Certified Nephrology Nurse Certification (CNN) Practice Exam 2026 - Free Nephrology Nursing Practice Questions and Study Guide

Maintaining normal calcium levels is crucial in kidney disease management, particularly to prevent bone disease and cardiovascular issues. In patients with kidney disease, the kidneys may struggle to maintain proper levels of calcium and phosphate in the blood due to impaired function. This can lead to a condition known as renal osteodystrophy, where the bones become weak and demineralized.

Calcium plays a vital role in several physiological functions, including muscle contraction, nerve transmission, and blood coagulation. If calcium levels drop too low (hypocalcemia), it can lead to the release of parathyroid hormone (PTH), which pulls calcium from bones, further exacerbating bone density loss and increasing the risk of fractures.

Furthermore, abnormal calcium levels can contribute to cardiovascular complications. Studies have shown that elevated phosphate levels, which often accompany poor calcium regulation in kidney disease, can lead to vascular calcification. This significantly raises the risk of cardiovascular diseases, making calcium management essential for the overall health of patients with kidney dysfunction.

In this context, the importance of maintaining normal calcium levels extends beyond mere bone health; it is integral to preventing serious complications affecting both the skeletal and cardiovascular systems in individuals with kidney disease.