Isogravimetric

We regulate the arterial inflow line and the venous outflow line back and forth until we have an isogravimetric or constant weight system.

In an isogravimetric (not losing or gaining weight) isolated perfused lung, pulmonary arterial and venous pressures, and pulmonary blood flow are measured.

The basic assumption made in determining an isogravimetric microvascular pressure is that the organ is in an isogravimetric state, neither gaining nor losing weight.