all oscillometry parameters was registered depending on the spirometric COPD stage. In COPD patients, all the three procedures were moderately correlated to the severity of dyspenic symptoms. In conclusion, there is a moderate correlation of impulse oscillometry to spirometry and body plethysmography in asthma and COPD patients. Impulse oscillometry correlates better to body plethysmography than to spirometry. The correlation of the three procedures increases with the severity of the airway obstruction. The complementary application of these three procedures provides a more accurate assessment of the respiratory function in asthma and COPD patients.</p>

Title: Verification of the effect of Ventolin Inhaler N in athletes without a diagnosis of asthma. Thesis' objective: The main objective of this Thesis is to determine whether the medicament Ventolin Inhaler N affects the performance of athletes without a diagnosis of asthma. Specifically, it is about how this medicament influences the parameters in aerobic and anaerobic zone, spirometric parameters and total performance. The other objective is to verify if any of the adverse events of Ventolin Inhaler N appears before the load. Methods: The descriptive analysis method for obtaining information about the issue is used in this Thesis. A test up to a vita maxima on a treadmill according to the protocol of Bunce, spirometric measurement and an answer sheet for the evaluation of subjective feelings immediately after the test is used for the research. Test was realized using a method repeated measurement, each tested person passed the test twice, once using the Ventolin Inhaler N and once without it. Results were recorded into tables and analyzed in SPSS programme using statistical methods. Results: The medicament Ventolin Inhaler N affects the performance of athletes without a diagnosis of asthma. The Ventolin influences the spirometric parameters measured before the test (FEV1, FVC), the spirometric...

Introdução: A doença pulmonar na fibrose cística (FC) é obstrutiva e supurativa, caracterizada por exacerbações recorrentes dos sintomas respiratórios e pela deterioração progressiva da função pulmonar. A gravidade da doença pulmonar é mensurada pelo volume expiratório forçado no primeiro segundo (VEF1), obtido através da espirometria. O VEF1 é um preditor de mortalidade bem documentado na literatura, utilizado como desfecho em ensaios clínicos e como parâmetro para indicar e monitorizar respostas terapêuticas. O objetivo do estudo foi avaliar o impacto da realização da espirometria em todas as consultas médicas na frequência das intervenções clínicas e na função pulmonar dos pacientes com FC. Métodos: Pacientes com diagnóstico de FC em acompanhamento em centro de referência, com idade entre 5-18 anos, realizaram uma espirometria antes de cada consulta médica durante o período de um ano (2014). Os dados coletados durante o seguimento foram comparados com o período de 24 meses anteriores ao estudo, período no qual os pacientes realizavam rotineiramente apenas uma espirometria a cada seis meses. Os principais desfechos avaliados foram diagnóstico de exacerbação pulmonar, frequência de introdução de novas terapias de uso crônico, encaminhamento ao ambulatório de transplante pulmonar e média do VEF1 basal. A utilização da espirometria para tomada de decisão clínica foi referida pelo médico assistente através de questionário. Resultados: Participaram do estudo 80 pacientes (idade média 12,1 anos e 61,3% do sexo masculino), tendo sido realizadas 418 consultas durante o ano de seguimento (5,2 consultas por paciente/ano). Exacerbações pulmonares foram diagnosticadas em 27,5% das consultas, com taxa de 1,44 exacerbações pulmonares por paciente/ano, frequência significativamente maior quando comparada com os anos 2012 (p=0,001) e 2013 (p=0,05). A espirometria foi útil para diagnóstico de exacerbação pulmonar em 83,5% das vezes, e em 21,9% destes casos o diagnóstico de exacerbação foi feito exclusivamente pelo parâmetro do declínio agudo do VEF1. Terapias de uso crônico foram introduzidas 0,4 vezes por paciente/ano, sem diferença estatisticamente significante com os períodos anteriores. A espirometria foi útil em 83,9% das vezes em que se iniciou uma nova terapia. Foram realizados três encaminhamentos para o serviço de transplante pulmonar, sem diferença estatística com os períodos anteriores. A média do VEF1 basal da amostra foi de 80% do previsto (DP+28,2), sem diferença significativa com os valores observados nos anos anteriores 78,1% em 2013 (p=0,27); e 76,7% em 2012 (p=0,7), indicando tendência para manutenção da função pulmonar destes pacientes. Conclusão: O estudo evidencia um impacto significativo da realização da espirometria rotineira em todas as consultas médicas no aumento do reconhecimento e tratamento de exacerbações pulmonares, com potenciais benefícios na função pulmonar destes pacientes / Background: Pulmonary disease in cystic fibrosis (CF) is obstructive and suppurative, characterized by recurrent exacerbations of respiratory symptoms and progressive deterioration of lung function. The severity of lung disease is measured by forced expiratory volume in the first second (FEV1), obtained through spirometry. FEV1 is a well documented predictor of mortality in the literature, used as an endpoint in clinical trials and as a parameter for indicating and monitoring therapeutic responses. The aim of the study was to evaluate the impact of performing spirometry during routine medical visits on the frequency of clinical interventions and lung function in CF patients. Methods: Patients with a diagnosis of CF in follow-up at the reference center, aged 5-18 years, underwent spirometry before each clinical visit during a one-year period (2014). Data collected during follow-up were compared with the 24-month period prior to the study, during which patients routinely performed only one spirometry every six months. The outcomes included diagnosis of pulmonary exacerbation, frequency of introduction of new therapies for chronic use, referral for pulmonary transplantation, mean baseline FEV1. The use of spirometry for clinical decision making was reported by the attending physician by questionnaire. Results: 80 patients (mean age 12.1 years and 61.3% males) participated in the study, and 418 visits were performed during the year of follow-up (5.2 visits per patient/year). Pulmonary exacerbations were diagnosed in 27.5% of the consultations, with a rate of 1.44 pulmonary exacerbations per patient/year, significantly higher than the year of 2012 (p = 0.001) and 2013 (p = 0.05). Spirometry was useful for diagnosis of pulmonary exacerbation in 83.5% of the time, and in 21.9% of these cases the diagnosis of exacerbation was made exclusively by the parameter of the acute decline of FEV1. Chronic use therapies were introduced 0.4 times per patient/year, with no statistically significant difference with previous periods. Spirometry was useful in 83.9% of the times a new therapy was started. Three referrals were made for pulmonary transplantation, with no statistical difference with previous periods. The mean baseline FEV1 of the sample was 80% predicted (SD+28.2), compared to 78.1% in 2013 (p=0.27); and 76.7% in 2012 (p=0.7), indicating a tendency for stabilization of the pulmonary function of these patients. Conclusion: The study evidences a significant impact of routine spirometry during routine encounters of CF patients in the increase of diagnosis and treatment of pulmonary exacerbations, with potential benefits for the pulmonary function of these patients