Hypertension in Dialysis Patients I
About ½ of dialysis patients have high BP while on regular dialysis. A pre-dialysis BP > 140/90 mm Hg is required for the diagnosis of hypertension in this group.
Mortality, cardiovascular events including heart attacks, congestive heart failure, strokes are more common in hypertensive dialysis patients.
Systolic BP < 110 mm Hg Or >160 mm Hg is also associated with poor outcome in dialysis patients. Hence the BP has to be optimised and kept somewhere between these two limits.
Causes of high BP in dialysis population:
Expansion of body water and blood volume
Reduced blood supply to kidneys
High Calcium level
Preexisting essential hypertension
Increased sympathetic nervous activity
Poor water compliance
Poor drug compliance.
BP is measured before and after dialysis. For better overall BP, 24-hour ambulatory recordings are made.
Coming up Treatment of hypertension in the dialysis population.