characteristics of the ideal blood pump
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Characteristics Of The Ideal Blood Pump. Low Priming Volume Durable/ No mechanical failures Easy to set up and operate No Hemolysis Or damage to the other formed elements of the blood Antithrombogenic No anticoagulation required. BLOOD PUMPS. ROLLER PUMP. - PowerPoint PPT PresentationTRANSCRIPT
Characteristics Of The Ideal Blood Pump
Low Priming Volume
Durable/ No mechanical failures
Easy to set up and operate
No Hemolysis Or damage to the other formed elements of the
blood
AntithrombogenicNo anticoagulation required
BLOOD PUMPS
ROLLER PUMP
Roller Pumps in ECMO
Roller Pumps with Venous Reservoir dominated the US market.
Roller pumps predated Centrifugal.
Centrifugal Pumps becoming more widely used because of technology improvements.
New Centrifugal pumps have no shafts, seals or bearings.
Non Positive Displacement Centrifugal PumpFlow affected by :
Preload: CVP, Cannula/Tubing Dia, Hct
Afterload: MAP, Cannula/Tubing Dia, Hct,
Circuit Resistance
Size of pump
RPM’s
Blood Flow Monitoring for BioMedicus Pump
Pump RPM’s does not give absolute blood flow only correlates with flow.
In line Ultrasonic Flow Probe is used to monitor blood flow.
Ultra sonic Flow MeasurementFlow probe bounces ultra sound off of red cells and determines rate of flow from the Doppler shift created by the movement of the red cells. Computer converts rate of flow to volume of flow (per unit of time or mls/min). By knowing rate of flow and diameter of tubing indexed to the tubing diameter by the proper sized flow probe.