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Med Surg 1
Chapter 13 - Fluid & Electrolyte Imbalances
Term | Definition |
---|---|
Acidosis | Acid-Base imbalance characterized by an increase in H+ concentration. Decreased blood pH. |
Metabolic Acidosis | Low arterial pH due to reduced bicarbonate concentration. |
Respiratory Acidosis | Low arterial pH due to increased PCO2. |
Ascites | Type of edema in which fluid accumulates in peritoneal cavity. |
Active Transport | Physiologic pump that moves fluid from an area of lower concentration to one of higher concentration. Requires adenosine triphosphate for energy. |
Alkalosis | Acid-Base imbalance characterized by reduction in H+ concentration. Increased blood pH. |
Metabolic Alkalosis | High arterial pH with increased bicarbonate concentration. |
Respiratory Alkalosis | High arterial pH due to reduced PCO2. |
Diffusion | Process by which solutes move from an area of higher concentration to one of lower concentration. Does not require expenditure of energy. |
Homeostasis | Maintenance of a constant internal equilibrium in a biologic system that involves positive and negative mechanisms. |
Hydrostatic Pressure | Pressure created by the weight of fluid against the wall that contains it. |
Hypertonic Solution | Solution with an osmolality higher than that of serum. |
Hypotonic Solution | Solution with an osmolality lower than that of serum. |
Isotonic Solution | Solution with the same osmolality as serum and other body fluids. |
Osmolality | Number of milliosmoles per kilogram of solvent. |
Milliosmoles | Standard unit of osmotic pressure. |
Osmolarity | Number of milliosmoles per liter of solution. Describes the concentration of solute or dissolved particles. |
Osmosis | Process by which fluid moves across a semipermeable membrane from an area of low solute concentration to an area of high solute concentration. Process continues until solute concentrations are equal on both sides of membrane. |
Tonicity | Fluid tension or the effect that osmotic pressure of a solution with impermeable solutes exerts on cell size because of water movement across the cell membrane. |