click below
click below
Normal Size Small Size show me how
IV Therapy hondros
for midterm
Question | Answer |
---|---|
what is osmarliity | measure of solute concentration, osmoles of solute per liter of solution |
what is an example of sensible loss | water being excreted from body by skin, kidney, bowels, and lungs ( measurable0 |
what is an example of insensible loss | water loss through GI tract ( inmeasurable) |
what is the function of active transport | moves electrolytes from area of low concentration to area of hign concentration Is vital for maintaining the composition of both extracellular and intracellular compartments |
ISOTONIC SOLUTIONS | 0.9% Normal Saline Dextrose 5% in Water Lactated Ringers Result in expansion of intravascular fluid volume with little to no change in intracellular fluid levels |
Hypertonic | Osmolarity of 375 mOsm/L and above Concentration of salt is greater in ECF compartment which causes the cell to shrink Causes water from within the cell to move into the ECF compartment, which results in cells shrinking |
Hypotonic | Osmolarity is below 250 mOsm/L Contains less salt than the intracellular space ex: cooking a hot dog n pot of h2o and it swells Causes water to move into the cell, which results in the cell swelling Can cause cell to burst Used for dehydration |
Hypotonic solution | 2.5% Dextrose 0.45% Saline These fluids hydrate cells, but can deplete the circulatory load |
Hypertonic Solutions | 5% dextrose and 0.9% NaCl (D5 NS) Used to replace electrolytes and to shift ECF from interstitial tissue to plasma |
how Homeostatic Mechanisms regulate system | Fluids are regulated through Exogenous sources Intake of foods and fluids Endogenous sources Produced in the body through chemical oxidation processes |
homeostatic mechanisms regulate by | Compromised fluid and electrolyte balances nurses must regulate the homeostatic mechanisms exogenous you will be providing and monitoring fluid and electrolyte replacement through IV Endogenous sources will be balanced through body systems renal card |
what does mEq measure | chemical activity or combining power rather than weight – in total the mEq of cations in a given compartment is equal to the mEq of anions ex—plasma has 154 mEq of cations and 154 mEq of anions |
Role of Na+ | Regulation of fluid distribution Maintenance of body fluid osmolarity Promotion of neuromuscular response Regulation of acid-base imbalance Re:Water follows sodium |
Role of K+ | Regulation of fluid volume within the cell Promotion of nerve impulse transmission Contraction of skeletal, smooth, and cardiac muscle Control of hydrogen ion concentration, acid-base imbalance enzyme action for cellular energy production |
Role of Calcium | Maintaining skeletal elements Regulates neuromuscular activity Influences enzyme activity Converting prothrombin to thrombin Necessary to hold cells together for clotting |
Role of Magnesium | Enzyme action Regulation of neuromuscular activity Regulation of electrolyte balance Facilitating the transport of sodium and potassium across the cell membrane Influences the utilization of calcium, potassium, and protein |
Role of Chloride (Cl-) | Regulation of serum osmolarity Regulation of fluid balance retained along with sodium which causes water retention and increased fluid volume Controls acidity of gastric juices Regulation of acid-base balances Role in oxygen-carbon dioxide exchange |
causes of respiratory alkalosis | Pulmonary edema Aspiration of a foreign body Pneumothorax Severe pneumonia Prolonged exacerbation of asthma Overdose of sedatives Cardiac arrest Pulmonary embolism Emphysema |
All IV Fluids contain Electrolytes what are they? | 9, .45 : Sodium & Chloride D5W: Hydrogen, Oxygen Necessary for formation of bicarb buffer system |
S/S of Magnesium (Mg+) | Hyperactive reflexes Coarse tremors Muscle cramps Positive Chvostek’s and Trousseau’s Seizures Parasthesia of feet and legs Painfully cold hands and feet Disorientation Dysrhythmias Tachycardia Also a high risk for digitalis toxicity |
S/S Calcium (Ca2+) | Neuromuscular symptoms Numbness of fingers Cramps in muscles Hyperactive deep tendon reflexes Positive Trousseau’s sign and Chvostek’s sign laryngospasm and tetany-like contractions Irritability Memory impairment Delusions Seizures (late symptom |
What foods have Mg in them? | Unprocessed foods ( highest concentration) nuts soybeans cocoa seafood whole grains dried beans peas green vegetables |