Most common cause of death in dialysis patient
**Core Concept**
Cardiovascular disease is a major complication in patients undergoing dialysis, primarily due to the accelerated progression of atherosclerosis and increased risk of cardiac arrhythmias. The high mortality rate in dialysis patients is largely attributed to cardiovascular events, such as myocardial infarction and cardiac arrest.
**Why the Correct Answer is Right**
The increased risk of cardiovascular disease in dialysis patients can be attributed to several factors, including chronic inflammation, oxidative stress, and abnormalities in mineral metabolism, particularly hyperphosphatemia and secondary hyperparathyroidism. These factors contribute to the development of vascular calcification, endothelial dysfunction, and increased vascular stiffness, ultimately leading to cardiovascular events.
**Why Each Wrong Option is Incorrect**
**Option A:** Infection is a common complication in dialysis patients, but it is not the most common cause of death. While infections can be life-threatening, they are generally more manageable with appropriate antibiotic therapy.
**Option B:** Malignancy is a significant concern in dialysis patients, but it is not the leading cause of death. Cancer can be a complication of chronic kidney disease, but it is not as immediate a threat as cardiovascular disease.
**Option C:** Stroke is a potential complication in dialysis patients, but it is not the most common cause of death. While stroke can be a devastating event, it is generally less common than cardiovascular events.
**Clinical Pearl / High-Yield Fact**
Dialysis patients are at increased risk of cardiovascular disease due to the accelerated progression of atherosclerosis. This is often referred to as "cardiovascular calcification," which is characterized by the deposition of calcium and phosphorus in the arterial walls, leading to increased vascular stiffness and cardiovascular events.
**Correct Answer: C. Cardiovascular disease**