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At the hospital, a patient often receives fluids via an intravenous (IV) infusion. A bag of the fluid is held at a fixed height above the patient’s body. The fluid then travels down a large-diameter, flexible tube to a catheter—a short tube with a small diameter— inserted into the patient’s vein. 1.0 L of saline solution, with a density of 1020 kg/m3 and a viscosity of 1.1 × 10-3 Pa ⋅ s, is to be infused into a patient in 8.0 h. The catheter is 30 mm long and has an inner diameter of 0.30 mm. The pressure in the patient’s vein is 10 mm Hg. How high above the patient should the bag be positioned to get the desired flow rate?

At the hospital, a patient often receives fluids via an intravenous (IV) infusion. A bag of the fluid is held at a fixed height above the patient’s body. The fluid then travels down a large-diameter, flexible tube to a catheter—a short tube with a small diameter— inserted into the patient’s vein. 1.0 L of saline solution, with a density of 1020 kg/m3 and a viscosity of 1.1 × 10-3 Pa ⋅ s, is to be infused into a patient in 8.0 h. The catheter is 30 mm long and has an inner diameter of 0.30 mm. The pressure in the patient’s vein is 10 mm Hg. How high above the patient should the bag be positioned to get the desired flow rate?

Phlebotomy Essentials
Phlebotomy Essentials
6th Edition
ISBN:9781451194524
Author:Ruth McCall, Cathee M. Tankersley MT(ASCP)
Publisher:Ruth McCall, Cathee M. Tankersley MT(ASCP)
Chapter1: Phlebotomy: Past And Present And The Healthcare Setting
Section: Chapter Questions
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At the hospital, a patient often receives fluids via an intravenous (IV) infusion. A bag of the fluid is held at a fixed height above the patient’s body. The fluid then travels down a large-diameter, flexible tube to a catheter—a short tube with a small diameter— inserted into the patient’s vein. 1.0 L of saline solution, with a density of 1020 kg/m3 and a viscosity of 1.1 × 10-3 Pa ⋅ s, is to be infused into a patient in 8.0 h. The catheter is 30 mm long and has an inner diameter of 0.30 mm. The pressure in the patient’s vein is 10 mm Hg. How high above the patient should the bag be positioned to get the desired flow rate?

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