Agreement Between Alberta Infant Motor Scale Assessment and Maternal Perception of Motor Development in Full-Term Infants.

OBJECTIVES: To verify the agreement between the Alberta Infant Motor Scale assessment and maternal perception of the motor development in full-term infants. METHODS: This is a cross-sectional study involving 161 infants and mothers. Children were assessed with the Alberta Infant Motor Scale (AIMS) for motor developmental classification. Mothers completed questionnaires aiming to identify maternal profiles and impressions about their children's development. The kappa test was used to analyze the concordance between AIMS and mother perceptions. RESULTS: A total of 83.2% of the sample was classified as typically developing and 16.8% as suspected or delayed development. The maternal impression indicates that 77% of infants are developing typically, 19.9% perceived their infants' development as advanced, and 3.1% delayed development. There was low agreement between the mothers' perceptions and AIMS classifications (kappa = 0.153). CONCLUSIONS: Maternal perception of their infant's development was unsatisfactory for evaluation of motor development because their perceptions did not agree with the findings of the AIMS.

Intra- and inter-rater reliability of a biophotogrammetric assessment protocol for preterm infants / Confiabilidade intra e interexaminador do protocolo de avaliação biofotogramétrica em prematuros

ABSTRACT Objective: To measure the intra- and inter-rater reliability of a biophotogrammetric assessment protocol for thoracoabdominal motion in preterm infants. Methods: This is an analytical cross-sectional study. Footage of 40 preterm infants was made in two views (lateral and anterior). The babies were placed in the supine position, with retroverted pelvis and semiflexed knees. Acrylic markers were positioned on surgical tape in eight predetermined anatomical points. We analyzed 4 variables in lateral view and 11 in anterior view (angular and linear) (ImageJ®), divided into two stages: 1. same frames - three blinded evaluators analyzed frames previously selected by the main researcher (inter-rater analysis 1), reviewing these same frames after 15 days (intra-rater analysis 1); 2. different frames - each evaluator selected the frames from the original video and repeated the protocol (inter-rater analysis 2), with a review after 15 days (intra-rater analysis 2). In stage 2, we tested the reliability of the entire process, from image selection to the analysis of variables. Data agreement and reproducibility were obtained by the intraclass correlation coefficient (ICC). Results: Agreement was high, particularly in angular variables (ICC 0.82 to 0.99). Linear variables ranged between very good and excellent in analysis 1 (same frames: ICC 0.64 to 0.99) and analysis 2 (different frames: ICC 0.44 to 0.89). Conclusions: The present study suggests that the proposed protocol for the thoracoabdominal motion analysis of preterm neonates has high reliability.

RESUMO Objetivo: Mensurar a confiabilidade intra e interexaminador de um protocolo de avaliação biofotogramétrica da mobilidade toracoabdominal de prematuros. Métodos: Estudo de caráter transversal e analítico. Incluíram-se filmagens de 40 prematuros em duas vistas (lateral e superior), realizadas em supino, pelve retrovertida e joelhos em semiflexão. Marcadores de acrílico foram posicionados sobre Micropores em oito pontos anatômicos predeterminados. Foram analisadas 4 variáveis na vista lateral e 11 na vista superior (angulares e lineares) (ImageJ®), divididas em duas etapas: (1-Frames iguais) análises de fotogramas previamente selecionados pela pesquisadora principal por três avaliadores cegos (análise interexaminador 1), com reanálise desses mesmos fotogramas após 15 dias (análise intraexaminador 1); (2-Frames diferentes) cada avaliador selecionou os fotogramas por meio do vídeo original e repetiu o protocolo (análise interexaminador 2), com reanálise após 15 dias (análise intraexaminador 2). Em (2), foi testada a confiabilidade de todo o processo de análise, desde a separação das imagens até a análise das variáveis. A concordância e reprodutibilidade dos dados foram obtidas pelo coeficiente de correlação intraclasse (CCI). Resultados: Houve concordância forte, com ênfase nas variáveis angulares (CCI [0,82 a 0,99]). As variáveis lineares apresentaram variação entre muito boa e excelente na análise 1 (frames iguais: CCI 0,64 a 0,99) e na análise 2 (frames diferentes: CCI entre 0,44 e 0,89). Conclusões: O presente estudo sugere forte confiabilidade do protocolo proposto para análise da movimentação toracoabdominal de neonatos prematuros.

