At the hospital, a patient often receives fluids via an intravenous (IV) infusion. A bag of...
At the hospital, a patient often receives fluids via an intravenous (IV) infusion. A bag of 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 veins. 1.0 L of saline solution, with a density 1020 kg/m3 and a viscosity of 1.1 x 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 20 mm Hg.
(a) Convert the pressure at the other end of the patient’s vein into Pascals.
(b) Calculate the desired flow rate in m3 /s.
(c) Calculate the pressure difference needed between the ends of the tube to produce the desired flow rate.
(d) Calculate the fluid pressure at the other end of the catheter. (e) Calculate the elevation of the bag above the patient’s arm.
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At the hospital, a patient often receives fluids via an
intravenous (IV) infusion. A bag of...
ant que 8. An advantage of using an infusion control device to deliver intravenous fluids is...
ant que 8. An advantage of using an infusion control device to deliver intravenous fluids is that A. the patient can be ambulatory B. the patient does not need to be monitored C. aseptic technique is not necessary for catheter Insertion D. the height of the fluid bag will not affect the infusion rate
A patient in the hospital is receiving a saline solution through a needle in their arm....
A patient in the hospital is receiving a saline solution through a needle in their arm. The needle is 2.20 cm long, horizontal, with one end in a vein in the arm, and the other end attached to a wide tube that extends down from the bag of solution, which hangs from a pole so that the fluid level is 90.0 cm above the needle. The inner radius of the needle is 0.250 mm. The top of the fluid is...
2. A liquid medicine is injected into a patient from an IV bag elevated h =...
2. A liquid medicine is injected into a patient from an IV bag
elevated h = 0.800 m above the needle, see figure. The needle is
placed horizontally. The needle is 3.00 cm in length and 0.400 mm
in diameter. Assume the average gauge pressure inside the vein is
1.28 103 Pa; the viscosity of the medicine is 2.00 103 Pas;
and the density of the medicine is 1.05 103 kg/m3. (1) Calculate
the pressure difference between the...
An intravenous drip bag has a volume of, 500 cm3 (0.5 ml). Assume it empties through...
An intravenous drip bag has a volume of, 500 cm3 (0.5 ml). Assume it empties through a 20-gauge needle (diameter of about 0.6mm) with a length of 2 inches (5.08 cm) and we want it to empty in 30 minutes. How high must the bag be hung? Assume the viscosity of the fluid is 0.005 Pa s, the density of water is 1000 kg m-3, and the pressure in the vein is 20 mm-Hg (or 2666 Pa gauge pressure).
The human brain and spinal cord are immersed in the cerebrospinal fluid. The fluid is normally...
The human brain and spinal cord are immersed in the
cerebrospinal fluid. The fluid is normally continuous between the
cranial and spinal cavities and exerts a pressure of 100 to 200 mm
of H2O above the prevailing atmospheric pressure. In
medical work, pressures are often measured in units of mm of
H2O because body fluids, including the cerebrospinal
fluid, typically have nearly the same density as water. The
pressure of the cerebrospinal fluid can be measured by means of a...
A liquid medicine is injected into a patient from an IV bag elevated h = 0.800...
A liquid medicine is injected into a patient from an IV bag elevated h = 0.800 m above the needle, see figure. The needle is placed horizontally. The needle is 3.00 cm in length and 0.400 mm in diameter. Assume the average gauge pressure inside the vein is 1.28 x 10^3 Pa; the viscosity of the medicine is 2.00 x 10^-3 Pa*s; and the density of the medicine is 1.05 x 10^3 kg/m^3 . (1) Calculate the pressure difference between...
A liquid medicine is injected into a patient from an IV bag elevated h-0.800 m above...
A liquid medicine is injected into a patient from an IV bag elevated h-0.800 m above the needle, see figure. The needle is placed horizontally. The needle is 3.00 cm in length and 0.400 mm in diameter. Assume the average gauge pressure inside the vein is 1.28 x 103 Pa; the viscosity of the medicine is 2.00 10-3 Pa-s; and the density of the medicine is 1.05x 103 kg/m. (1) Calculate the pressure difference between the input and output of...
Part F: Intravenous and Infusion Calculations continued An IV flow rate consists of the number otf...
