DaVita PCT Clinical Exam Questions with Correct Answers Graded A+

DaVita PCT Clinical Exam Questions with Correct Answers Graded A+ Diffusion - Correct answer-movement of dissolved PARTICLES across a semipermeable membrane from the side of HIGHER concentration TO side of LOWER concentration (across concentration gradient). at equilibrium, no net transport takes place & dialysis fluid needs to be exchanged. ultrafiltration - Correct answer-removes water from the blood by PUSHING it across the semipermeable membrane from the blood side within the dialyzer's hollow fibers to the dialysate side; pressure is added to the dialyzer to get the fluid out. TMP - Correct answer-transmembrane pressure; pressure in dialyzer. (+ TMP can show a clot). osmosis - Correct answer-movement of WATER across a semipermeable membrane from the side of LOWER solute concentration to the side with the HIGHER solute concentration, until equilibrium is reached. osmotic pressure gradients drive ultrafiltration. when drawing the post-BUN sample at the completion of the treatment... - Correct answer-1) turn off the UFR 2) decrease the dialysate flow rate to 300 ml/min or place the machine in bypass 3) reduce BFR to 50 ml/min 4) then wait 15 seconds 5) draw the BUN blood sample from arterial sample port (venous port can give falsely low readings). the post-BUN blood sample is related to the patient's _____ reading - Correct answerKt/V two possible causes in inaccurate Kt/V results include: - Correct answer-1) blood sample was drawn before correct time interval and access recirculation makes the Kt/V falsely high. 2) blood sample was drawn after correct time interval was completed, urea rebound makes the Kt/V falsely low. optimal dialysate temperature - Correct answer-36.6 maximum recirculation time after a machine has been set up prior to tx cannot exceed: - Correct answer-2 hours