INTRA- AND INTER-RATER RELIABILITY OF A BIOPHOTOGRAMMETRIC ASSESSMENT PROTOCOL FOR PRETERM INFANTS.

OBJECTIVE: To measure the intra- and inter-rater reliability of a biophotogrammetric assessment protocol for thoracoabdominal motion in preterm infants. METHODS: This is an analytical cross-sectional study. Footage of 40 preterm infants was made in two views (lateral and anterior). The babies were placed in the supine position, with retroverted pelvis and semiflexed knees. Acrylic markers were positioned on surgical tape in eight predetermined anatomical points. We analyzed 4 variables in lateral view and 11 in anterior view (angular and linear) (ImageJ®), divided into two stages: 1. same frames - three blinded evaluators analyzed frames previously selected by the main researcher (inter-rater analysis 1), reviewing these same frames after 15 days (intra-rater analysis 1); 2. different frames - each evaluator selected the frames from the original video and repeated the protocol (inter-rater analysis 2), with a review after 15 days (intra-rater analysis 2). In stage 2, we tested the reliability of the entire process, from image selection to the analysis of variables. Data agreement and reproducibility were obtained by the intraclass correlation coefficient (ICC). RESULTS: Agreement was high, particularly in angular variables (ICC 0.82 to 0.99). Linear variables ranged between very good and excellent in analysis 1 (same frames: ICC 0.64 to 0.99) and analysis 2 (different frames: ICC 0.44 to 0.89). CONCLUSIONS: The present study suggests that the proposed protocol for the thoracoabdominal motion analysis of preterm neonates has high reliability.

Temporal assessment of neonatal pain after airway aspiration. / Avaliação temporal da dor neonatal após aspiração de vias aéreas.

OBJECTIVE: To temporally assess a painful stimulus in premature infants using 3 neonatal pain scales. METHODS: A total of 83 premature infants were observed during airway aspiration by 3 evaluators (E1, E2 and E3) using 3 pain assessment scales (Neonatal Facial Coding System - NFCS; Neonatal Infant Pain Scale - NIPS; and Premature Infant Pain Profile - PIPP) at 5 time points: T1 (before airway aspiration), T2 (during airway aspiration), T3 (1 minute after airway aspiration), T4 (3 minutes after airway aspiration), and T5 (5 minutes after airway aspiration). Light's Kappa (agreement among examiners and among scales at each time point) and the McNemar test (comparison among time points) were used considering p < 0.05. RESULTS: There was a significant difference between the 3 examiners for T1 and T2 using the 3 scales. In T3, pain was observed in 22.9%/E1, 28.9%/E2, and 24.1%/E3 according to the NFCS; 22.9%/E1, 21.7%/E2, and 16.9%/E3 according to the NIPS; and 49.4%/E1, 53.9%/E2, and 47%/E3 according to the PIPP. There was a difference between T1 and T3 using the 3 scales, except for 2 examiners for the PIPP (E2: p = 0.15/E3: p = 0.17). Comparing T4 and T5 to T1, there was no difference in the 3 scales. CONCLUSION: Premature infants required at least 3 minutes to return to their initial state of rest (no pain).

NEONATAL PAIN: CHARACTERIZATION OF THE PHYSIOTHERAPIST'S PERCEPTION IN THE NEONATAL INTENSIVE CARE UNIT.

OBJECTIVE: To describe the perception of physiotherapists in neonatal units regarding pain, the use of measurement scales and strategies that minimize pain. METHODS: Interviews were conducted with physiotherapists in hospitals with neonatal units between 2013 and 2015 in Rio de Janeiro. The questions concerned the knowledge of the feeling of pain, from its recognition to its care or treatment. The description of the results was done by comparing public and private hospitals (Fisher''s Exact exact Testtest), considering p<0.05 as significant. RESULTS: 27 hospitals were visited. All the professionals interviewed (n=27) stated that the newborns feel pain, with facial expression being the most cited and known sign for pain. 26% of physiotherapists believe that newborns experience pain at the same magnitude as adults. Among the scales, the Neonatal Infant Pain Scale (NIPS) was the most well known, but only 37% of the units had routine pain assessment protocols. IV cannulation and blood collection were the most mentioned procedures as a cause of pain and there was no difference between public and private hospitals. CONCLUSIONS: There is a gap in the knowledge about neonatal pain and how to evaluate it among the participating physiotherapists, with no systematization of care routines involving this assessment.

