Transfusion Practice: Hemolysis Markers After In Vitro Infusion of Packed Red Blood Cells by the Gravitational Method in Peripheral Catheter.

The objective of this study was to compare hemolysis marker levels after in vitro infusion of red blood cells (RBCs) according to storage time, infusion rate, and peripheral intravenous catheter size. This is an experimental study with randomly administered RBCs in quintuplicate, according to storage time shorter than and longer than 14 days, as well as infusion rate (50 mL/h and 100 mL/h) using catheters with calibers of 14-, 18-, and 20-gauge. Aliquots were collected from RBCs (V1), after equipment and catheter (V2) free-flow filling and after controlled infusion through the catheter (V3). The hemolytic markers analyzed were degree of hemolysis (%), hematocrit (Ht) (%), total hemoglobin (THb) (g/dL), free hemoglobin (FHb) (g/dL), potassium (K) (mmol/L), and lactate dehydrogenase (LDH) (U/L), considering a probability of error ≤5%. Sixty experiments were performed with the analysis of 180 aliquots. When RBCs aged <14 days were used, all catheters tended to increase THb, FHb, and K; while >14 days, RBCs presented increased FHb and degree of hemolysis with catheters of 18-gauge and THb levels at 14-gauge. Among the conditions analyzed, only 20-gauge catheters (the smallest) did not influence changes in hemolysis markers, regardless of RBC storage time.

Nível de iluminação em Unidades Neonatais, segundo manejo do ambiente e mobiliário / Nivel de iluminación en unidades neonatales, según el manejo del ambiente y del mobiliario / Lighting level in Neonatal Units according to environment and furniture management

Resumo Objetivo Identificar os níveis de iluminação em unidades de terapia intensiva neonatais que realizam ou não períodos de manejo ambiental, segundo tipos de mobiliários, e indicar qual a condição que promove melhor ambiente ao recém-nascido, com relação à iluminação. Métodos Estudo transversal, descritivo e de correlação. A amostra foi composta pela mensuração da iluminância dentro de incubadora, incubadora com fotoproteção e berço de acrílico, posicionados segundo a proximidade da luz natural. As medições com luxímetro ocorreram a cada 60 segundos durante 24 horas ininterruptas por posição, em duas unidades de terapia intensiva neonatal iluminadas por luz natural e luz artificial incandescente, uma que não realiza o manejo ambiental (Instituição A) e outra que realiza por períodos de uma hora, quatro vezes ao dia (Instituição B). Para a análise dos dados foram utilizados os testes de Mann Whitney, Friedman e de Nemenyi. Resultados Os níveis de iluminação apresentaram grande variação conforme o período do dia e o tipo de mobiliário (mín=0;máx=889 lux), sendo superiores nos berços de acrílico. As posições distantes da fonte de luz natural não proporcionaram menores níveis de luz. A fotoproteção sobre as incubadoras propiciou menor exposição à luz. Os valores médios de iluminância em todas as posições consideradas na instituição A foram significativamente maiores, quando comparados à instituição B, demonstrando a eficácia da prática do manejo do ambiente (p<0,05). Conclusão A combinação do uso da proteção escura sobre a incubadora e do manejo do ambiente proporciona a melhor condição de iluminação para os recém-nascidos em unidades neonatais.

Resumen Objetivo Identificar los niveles de iluminación en unidades de terapia intensiva neonatales que realizan o no realizan períodos de manejo ambiental, según el tipo de mobiliario, e indicar qué condición promueve mejor ambiente al recién nacido, con relación a la iluminación. Métodos Estudio transversal, descriptivo y de correlación. La muestra estuvo compuesta por la medida de la iluminancia dentro de la incubadora, incubadora con foto protección y cuna de acrílico, posicionados según la proximidad de la luz natural. Las mediciones con luxómetro se realizaron cada 60 segundos durante 24 horas ininterrumpidas por posición, en dos unidades de cuidados intensivos neonatales iluminadas por luz natural y luz artificial incandescente, una que no realiza el manejo ambiental (institución A) y otra que la realiza por períodos de una hora, cuatro veces al día (institución B). Para el análisis de los datos fueron utilizados las pruebas de Mann Whitney, Friedman y de Nemenyi. Resultados Los niveles de iluminación presentaron gran variación conforme el período del día y el tipo de mobiliario (mín=0; máx=889 lux), superiores en las cunas de acrílico. La posición distante de la fuente de luz natural no proporcionó menores niveles de luz. La foto protección sobre las incubadoras propició una menor exposición a la luz. Los valores promedio de iluminancia en todas las posiciones consideradas en la institución A fueron significativamente más altos al compararlos con los de la institución B, lo que demuestra la eficacia de la práctica del manejo del ambiente (p<0,05). Conclusión La combinación del uso de la protección oscura sobre la incubadora y el manejo del ambiente proporciona una mejor condición de iluminación para los recién nacidos en unidades neonatales.

