Passive Leg Raise Induced Stroke Volume Changes in Elderly Prior to Elective Surgery Measured by LiDCOplusTM

Passive Leg Raise Induced Stroke Volume Changes in Elderly Prior to Elective Surgery Measured by LiDCOplusTM to Guide Fluid Therapy

This is a pilot study to investigate whether patients at advanced age are fluid responders via a reversible fluid challenge, the passive leg raise test. This will be measured with a non-invasive cardiac output monitor, the LiDCO (LiDCO Hemodynamic monitoring) .

The intervention is as simple as a passive leg raise with measurement of effect on Stroke volume.

Inclusion Criteria:

• patients ≥80 years of age, undergoing elective urologic surgical procedure

Exclusion Criteria:

• age <80 years, severe aortic insufficiency, first case of the day on the operation program, unavailability of research personnel and contraindication to Lithium.