Neonatal pain: characterization of the physiotherapist's perception in the neonatal intensive care unit / Dor neonatal: caracterização da percepção do fisioterapeuta na unidade de terapia intensiva neonatal

ABSTRACT Objective: To describe the perception of physiotherapists in neonatal units regarding pain, the use of measurement scales and strategies that minimize pain. Methods: Interviews were conducted with physiotherapists in hospitals with neonatal units between 2013 and 2015 in Rio de Janeiro. The questions concerned the knowledge of the feeling of pain, from its recognition to its care or treatment. The description of the results was done by comparing public and private hospitals (Fisher''s Exact exact Testtest), considering p<0.05 as significant. Results: 27 hospitals were visited. All the professionals interviewed (n=27) stated that the newborns feel pain, with facial expression being the most cited and known sign for pain. 26% of physiotherapists believe that newborns experience pain at the same magnitude as adults. Among the scales, the Neonatal Infant Pain Scale (NIPS) was the most well known, but only 37% of the units had routine pain assessment protocols. IV cannulation and blood collection were the most mentioned procedures as a cause of pain and there was no difference between public and private hospitals. Conclusions: There is a gap in the knowledge about neonatal pain and how to evaluate it among the participating physiotherapists, with no systematization of care routines involving this assessment.

RESUMO Objetivo: Descrever a percepção dos fisioterapeutas de unidades neonatais sobre a dor, a utilização de escalas de mensuração e estratégias que a minimizem. Métodos: Entrevistas foram realizadas com chefes ou rotinas de fisioterapia em hospitais com unidades neonatais entre 2013 e 2015, no Rio de Janeiro. As perguntas versaram sobre o conhecimento da sensação dolorosa, desde seu reconhecimento até seu cuidado ou tratamento. Foi realizada a descrição dos resultados, comparando-se os dados dos hospitais públicos com os privados (teste exato de Fisher), considerando-se p<0,05 como significante. Resultados: Vinte e sete hospitais foram visitados. Todos os profissionais entrevistados (n=27) afirmaram que os recém-nascidos sentem dor, sendo a expressão facial o sinal de dor mais conhecido. Do total de fisioterapeutas entrevistados, 26% acreditam que os neonatos sentem dor na mesma magnitude que o adulto. Entre as escalas, a Neonatal Infant Pain Scale (NIPS) era a mais conhecida, e apenas 37% das unidades possuíam protocolos de avaliação da dor na rotina. As coletas e as punções foram os procedimentos mais mencionados como causa de dor, e não houve diferença entre os hospitais públicos e privados. Conclusões: Constatou-se uma lacuna no conhecimento sobre dor neonatal e como avaliá-la entre os fisioterapeutas participantes, com ausência de sistematização de rotinas assistenciais que envolvam essa aferição.

Benefícios da inserção do fisioterapeuta sobre o perfil de prematuros de baixo risco internados em unidade de terapia intensiva / Beneficios de la inserción del fisioterapeuta sobre el perfil de prematuros de bajo riesgo internados en unidad de terapia intensiva / Benefits of inserting the physical therapist on the profile of low-risk premature infants admitted to an intensive care unit

