The Effects of Laryngoscope Shape and Needle Position on Distal Airway Pressure in Jet Ventilation

2020 ◽  
Author(s):  
Joshua Pertile ◽  
Michelle Mellenthin ◽  
Jennifer Wagner ◽  
Emily M. DeBoer ◽  
Daniel Fink ◽  
...  
Keyword(s):  
Airway Pressure ◽  
Jet Ventilation ◽  
Needle Position ◽  
Distal Airway

scholarly journals Jet flow rate and needle position govern distal airway pressures during low‐frequency jet ventilation

2021 ◽  
Vol 6 (2) ◽  
pp. 244-251
Author(s):  
Joshua Pertile ◽  
Bradford Smith ◽  
Michelle Mellenthin ◽  
Jennifer Wagner ◽  
Emily M. DeBoer ◽  
...  
Keyword(s):  
Flow Rate ◽  
Low Frequency ◽  
Jet Flow ◽  
Jet Ventilation ◽  
Airway Pressures ◽  
Needle Position ◽  
Distal Airway

Effects of high-frequency jet ventilation on arterial baroreflex regulation of heart rate

1987 ◽  
Vol 63 (6) ◽  
pp. 2216-2222 ◽  
Author(s):  
J. J. Rouby ◽  
M. Houissa ◽  
J. F. Brichant ◽  
J. F. Baron ◽  
C. McMillan ◽  
...  
Keyword(s):  
Heart Rate ◽  
Arterial Pressure ◽  
High Frequency ◽  
Airway Pressure ◽  
Systolic Arterial Pressure ◽  
Right Atrial ◽  
Arterial Baroreflex ◽  
Mean Airway Pressure ◽  
Jet Ventilation ◽  
Pulmonary Volume

Fifteen anesthetized mechanically ventilated patients recovering from multiple trauma were studied to compare the effects of high-frequency jet ventilation (HFJV) and continuous positive-pressure ventilation (CPPV) on arterial baroreflex regulation of heart rate. Systolic arterial pressure and right atrial pressure were measured using indwelling catheters. Electrocardiogram (ECG) and mean airway pressure were continuously monitored. Lung volumes were measured using two linear differential transformers mounted on thoracic and abdominal belts. Baroreflex testing was performed by sequential intravenous bolus injections of phenylephrine (200 micrograms) and nitroglycerin (200 micrograms) to raise or lower systolic arterial pressure by 20–30 Torr. Baroreflex regulation of heart rate was expressed as the slope of the regression line between R-R interval of the ECG and systolic arterial pressure. In each mode of ventilation the ventilatory settings were chosen to control mean airway pressure and arterial PCO2 (PaCO2). In HFJV a tidal volume of 159 +/- 61 ml was administered at a frequency of 320 +/- 104 breaths/min, whereas in CPPV a tidal volume of 702 +/- 201 ml was administered at a frequency of 13 +/- 2 breaths/min. Control values of systolic arterial pressure, R-R interval, mean pulmonary volume above apneic functional residual capacity, end-expiratory pulmonary volume, right atrial pressure, mean airway pressure, PaCO2, pH, PaO2, and temperature before injection of phenylephrine or nitroglycerin were comparable in HFJV and CPPV. Baroreflex regulation of heart rate after nitroglycerin injection was significantly higher in HFJV (4.1 +/- 2.8 ms/Torr) than in CPPV (1.96 +/- 1.23 ms/Torr).(ABSTRACT TRUNCATED AT 250 WORDS)

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