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GCN N170 IV Fluids
N170 IV Fluid Study Aid
| Question | Answer |
|---|---|
| Diffusion | Movement of molecules from a solution of higher concentration to a solution of lower concentration |
| Osmotic Pressure | Water movement across a semipermeable membrane which is caused by the solution of higher solute concentration exerts pressure to move water across the membrane to equalize the concentration of the solution |
| Colloid Osmotic Pressure | The pull of H2O from interstitial spaces into the vascular compartment caused by plasma proteins |
| Colloids | Large protein molecules that do not dissolve in true solutions |
| Solutes | Substances that dissolve in liquids |
| Solvent | The component of a solution that can dissolve a solute. |
| Filtration | The process of movement of fluid and solutes across a membrane from one compartment to another.Movement if from area of higher pressure to lower pressure. |
| Osmosis | Movement of water across cell membranes from area of less concentration to area of greater concentration=H2O movement to dilute the concentration |
| 0.9% NaCl | Normal SalineIV fluid compatibile with most IV medications |
| Define Isotonic Solution | A solution in which the solutes and solvent are balanced.IV fluid therefore remains in the vascular compartent expanding vascular volume. |
| Purpose of Isotonic Solutions | Used to expand volume and maintain normal tonicity |
| Types of Isotonic Solutions | 0.9% NaCl,Lactated Ringers, & D5W (D5W is isotonic on initial administration but when metabolized expands the intracellular and extracellular fluid compartments.) |
| Define Hypotonic Solution | Solvent exceeds solute - has lesser concentration of solutes than plasma Treats cellular dehydration via a fluid shift from the vascular compartment into the cells. |
| Purpose of Hypotonic Solutions | Used to dilute excess serum electrolytes; Promotes elimination by the kidneys |
| Types of Hypotonic solution | 0.45% NaCl |
| Define Hypertonic Solution | Solutes exceed solvent - higher concentration of solutes than plasma. Causes a fluid shift from the cells into the vascular compartment therby expanding the vascular volume |
| Purpose of Hypertonic Solutions | Used to correct electrolyte imbalances |
| Types of Hypertonic solutions | D5.9 NaCl,D5 LRD5.45 NaCl |
| Syringe Pump | Use to infuse medications directly from a syringe. Can be programmed in mL/hr or units/hr |
| PCA | Patient Controlled AnalgesiaAllows patient to self administer IV medication to control pain. |
| Infusion Pump | IV device that maintains flow in mL/hr by displacing IV fluid at the prescribed rate via pressure. |
| Gravity IV | IV rate is calculated in drops per minute to deliver prescribed mL/hr |
| Nursing Implications with Isotonic IVF administration | Assess for signs and symptoms of hypervolemia: Bounding Pulse, Shortness of Breath, Distended Neck Veins |
| Nursing Implications with Hypotonic IVF administration | Do not administer to clients at risk for thirsd space fluid shift of accumulation of EXF in a body space - can result in circulatory volume loss and potential for organ failure, or increased intracranial pressure. |
| Nursing Interventions for clients receiving IVF | Monitor Electrolytes, Monitor I&O, Assess Cardiac and Pulmonary status, Monitor infusion site. |