A CKD patient develops serum K+ 7.2 mEq/L without ECG changes. Best initial management?
AEmergency dialysis
BSodium polystyrene
CInsulin with glucose
DCalcium gluconate
The body fluid compartments of a patient were measured, showing the following ion concentrations: - Sodium (Na): $10 \mathrm{mEq} / \mathrm{L}$ - Potassium (K): $140 \mathrm{mEq} / \mathrm{L}$ - Chloride (Cl): $15 \mathrm{mEq} / \mathrm{L}$ Based on these values, which fluid compartment is being described?
APlasma
BICF
CInterstitial fluid
DECF
Which of the following is the primary mechanism that drives sodium reabsorption in the proximal tubule?
ASodium reabsorption through cotransport with amino acids at the luminal membrane.
BSodium reabsorption through cotransport with glucose at the luminal membrane.
CSodium reabsorption through countertransport with hydrogen ions at the luminal membrane.
DActive sodium transport via the Na+-K+-ATPase pump at the basolateral membrane.
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