A patient is to be given a blood transfusion. The blood is to flow through a tube from a raised bottle at atmospheric pressure to a needle inserted in the vein which the pressure is 18 mmHg higher than atmospheric. The inside diameter of the 3.2 cm long needle is 0.603 mm and the required flow rate is 4.2 mL per minute. How high should the bottle be placed above the needle? For blood, n = 0.0040 Pa-s and p = 1050 kg/m³. Take g = 9.8 m/s².

A patient is to be given a blood transfusion. The blood is to flow through a tube from a raised bottle at atmospheric pressure to a needle inserted in the vein which the pressure is 18 mmHg higher than atmospheric. The inside diameter of the 3.2 cm long needle is 0.603 mm and the required flow rate is 4.2 mL per minute. How high should the bottle be placed above the needle? For blood, n = 0.0040 Pa-s and p = 1050 kg/m³. Take g = 9.8 m/s².

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter14: Fluid Mechanics

Section: Chapter Questions

Problem 57P: How tall must be to measure blood pressure as high as 300 mm Hg?

See similar textbooks

Similar questions

(a) Verify that a 19.0% decrease in laminar flow through a tube is caused by a 5.00% decrease in radius, assuming that all other factors remain constant. (b) What increase in flow is obtained from a 5.00% increase in radius, again assuming all other factors remain constant?
(a) Convert normal blood pressure readings of 120 over 80 mm Hg to newtons per meter squared using be relationship for pressure due to the weight of a fluid (p=hg) rater a conversion factor. (b) Explain why be blood pressure of an infant would likely be smaller than that of an adult. Specifically, consider the smaller height to which blood mast be pumped.
How tall must a water-filled manometer be to measure blood pressures as high as 300 mm Hg?
The human circulation system has approximately 1109 capillary vessels. Each vessel has a diameter of about 8 m. Assuming cardiac output is 5 L/min, determine the average velocity of blood flow through each capillary vessel.
In an immersion measurement of a woman's density, she is found to have a mass of 62.0 kg in air an apparent mass of 0.0850 kg completely submerged with lungs empty. (a) What of water does she displace? (b) What is her volume? (c) Calculate her density. (d) If her lung capacity is 1.7S L, is she able to that without treading water with her lungs filled air?
The left ventricle of a resting adult's heart pumps blood at a flow rate of 83.0 cm3/s , increasing its pressure by 110 mm Hg, its speed from zero to 30.0 cm/s, and its height by 5.00 cm. (All cumbers are averaged over the entire heartbeat) Calculate the total power output of left ventricle. Note that most of the power is used to increase blood pressure.
A small artery has a length of 1.1103m and a radius of 2.55105m . If the pressure drop across the artery is 1.3 kPa, what is the flow rate through artery? (Assume Eat the temperature 37°C)
What is the greatest average speed of blood flow at 37° C in an artery of radius 2.00 mm if the flow is to remain laminar? What is the corresponding flow rate? Take the density of blood to be 1025 kg/m3.
A large storage tank with an open top is filled to a height h0. The tank is punctured at a height h above the bottom of the tank (Fig. P15.39). Find an expression for how far from the tank the exiting stream lands. Figure P15.39
Liquid toxic waste with a density of 1752 kg/m3 is flowing through a section of pipe with a radius of 0.312 m at a velocity of 1.64 m/s. a. What is the velocity of the waste after it goes through a constriction and enters a second section of pipe with a radius of 0.222 m? b. If the waste is under a pressure of 850,000 Pa in the first section of pipe, what is the pressure in the second (constricted) section of pipe?
What fraction of ice is submerged when it floats in freshwater, given the density of water 0°C is very close to 1000 kg/m3?
What must be the contact area between a suction cup (completely evacuated) and a ceiling if the cup is to support the weight of an 80.0-kg student?