IONS-ICF vs. ECF

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SUMMARY

1. Total body Na exceeds total body K

2. 70% of total body sodium is in a readily exchangeable state (~3000 mmol)

3. 90% of total body potassium is in a readily exchangeable state (~3000 mmol)

4. Serum osmolality is ~300 mosm/L

5. pH of ECF is 7.35-7.45


Reference(s)

Barrett, K.E., Barman, S.M., Boitano, S., Brooks, H.L., Weitz, M., Brian Patrick Kearns, Ganong, W.F. and Mcgraw-Hill Education (Firm (2016). Ganong’s review of medical physiology. 25th ed. New York: Mcgraw Hill Education.
Hall, J.E. and Hall, M.E. (2020). Guyton And Hall Textbook Of Medical Physiology. 14th ed. S.L.: Elsevier - Health Science.
West, J.B. and Luks, A.M. (2021). West’s Pulmonary Pathophysiology. Lippincott Williams & Wilkins.