Skip to main content
Ch. 25 The Urinary System
Chapter 24, Problem 25

Why are renal failure patients undergoing dialysis at risk for anemia and osteoporosis? What medications or supplements could you give them to prevent these problems?

Verified step by step guidance
1
Understand that the kidneys produce erythropoietin, a hormone that stimulates red blood cell production. In renal failure, erythropoietin production decreases, leading to anemia.
Recognize that the kidneys also play a crucial role in converting vitamin D into its active form, calcitriol, which is essential for calcium absorption. Impaired conversion can lead to osteoporosis.
Identify that patients undergoing dialysis may require erythropoiesis-stimulating agents (ESAs) to help increase red blood cell production and manage anemia.
Consider that vitamin D supplements or active forms of vitamin D (such as calcitriol) may be prescribed to help maintain bone health and prevent osteoporosis.
Evaluate the need for additional supplements, such as calcium, to support bone health, and ensure that the patient's overall treatment plan is tailored to their specific needs.

Verified Solution

Video duration:
2m
This video solution was recommended by our tutors as helpful for the problem above.
Was this helpful?

Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Renal Failure and Dialysis

Renal failure occurs when the kidneys can no longer filter waste products from the blood effectively. Patients undergoing dialysis are reliant on this artificial process to remove toxins and excess fluids, but it does not fully replicate kidney function. This can lead to imbalances in essential nutrients and hormones, contributing to conditions like anemia and osteoporosis.
Recommended video:
4:58
Overview of Renal Physiology

Anemia in Dialysis Patients

Anemia is a common complication in patients with renal failure, primarily due to decreased production of erythropoietin, a hormone produced by the kidneys that stimulates red blood cell production. Dialysis can also lead to blood loss and the destruction of red blood cells, exacerbating anemia. Understanding the mechanisms behind anemia helps in managing and treating this condition effectively.
Recommended video:
7:49
Composition of Blood

Osteoporosis and Mineral Imbalances

Osteoporosis in dialysis patients is often linked to imbalances in calcium, phosphorus, and vitamin D levels, which are crucial for bone health. The kidneys play a vital role in regulating these minerals, and their dysfunction can lead to weakened bones. Medications such as phosphate binders and vitamin D supplements are commonly used to help manage these imbalances and prevent osteoporosis.
Recommended video:
Guided course
1:57
Microscopic Anatomy of Bones - Bone Cells Example 2