RESUMO O presente estudo visa descrever os benefícios da inserção do fisioterapeuta sobre o perfil de prematuros de baixo risco internados em unidade de terapia intensiva neonatal. Estudo caso-controle, retrospectivo, com consulta aos prontuários de prematuros internados em 2006/2007 sem fisioterapia (PREF) e em 2009/2010 com fisioterapia por até 8h/dia (POSF). Incluíram-se 61 prematuros no período PREF e 93 no POSF, nascidos com ≥1000g, SNAP-PE II <40, com tempo de suporte ventilatório ≥24h. Verificou-se os perfis materno e dos neonatos, tempos de internação, de ventilação mecânica invasiva e não invasiva e de oxigenoterapia. Realizou-se análise descritiva, teste Mann Whitney, teste t, qui-quadrado e Fisher, considerando-se p≤0,05. Houve diferença significativa entre as idades gestacionais [PREF: 230,5 (±16,5)/ POSF: 226 (±15); p=0,05], frequência de sepse [PREF: 6 (10%)/ POSF: 30 (32%); p<0,01], de síndrome do desconforto respiratório [PREF: 11(18%)/ POSF: 43 (46%); p<0,01], necessidade de reanimação na sala de parto [PREF: 10 (16%)/ POSF: 32 (34%); p=0,02], necessidade de intubação orotraqueal [PREF: 8 (13%)/ POSF: 26 (28%); p=0,05], tempo de ventilação não invasiva (PREF: 0,1±0,4 dias/ POSF: 0,8±2,3 dias; p<0,01), de ventilação invasiva (PREF: 0,4±1,3 dias/ POSF: 1,3±3,3 dias; p=0,04), de pressão positiva contínua em vias aéreas (PREF: 1,5±1,0 dias/ POSF: 2,7±3,8 dias; p=0,04). A presença do fisioterapeuta gerou benefícios, contribuindo para a manutenção dos tempos de internação e de oxigenoterapia mesmo diante de um perfil de recém-nascidos mais imaturos e com mais intercorrências no período após a inserção da fisioterapia.

RESUMEN El presente estudio describe los beneficios de la inserción del fisioterapeuta sobre el perfil de prematuros de bajo riesgo internados en unidad de terapia intensiva. Estudio caso-control, retrospectivo, con prontuarios de prematuros internados en 2006/2007 (sin fisioterapia - PREF) y en 2009/2010 (con fisioterapia por hasta 8h / día - POSF). Se incluyeron 61 prematuros (PREF) y 93 (POSF), ≥ 1000g, SNAP-PE II <40, con tiempo de soporte ventilatorio ≥ 24h. Se verificaron los perfiles maternos y de los neonatos, tiempos de internación, de ventilación mecánica invasiva y no invasiva y de oxigenoterapia. Se realizó análisis descriptivo, Mann Whitney, t, qui-cuadrado y Fisher, considerando p ≤ 0,05. Se observó diferencia entre las edades gestacionales [PREF: 230,5 (± 16,5) / POSF: 226 (±15); p=0,05], frecuencia de sepsis [PREF: 6 (10%) / POSTP: 30 (32%); p <0,01], síndrome de distrés respiratorio [PREF: 11 (18%) / POSF: 43 (46%); p <0,01], necesidad de reanimación en la sala de parto [PREF: 10 (16%) / POSTP: 32 (34%); p=0,02], necesidad de intubación [PREF: 8 (13%) / POSF: 26 (28%); (p=0,05), tiempo de ventilación no invasiva (PREF: 0,1±0,4 días / POSF: 0,8±2,3 días, p<0,01), ventilación invasiva (PREF: 0, 4±1,3 días / POSF: 1,3±3,3 días, p=0,04). La presencia del fisioterapeuta generó beneficios, contribuyendo para el mantenimiento de los tiempos de internación y de oxigenoterapia, aunque el perfil de recién nacidos tuvo más intercurrencias después de la inserción de la fisioterapia.

