A cardiac patient is in the hospital for observation after showing up in the eme

Question

A cardiac patient is in the hospital for observation after showing up in the emergency room with heart palpitations. The patient is a carb freak and has someone sneak into his room two large orders of McDonald’s fries (200 g total). When the patient consumes this feast, he absorbs 30 mmol K+.

What effect would this potassium intake have on [K+]ECF if you assume the K+ remained within the ECF? (Assume an ECF volume of 14L, an average [K+]ECF = 4.5 mM; further assume there is no removal of potassium from the ECF by either his cells or kidneys, i.e., it all remains within the ECF.)

If the 30 mmol is distributed throughout the patient’s body fluids, what would be the overall increase in [K+]ECF? (Assume ICF volume is 28L and total body water is ICF+ECF=42L; further assume that K+ is distributed among the fluid compartments in proportion to their respective volumes.)

If K+ is distributed through out all body fluids, what would be the change in [K+]ICF? Calculate the change as a percent of normal [K+]ICF. (Assume ICF [K+] is 150 mM, ICF volume is 28L, and the K+ becomes distributed among the fluid compartments in proportion to their respective volumes.)

Please help me with this questions!!!

Explanation / Answer

Intracellular Fluid (ICF) - fluid found in the cells.

Extracellular Fluid (ECF) - all fluids found outside the cells.

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