Question

Use of an artificial kidney during hemodialysis may result in:
(a) Nitrogenous waste build-up in the body (
b) Non-elimination of excess potassium ions 
(c) Reduced absorption of calcium ions from gastro-intestinal tract 
(d) Reduced RBC production 
Which of the following options is the most appropriate?

• A. Nitrogenous waste build-up in the body
• B. Non-elimination of excess potassium ions
• C. Reduced absorption of calcium ions from gastro-intestinal tract
• D. Reduced RBC production

Answer 1

The Correct Option is C

During hemodialysis, an artificial kidney is used to filter waste products from the blood when the kidneys are not functioning properly. Let's evaluate each of the given options:

1. Nitrogenous waste build-up in the body: Hemodialysis is specifically used to remove nitrogenous waste. Hence, this option is incorrect.
2. Non-elimination of excess potassium ions: One of the purposes of hemodialysis is to remove excessive ions, including potassium. Therefore, this option is incorrect.
3. Reduced absorption of calcium ions from the gastrointestinal tract: Patients undergoing hemodialysis often experience disturbances in calcium and vitamin D metabolism, which can lead to reduced calcium absorption. Hence, this option is correct.
4. Reduced RBC production: While kidney disease can lead to reduced RBC production due to decreased erythropoietin production, this is not a direct result of hemodialysis itself. Thus, this option is incorrect.

Given this reasoning, the most appropriate option is reduced absorption of calcium ions from the gastrointestinal tract.