IV fluid- Unit 3 Exam 3 Flashcards
What does the water in your body help do?
- Transport nutrients and oxygen to your cells
- Helps remove waste from your cells
- Medium in which electrolyte chemical reactions occur
- Regulate body temp
- Lubricates joints and membranes
- Provides medium in food digestion
What percentage of our bodies fluid is made up of water?
60 percent
True or false: Water is fluid in the body and is is more important to life than any other nutrient?
True
Fluids in our body are affected by what 3 factors?
- Age
- Gender
- Body fat
Do men or women have more body fluid due to more muscle mass?
Men
True or false: Women have a smaller percentage of fat and fat contains more water?
False- Women have a greater percentage of fat and fat contains little water. Affecting the fluids in our body
Do younger or older people have a higher percentage of body fluid?
Younger
True or false: Younger people have a lower percentage of body fluid than older people?
False: Younger people have a HIGHER percentage of body fluid than older people
True or false: Obese patients have less fluid than those who are thin because fat cells contain little water?
True
True or false: Skeleton (bone) has a lower water content?
True
Where is the highest amount of water found?
- Muscle
- Skin
- Blood
What is the most accurate way to measure fluid status in a person?
Daily weight
What is filtration?
- Movement of fluid (water) across cell membrane due to hydrostatic pressure
What is diffusion?
- Movement of solutes (substances/particles) from higher concentration to an area of lower concentrations resulting in equal distribution.
What is osmosis?
Fluid moves from areas with more fluid concentration (and fewer solutes) to areas with less fluid concentration (and more solutes)
Where is hydrostatic pressure generated?
- The cardiovascular system as blood is pumped through the body’s blood vessels
Filtration occurs when…
- Water and solutes are transported across the cell membrane as a result of hydrostatic pressure
The body’s way of trying to reach homeostasis is by doing what 3 things we learned about during this lecture?
- Filtration
- Diffusion
- Osmosis.
In diffusion, what moves? (DS)
Solutes
In osmosis, what moves? (OF)
Fluid
What is a semipermeable membrane?
Type of biological or synthetic, polymeric membrane that will allow certain molecules or ions to pass through it by osmosis.
What does osmotic balance mean?
- Osmotic balance is the CONTROL OF WATER AND ELECTROLYTE BLANCE IN THE BODY.
How does hydrostatic pressure work?
- Hydrostatic pressure is pressure excerpted by the pumping of the heart which is the pushing force that pushes fluids out of the heart
Normal movements of fluids through the capillary wall into the tissues deepened on what two forces?
- Hydrostatic pressure
2 Oncotic pressure
How does oncotic pressure work?
- Oncotic pressure AKA colloid osmotic pressure is the ‘pulling force’ pulling fluids from the surrounding tissues into the capillaries.
Oncotic pressure is the result of what?
- The difference in the concentration of solutes in the fluid inside the inside the capillaries as opposed to outside of them, because water will naturally seek a sate of balance in the concentration of solute (particles)
Oncotic pressure, think ___1___- pulling fluid in
?
Whenever the hydrostatic pressure is greater than oncotic pressure what will happen?
- Fluid will leave the capillaries
Whenever oncotic pressure is greater than the hydrostatic pressure fluid willl…
Enter the capillaries
What is third spacing?
- Condition where fluid accumulates in a pocket that is not serving a purpose.
What is ascites?
- Fluids in the abdominal cavity… peritonitis, pancreatitis
Third spacing usually occurs as a result of…..
- Increased permeability of the capillary membrane or decreased plasma colloid osmotic pressure
What are the main causes of edema?
- Long periods of standing or sitting. Sitting or standing for too long can cause extra fluid to build up in your feet, angles, lower legs,
- Venous insufficiency
- Chronic (long-term) lung diseases
4.CHF - Pregnancy (normal)
- Low levels of protien
Third spacing can occur from…
- Intentional obstruction
- Peritonitis
- Heart failure- if heart is not pumping well, not enough pushing fluid through capillary so get a build up of hydrostatic pressure which can also lead to edema.
