Question

Saline solution is delivered into the vein of a patient through a needle. The saline solution has a viscosity of 0.00037 Pa.s, a density of 1,060 kg/m3, and is delivered through a 7.0-cm long needle with an internal diameter of 0.24 mm directly into the patient’s vein in which the blood pressure is 130 mmHg (1 mmHg=133.4 Pa). The saline solution must be delivered at a flow rate of 0.04×10-6 m3/s. How high must the saline solution be suspended in order to achieve this flow rate? Assume acceleration due to gravity is 9.81 m/s2.

Answer 1