ABSTRACT This study aims to describe the benefits of inserting the physical therapist on the profile of low-risk premature infants in neonatal intensive care units. This is a retrospective control study, with consultation to the medical records of premature infants admitted in 2006/2007 without physical therapy (PREP) and in 2009/2010 with physical therapy for up to 8h/day (POSTP). 61 preterm infants in the PREP period and 93 in the POSTP were included, born with ≥1000g, SNAP-PE II <40, with a duration of ventilatory support ≥24h. Maternal and neonatal profiles, duration of hospitalization, invasive and non-invasive mechanical ventilation and oxygen therapy were verified. Descriptive analysis, the Mann Whitney test, t-test, Chi-squared and Fisher's test were performed, considering p≤0.05. There was a significant difference between gestational ages [PREP: 230.5 (±16.5)/POSTP: 226 (±15); p = 0.05], frequency of sepsis [PREP: 6 (10%) / POSTP: 30 (32%); p < 0.01], respiratory distress syndrome [PREP: 11 (18%)/POSTP: 43 (46%); p < 0.01], need for resuscitation in the delivery room [PREP: 10 (16%) / POSTP: 32 (34%); p = 0.02], need for orotracheal intubation [PREP: 8 (13%)/POSTP: 26 (28%); invasive ventilation (PREP: 0.4±1.3 days/POSTP: 1.3±3.3 days, p = 0.04), continuous positive airway pressure (PREP: 1.5±1.0 days/POSTP: 2.7±3.8 days, p = 0.04). The presence of the physical therapist generated benefits, contributing to the maintenance of the length of hospitalization and oxygen therapy in face of a profile of more immature newborns and with more complications in the period after physical therapy was inserted.

Mapeamento demográfico e caracterização do perfil de assistência fisioterapêutica oferecida nas unidades de terapia intensiva neonatais do Rio de Janeiro (RJ) / Mapeo demográfico y caracterización del perfil de asistencia fisioterapéutica ofrecida en unidades de cuidados intensivos neonatales de Río de Janeiro (RJ), Brasil / Demographic mapping and characterization of physical therapy care profile offered in Neonatal Intensive Care Units in the City of Rio de Janeiro, Brazil

RESUMO Este estudo visa ao mapeamento e a caracterização do perfil da assistência fisioterapêutica oferecida em unidades de terapia intensiva (UTI) neonatais dos hospitais públicos e privados do Rio de Janeiro (RJ). Para isso, foram realizadas entrevistas com os chefes sobre as rotinas dos serviços de fisioterapia dos hospitais do Rio de Janeiro com UTI neonatais entre janeiro de 2013 e janeiro de 2015. As perguntas abordaram distribuição das horas de trabalho, organização e localização institucional, tempo de experiência na área, tipos de técnicas fisioterapêuticas e recursos utilizados. Foram incluídos 27 hospitais (17 públicos e 10 privados) da seguinte forma: 6 hospitais na Zona Sul, 8 na Zona Norte, 8 na Zona Oeste e 5 no Centro e Zona Portuária. O número total de fisioterapeutas integrantes das equipes foi de 141, sendo que 59% deles eram especialistas em terapia intensiva neonatal. No que se refere aos chefes entrevistados, 16 (59%) também eram especialistas e 21 (79%) possuíam mais de cinco anos de experiência. Foram citadas diversas técnicas fisioterapêuticas, como: fisioterapia motora, vibração torácica e reequilíbrio tóraco-abdominal. A partir do exposto, verificou-se que a assistência fisioterapêutica neonatal do Rio de Janeiro não está distribuída uniformemente no território, estando mais concentrada nas regiões Sul e Central. Além disso, falta padronização das rotinas e carga horária, sendo necessária adequação do perfil assistencial para atenção ideal e integral do recém-nascido (RN).

RESUMEN Este estudio visa el mapeo y la caracterización del perfil de la asistencia fisioterapéutica ofrecida en unidades de cuidados intensivos (UCI) neonatales de los hospitales públicos y privados de Río de Janeiro (RJ), Brasil. Para eso, fueron realizadas entrevistas con los jefes a respecto de las rutinas de los servicios de fisioterapia de los hospitales de Río de Janeiro con UCI neonatales entre enero de 2013 y enero de 2015. Las preguntas abordaron a respecto de distribición de las horas de trabajo, organización y localización institucional, tiempo de experiencia en la área, tipos de técnicas fisioterapéuticas y recursos utilizados. Fueron incluidos 27 hospitales (17 públicos y 10 privados) de la seguiente forma: 6 hospitales en Zona Sul, 8 en Zona Norte, 8 en Zona Oeste y 5 en Centro y Zona Portuaria. El número total de fisioterapeutas integrantes de los equipos fue de 141, siendo que 59% de ellos eron expertos en cuidados intensivos neonatales. En lo que se refiere a los jefes entrevistados, 16 (59%) también eron expertos y 21 (79%) poseían más de cinco años de experiencia. Fueron citadas diversas técnicas fisioterapéuticas, como: fisioterapia motora, vibración torácica y reequilibrio tóraco-abdominal. A partir del exposto, se verificó que la asistencia fisioterapéutica neonatal de Río de Janeiro não está distribuída uniformemente en el territorio, estando más concentrada en las regiones Sul y Central. Además, falta padronización de las rutinas y carga horaria, siendo necesaria adecuación del perfil asistencial para atención ideal y integral del neonato.

