Biphasic Cuirass Ventilation

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Cardiopulmonary Interactions after Fontan Operations Augmentation of Cardiac Output Using Negative Pressure Ventilation L.S. Shekerdemian, A. Bush, D.F. Shore, C. Lincoln, and A.N. Redington Department of Paediatrics Royal Brompton Hospital, London, UK METHODS AND RESULTS: "The hemodynamic effects of conversion from conventional intermittent positive pressure ventilation (IPPV) to cuirass negative pressure ventilation (NPV) [Hayek Oscillator] was investigated in nine acute postoperative Fontan patients on the pediatric intensive care unit and nine anesthetized patents undergoing cardiac catheterization in the convalescent phase after Fontan operations….. A brief period of NPV increased pulmonary blood flow from 2.4 to 3.5 L . min -1 . / m -2 with a mean increase of 42%. Pulmonary blood flow continued to improve, with a total increase of 54% after an extended period of NPV. Values fell toward baseline after reinstitution of IPPV. Heart rate was unchanged during NPV and the improvement in pulmonary blood flow was achieved by an increase in stroke volume from 25 mLm 2 to 37 mLm 2 . CONCLUSIONS: Through improvement of the stroke volume alone, NPV brought about a marked increase in the pulmonary blood flow and, hence, cardiac output of Fontan patients. An improvement in cardiac output of this order, and by this mechanism, is currently unmatched by any therapeutic alternatives." Circulation 1997:96: 3934-3942
Hemodynamic Effects of Different Modes of Mechanical Ventilation in Cardiac and Respiratory Failure: An Experimental Study G. Zobel*, D. Dacar** and S. Rodl* Department of Pediatrics* and Cardiac Surgery**, University of Graz, Austria Study was carried out on 12 pigs, to compare the hemodynamic effects of 4 different modes of Mechanical Ventilation in 3 stable conditions: normal, acute ventricular failure by -blocking agents and respiratory failure induced by repeated lung lavages. It was concluded that "ECG-triggered HFJV seems to have the best benefits on cardiac output during control conditions, whereas EOSC [the Hayek Oscillator] seems to have hemodynamic advantages in cardiac and respiratory failure conditions." Clinical Intensive Care Supplement to Vol. 4 No. 2 1993
Page 1 and 2:
Title slide Biphasic Cuirass Ventil
Page 3 and 4:
BCV Summary -Biphasic Cuirass Venti
Page 5 and 6:
Treating Respiratory Failure - Mech
Page 7 and 8:
Negative Pressure Ventilation Iron
Page 12 and 13: Negative Pressure Ventilation Inspi
Page 17 and 18: Negative Pressure Cuirass Ventilato
Page 20 and 21: The Rocking Bed
Page 22 and 23: Bi-Phasic Cuirass Ventilation (BCV)
Page 24 and 25: Negative Pressure Ventilation + + B
Page 26 and 27: EHFO AROUND NEGATIVE BASELINE
Page 28 and 29: 12 An increase in Mean (MNCP) leads
Page 30 and 31: 12 An increase in amplitude (span)
Page 32 and 33: External High Frequency Oscillation
Page 34 and 35: Hayek Oscillator; Experience in Int
Page 36: Chest Wall Oscillation in Acute Res
Page 39 and 40: Severe Tracheal Stenosis and Operat
Page 41 and 42: External High Frequency Ventilation
Page 43: External High Frequency Ventilation
Page 46 and 47: Use in Surgery and Post-Surgery
Page 48 and 49: Use of the Hayek Oscillator in a Ca
Page 50 and 51: External High-Frequency Oscillation
Page 52 and 53: The Use of the Hayek Oscillator dur
Page 54: The Effects of Positive and Negativ
Page 57: FONTAN OPERATION (Study 2) Methods(
Page 61: Negative-pressure Ventilation Impro
Page 65 and 66: Ventilation by external high-freque
Page 67 and 68: Biphasic Extrathoracic Pressure CPR
Page 69 and 70: BCV Summary -Biphasic Cuirass Venti
Page 78 and 79: Coronary MRA with synchronised resp
Page 80 and 81: Tube Velcro straps Cuirass Foam sea
Page 82 and 83: BCV Disadvantages • Can not be us
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Biphasic Cuirass Ventilation

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