Homeostasis is necessary for proper body functioning. An adequate fluid balance gives shape and size to cells and tissues, allows blood to perfuse to cells and tissues, and is a catalyst for hundreds of biochemical processes that keep our bodies alive.

When the body systems function correctly and people consume adequate fluid and healthy foods, homeostasis in maintained. This section discussed why some systems fail to adequately regulate fluids and electrolytes and what manifestations will alert the nurse that a regulation system is not functioning correctly.

homeostasis — the maintenance of equilibrium of two or more interdependent elements. fluid balance — the difference between intake and output. BUN to creatinine ratio — a comparison of BUN to creatinine to determine if alterations in BUN and creatinine are related to changes in fluid volume or kidney filtration. urge incontinence — an overactive bladder that contracts and causes urine leakage when the bladder is not full.