ABSTRACT This study aims to map and characterize the profile of physical therapy care offered in intensive care units (ICU) of public and private hospitals in the city of Rio de Janeiro. To this end, a cross-sectional study was conducted by interviews with the heads/routine chiefs of physical therapy services of the hospitals in the city of Rio de Janeiro with neonatal ICU (NICU) from January 2013 to January 2015. The questions comprised the distribution of working hours, organization and institutional location, time of experience in the area, types of physical therapy techniques and resources used. Twenty seven hospitals (17 public and 10 private) were studied as follows: 6 hospitals in the South area of the city, 8 in the North, 8 in the West and 5 in the central area and port area. The total number of physical therapists of the teams was 141, and 59% of them were experts in neonatal intensive care. With regard to the heads/routine chiefs, 16 (59%) were specialists in neonatal intensive care and 21 (79%) had more than five years of experience. Various physical therapy techniques were cited as: motor physical therapy, chest vibration and thoracic-abdominal rebalance. According to the results, there was not a single standard regarding routines, protocols, professional organization and training, and techniques used. In addition, it was found that the physical therapy in ICUs was not held full-time, neither provided the three shifts care.

Importance of physiotherapy/nursing multidisciplinary integration about update newborn position in the neonatal intensive care unit / Importância da integração multidisciplinar fisioterapia/enfermagem na atualização sobre posicionamento do recém-nascido na unidade de terapia intensiva neonatal

AbstractIntroduction The high-risk newborns may require long periods of hospitalization until they reach clinical stability for hospital discharge. Avoiding babies to be in only one body position may be an effective way to cause respiratory and neuro-psycho-motor benefits, comfort and preventing pressure ulcers.Objectives This study investigated the impact of physiotherapy/nursing integration in update on body positioning of the newborn in the Neonatal Intensive Care Unit.Methods A questionnaire was administered to nurses and nursing technicians of the neonatal unit of Maternity School of UFRJ and nurses of the Advanced Course in Neonatal Nursing from the same institution. Two classes were taught by the physical therapist of the sector and the questions answered before and after these lessons. It was also a brief characterization of professional participants of the study. We used the Student's t test to compare the correct answers before (PRE) and after (POST) the classes, considering p < 0.05.Results There was a significant increase in the degree of knowledge of nurses and nursing technicians when compared the responses before (nurses: 68.8%; technicians: 70.1%) and after classes (nurses: 78.4 %; technicians: 88.9%). The nurses were less than five years of graduated (45%) and little time of professional experience in neonatology (60%). Forty-seven percent of technicians had less than five years of training and 82% had less than 10 years of experience.Conclusion The use of training by the nursing staff was significant, showing the importance of multidisciplinary approach and the integration of knowledge in the search for a humanized and effective care.

