Fluid & Electrolyte Balance Flashcards
acid-base imbalance within the body that results from base deficit in the blood
Acidosis
acid-base imbalance within the body that results from base excess in the blood
Alkalosis
energy-requiring movement of electrolytes or other substances across cell membranes against a concentration gradient
Active Transport
hormone that regulates osmolality of body fluids by influencing how much water is excreted in urine
ADH (Antidiuretic Hormone)
hormone that regulates ECV by influencing how much sodium and water are excreted in the urine
Aldosterone
a calculation that reflects unmeasurable anions present in plasma; it is useful for identifying the cause of metabolic acidosis
Anion Gap
negatively charged ions
Anions
compound that separates into ions (charged particles) when dissolved in water
Electrolyte
positively charged ions
Cations
charged particles
Ions
infusion of a donor’s blood into a patient
Allogenic Transfusion
collection and reinfusion of a patient’s own blood
Autologous Transfusion
analysis of the acid-base balance and oxygenation in the blood
Arterial Blood Gas (ABG)
pairs of chemicals that work together to maintain normal pH of body fluids; main one= bicarbonate buffer system, hemoglobin, protein buffers and phosphate buffers
Buffers
hypernatremia occurring in combination with ECV deficit
Clinical Dehydration
blood product…large particles that does not normally pass through cell and capillary membranes and do not readily dissolve into true solutions
Colloids
electrolyte therapy
Crystalloids
inward-pulling force caused by the presence of protein molecules
Colloid Osmotic Pressure (Oncotic Pressure)
osmolality of body fluids
Concentration
concentration of body fluids
Osmolality
passive movement of electrolytes or other particles from an area of higher concentration to one of lower concentration
Diffusion
IV pumps used for fluid replacement
Electronic Infusion Device (EID)
a third of a body’s fluid that is intravascular…the least stable of the body fluids
Extracellular Fluid Volume (ECV)
occurs when there is too much isotonic fluid in the extracellular compartment
ECV Excess
occurs when there is too small a volume of isotonic fluid in the vascular and interstitial areas
ECV Deficit
decreased vascular volume in the ECV deficit
Hypovolemia
abnormally high Na+ concentration in ECF caused by loss of relatively more water than salt or gain of relatively more salt than water
Hypernatremia
abnormally low Na+ concentration in ECF, which occurs from gaining relatively more water than salt or losing relatively more salt than water
Hyponatremia
an inadequate level of K+ in the blood
Hypokalemia
abnormally low blood concentration of total Ca+ or ionized Ca+
Hypocalcemia
abnormally high blood K+ concentration
Hyperkalemia
abnormally high Ca+ concentration in the blood
Hypercalcemia
net affect of several forces that tend to move fluid across a membrance
Filtration
solution that is less concentrated than normal blood that pulls fluid out of blood vessels into the cells, causing them to swell (%5 Dextrose-D5W, 1/2 NS-0.45% Normal Saline)
Hypotonic IV Fluid
solution that is more concentrated than normal blood that causes water to be pulled from cells into the blood vessels, causing them to shrink (5% Dextrose in 0.45% Normal Saline- D5 1/2, D5NS- 5% Dextrose in 0.9% Saline, 3% & 5% Saline only used in patients with dangerously low serum Na+ levels)
Hypertonic IV Fluid
solution that has the same concentration of normal blood that causes fluid to remain in the extracellular space (Normal Saline 0.9%, Lactated Ringers
Isotonic IV Fluid
breakdown of RBCs
Hemolysis
the dynamic interplay of three processes: fluid intake & absorption, fluid distribution and fluid output
Fluid Homeostasis
continuous water loss occurring through the skin and lungs that is invisible
Insensible Water Loss
occurs when IV fluids leak into subcutaneous tissue around the site because the catheter tip no longer is in the vein
Infiltration
state that results from conditions that increase metabolic acids in the body or decrease the amount of base (bicarbonate)
Metabolic Acidosis
state that results from a gain of bicarbonate or from excessive excretion of metabolic acid (most commonly caused by vomiting and gastric suction)
Metabolic Alkalosis
an increased PaCO2 and an increased H+ ion concentration (pH below 7.35) that reflects the excess carbonic acid in the blood
Respiratory Acidosis
a decreased PaCO2 an increased pH (above 7.45) that reflects the deficit of carbonic acid in the blood
Respiratory Alkalosis
“colloid osmotic pressure”; inward-pulling force caused by the presence of protein molecules
Oncotic Pressure
receptors in the brain that continually monitor plasma osmolality (when osmolality increases, the hypothalamus stimulates thirst)
Osmoreceptors
movement of water across a semipermeable membrane from a compartment of lower particle concentration to one that has a higher particle concentration
Osmosis
inward-pulling force exerted by the particles in any fluid compartment
Osmotic Pressure
replacement of fluid and electrolytes through infusion of fluids intravenously
Parenteral
inflammation of a vein
Phlebitis
catheter or infusion ports designed for repeated access to the vascular system
Vascular Access Devices (VADs)
technique used for accessing a vein by puncture through the skin using a sharp rigid stylet
Venipuncture
fluid that makes up 40% of the body’s fluids…the most stable in the body
Intracellular Fluid
reserve fluid in the body
Interstitial Fluid
least stable type of fluid in the body inside the blood vessels
Intravascular Fluid
fluids given that pull fluid from the tissues into the vessels which increases the number of colloids which causes an increase in osmolality…used to treat 3rd spacing, either alone or with crystalloids (EX: Dextran, Plasma, Hetastarch and Albumin)
Colloid Volume Expanders
force of a fluid pressing outward against the walls of its container
Hydrostatic Pressure
decreased albumin in the blood…found in malnourished and cachectic
Hypoalbuminemia
abnormally decreased amount of protein in the blood
Hypoproteinemia
the resistance of the skin to deformation
Turgor
Normal Hemoglobin (Hgb)
Female: 12-16 g/dL
Male: 14-18 g/dL
Normal Hematocrit (Hct)
Female: 37-47%
Male: 42-52%
Normal Sodium (Na+)
136-145 mEq/L
Normal Potassium (K+)
3.5-5.0
Normal Chloride (Cl-)
98-106
Normal Carbon Dioxide (CO2)
23-30
Normal BUN
10-20
Normal Glucose
70-110
Normal Creatinine
Female: 0.5-1.1
Male: 0.6-1.2
Normal Body pH
7.35-7.45
Normal PCO2
35-45
Normal HCO3 (Bicarbonate)
22-26