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Exit jet and recirculating flow pattern of pump

Video Author: Richard Malinauskas PhD
Published on: 03.27.2017
Associated with: ASAIO Journal. 63(2):150-160, March/April 2017

At test condition 5, the outlet jet in the exit diffuser was skewed toward the outer wall in all four data sets. This asymmetry created a large recirculation region near the inner wall of the pump diffuser. Video demonstrates the exit jet and recirculating flow pattern.

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Exit jet and recirculating flow pattern of pump
Creator: Richard Malinauskas PhD
Duration: 0:38
At test condition 5, the outlet jet in the exit diffuser was skewed toward the outer wall in all four data sets. This asymmetry created a large recirculation region near the inner wall of the pump diffuser. Video demonstrates the exit jet and recirculating flow pattern.
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Duration: 0:17
Washout of Valve 1 and Valve 2 at 5.1x10-3 m/s. The DBCS in Valve 2 washed out 47.5% faster than Valve 1.
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Top view topography map of Valve 1 vs. Valve 2
Creator: Pablo S Huang Zhang
Duration: 0:17
Top view of the intensity topography maps (i-Maps) depicting washout patterns of Valve 1 and Valve 2. The brighter color denotes higher DBCS concentrations, while the darker blue denotes lower or absence of DBCS. Note: The bright “sun-spot” that remains in the intensity plots after washout is a reflection artifact resulting from the microscope illumination.
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Exit jet and recirculating flow pattern of pump
Creator: Richard Malinauskas PhD
Duration: 0:38
Show More 
Show Less 
At test condition 5, the outlet jet in the exit diffuser was skewed toward the outer wall in all four data sets. This asymmetry created a large recirculation region near the inner wall of the pump diffuser. Video demonstrates the exit jet and recirculating flow pattern.
Play Video | + Favorites
Washout of Valve 1 and Valve 2
Creator: Pablo S Huang Zhang
Duration: 0:17
Show More 
Show Less 
Washout of Valve 1 and Valve 2 at 5.1x10-3 m/s. The DBCS in Valve 2 washed out 47.5% faster than Valve 1.
Play Video | + Favorites
Top view topography map of Valve 1 vs. Valve 2
Creator: Pablo S Huang Zhang
Duration: 0:17
Show More 
Show Less 
Top view of the intensity topography maps (i-Maps) depicting washout patterns of Valve 1 and Valve 2. The brighter color denotes higher DBCS concentrations, while the darker blue denotes lower or absence of DBCS. Note: The bright “sun-spot” that remains in the intensity plots after washout is a reflection artifact resulting from the microscope illumination.
Play Video | + Favorites
The contraction of a recellularized heart on days 2, 4, 6, and 8.
Creator: Ze-Wei Tao
Duration: 0:30
Show More 
Show Less 
The contraction of a recellularized heart on days 2, 4, 6, and 8
Play Video | + Favorites
Transapical guidewire and transcatheter heart valve
Creator: Andreas Schaefer
Duration: 0:06
Show More 
Show Less 
A transapical guidewire was inserted in the middle of the sewing ring, and the crimped 27 mm JenaValve (JenaValve Technology, GmbH, Munich, Germany) transcatheter heart valve (THV) was introduced and deployed into the AV annulus without prior balloon valvuloplasty.
Play Video | + Favorites
TVL and PVL
Creator: Andreas Schaefer
Duration: 0:03
Show More 
Show Less 
After balloon postdilation, fluoroscopy and echocardiography confirmed an adequate position and function of the THV without transvalvular (TVL) and trace paravalvular leakage (PVL).
Play Video | + Favorites
Partial inflow cannula obstruction
Creator: Deepak Acharya, MD
Duration: 0:18
Show More 
Show Less 
Inflow cannula abutting the posteromedial papillary muscle with partial inflow cannula obstruction clearly seen on reconstructed 4D cine of the cardiac CT data
Play Video | + Favorites
Cavity obliteration and cannula obstruction in systole
Creator: Deepak Acharya, MD
Duration: 0:11
Show More 
Show Less 
Gated CTA showed that the inflow cannula was trapped between the apical ventricular septum and an unusually hypertrophied lateral papillary muscle, resulting in cavity obliteration and cannula obstruction in systole
Play Video | + Favorites
Inflow cannula obstruction worsening
Creator: Deepak Acharya, MD
Duration: 0:10
Show More 
Show Less 
A repeat-gated CTA showing worsening of the inflow cannula obstruction.
Play Video | + Favorites
Systolic collapse of the interventricular septum
Creator: Deepak Acharya, MD
Duration: 0:11
Show More 
Show Less 
Systolic collapse of the interventricular septum over the cannula opening causing significantly more systolic obstruction.
Play Video | + Favorites
Cardiac MRI
Creator: Arun Krishnamoorthy, MD
Duration: 0:01
Show More 
Show Less 
Cardiac MRI demonstrating myocardial recovery
Play Video | + Favorites
Heparin concentration in a central venous catheter vs. time
Creator: Patrick M. McGah
Duration: 0:05
Show More 
Show Less 
Unsteady heparin concentration vs. time on a 2D plane through the center of a central venous catheter. The concentration is computed using a 3D computational fluid dynamics model. The simulated time of the movie is 1 second. Recall that 1 kg/m3 of heparin is about 500 U/mL
Play Video | + Favorites
Contrast-enhanced image of large apical thrombus.
Creator: Emil Missov, MD
Duration: 0:01
Show More 
Show Less 
Echocardiographic contrast improves the demarcation of the apical thrombus as a massive filling defect in the left ventricular cavity.
Play Video | + Favorites