ResumoIntrodução Recém-nascidos de risco podem necessitar de longas internações até atingirem estabilidade clínica para a alta hospitalar. Evitar mantê-los em uma só postura é um dos cuidados que devem ser realizados a fim de beneficiar a respiração, o desenvolvimento neuropsicomotor e o conforto e prevenir escaras por pressão.Objetivos Verificar o impacto da integração fisioterapia/enfermagem na atualização sobre posicionamento do recém-nascido no leito da UTI Neonatal.Métodos Foi aplicado um questionário aos enfermeiros e técnicos de enfermagem da unidade neonatal da Maternidade Escola da UFRJ e aos enfermeiros do curso de aperfeiçoamento em enfermagem neonatal da mesma instituição. Duas aulas foram ministradas pela fisioterapeuta do setor e as perguntas, respondidas antes e após tais aulas. Foi realizada também uma breve caracterização profissional dos participantes do estudo. Utilizou-se o teste t Student para comparar os acertos antes (PRÉ) e após (PÓS) as aulas, considerando-se p < 0.05.Resultados Houve um aumento no grau de conhecimento dos enfermeiros e técnicos de enfermagem ao serem comparadas as respostas antes (enfermeiros: 68,8%; técnicos: 70,1%) e após as aulas (enfermeiros: 78,4%; técnicos: 88,9%). Os enfermeiros apresentaram em sua maioria menos de cinco anos de graduados (45%) e pouco tempo de experiência profissional em neonatologia (60%). Entre os técnicos, 47% tinham menos de cinco anos de formação e 82%, possuía menos de 10 anos de experiência.Conclusão O aproveitamento do treinamento pela equipe de enfermagem foi significativo, mostrando a importância da atuação multidisciplinar e da integração do conhecimento na busca por um cuidado humanizado, técnico e eficaz.

Lung mechanics and histology during sevoflurane anesthesia in a model of chronic allergic asthma.

BACKGROUND: There are no studies examining the effects of sevoflurane on a chronically inflamed and remodeled airway, such as that found in asthma. In the present study, we sought to define the respiratory effects of sevoflurane in a model of chronic allergic asthma. For this purpose, pulmonary mechanics were studied and lung morphometry analyzed to determine whether the physiological modifications reflected underlying morphological changes. METHODS: Thirty-six BALB/c mice (20-25 g) were randomly divided into four groups. In OVA groups, mice were sensitized with ovalbumin and exposed to repeated ovalbumin challenges. In SAL groups, mice received saline using the same protocol. Twenty-four hours after the last challenge, the animals were anesthetized with pentobarbital sodium (PENTO, 20 mg/kg i.p.) or sevoflurane (SEVO, 1 MAC). Lung static elastance (Est), resistive ([DELTA]P1) and viscoelastic/inhomogeneous ([DELTA]P2) pressure decreases were analyzed by an end-inflation occlusion method. Lungs were fixed and stained for histological analysis. RESULTS: Animals in the OVASEVO group showed lower [DELTA]P1 (38%), [DELTA]P2 (24%), and Est (22%) than animals in the OVAPENTO group. Histology demonstrated greater airway dilation (16%) and a lower degree of alveolar collapse (25%) in the OVASEVO compared with OVAPENTO group. [DELTA]P1 was lower (35%) and airway diameters larger (12%) in the SALSEVO compared with SALPENTO group. CONCLUSION: Sevoflurane anesthesia acted both at airway level and lung periphery reducing ([DELTA]P1 and [DELTA]P2 pressures, and Est in chronic allergic asthma.

Fisiopatologia e manejo clínico da ventilação seletiva / Physiopathology and clinical management of one-lung ventilation

A ventilação seletiva consiste em ventilar um pulmão mecanicamente enquanto o outro é ocluído ou exposto ao ar ambiente. Essa técnica permite visualizar as estruturas intratorácicas e, assim, fornecer excelentes condições cirúrgicas. Todo o volume corrente é administrado apenas para um único pulmão. Entretanto, este procedimento está associado à redução da pressão parcial arterial de oxigênio, principalmente em pacientes com comprometimento pulmonar prévio, por diminuição na superfície da área de troca gasosa e perda da auto-regulação pulmonar normal. Sendo assim, a manutenção da oxigenação e a eliminação de gás carbônico adequadas representam o maior desafio durante o manejo da ventilação seletiva. Preconiza-se que o pulmão dependente seja ventilado com um volume corrente similar àquele utilizado para ventilar ambos os pulmões na ventilação mecânica convencional, além de altas frações inspiradas de oxigênio. Entretanto, vários outros métodos vêm sendo propostos a fim de minimizar a hipoxemia durante a ventilação seletiva: conferir o correto posicionamento do tubo de duplo-lúmen, uso de pressão positiva ao final da expiração, pressão contínua nas vias aéreas, uso de óxido nítrico, ventilação de alta freqüência e recrutamento alveolar. O manejo da ventilação seletiva continua sendo um desafio à prática clínica.