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Clinics in Perinatology, 2021
High-frequency ventilation (HFV) is an alternative to conventional mechanical ventilation, with theoretic benefits of less risk of ventilator lung injury and more effectivity in washout CO2. Previous clinical studies have not demonstrated advantages of HFV in preterm infants compared with conventional ventilation, so rescue HFV has been used when ...
Manuel, Sánchez-Luna +3 more
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High-frequency ventilation (HFV) is an alternative to conventional mechanical ventilation, with theoretic benefits of less risk of ventilator lung injury and more effectivity in washout CO2. Previous clinical studies have not demonstrated advantages of HFV in preterm infants compared with conventional ventilation, so rescue HFV has been used when ...
Manuel, Sánchez-Luna +3 more
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High frequency phonocardiography
The American Journal of Cardiology, 1961Abstract A systematic study of the high frequency components of the heart sounds and murmurs was made by means of a new standardized and calibrated phonocardiograph provided with a variable band pass filter. The frequency bands 500–1000 c.p.s. and higher were particularly studied but comparison was also made with the vibrations found in lower bands.
A A, LUISADA, G, DI BARTOLO
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The Journal of Pediatrics, 1984
Complete physiological understanding of HFV requires knowledge of four general classes of information: 1) the distribution of airflow within the lung over a wide range of frequencies and VT (sect. IVA), 2) an understanding of the basic mechanisms whereby the local airflows lead to gas transport (sect.
J M, Drazen, R D, Kamm, A S, Slutsky
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Complete physiological understanding of HFV requires knowledge of four general classes of information: 1) the distribution of airflow within the lung over a wide range of frequencies and VT (sect. IVA), 2) an understanding of the basic mechanisms whereby the local airflows lead to gas transport (sect.
J M, Drazen, R D, Kamm, A S, Slutsky
+7 more sources
Modern Physics Letters A, 2005
As a simple example of the "blurring" influence of noncommutative geometry, a noncommutative version of a high-frequency perturbation of a background metric is calculated. The relation between the principal null vectors of the wave and those of the induced symplectic structure is in this case particularly clear.
Burić, M., Madore, J.
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As a simple example of the "blurring" influence of noncommutative geometry, a noncommutative version of a high-frequency perturbation of a background metric is calculated. The relation between the principal null vectors of the wave and those of the induced symplectic structure is in this case particularly clear.
Burić, M., Madore, J.
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Seminars in Respiratory and Critical Care Medicine, 1998
High-frequency ventilation (HFV) provides respiratory gas exchange using positive airway pressure-driven tidal breaths that are often smaller than anatomic dead space and breathing frequencies several times faster than normal. Gas transport with HFV involves nonconvective mechanisms such as Taylor dispersion, coaxial flow, and augmented diffusion ...
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High-frequency ventilation (HFV) provides respiratory gas exchange using positive airway pressure-driven tidal breaths that are often smaller than anatomic dead space and breathing frequencies several times faster than normal. Gas transport with HFV involves nonconvective mechanisms such as Taylor dispersion, coaxial flow, and augmented diffusion ...
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Journal of Paediatrics and Child Health, 1997
Abstract:The 1990s have seen a dramatic resurgence of interest in high frequency ventilation (HFV). The role of HFV in the rescue of infants failing conventional mechanical ventilation (CMV) is now relatively well established. However, the wider role of HFV in the routine management of respiratory failure in the newborn is more contentious.
C A, Ramsden, J J, Pillow
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Abstract:The 1990s have seen a dramatic resurgence of interest in high frequency ventilation (HFV). The role of HFV in the rescue of infants failing conventional mechanical ventilation (CMV) is now relatively well established. However, the wider role of HFV in the routine management of respiratory failure in the newborn is more contentious.
C A, Ramsden, J J, Pillow
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2019
When the magnetic material is used as the high-frequency devices such as RF inductor, the domain walls do not move; so, a soft magnetic material with an uniaxial magnetic anisotropy is often used in the case. A magnetic field is applied in the direction of the hard axis, and magnetization rotation is used in the soft magnetic material.
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When the magnetic material is used as the high-frequency devices such as RF inductor, the domain walls do not move; so, a soft magnetic material with an uniaxial magnetic anisotropy is often used in the case. A magnetic field is applied in the direction of the hard axis, and magnetization rotation is used in the soft magnetic material.
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Pediatrics International, 1992
The current state of high frequency oscillation (HFO) in Japan is reviewed. The discussion is focused on the following: (i) the repeated application of short duration SI (sustained inflation) is effective in recruiting lung volume and increasing PaO2; (ii) HFO can prevent the formation of granulocytes related to lung injury; and (iii) HFO does not ...
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The current state of high frequency oscillation (HFO) in Japan is reviewed. The discussion is focused on the following: (i) the repeated application of short duration SI (sustained inflation) is effective in recruiting lung volume and increasing PaO2; (ii) HFO can prevent the formation of granulocytes related to lung injury; and (iii) HFO does not ...
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High-Frequency Percussive Ventilation
Critical Care Medicine, 2005To review the technique and clinical application of high-frequency percussive ventilation in critically ill patients.Literature search and descriptive review.High-frequency percussive ventilation is a time-cycled, pressure-limited mode of ventilation that delivers subphysiologic tidal volumes at rates that can exceed 500 breaths/min.
Ali, Salim, Matthew, Martin
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On high-frequency insulin oscillations
Ageing Research Reviews, 2008Insulin is released in a pulsatile manner, which results in oscillatory concentrations in blood. The oscillatory secretion improves release control and enhances the hormonal action. Insulin oscillates with a slow ultradian periodicity (approximately 140 min) and a high-frequency periodicity (approximately 6-10 min).
Schmitz, Ole +3 more
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