What is the most common complication during dialysis?

The most common complication during dialysis is hypotension, a sudden drop in blood pressure. Hypotension can occur when too much fluid is removed from the body during dialysis, or when the dialysis machine is not properly calibrated. Hypotension can cause a number of symptoms, including dizziness, lightheadedness, nausea, and vomiting. In severe cases, hypotension can lead to seizures or even death.