Part F: Intravenous and Infusion Calculations continued An IV flow rate consists of the number otf cc/hour. Calculate the flow rate that a 1000 c IV solution infuses over an 8-hour period. 6. 7. Considering an IV flow rate in cc/hour, calculate the flow rate of the same 1000 ac IV solution infusing over a period of 6 hours. 8. The drop factor (gtts/cc) is the number of drops it takes to equal 1 cc for specific tubing in intravenous...
A patient is to be given a blood transfusion. The blood is to flow through a...
A patient is to be given a blood transfusion. The blood is to flow through a tube from a raised bottle to a needle inserted in the vein (Figure 1). The inside diameter of the 34 mm long needle is 0.90 mm , and the required flow rate is 3.2 cm3 of blood per minute. How high h should the bottle be placed above the needle? Use ρblood = 1.05×103kg/m3, ηblood = 4.0×10−3Pa⋅s. Assume the blood pressure is 66 torr...
FLUIDS QUESTION ?Blood from a supine patient flowing through the internal carotid artery is measured to...
FLUIDS QUESTION
?Blood from a supine patient
flowing through the internal carotid artery is measured to be
42.6 cm/s. The base of the artery measures 4.85 mm and the blood
pressure at this point is
92.56 mmHg. There is an aneurysm in the vessel with a diameter
measuring 16.1 mm. The
density of the patient’s whole blood was determined to be 1.04 x
10
3
kg/m
3
. Assuming
steady-state, inviscid flow (in large diameter vessels) and no
hydrostatic effects,...
ant que 8. An advantage of using an infusion control device to deliver intravenous fluids is that A. the patient can be ambulatory B. the patient does not need to be monitored C. aseptic technique is not necessary for catheter Insertion D. the height of the fluid bag will not affect the infusion rate
A patient in the hospital is receiving a saline solution through a needle in their arm. The needle is 2.20 cm long, horizontal, with one end in a vein in the arm, and the other end attached to a wide tube that extends down from the bag of solution, which hangs from a pole so that the fluid level is 90.0 cm above the needle. The inner radius of the needle is 0.250 mm. The top of the fluid is...
2. A liquid medicine is injected into a patient from an IV bag
elevated h = 0.800 m above the needle, see figure. The needle is
placed horizontally. The needle is 3.00 cm in length and 0.400 mm
in diameter. Assume the average gauge pressure inside the vein is
1.28 103 Pa; the viscosity of the medicine is 2.00 103 Pas;
and the density of the medicine is 1.05 103 kg/m3. (1) Calculate
the pressure difference between the...
The human brain and spinal cord are immersed in the
cerebrospinal fluid. The fluid is normally continuous between the
cranial and spinal cavities and exerts a pressure of 100 to 200 mm
of H2O above the prevailing atmospheric pressure. In
medical work, pressures are often measured in units of mm of
H2O because body fluids, including the cerebrospinal
fluid, typically have nearly the same density as water. The
pressure of the cerebrospinal fluid can be measured by means of a...
A liquid medicine is injected into a patient from an IV bag elevated h-0.800 m above the needle, see figure. The needle is placed horizontally. The needle is 3.00 cm in length and 0.400 mm in diameter. Assume the average gauge pressure inside the vein is 1.28 x 103 Pa; the viscosity of the medicine is 2.00 10-3 Pa-s; and the density of the medicine is 1.05x 103 kg/m. (1) Calculate the pressure difference between the input and output of...
Part F: Intravenous and Infusion Calculations continued An IV flow rate consists of the number otf cc/hour. Calculate the flow rate that a 1000 c IV solution infuses over an 8-hour period. 6. 7. Considering an IV flow rate in cc/hour, calculate the flow rate of the same 1000 ac IV solution infusing over a period of 6 hours. 8. The drop factor (gtts/cc) is the number of drops it takes to equal 1 cc for specific tubing in intravenous...
FLUIDS QUESTION
?Blood from a supine patient
flowing through the internal carotid artery is measured to be
42.6 cm/s. The base of the artery measures 4.85 mm and the blood
pressure at this point is
92.56 mmHg. There is an aneurysm in the vessel with a diameter
measuring 16.1 mm. The
density of the patient’s whole blood was determined to be 1.04 x
10
3
kg/m
3
. Assuming
steady-state, inviscid flow (in large diameter vessels) and no
hydrostatic effects,...
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