- Liver failure
- Low albumin- lab value will be low
- Starvation- Low protein (albumin) in plasma so low oncotic pressure
60% of lean body weight = _____?
Water
2/3 (intracellular)
1/3 (extracellular)
5% blood plasma
What is edema?
An accumulation of interstitial fluid within the tissues
Extravascular fluid collection in the pleural cavity, pericardial cavity and peritoneal cavity are called what?
- Pleural cavity: hydrothorax
- Pericardial cavity: hydropericardium
- Peritoneal cavity: hydroperitonum or ascites.
What is anasarca?
Severe, generalized edema marked by profound swelling of subcutaneous tissues and accumulation of fluid in body cavities
sodium & potassium use ATP to move in & out of cells in a form of active transport called the ____-_____ _____?
Sodium-potassium pump
The bodies fluid is dived into 2 compartments called?
- ICF- Intracellular fluid
- ECF- extracellular fluid
Fluid found inside the cells is called what?
- Intracellular fluid (ICF)
ICF makes up how much of the bodies fluid?
- 2/3 of fluid
Fluid found outside of the cells is called what?
Extracellular fluid (ECF)
ECF makes up how much of the bodies fluid?
1/3 of fluid
To maintain balance or homeostasis fluids in the cells must be balanced with ___1___ fluid and fluids outside the cell must be balanced with ___2___ fluid.
- Extracellular
- Intracellular
Extracellular fluid can be divided into what 3 divisions
- Intravascular
- Interstitial
- Transcellular
What is intravascular fluid?
- Found in the vascular system that consists of arteries, veins, capillary networks. Intravascular fluid is WHOLE BLOOD volume and also includes red blood cells, white blood cells, plasma and platelets.
What is interstitial fluid?
- Fluid between cells (third space)
What is transcellular fluid?
- Cerebral spinal fluid, peritoneal and pleural fluid. Each of the fluid compartments is separated by a selective permeable membrane that permits movement of water and some solutes. Small molecules like urea and water move freely between compartments but certain substances, like protein do not cross readily.
Osmolality is measured in
MilliOsmols/kg
What is osmolality used for?
- Used to assess body’s state of water balance
What could a high osmolality indicate
Water deficit
What could a low osmolality indicate?
Water excess
How is osmolaRity measured?
MilliOsmos/L
What is the normal osmolaRity range?
- 270-300 mOsm/L
What is an osmole?
Amount of substance that dissociates in solution to form one mole of osmotically active particles
Concentration of solution is measured in…
Osmoles
OsmolaRity evaluates serum and urine in clinical practice. A high osmolaRity of using = what?
Concentrated urine
True or false: fluids, nutrients and waste products constantly shift within the body’s compartments- from the cells to the interstitial spaces, to the blood vessels and back again?
True
True or false: it isn’t important to keep track of shifts of fluids when caring for patients?
False
What are three types of osmotic conditions
- Isotonic
- Hypotonic
- Hypertonic
What should we know about our Isotonic fluids?
- Isotonic fluids have the same solute concentration as we do in our blood.
- NO SHIFTs occur because the solutions are equally concentrated
Normal saline (0.9% NaCl) is what type of fluid and why?
- Isotonic due to the same concentration of sodium in the blood
What should we know about our hypotonic fluids?
- Less concentrated than other solutions; fluid pulled or moved from the bloodstream (veins) into the cells causing them to swell
Hypotonic fluids cause what to happen?
Cells to swell
HYPO… HYPO….HYPO offf to the …..
Cells we go
What should we know about our hypertonic fluids?
- More concentrated than other solutions: fluid pulled from the cell into the blood stream = shirnk… a solution that contains more dissolved particles (such as salt and other electrolytes) than is found in the normal cells of the body
MORE OR LESS:
Hypotonic solutions have ______ solutes and _____ solvent while hypertonic solutions have _____ solutes and____solvents
- Less
- More
- More
- Less