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- W2000899586 abstract "Background Hypernatremia is a serious electrolyte disturbance and an independent risk factor for mortality in critically ill patients. In many cases, hypernatremia is an iatrogenic problem that develops in the intensive care unit (ICU). Study Design Case series. Setting & Participants 45 patients were studied in a medical ICU. For inclusion in the study, patients needed to show an increase in serum sodium concentration to greater than 149 mEq/L from an initial concentration of less than 146 mEq/L. Outcomes Solute balance, fluid balance, and both. Causes of hypernatremia. Measurements The daily mass balance of sodium, potassium, and water over 1- to 3-day intervals was measured while serum sodium levels were increasing. Results During the study period, 69 of 981 patients (7%) acquired hypernatremia after admission to the ICU. Of these, 45 had sufficient data for evaluation. Maximum serum sodium levels were 150 to 164 mEq/L. The average duration of hypernatremia was 2 days (range, 1 to 10 days), with an average onset on day 5.9 ± 4.3 of the ICU stay. Patients were classified as having a positive solute balance (n = 17; 38%), negative fluid balance (n = 20; 44%), or both (n = 8; 18%). The most important extrarenal factors contributing to hypernatremia were fever (45%) and diarrhea (18%). Polyuria was observed in 38% of patients and 35% had acute renal failure. Hypertonic solutions were administered to 27% of patients. Limitations Retrospective analysis; lack of daily measurement of body weight. Conclusion ICU-acquired hypernatremia is associated with multiple factors associated with negative fluid and positive solute balance. Hypernatremia is a serious electrolyte disturbance and an independent risk factor for mortality in critically ill patients. In many cases, hypernatremia is an iatrogenic problem that develops in the intensive care unit (ICU). Case series. 45 patients were studied in a medical ICU. For inclusion in the study, patients needed to show an increase in serum sodium concentration to greater than 149 mEq/L from an initial concentration of less than 146 mEq/L. Solute balance, fluid balance, and both. Causes of hypernatremia. The daily mass balance of sodium, potassium, and water over 1- to 3-day intervals was measured while serum sodium levels were increasing. During the study period, 69 of 981 patients (7%) acquired hypernatremia after admission to the ICU. Of these, 45 had sufficient data for evaluation. Maximum serum sodium levels were 150 to 164 mEq/L. The average duration of hypernatremia was 2 days (range, 1 to 10 days), with an average onset on day 5.9 ± 4.3 of the ICU stay. Patients were classified as having a positive solute balance (n = 17; 38%), negative fluid balance (n = 20; 44%), or both (n = 8; 18%). The most important extrarenal factors contributing to hypernatremia were fever (45%) and diarrhea (18%). Polyuria was observed in 38% of patients and 35% had acute renal failure. Hypertonic solutions were administered to 27% of patients. Retrospective analysis; lack of daily measurement of body weight. ICU-acquired hypernatremia is associated with multiple factors associated with negative fluid and positive solute balance." @default.
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- W2000899586 date "2009-10-01" @default.
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- W2000899586 title "Tonicity Balance in Patients With Hypernatremia Acquired in the Intensive Care Unit" @default.
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- W2000899586 doi "https://doi.org/10.1053/j.ajkd.2009.04.015" @default.
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