تغييرات سديم و پتاسيم خون پس از شستشوي معده با آب شهر در بيماران دچار مسموميت خواركي

Plasma Nall( Changes After Gastric Lavage with Tap Water in Ingestion Poisoning Patients

Introduction. Ingestion poisoning include 79% of all poisoning. Usually the first step in management of these patients is gastric lavage, which in most centers is done by tap water (exepct for children below 4 years old). Due to low Na and K of tap water and daily secretion of Na and K in stomach, one of the probable complications of this lavage is losting the Na and K, and electrolyte imbalance in patients. Methods. This study was done on 100 poisoned patients undergone Gastric lavage. All of patients were more than 4 years old. Poisoning by toxin or drug contain sodium or potassium, cause to exclude patients from study. For all patients Na/K of plasma before and half hour after gastric lavage were measured. After gastric lavage, volume of lavage, Na/K of lavage liquid and Na/K of tap water were recorded. Results. The changes of plasma Na in all patients were from 7 mmol/lit increasing to 12 mmol/Lit decreasing, and for plasma K were from 1 mmol/lit increasing to 1.2 mmol/it decreasing. Means changes of Na was 2.74 mmol/Lit decreasing and mean change of K was 0.33 mmol/Lit. Decreasing in plasma electrolytes in patients with high volume of gastric lavage was predominant but this relation between volume of lavage and changing of plasma electrolytes was not considerable. Also total Na and K excretion in all volumes of lavage was nearly equal. Discussion. In patients without underlying disesae, plasma Na/K changes during gastric lavage is not considerable but in patients with underlying disease or old patients can lead to electrolytes disturbance and to be recommended in these patients plasma electrolytes to be measured.