Admin Table of Contents
- 1 How does concentration affect the rate of osmosis?
- 2 What factors determine the rate and direction of osmosis quizlet?
- 3 What are the factors affecting osmosis?
- 4 In what direction is the net movement of water?
- 5 Can Salt take in oxygen?
- 6 How much fluid does a 50 kg patient need?
- 7 How to calculate the concentration of a solution?
- 8 What happens when you give a patient a hypotonic solution?
How does concentration affect the rate of osmosis?
Concentration gradient – The movement of osmosis is affected by the concentration gradient; the lower the concentration of the solute within a solvent, the faster osmosis will occur in that solvent. Light and dark – They are also factors of osmosis; since the brighter the light, the faster osmosis takes place.
What factors determine the rate and direction of osmosis quizlet?
the concentration of water determines the direction in which molecules will move during osmosis. the point at which water molecules enter and leave a cell at the same rate. the concentration inside and outside of the cell are equal.
How does the concentration of salt in water affect the rate of osmosis?
Salt triggers osmosis by attracting the water and causing it to move toward it, across the membrane. If the concentration of salt inside a cell is the same as the concentration of salt outside the cell, the water level will stay the same, creating an isotonic solution.
What are the factors affecting osmosis?
The factors affecting the rate of osmosis include:
- Pressure.
- Temperature.
- Surface Area.
- Water Potential.
- Concentration gradient.
In what direction is the net movement of water?
The net movement of water (osmosis) is in the direction of increased solute concentrations. An easy way to visualize this rule is simply that the net water movement is from an area of high water concentration (little dissolved solute) to an area of low water concentration (high levels of solute).
How can you determine the best concentration of solutes to give a patient?
How would you determine the best concentration of solutes to give a patient in need of fluids before you introduced the fluids into the patient’s body? Measure the tonicity or water potential of blood.
Can Salt take in oxygen?
The solubility of oxygen in water is dependent on salinity, while the partial pressure and the % saturation of oxygen is not affected by changes in salinity. Increasing the salt concentration leads to a decrease in oxygen solubility.
How much fluid does a 50 kg patient need?
For example, a 50 kg patient would require 2100 mL/day (1500 + 20*30). Let’s make it easy and say patient requires ~2 L/day. How much fluid the patient needs may also depend on sodium status and comorbidities. Fluid status is difficult to assess – but this is generally a decent first start to determine maintenance fluids.
When to start a patient on total parenteral nutrition?
If a patient is only going to be without enteral nutrition for a couple of days, then they do not need PN. Basically, don’t start PN in the first week of treatment even if you can’t get enteral access. It’s just too risky if the patient is not malnourished.
How to calculate the concentration of a solution?
To find the mg/ml: Step 1 Write down the amount of drug added as the numerator Step 2 Write down the volume of the solution in the denominator Step 3 Perform the math Step 1 500 mg Step 2 2 mg ml = 250 ml Step 3 Nsg 231 Calculating IV Solution Concentration
What happens when you give a patient a hypotonic solution?
If you want to understand what happens when you give a patient a hypotonic solution, it all comes down to osmosis and diffusion. Since hypotonic solutions have less “stuff” (my unofficial term for solute…) in them, their immediate effect on the body is going to be to dilute the blood stream.