click below
click below
Normal Size Small Size show me how
PharmCh15
Question | Answer |
---|---|
What are cyrstalloid solutions? | Contain electrolyte and nonelectrolyte substances Used often and low cost Correction of dehydration, tx of shock, vehicle for IV drugs Adverse effects: overhydration |
Physiologic Saline (Normal Saline, 0.9%NaCl) | Crystalloid DO NOT USE IN HEART DZ Pts Bathe tissues during sx to keep from drying out Increases plasma volume and correct Na deficiency |
Lactated Ringers Solution (LRS) | Crystalloid Lactate converted to bicarbonate to act as a buffer against acidosis Do not administer with blood Not good for critical pts |
Dextrose 5% in Water (D5W) | Crystalloid Supplements calories Not as maintanence or SQ Pure water=metabolized to CO2 and H2O |
Normasol-M in 5% Dextrose | Crystalloid Balanced maintanence fluid Acetate as buffer |
Plasmalyte-M in 5% Dextrose | Crystalloid Balanced replacement/maintanence solution Acetate and lactate as buffers |
What is a colloid solution? | Large molecular weight particles that cannot cross the cell membrane, confined to vascular space, expand plasma volume. Use if cerebral or pulmonary edema may be a complication. Tx of hypovolemic shock |
Dextrans | Colloid Polysacharride solution May cause allergic rxn or clotting deficits Not for maintanence or long term use |
Hetastarch (Hespan) | Colloid Startch $$$$$$ |
Hypertonic Solutions (Hypertonic Saline) | Similar to colloids Tx of shock and endotoxemia, burns, pancreatitis, major sx Adverse effects: clotting deficiency, allergic rxns |
What are some fluid additives? | Sodium bicarbonate, KCl, 50% Dextrose |
Na Bicarbonate (Baking Soda) | Corrects metabolic acidosis, hypercalcemia, hyperkalemia |
KCl | Tx or prevention of K deficits Adverse effects: hyperkalemia Must know serum K levels before tx |
What are the causes of hypokalemia? | Anorexia, diuresis, diarrhea |
50% Dextrose | Caloric supplement We add it other solutions to make % desired C1V1=C2V2 |
When are oral electrolyte solutions used? | Mild to moderate electrolyte replenishment |