intradialytic hypertension

Hypertension during dialysis is characterized by elevated blood pressure that occurs in patients undergoing hemodialysis. This condition is associated with several factors, including fluid overload, electrolyte imbalances, and the activation of the renin-angiotensin system.

Primarily, fluid overload is the most frequent cause of hypertension during dialysis. When patients retain excessive water, their heart must exert more effort to circulate blood, resulting in increased blood pressure. Electrolyte imbalances, such as hypernatremia (high sodium levels in the blood), can also contribute to hypertension during dialysis by increasing the volume of extracellular fluid. Furthermore, the renin-angiotensin system's activation is another significant factor. The process of blood passing through the dialyzer may provoke an immune response, leading to the activation of the renin-angiotensin system and consequently raising blood pressure.

For patients experiencing hypertension during dialysis, regular blood pressure monitoring and adherence to the physician's treatment plan are advised. Patients should also manage their dietary sodium intake to minimize the risk of fluid overload. Regular dialysis sessions and maintaining healthy lifestyle habits can further assist in controlling blood pressure. In cases of severe hypertension symptoms during dialysis, patients should promptly notify medical staff for assistance. Patients must never alter medication dosages or discontinue treatment without a physician's guidance.