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Abstract Background One of the fundamental goals of hemo dialysis (HD) prescription is to maintain serum potassium (K) levels within a narrow normal range during both the intradialytic and interdialytic intervals. Considering the extraordinarily high rate of cardiovascular mortality in HD population, clinicians are obligated to explore whether factors related to dialytic K removal can be modified to improve clinical outcomes. Aim of the Work The aim of the study was to detect potassium rebound after HD sessions in patients on maintenance HD Patients and Methods This was a prospective cohort study that was held in Hemodialysis units in Nephrology department - Ain Shams University Hospital and Sheikh Zayed Specialized Hospital for 3 months. The study included 60 male and female ESRD patients on maintenance HD, in which prevalent HD patients on maintenance HD 3 times/week. Results We found that that there were significant positive correlations between K levels before the sessions, immediately after the sessions and after 6 hours of the sessions. While there was significant negative correlations between K levels immediately after HD sessions and Hb levels and urea levels. There was also a highly significant negative correlation between K levels before the sessions and time of session (in hours). While there were highly significant negative correlations between K levels immediately after the sessions, after 6 hours of sessions and time of session (in hours). There was non-significant negative correlations between all K levels (before HD sessions, immediately after the sessions and 6 hours after the sessions) and frequency of sessions (per week), with p value 0.388, 0.299 and 0.086 respectively. Also, it showed non-significant negative correlations between all K levels (before HD sessions, immediately after the sessions and 6 hours after the sessions) and frequency of sessions (per month), with p value 0.086, 0.089 and 0.083 respectively. Our results showed a significant positive relation between the number of K raising antihypertensive drugs used by the patients and K levels before HD sessions. Conclusion Patients with end-stage renal disease (ESRD) on maintenance dialysis have a high risk of developing hyperkalemia, generally defined as serum potassium (K+) concentrations of 5.0 mmol/l, particularly those undergoing maintenance hemodialysis. Currently, the key approaches to the management of hyperkalemia in patients with ESRD are dialysis, dietary K+ restriction, and avoidance of medications that increase hyperkalemia risk. Management of these modifiable factors plays a crucial role in preventing hyperkalemia in patients undergoing dialysis. The availability of new oral K+-binders may potentially reduce the need for a highly restricted diet in patients with ESRD, and reduce the risk of potentially life-threatening hyperkalemia and the cardiovascular complications associated with rapid shifts in serum K+ concentrations that can occur with HD.
Afify et al. (Sat,) studied this question.