Evaluation of hemodynamic Changes in serum sodium and potassium levels during and after percutaneous nephrolithotomy (PCLN) within 24 hours postoperatively

One of the major complications of percutaneous nephrolithotomy(PCLN)operation is the risk of fluid absorption and serum electrolyte changes. The aim of this study was to determine the effects of distilled water on the patient's electrolyte and hemodynamics during PCLN .
This study was an interventional clinical trial performed on 90 patients before and after PCNL. In order to collect data on electrolyte levels, blood samples were taken on admission, before irrigation, every hour during irrigation, immediately and 24 hours after the procedure, and the data were recorded.
There was a significant relationship between the irrigation fluid volume and serum sodium and potassium levels after the start of the procedure, one hour later and during recovery; however there was a significant correlation between irrigation time and sodium level but it was not the same with potassium.There was a significant correlation between irrigationfluid volume and time and heart rate before, at 10 minutes after the irrigation and also between irrigation fluid and time and duration of anesthesia before, at 10 and 30 minutes after the irrigation. There was also a significant correlation between irrigation fluid volume and duration of anesthesia immediately before, and at 20, 30, 40 minutes after; as well as between irrigation time and systolic blood pressure 10 minutes after the irrigation . However ,irrigation fluid volume and time were significantly correlated with diastolic blood pressure at 30 and 40 minutes after the procedure and there was a significant correlation between the duration of anesthesia and diastolic blood pressure immediately before the procedure.
According to the present study, hyponatremia and hypokalemia can be avoided by reducing the irrigation fluid volume and time; the serum level of sodium and potassium must be checked immediately before the irrigation and during recovery.