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Transient hypercalciuria after commencing total intravenous nutrition.
Clinical Nutrition (Edinburgh, Scotland)
|December 1, 1984
Summary
Total intravenous nutrition (I.V.N.) can cause temporary hypercalciuria (high urine calcium) in 50% of patients. This condition often resolves within weeks and may link to protein breakdown, not major mineral issues.
Area of Science:
- Clinical Nutrition
- Metabolic Studies
- Renal Physiology
Background:
- Total intravenous nutrition (I.V.N.) is a critical supportive therapy.
- Potential metabolic disturbances during I.V.N. require careful monitoring.
- Hypercalciuria is a known but not fully understood complication of nutritional support.
Purpose of the Study:
- To investigate the incidence and characteristics of hypercalciuria in patients receiving prolonged I.V.N.
- To explore the relationship between calcium and nitrogen excretion during I.V.N.
- To assess the clinical significance of transient hypercalciuria in this patient group.
Main Methods:
- Study included 28 patients receiving standard I.V.N. for over 14 days.
- Urine calcium and nitrogen excretion rates were monitored.
- Patients were divided into groups based on daily calcium intake (3.75 mmol vs. 8.75 mmol).
Main Results:
- Transient hypercalciuria developed in 50% of patients, peaking at 1 week.
- Hypercalciuria persisted for 1-4 weeks in most affected individuals.
- Significant correlation found between urine calcium and nitrogen excretion (r=0.48, p<0.001).
- No significant difference in urine calcium excretion based on daily calcium intake.
Conclusions:
- Transient hypercalciuria during I.V.N. appears common.
- The condition may be linked to increased protein catabolism and nitrogen excretion.
- Hypercalciuria in this context likely does not signify a serious mineral metabolism disorder.