Abstract Objective To identify the lighting levels in neonatal intensive care units that perform environment management or not according to types of furniture, and indicate which condition promotes the best environment for the newborn in terms of lighting. Methods Cross-sectional, descriptive, correlational study. The sample was composed by measuring the illuminance inside an incubator, an incubator with protection from light and an acrylic crib positioned according to proximity of natural light. Measurements with a luxmeter took place every 60 seconds for 24 uninterrupted hours per position in two neonatal intensive care units lit by natural light and artificial incandescent light, one where environment management is not performed (Institution A) and the other where environment management is performed for one-hour periods, four times a day (Institution B). The Mann Whitney, Friedman and Nemenyi tests were used for data analysis. Results The lighting levels showed great variation according to the period of the day and type of furniture (min=0; max=889 lux), and were higher in acrylic cribs. Positions far from the natural light source did not provide lower light levels. Protection over the incubators provided less exposure to light. The mean illuminance values in all positions considered in institution A were significantly higher compared to institution B, demonstrating the effectiveness of the environment management practice (p<0.05). Conclusion The combination of the use of dark protection over the incubator and environment management practices provides the best lighting condition for newborns in neonatal units.

Neonatal Transfusion Practice: Hemolysis Markers After In Vitro Infusion of Packed Red Blood Cells by the Gravitational Method or Syringe Pump in a Peripheral Catheter.

The objective of this study was to verify the influence of the gravitational infusion method or syringe infusion pump on changes in hemolysis markers of irradiated and nonirradiated packed red blood cells (PRBCs) in vitro administered in a neonate peripheral intravenous catheter. An experimental study was conducted in a laboratory under controlled environmental conditions. Irradiated and nonirradiated PRBCs were administered in triplicate by the gravitational method and 10-mL/hour syringe infusion pump, in peripheral intravenous catheter, Vialon, 24-G caliber. Aliquots were collected directly from the PRBC bag, after manual filling of the infusion system and after infusion by the catheters. The following hemolytic markers were analyzed: degree of hemolysis (%), hematocrit (Ht, %), free hemoglobin (fHb, g/dL), potassium (K, mmol/L), and lactate dehydrogenase (LDH, U/L). Mann-Whitney and Student's t tests were used, P ≤ .05. The gravitational method significantly influenced increasing fHb (P = .007), Ht (P = .002), K (P = .002), and LDH (P = .003) values after PRBC irradiated infusion. The infusion of irradiated and non-irradiated PRBCs interferes with changes in hemolytic markers with the gravitational method. Syringe infusion pump proved to be a beneficial and safe alternative to irradiated and nonirradiated PRBC transfusion in newborns.

Influence of Ear Protectors on the Sleep of Preterm Newborns: A Randomized Controlled Clinical Study.

The purpose of this study was to compare the effect of ear protectors on the sleep of preterm newborns during the "quiet" times in intermediate care nursery. This was a clinical, randomized, controlled crossover study conducted in two neonatal units in São Paulo, Brazil. The sample consisted of preterm infants who met the inclusion and exclusion criteria for the study. Polysomnography and unstructured observation were used for data collection. Twenty-four preterm infants with a mean gestational age of 33.2 weeks and current weight of 1.747 g were analyzed. There was no significant difference in the total sleep time of preterm infants with and without the use of ear protectors. Newborns with lower gestational age showed a significant reduction in total sleep time with the use of ear protectors (p < .05). The use of ear protection did not increase the total sleep time for preterm infants.

O efeito da manipulação sobre o sono do recém-nascido prematuro / The effects of handling on the sleep of preterm infants

