BIOS 256 Week 5 Case Study; Dehydration with Emesis

BIOS256 - Week 5 Case Study: Dehydration with Emesis Homeostasis refers to the body’s ability to maintain a stable internal environment, ensuring the balance of fluids, electrolytes, and pH levels. Fluids in the body can be divided into intracellular fluids (inside the cells) and extracellular fluids (outside the cells). Dehydration occurs when fluid output exceeds intake, causing intracellular fluid to leave the cells in an attempt to restore solute concentrations. Symptoms of dehydration include thirst, dry mouth, oliguria (low urine output), enophthalmos (sunken eyes), and drowsiness. Conversely, overhydration occurs when fluid intake exceeds output, causing extracellular fluid to enter the cells to balance solute concentrations. Overhydration can lead to symptoms such as nausea, malaise (discomfort), altered mental status, seizures, and even coma. Electrolyte balance is equally critical in maintaining homeostasis, as electrolytes are charged solutes that help regulate fluid dynamics and various physiological functions. Sodium is the most abundant cation in extracellular fluid and is vital for nerve impulse transmission, muscle contraction, and fluid balance. Chloride, the most prevalent anion in extracellular fluid, plays a role in fluid and pH balance, and is also key to hydrochloric acid production in the stomach. Potassium is the primary cation in intracellular fluid and helps regulate nerve impulses, muscle contractions, and fluid balance. Calcium, stored in bones, is involved in muscle contraction, blood clotting, and nerve function. Bicarbonate works with chloride to maintain pH balance within the body. Maintaining pH balance is also crucial for bodily functions. The blood plasma has a normal pH range of 7.35–7.45, slightly alkaline. The body uses buffer systems such as the carbonic acid-bicarbonate system, protein buffers, and phosphate buffers to regulate pH. Acidosis occurs when the blood pH drops below 7.35, while alkalosis occurs when the pH rises above 7.45. The respiratory and metabolic systems play key roles in regulating pH. Compensation occurs when one of these systems attempts to counteract the