Search results for "Respiratory Rate"
showing 8 items of 58 documents
High aerobic growth with low respiratory rate: The ndh-deficient Zymomonas mobilis
2007
The quest for the perfect Weaning Index.
2019
Effect of high-flow nasal therapy on dyspnea, comfort, and respiratory rate
2019
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PaO2oscillations caused by cyclic alveolar recruitment can be monitored in pig buccal mucosa microcirculation
2012
BACKGROUND Cyclic alveolar recruitment and derecruitment play a role in the pathomechanism of acute lung injury and may lead to arterial partial pressure of oxygen (PaO(2) ) oscillations within the respiratory cycle. It remains unknown, however, if these PaO(2) oscillations are transmitted to the microcirculation. The present study investigates if PaO(2) oscillations can be detected in the pig buccal mucosa microcirculation. METHODS Respiratory failure was induced by surfactant depletion in seven pigs. PaO(2) oscillations caused by cyclic recruitment and derecruitment were measured in the thoracic aorta by fast fluorescence quenching of oxygen technology. Haemoglobin oxygen saturation, haem…
The Secretion of Areolar (Montgomery's) Glands from Lactating Women Elicits Selective, Unconditional Responses in Neonates
2009
Background The communicative meaning of human areolae for newborn infants was examined here in directly exposing 3-day old neonates to the secretion from the areolar glands of Montgomery donated by non related, non familiar lactating women. Methodology/Principal Findings The effect of the areolar stimulus on the infants' behavior and autonomic nervous system was compared to that of seven reference stimuli originating either from human or non human mammalian sources, or from an arbitrarily-chosen artificial odorant. The odor of the native areolar secretion intensified more than all other stimuli the infants' inspiratory activity and appetitive oral responses. These responses appeared to deve…
Metabolic control of respiratory neuronal activity and the accompanying changes in breathing movements of the rabbit
1976
Expiratory-related neurons have been classified according to their phase relation within the respiratory cycle, their response to lung distension and collapse (α- and β-type), and to hyperventilation (tonic firing denoted by “+”, cessation of activity by “−”). The dorsal surface of the medulla oblongata was superfused with a metabolite-containing CSF solution and the activity of expiratory (E) and inspiratory-expiratory (IE) neurons was extracellularly recorded. The neuronal sub-types established by their functional behaviour could equally be distinguished by their differential response to one or several metabolites. In contrast to inspiratory (I) neurons, E − α , E + β , E − β and IE − β n…
Expired Tidal Volume and Respiratory Rate During Postnatal Stabilization of Newborn Infants Born at Term via Cesarean Delivery
2021
Objective To retrieve evolving respiratory measures in the first minutes after birth in normal neonates born at term using a respiratory function monitor. Study design We evaluated newborn babies delivered at term via cesarean after uncomplicated pregnancies. Immediately after birth, a respiratory function monitor with an adapted flowmeter and a face mask were applied at 2, 5, and 10 minutes after birth for 90 seconds in each period. We analyzed expired and inspired tidal volume, respiratory rate (RR), percentage of leakage, and number of analyzed breaths in each individual infant's recording using a respiratory research software. Results A total of 243 infants completed the study. The fina…
Monitorización no invasiva de los parámetros respiratorios al nacimiento: Evolución del volumen corriente espirado y la frecuencia respiratoria en lo…
2021
Objetivo: Definir los rangos de normalidad a través de un gráfico de percentiles para el volumen corriente espirado y la frecuencia respiratoria durante la estabilización postnatal en recién nacidos sanos a término (≥ de 37 semanas de gestación), nacidos por cesárea electiva, respirando espontáneamente, sin dificultad respiratoria y sin necesidad de reanimación, utilizando un monitor de función respiratoria, validado y no invasivo. Diseño del estudio: Se diseñó un estudio observacional prospectivo unicéntrico. El cual se llevó a cabo en el quirófano del servicio de Obstetricia del Hospital Universitario y Politécnico La Fe de Valencia. El muestreo fue no probabilístico de tipo consecutivo. …