RESONANT AMPLIFICATION DURING HIGH FREQUENCY OSCILLATION
نویسندگان
چکیده
منابع مشابه
Volume delivery during high frequency oscillation.
AIM To examine the delivered volume during "high volume strategy" high frequency oscillation, used as rescue treatment in preterm infants; and to identify factors, other than frequency and oscillatory amplitude, influencing the magnitude of volume delivery. METHOD Twenty infants (median gestational age 29 weeks) were studied on 45 occasions. Two oscillator types were used (SensorMedics and SL...
متن کاملHigh frequency oscillation.
It is more than 15 years since high frequency oscillatory ventilation (HFOV) was first described as a technique of ventilation [ 1 ]. In the intervening period it has passed through a phase of being a physiological curiosity, where it could be demonstrated that normal gas exchange could be maintained using tidal volumes much smaller than deadspace at rates much greater than what was then consid...
متن کاملHaemodynamic changes during high frequency oscillation for respiratory distress syndrome.
In a crossover trial left ventricular output (LVO), cerebral blood flow velocity (CBFV), and resistance index (RI) of the anterior cerebral artery were compared using Doppler ultrasonography, in eight preterm infants with respiratory distress syndrome (RDS) during conventional mechanical ventilation and high frequency oscillation. LVO was 14% to 18% lower with high frequency oscillation. There ...
متن کاملHigh-frequency oscillation in adolescents.
BACKGROUND High-frequency oscillation (HFO) is a widely used lung-protective ventilatory strategy in paediatric and neonatal acute lung injury. Its safe and effective use has been hindered by inadequate recruitment of the lung during oscillation and, until recently, the lack of an adequately powered oscillator for use in adult practice. METHODS We present data from three adolescents with seve...
متن کاملEffect of oral high frequency oscillation.
Laros et al. state probably on the basis of experience in one patient that oral high frequency oscillation (OHFO) combined with forced expiration manoeuvres on tracheobronchial clearance is disappointing in patients with flaccid lungs. Their letter to the editor suggests that our conclusions, meaning that OHFO combined with forced expiration manoeuvres is inefficient, could not be made because ...
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ژورنال
عنوان ژورنال: British Journal of Anaesthesia
سال: 1989
ISSN: 0007-0912
DOI: 10.1093/bja/63.7.112