Details

Autor(en) / Beteiligte

• Hanzelka, P
• Vasků, J
• Urbánek, P
• Urbánek, E

Titel

Determination of cardiac output of the artificial heart from the drive air flow

Ist Teil von

• Artificial organs, 1979-08, Vol.3 (3), p.277-278

Ort / Verlag

United States

Erscheinungsjahr

1979

Quelle

MEDLINE

Beschreibungen/Notizen

• An indication chamber, inserted between the right heart drive and the pump proper, was designed to provide continual measurement of the quantity of blood pumped by the pneumatic artificial heart. The flow is evaluated from the motion of a piston provided with a photoelectric transducer. The effect of compressibility of the drive gas on measurement accuracy is eliminated. The indication chamber provides for automatic replenishment of gas that escapes by diffusion and through minor leakage. During testing in an artificial circulation within the range of physiological conditions, measurement in accuracies did not exceed 5%.