Management of Intradialytic Postural Hypotension

Nonmedication Strategies

Nonmedication strategies for treating intradialytic hypotension, such as cardiovascular status optimization, ultrafiltration rate minimization, and target-weight reassessment, should be prioritized before considering pharmacological interventions, as recommended by the Kidney International guidelines 1, 2

Review the current estimated dry weight (EDW) in patients with severe recurrent hypotension, as an inappropriately low EDW may contribute to hypotension, according to the American Journal of Kidney Diseases 3
Limit ultrafiltration rates to below 6 ml/h per kg to reduce mortality risk and prevent end-organ ischemia, as suggested by the Kidney International guidelines 1, 4
Extend dialysis treatment time to lower the hourly ultrafiltration rate for patients with large fluid intake, as recommended by the American Journal of Kidney Diseases 3
Consider sequential ultrafiltration/clearance to improve hemodynamic stability, as proposed by the American Journal of Kidney Diseases 3
Encourage patients with excessive weight gain to decrease their fluid intake between dialysis sessions, as advised by the American Journal of Kidney Diseases 3

Implement sodium profiling by increasing dialysate sodium concentration early in the session, followed by a continuous or stepwise decrease later in the treatment, as recommended by the American Journal of Kidney Diseases 3, 5
Use bicarbonate-containing dialysate instead of acetate-containing dialysate to minimize hypotension, as suggested by the American Journal of Kidney Diseases 3
Reduce dialysate temperature from 37°C to 34-35°C to increase peripheral vasoconstriction and cardiac output, particularly beneficial for patients with frequent episodes of hypotension, as recommended by the American Journal of Kidney Diseases 3, 5

Administer midodrine 30 minutes before hemodialysis to increase peripheral vascular resistance and enhance venous return, as suggested by the American Journal of Kidney Diseases 7
Consider midodrine as the most widely used pharmacological option for intradialytic hypotension, though efficacy data are limited, as noted by the Kidney International guidelines 1
Individualize the timing of antihypertensive medication administration based on interdialytic blood pressure patterns and frequency of intradialytic hypotension, as recommended by the Kidney International guidelines 1, 8
Consider avoiding nondialyzable antihypertensive medications in patients with frequent intradialytic hypotension, as suggested by the Kidney International guidelines 8, 9

Recognize that target weight is a critical element of dialysis prescription that may vary from treatment to treatment, as noted by the Kidney International guidelines 1, 10
Look for clues that the EDW may be too low, such as increased dietary intake accompanied by biochemical signs of improving nutrition in the presence of hypotension, as recommended by the American Journal of Kidney Diseases 3
In some cases, consider maintaining the patient slightly above the estimated dry weight, weighing the benefits against risks of chronic volume overload, as suggested by the Kidney International guidelines 10, 4

Avoid food intake immediately prior to or during hemodialysis, as it causes a decrease in peripheral vascular resistance and may result in hypotension, as recommended by the American Journal of Kidney Diseases 5
Consider raising hemoglobin to 11 g/L and/or administering supplemental inhaled oxygen to reduce intradialytic hypotension, especially for patients with cardiovascular or respiratory disease, as suggested by the American Journal of Kidney Diseases 5
For chronically hypotensive patients, consider increasing dialysis time or evaluating whether peritoneal dialysis might be better tolerated, as recommended by the Kidney International guidelines 4
Educate patients about the importance of adherence to the hemodialysis regimen to optimize outcomes, as advised by the American Journal of Kidney Diseases 5

Sodium profiling may be associated with increased interdialytic weight gain and variable increases in interdialytic blood pressure, as noted by the American Journal of Kidney Diseases 3, 6
The ideal dialysate sodium concentration remains uncertain, with ongoing research to determine optimal levels, as suggested by the Kidney International guidelines 4
Withholding antihypertensive agents before dialysis to reduce intradialytic hypotension has unknown effectiveness, as noted by the Kidney International guidelines 1, 2