Resumo Objetivo: Identificar os tipos das manipulações realizadas em recém-nascidos prematuros e avaliar a influência sobre os tempos totais de sono, vigília e as variáveis objetivas do sono. Métodos: Estudo observacional e de correlação realizado em uma unidade neonatal de hospital universitário. A amostra foi constituída por 12 recém-nascidos prematuros que atenderam aos critérios de inclusão e exclusão estabelecidos para o estudo. Os dados foram coletados no período de março de 2013 à abril de 2014 e obtidos por meio do polissonígrafo, filmagem e observação durante 24 horas, ininterruptas. Utilizou-se a estatística descritiva, teste de Friedman, correlação de Pearson e regressão linear, com valores significantes p<0,05. Resultados: Os prematuros estudados eram predominantemente tardios, do sexo feminino, com baixo peso ao nascer e idade cronológica média de 14 dias. Os neonatos foram manipulados em média 176,4(±37,9) vezes durante as 24 horas, sendo que 58% das manipulações foram para monitoramento. A proporção do tempo total de sono foi 57,2% em 24 horas. Não houve correlação estatisticamente significante entre as frequências e os tempos de duração das manipulações diretas e do ambiente com o sono dos RNPT em 24 horas. A forma única apresentou correlação fortemente positiva com a vigília. Conclusão: As manipulações relacionaram-se ao monitoramento, terapêutica/diagnóstica e cuidados de higiene e conforto, com prevalência das manipulações diretas e únicas, não sendo identificada influência estatisticamente significante sobre as variáveis objetivas do sono, com exceção das manipulações únicas que apresentaram correlação com o tempo de vigília.

Abstract Objective: Identify the types of handling procedures performed on preterm infants and assess their influence on total sleep time, wake time and the objective sleep variables. Methods: Observational and correlational study conducted in the neonatal unit of a teaching hospital. The sample was made up of 12 preterm infants who met the inclusion and exclusion criteria established for the study. Data were collected from March 2013 to April 2014, by means of polysomnography, filming and observation for 24 uninterrupted hours. Descriptive statistics, the Friedman test, Pearson's correlation and linear regression, with significant values of p<0.05, were used. Results: The preterm infants studied were predominantly late preterm, female, with low birth weight, and a mean chronological age of 14 days. The newborns were handled an average of 176.4 (±37.9) times during a 24-hour period; 58% of the handling procedures were for monitoring. The proportion of total sleep time was 57.2% in 24 hours. There was no statistically significant correlation between frequency and duration of direct and ambient handling and the sleep of preterm infants in a 24-hour period. Single handling procedures had a strong positive correlation with wake time. Conclusion: Handling was related to monitoring, therapeutic/diagnostic and hygiene/comfort, with a prevalence of direct, single handling procedures. No statistically significant influence on the objective sleep variables was identified, except for single handling procedures where there was a correlation with wake time.

Effects of Handling and Environment on Preterm Newborns Sleeping in Incubators.

OBJECTIVE: To describe the total sleep time, stages of sleep, and wakefulness of preterm newborns and correlate them to levels of sound pressure, light, temperature, relative air humidity, and handling inside incubators. DESIGN: Observational, correlational study. SETTING: A neonatal intermediate care unit. PARTICIPANTS: Twelve preterm newborns, who were 32.2 ± 4.2 weeks gestational age and weighed 1,606 ± 317 g. METHODS: Sleep records were assessed by polysomnograph. Environmental variables were measured with a noise dosimeter, light meter, and thermohygrometer. To record time and frequency of handling, a video camera was used. All recordings were made for an uninterrupted 24-hour period. RESULTS: Mean total sleep time in 24 hours was 899 ± 71.8 minutes (daytime = 446 ± 45.3 and nighttime = 448 ± 60.2). Mean wakefulness was 552 ± 94.0 minutes. The predominant stage was quiet sleep. A significant correlation was identified only between the levels of light and wakefulness (r = 0.65 and p = .041). CONCLUSION: The environmental conditions and care provided to hospitalized preterm newborns did not influence sleep except for high light levels, which increased wakefulness. Nurses in clinical practice should implement strategies to promote and protect sleep by decreasing newborns' exposure to excessive light.

[Effect of reducing sensory and environmental stimuli during hospitalized premature infant sleep]. / Efeito da redução de estímulos sensoriais e ambientais no sono de recém-nascidos pré-termo hospitalizados.

OBJECTIVE: To compare the total sleep time of premature infant in the presence or absence of reducing sensory and environmental stimuli in the neonatal unit. METHOD: Longitudinal study in a Neonatal Intermediate Care Unit of a public hospital in Sao Paulo. The sample consisted of 13 premature infants. We used polysomnograph and unstructured observation for data collection. We analyzed 240 and 1200 minutes corresponding to the periods of the presence and absence of environmental management, respectively. Data were compared in proportion to the total sleep time in the two moments proposed by the study. RESULTS: The total sleep time in periods without environmental management was on average 696.4 (± 112.1) minutes and with management 168.5 (± 27.9) minutes, proportionally premature infant slept an average of 70.2% during periods with no intervention and 58.0% without management (p=0.002). CONCLUSION: Reducing stimulation and handling of premature infant environment periods was effective to provide greater total sleep time.

