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Improving the diagnostic workup of hyponatremia in the setting of kidney disease: a continuing medical education (CME) initiative

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Abstract

Purpose

Hyponatremia is a common electrolyte disorder and is associated with mortality. We examined the frequency of appropriate testing in response to an episode of inpatient hyponatremia in a large urban hospital to better inform our educational intervention. We then evaluated the impact of a live CME activity with a focus on CKD- and ESRD-associated hyponatremia physiology, on diagnostic practices of audience hospitalist attendings.

Methods

We performed a retrospective database analysis of all patients admitted to Montefiore Medical Center in 2014 to examine the performance of hospital staff in response to hyponatremia across all CKD stages. We then did a comparative analysis of diagnostic workup orders for hyponatremic patients admitted to audience members of a live CME activity in the 4 months prior as compared to the 4 months after the activity.

Results

The prevalence of hyponatremia was 27% in a cohort of hospitalized patients: 41% of these hyponatremia inpatients had CKD, and 11.4% had ESRD. Overall less than 10% of patients had orders written for serum and urine osmolality without a differential pattern based on CKD or ESRD diagnosis. Among the patients admitted to the CME audience hospitalists, urine/serum osmolality and urine sodium orders occurred infrequently overall and did not differ after vs. before the lecture.

Discussion

The frequency of appropriate diagnostic orders written in response to an episode of hyponatremia was very low and did not vary based on degree of CKD. A CME activity with an emphasis on the role of CKD/ESRD in diagnostic accuracy did not improve the order quality in a group of audience hospitalists. Efforts to improve the diagnostic workup of hyponatremia with concomitant kidney disease are crucial to proper management of these patients.

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Acknowledgements

We would like to acknowledge the Montefiore CME office with their help with the live CME activity. The research described was supported by NIH/National Center for Advancing Translational Science (NCATS) Einstein-Montefiore CTSA Grant No. ULT1TR001073. Its contents are solely the responsibility of the authors and do not necessarily represent the official views of the NIH.

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Correspondence to Ladan Golestaneh.

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Conflict of interest

The corresponding author and another author received funds from the CME office for their participation in preparing the live lecture. There were no funding and no competing interests in gathering the data, analyzing it or preparing it for submission. Dr Golestaneh taught the CME activity, gathered all data, analyzed the data and wrote part of the manuscript. Drs Joel Neugarten and Amanda Raff helped to write the manuscript. Drs Kargoli and Southern helped with conceptual design of the study and the interpretation of the findings.

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Golestaneh, L., Neugarten, J., Southern, W. et al. Improving the diagnostic workup of hyponatremia in the setting of kidney disease: a continuing medical education (CME) initiative. Int Urol Nephrol 49, 491–497 (2017). https://doi.org/10.1007/s11255-017-1501-6

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  • DOI: https://doi.org/10.1007/s11255-017-1501-6

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