I. A patient is undergoing hemodialysis: 1. As the blood leaves the patient, its
ID: 815063 • Letter: I
Question
I. A patient is undergoing hemodialysis:
1. As the blood leaves the patient, its solute concentrations are ________ (hypertonic, hypotonic, isotonic) to the dialyzing solution.
2. As the blood re-enters the patient, its solute concentrations are ________(hypertonic, hypotonic, isotonic) to the dialyzing solution.
II. A 5% dextrose IV fluid contains 35 mEq of K+ per liter of solution.
If a patient receives 240mL of the IV solution, how many moles of K+ were delivered?
Express your answer using two significant figures.
hypertonic hypotonic isotonicExplanation / Answer
1) As the blood leaves the patient, its solute concentrations are hypertonic to the dialyzing solution.
2) 2. As the blood re-enters the patient, its solute concentrations are hypotonic to the dialyzing solution.
3) 1 litre (i.e 1000 ml) of the solution contains 35 meq of K+ = 35 millimoles of K+ (K is having unit charge,therefore its number of moles = its number of equivalents)
Thus, 240 ml of the solution contains (35*240)/1000 = 8.4 meq = 8.4 millimoles of K+ = 8.4*10-3 moles of K+