Relation between left atrial pressure and the corresponding pulse pressure in the helical flow total artificial heart

2013 ◽  
Author(s):  
Sheng-Yuan Wu ◽  
Itsuro Saito ◽  
Takashi Isoyama ◽  
Yusuke Inoue ◽  
Kohei Ishii ◽  
...  
Keyword(s):  
Pulse Pressure ◽  
Left Atrial ◽  
Artificial Heart ◽  
Helical Flow ◽  
Atrial Pressure ◽  
Left Atrial Pressure ◽  
Total Artificial Heart

Concept of left atrial pressure estimation using its pulsatile amplitude in the helical flow total artificial heart

2014 ◽  
Vol 17 (4) ◽  
pp. 301-307 ◽  
Author(s):  
Sheng-Yuan Wu ◽  
Itsuro Saito ◽  
Takashi Isoyama ◽  
Yusuke Inoue ◽  
Masami Sato ◽  
...  
Keyword(s):  
Left Atrial ◽  
Artificial Heart ◽  
Helical Flow ◽  
Atrial Pressure ◽  
Left Atrial Pressure ◽  
Total Artificial Heart ◽  
Pressure Estimation

scholarly journals LEFT ATRIAL PRESSURE CORRELATION WITH PERSISTENT IATROGENIC ATRIAL SEPTAL DEFECT AFTER MITRACLIP IMPLANTATION

2021 ◽  
Vol 77 (18) ◽  
pp. 1200
Author(s):  
Prince Sethi ◽  
Nikhil Parimi ◽  
Prakash Acharya ◽  
Amandeep Goyal ◽  
Emmanuel Daon ◽  
...  
Keyword(s):  
Atrial Septal Defect ◽  
Left Atrial ◽  
Septal Defect ◽  
Atrial Pressure ◽  
Left Atrial Pressure ◽  
Iatrogenic Atrial Septal Defect

scholarly journals The Effect of Furosemide on Left Atrial Pressure in Dogs with Mitral Valve Regurgitation

2011 ◽  
Vol 25 (2) ◽  
pp. 244-250 ◽  
Author(s):  
S. Suzuki ◽  
T. Ishikawa ◽  
L. Hamabe ◽  
D. Aytemiz ◽  
H. Huai-Che ◽  
...  
Keyword(s):  
Mitral Valve ◽  
Left Atrial ◽  
Mitral Valve Regurgitation ◽  
Atrial Pressure ◽  
Left Atrial Pressure ◽  
Valve Regurgitation

Relationship of Pulmonary Venous Flow Pattern to Mean Left Atrial Pressure and Phasic Pressure Change

Cardiology ◽  
1996 ◽  
Vol 87 (3) ◽  
pp. 224-229 ◽  
Author(s):  
Jer-Min Lin ◽  
Yi-Heng Li ◽  
Kwan-Lih Hsu ◽  
Juey-Jen Hwang ◽  
Yung-Zu Tseng
Keyword(s):  
Flow Pattern ◽  
Left Atrial ◽  
Pressure Change ◽  
Atrial Pressure ◽  
Left Atrial Pressure ◽  
Venous Flow ◽  
Pulmonary Venous Flow ◽  
Relationship Of

scholarly journals Continuous Left Atrial Pressure Monitoring During MitraClip

2015 ◽  
Vol 8 (7) ◽  
pp. e117-e119 ◽  
Author(s):  
Mackram F. Eleid ◽  
Saurabh Sanon ◽  
Guy S. Reeder ◽  
Rakesh M. Suri ◽  
Charanjit S. Rihal
Keyword(s):  
Left Atrial ◽  
Atrial Pressure ◽  
Left Atrial Pressure ◽  
Pressure Monitoring

Doppler echo evaluation of pulmonary venous-left atrial pressure gradients: human and numerical model studies

2000 ◽  
Vol 279 (2) ◽  
pp. H594-H600 ◽  
Author(s):  
Michael S. Firstenberg ◽  
Neil L. Greenberg ◽  
Nicholas G. Smedira ◽  
David L. Prior ◽  
Gregory M. Scalia ◽  
...  
Keyword(s):  
Numerical Modeling ◽  
Left Atrial ◽  
Atrial Pressure ◽  
Left Atrial Pressure ◽  
High Fidelity ◽  
Pressure Gradients ◽  
Bernoulli Equation ◽  
Venous Flow ◽  
Model Studies ◽  
Pulmonary Venous Flow

The simplified Bernoulli equation relates fluid convective energy derived from flow velocities to a pressure gradient and is commonly used in clinical echocardiography to determine pressure differences across stenotic orifices. Its application to pulmonary venous flow has not been described in humans. Twelve patients undergoing cardiac surgery had simultaneous high-fidelity pulmonary venous and left atrial pressure measurements and pulmonary venous pulsed Doppler echocardiography performed. Convective gradients for the systolic (S), diastolic (D), and atrial reversal (AR) phases of pulmonary venous flow were determined using the simplified Bernoulli equation and correlated with measured actual pressure differences. A linear relationship was observed between the convective ( y) and actual ( x) pressure differences for the S ( y = 0.23 x + 0.0074, r = 0.82) and D ( y = 0.22 x + 0.092, r = 0.81) waves, but not for the AR wave ( y = 0.030 x + 0.13, r = 0.10). Numerical modeling resulted in similar slopes for the S ( y = 0.200 x − 0.127, r = 0.97), D ( y = 0.247 x − 0.354, r= 0.99), and AR ( y = 0.087 x − 0.083, r = 0.96) waves. Consistent with numerical modeling, the convective term strongly correlates with but significantly underestimates actual gradient because of large inertial forces.

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