Energetics and Hemodynamic Changes of Normal and Various Right Heart Bypass (Fontan) Circulations in Lambs under Varying Respiration Parameters

2005 ◽  
Author(s):  
M.E. Ketner ◽  
C.L. Lucas ◽  
M.R. Mill ◽  
B. Sheridan ◽  
W. Lucas
Keyword(s):  
Hemodynamic Changes ◽  
Right Heart ◽  
Right Heart Bypass ◽  
Respiration Parameters ◽  
Heart Bypass

scholarly journals Clinical Experience of Right Heart Bypass Using Heparin-coated Tube and Roller Pump System.

1992 ◽  
Vol 21 (5) ◽  
pp. 510-514
Author(s):  
Hajime OHZEKI ◽  
Satosi NAKAZAWA ◽  
Akira SAITO ◽  
Hisanaga MORO ◽  
Hirofumi OKAZAKI ◽  
...  
Keyword(s):  
Clinical Experience ◽  
Right Heart ◽  
Pump System ◽  
Roller Pump ◽  
Right Heart Bypass ◽  
Heart Bypass

Quantitation of anterior descending vs. circumflex venous drainage in the canine great cardiac vein and coronary sinus

1978 ◽  
Vol 234 (2) ◽  
pp. H163-H166 ◽  
Author(s):  
H. K. Nakazawa ◽  
D. L. Roberts ◽  
F. J. Klocke
Keyword(s):  
Indocyanine Green ◽  
Coronary Sinus ◽  
Venous Drainage ◽  
Right Heart ◽  
Great Cardiac Vein ◽  
Indocyanine Green Dye ◽  
Right Heart Bypass ◽  
Heart Bypass

The fractions of left anterior descending (LAD) and circumflex (LC) inflow drainage into the canine great cardiac vein (GCV) and coronary sinus (CS) have been quantitated by use of a right heart bypass preparation in which GCV outflow was isolated from the remainder of CS outflow. Following direct LAD injection of indocyanine green dye (ICG), 63 +/- 8% (SD) of the total amount of dye recovered appeared in GCV outflow and the remainder in CS outflow. CS recovery of ICG was decreased appreciably by ligation of epicardial venous connections between the LAD and LC beds, but was not affected by selective reductions of LAD or LC inflow. Only 3 +/- 3% of ICG injected into the LC was recovered in GVC outflow under basal conditions, and these low values were not affected measurably by selective reductions of LAD or LC inflow. CS drainage of LAD inflow could be augmented by selective increments of GCV pressure exceeding 7-10 mmHg. Increments of LC drainage in GCV outflow required CS pressures that exceeded GCV pressures by greater than 10 mmHg.

A Tribute to the Pioneers of Right Heart Bypass: An Historical Review

2020 ◽  
Vol 11 (2) ◽  
pp. 198-203
Author(s):  
Giovanni Stellin
Keyword(s):  
Clinical Practice ◽  
Energy Loss ◽  
Historical Review ◽  
Canine Model ◽  
Right Heart ◽  
Cavopulmonary Anastomosis ◽  
The Right ◽  
Right Heart Bypass ◽  
Initial Concept ◽  
Heart Bypass

Cavopulmonary anastomosis was first described by Carlon, Mondini, De Marchi in a canine model in 1951 and later, in the clinical practice, by Glenn in 1958. Total right heart bypass was first introduced by Fontan and Kreutzer in 1971, in each instance as treatment for tricuspid atresia. Several modifications of such a procedure followed the initial concept of the right atrium as a pumping chamber, including modifications aimed to minimize energy loss at the anastomotic level and arrhythmias. Tribute is given to our pioneers who developed such an operation aimed to treat any child with functionally univentricular hearts.

Refined anaesthesia for implantation of engineered experimental aortic valves in the pulmonary artery using a right heart bypass in sheep

2006 ◽  
Vol 40 (4) ◽  
pp. 341-352 ◽  
Author(s):  
S Schauvliege ◽  
K Narine ◽  
S Bouchez ◽  
D Desmet ◽  
V Van Parys ◽  
...  
Keyword(s):  
Pulmonary Artery ◽  
Aortic Valves ◽  
Right Heart ◽  
Right Heart Bypass ◽  
Heart Bypass

Alveolar dead space, alveolar shunt, and transpulmonary pressure

1965 ◽  
Vol 20 (5) ◽  
pp. 816-824 ◽  
Author(s):  
J. M. Workman ◽  
R. W. B. Penman ◽  
B. Bromberger-Barnea ◽  
S. Permutt ◽  
R. L. Riley
Keyword(s):  
Dead Space ◽  
Pulmonary Ventilation ◽  
Transpulmonary Pressure ◽  
Lung Model ◽  
Pulmonary Perfusion ◽  
Alveolar Dead Space ◽  
Right Heart ◽  
Gradient Distribution ◽  
Right Heart Bypass ◽  
Heart Bypass

The effect of transpulmonary pressure (Ptp) on gas exchange in the dog lung was studied in 10 open-chested dogs. Rates of pulmonary perfusion and ventilation were held constant (right heart bypass and pump respirator) while Ptp was varied. Alveolar dead space ventilation and alveolar shunt perfusion were calculated from CO2 and O2 gradients. The results are finally expressed in terms of a three-compartment lung model. It is shown that a misinterpretation is possible if alveolar dead space or alveolar shunt compartments are expressed as fractions, respectively, of all ventilated or all perfused alveoli, therefore each has been expressed as a fraction of the whole lung. It is concluded that the alveolar shunt compartment decreased as Ptp was increased, over the lower range of Ptp studied. No significant change was detected in the alveolar dead space compartment, as Ptp was varied. alveolar-arterial O2 gradient; anatomical dead space; arterial-alveolar CO2 gradient; distribution of pulmonary perfusion; distribution of pulmonary ventilation; right heart bypass preparation; ventilation/perfusion relationships Submitted on February 16, 1965

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