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Nephrogenic diabetes insipidus due to hypokalemia and hypomagnesemia in T1D: Case Study
A rare case of nephrogenic diabetes insipidus (NDI) acquired in a 27-year-old type-1 diabetic patient due to hypokalemia and hypomagnesemia that was reported at Emergency & ICU Department, Shree Hindu Mandal Hospital, Dar es Salaam Tanzania, has been published in the Clinical Case Reports.
Nephrogenic diabetes insipidus (NDI) is rarely considered against more common differentials such as diabetes mellitus in patients presenting with polydipsia and polyuria. Hypokalemia and hypercalcemia are known to induce nephrogenic diabetes insipidus (NDI), but not much is known about hypomagnesemia.
Sangey E et. al conducted a case study on a 27-year-old male patient who acquired nephrogenic diabetes insipidus (NDI) due to hypokalemia and hypomagnesemia.
The patient was a previously healthy male who was diagnosed with appendicitis later on admission to the referral facility, he was diagnosed with a new presentation of type 1 diabetes mellitus. Postappendectomy, he was referred to the Emergency & ICU Department, Shree Hindu Mandal Hospital, Dar es Salaam Tanzania, for further management.
After 24 hours of admission, the patient had a urinary output of 9 L of dilute urine with a negative fluid balance of 3 L. His serum potassium was persistently low despite receiving a continuous KCl infusion for over 24 hours. His serum potassium level was 1.94 mmol/L so his serum magnesium levels were ordered to rule out the probable cause of refractory hypokalemia, which revealed hypomagnesemia of 0.50 mmol/L (0.66 −1.25 mmol/L). Also, his ECG showed diffuse U‐wave morphology correlating with hypokalemia and/or hypomagnesemia.
Based on these findings, a diagnosis of nephrogenic diabetes insipidus (NDI) was made secondary to hypomagnesemia induced severe hypokalemia.
Following a modified treatment plan, he was transferred from the ICU to the general ward to continue with the management and follow‐up. Further follow‐up as an outpatient post-discharge yielded normal electrolyte results.
The researchers concluded that this was a rare clinical occurrence that they had observed and treated in their practice. They were not sure if similar occurrences took place in their setting in the past, hence from now on they would always maintain a high level of suspicion in similar clinical presentations to ensure NDI does not ever go unrecognized.
Reference:
The combined effect of hypomagnesemia and hypokalemia inducing nephrogenic diabetes insipidus in a patient with type 1 diabetes mellitus by Sangey E et. al published in the Clinical Case Reports
DOI: 10.1002/ccr3.4564
Dr. Shravani Dali has completed her BDS from Pravara institute of medical sciences, loni. Following which she extensively worked in the healthcare sector for 2+ years. She has been actively involved in writing blogs in field of health and wellness. Currently she is pursuing her Masters of public health-health administration from Tata institute of social sciences. She can be contacted at editorial@medicaldialogues.in.
Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751