Effect of reducing sensory and environmental stimuli during hospitalized premature infant sleep / Efecto de la reducción de estímulos sensoriales y ambientales en el sueño de recién nacidos pré término hospitalizados / Efeito da redução de estímulos sensoriais e ambientais no sono de recém-nascidos pré-termo hospitalizados

OBJECTIVETo compare the total sleep time of premature infant in the presence or absence of reducing sensory and environmental stimuli in the neonatal unit.METHODLongitudinal study in a Neonatal Intermediate Care Unit of a public hospital in Sao Paulo. The sample consisted of 13 premature infants. We used polysomnograph and unstructured observation for data collection. We analyzed 240 and 1200 minutes corresponding to the periods of the presence and absence of environmental management, respectively. Data were compared in proportion to the total sleep time in the two moments proposed by the study.RESULTSThe total sleep time in periods without environmental management was on average 696.4 (± 112.1) minutes and with management 168.5 (± 27.9) minutes, proportionally premature infant slept an average of 70.2% during periods with no intervention and 58.0% without management (p=0.002).CONCLUSIONReducing stimulation and handling of premature infant environment periods was effective to provide greater total sleep time.

OBJETIVOComparar el tiempo total de sueño de los recién nacidos pré término en la vigencia o no de la reducción de estímulos sensoriales y ambientales de la unidad neonatal.MÉTODOEstudio longitudinal realizado en una Unidad de Cuidados Intermedios Neonatal de hospital público de São Paulo. La muestra se constituyó de 13 pre términos. Se utilizó el polisonógrafo y la observación no estructurada para la recogida de datos. Fueron analizados 240 minutos y 1200 minutos correspondientes a los períodos de la presencia y ausencia del manejo ambiental, respectivamente. Los datos fueron comparados proporcionalmente a los tiempos totales de sueño en los dos momentos propuestos por el estudio.RESULTADOSMostraron que el tiempo total de sueño en los momentos sin manejo ambiental fue en promedio de 696,4 (±112,1) minutos y con manejo de 168,5 (±27,9) minutos, siendo que proporcionalmente los prematuros durmieron en promedio el 70,2% en los períodos con intervención y el 58,0% sin el manejo (p=0,002).CONCLUSIÓNLa reducción del estímulo y el mantenimiento de los prematuros en los períodos de manejo del ambiente fueron eficaces para proporcionar mayor tiempo total de sueño.

OBJETIVOComparar o tempo total de sono dos recém-nascidos pré-termo na vigência ou não da redução de estímulos sensoriais e ambientais da unidade neonatal.MÉTODOEstudo longitudinal realizado em uma Unidade de Cuidados Intermediários Neonatal de hospital público de São Paulo. A amostra constituiu-se de 13 pré-termos. Utilizou-se o polissonígrafo e a observação não estruturada para coleta de dados. Foram analisados 240 minutos e 1200 minutos correspondentes aos períodos da presença e ausência do manejo ambiental, respectivamente. Os dados foram comparados proporcionalmente aos tempos totais de sono nos dois momentos propostos pelo estudo.RESULTADOSMostraram que o tempo total de sono nos momentos sem manejo ambiental foi em média de 696,4 (±112,1) minutos e com manejo de 168,5 (±27,9) minutos, sendo que proporcionalmente os prematuros dormiram em média 70,2% nos períodos com intervenção e 58,0% sem o manejo (p=0,002).CONCLUSÃOA redução do estímulo e da manipulação dos prematuros nos períodos de manejo do ambiente foi eficaz para proporcionar maior tempo total de sono.

Efeito do "horário do soninho" para redução de ruído na unidade de terapia intensiva neonatal / Effect of "quiet time" to reduce noise at the neonatal intensive care unit

Objetivo: Identificar e comparar os Níveis de Pressão Sonora (NPS) no interior das incubadoras de UTIN com e sem a intervenção dos "horários do soninho". Métodos: Pesquisa quantitativa, descritiva realizada em UTIN de um hospital universitário. Utilizou-se dosímetro Quest 400 para a coleta de dados. A amostra constituiu-se de 261 horas de registros. Resultados: Os resultados indicam que nos horários determinados para a intervenção, os maiores níveis de pressão sonora equivalente médio (Leqmédio) foram 58,5 dBA na sala A e 53,1 dBA na B, fora desses períodos obteve-se um nível de ruído contínuo equivalente médio (Leqmédio) de 79,7 e 74,3 dBA, respectivamente. Conclusão: Nos períodos de intervenção os NPS estão em consonância ao recomendado pelos órgãos regulamentadores o que reforça a efetividade do "horário do soninho", porém os resultados demonstram a necessidade de melhorar o perfil acústico do micro e macro ambiente do neonato, visto que funcionam como um sistema interrelacionado. .