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Low dialysate potassium concentration is associated with prolonged recovery time.

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eMediNexus    30 October 2017

A new study published in Hemodialysis International assessed the reliability of answers to recovery questionswhich predict the impact of treatment parameters and to determine if recovery time was associated with modifiable dialysis parameters. This study conducted a quality assurance project in which patients were enquired about the duration of time they required to recover from their last dialysis sessionafter consecutive and nonconsecutive treatments 8201 8804 8201 seven times. Answers were obtained in association with 1572 treatments in 364 patients. The results revealed that the recovery time was 2 hours in 52.1 2 to 7 hours in 20.9 and 7 hours in 27.0 of treatments. Polychoric correlations demonstrated highly reliable responses within individual patients between consecutive and nonconsecutive treatments. Prolonged recovery was associated with a dialysate potassium of 1versus 2 mEq L and 1 versus 3 mEq L body mass index 35 kg m2 post dialysis systolic blood pressure SBP 115 mmHg and intradialytic cramps. Whereas there were no associations with gender race age end stage renal disease ESRD etiology intradialytic SBP 90 mmHg serum sodium or potassium dialysate sodium bicarbonate or temperature blood flow rate or ultrafiltration rate. Hence it was concluded that responses to the recovery question were reliable and low dialysate potassium was associated with prolonged recovery.

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