The temperature change in an endotracheal tube during high frequency ventilation using an artificial neonatal lung model with Babylog® 8000 plus

2013 ◽  
Vol 50 (2) ◽  
pp. 173-178 ◽  
Author(s):  
Ken Nagaya ◽  
Etsushi Tsuchida ◽  
Fumikatsu Nohara ◽  
Toshio Okamoto ◽  
Hiroshi Azuma
Keyword(s):  
Endotracheal Tube ◽  
Temperature Change ◽  
High Frequency ◽  
Lung Model ◽  
High Frequency Ventilation ◽  
Neonatal Lung ◽  
Frequency Ventilation

Resonant amplification of delivered volume during high-frequency ventilation

1986 ◽  
Vol 60 (3) ◽  
pp. 885-892 ◽  
Author(s):  
V. Brusasco ◽  
K. C. Beck ◽  
M. Crawford ◽  
K. Rehder
Keyword(s):  
Stroke Volume ◽  
Endotracheal Tube ◽  
High Frequency ◽  
Gas Flow ◽  
High Frequency Ventilation ◽  
Frequency Ventilation ◽  
Anesthetized Dogs ◽  
Gas Volume

The volume of gas delivered from a high-frequency ventilation (HFV) circuit was measured with an ultrasonic flowmeter. The measurements were done in vitro (20-liter air-filled glass bottle) and in vivo (9 anesthetized dogs lying supine) at oscillation frequencies ranging from 4 to 23 Hz and stroke volumes of the pump ranging from 36 to 150 ml. We varied the length and diameter of the tube connecting the pump with the endotracheal tube, the length and diameter of the bias outflow tube, the diameter of the endotracheal tube, and the stroke volume of the pump. Both in vitro and in vivo, there was resonant amplification of the delivered gas volume; i.e., the delivered gas volume exceeded the stroke volume at certain frequencies. Altering the dimensions of connecting tube, endotracheal tube, bias outflow tube, or stroke volume, i.e., changing the resistance to gas flow, gas compliance, and/or gas inertance in these elements, altered the ratio of gas delivered to stroke volume that could be predicted by an electric analog. These data indicate that the delivered gas volume during HFV depends critically on the configuration of the HFV circuit, the size of the endotracheal tube, the oscillation frequency, and the pump stroke volume. Knowledge of the delivered gas volume during HFV and appreciation of the phenomenon of resonant amplification of the delivered gas volume will permit a more accurate description of factors contributing to gas transport during HFV.

Pediatric endotracheal tube designed for high-frequency ventilation

1984 ◽  
Vol 12 (11) ◽  
pp. 988-993 ◽  
Author(s):  
LYLE H. HAMILTON ◽  
JOSEPH M. LONDINO ◽  
JOHN H. LINEHAN ◽  
JOSEF NEU
Keyword(s):  
Endotracheal Tube ◽  
High Frequency ◽  
High Frequency Ventilation ◽  
Frequency Ventilation

Pneumothorax and pulmonary intersticial emphysema: treatment with selective bronchial occlusion and high frequency ventilation

1998 ◽  
Vol 74 (5) ◽  
pp. 411-5 ◽  
Author(s):  
Marcus A.J. Oliveira ◽  
Antônio C. P. Ferreira ◽  
João S. Oliveira ◽  
José S. Oliveira ◽  
Yara G. Silva
Keyword(s):  
High Frequency ◽  
High Frequency Ventilation ◽  
Frequency Ventilation

THE EFFECT OF HIGH FREQUENCY VENTILATION ON THE / PATTERN IN DOGS WITH OLEIC ACID LUNG DAMAGE

1982 ◽  
Vol 57 (3) ◽  
pp. A89-A89
Author(s):  
E. L. Owens ◽  
T. S. Lee ◽  
B. D. Wright ◽  
S. Jakobson
Keyword(s):  
Oleic Acid ◽  
High Frequency ◽  
Lung Damage ◽  
High Frequency Ventilation ◽  
Frequency Ventilation
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