Exploring Water-free Sodium Storage

Summary

The overarching goal of this proposal is to definitively establish if acute water free Na storage and release occurs, if the amount stored/released is of a quantity that is physiologically relevant, and if the location is intracellular vs. extracellular.

Eligibility

Inclusion Criteria:

* ESRD Patients actively undergoing PD with a reliably functioning PD catheter
* Systolic blood pressure \> 130 mmHg
* Serum sodium \>135 mmol/L
* daily urine output \< 400ml
* stable PD prescription for at least 2 months without requirement of 4.25% glucose PD solution
* PD vintage of at least 6 months
* Euvolemic as defined by the patient at their dry weight and free of any signs or symptoms of volume overload, per referring nephrologist

Exclusion Criteria:

* Poorly controlled diabetes with hemoglobin A1C\>9%
* 1 or more episodes of peritonitis in the previous 6 months or active infection of the peritoneal dialysis catheter
* Anemia with hemoglobin \<8g/dL
* Inability to give written informed consent or follow study protocol.
* Urinary incontinence
* Body weight \< 60kg
* gastrointestinal disease that causes diarrhea or expectation of sodium losses in stool.
* use of amiodarone in the last 6 months (which will interfere with tissue iodine ascertainment).

Conditions2

Locations1 site

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