Exam 1 lecture 7 Flashcards
what is PD
peritoneal dialysis
types of peritoneal dialysis
CAPD- continous ambulatory PD
CCPD- continous cyclic PD
NIPD- nocturnal intermittent PD
NTPD- nocturnal tidal PD
filtration methods for patients that can not do dialysis
CAVH- continous aretriovenous hemofiltration
CVVH- continous venous hemofiltration
CVVHD- continous venous hemodilfiltration
what is ultrafiltrate
waste
What can kidney do that dialysis machine can not
Vit D and EPO activation
general rule to initiate hemodialysis
BUN>100
SCR>10
DIfference between AV fistula and AV graft
In fistula, vein is sowed to artery, in graft tube is placed between the two
fistulas take 3 months to mature while grafts take 2-3 weeks
fistulas have longer survivals while grafts have shorter ones (synthetic material)
fistulas have few complications, grafts have increased infection rate
what are substances not removed by dialysis machine
Lipophilic materials (hydrophilic is removed)
Large MW substances
High vd
high pt bound
What are the two values that tell us how effective dialysis was
KT/V and URR
What is KT/v
measure of total body water that is cleared of urea
V-VOD
K- clearence of urea
T- time on dialysis (this is only thing under our control)
Goal of KT/V?
1.4 or greater
what is URR
urea reduction rate
goal URR
greater than 70
what is PD
Uses patients peritoneal membrane as dialysis membrane. residual renal function still preserved with PD
CAPD short cycle
throughout day
CAPD long cycle
Overnight
Only PD without machine
CAPD
CCPD short cycle
during night
CCPD long cycle
during day
NIPD short cycle
during night
NIPD long cycle
does not exist
NTPD
long and short cycle during night
What is CRRT
continous renal replacement therapy
Who is CRRT for
ARF patients that can not tolerate Hemodilaysis. They are on constant 24/7 dialysis (slow)
What is the only CRRT without dialysate
CAVH (CVVH)
mechanism name for how blood is dialyzed in CAVH (CVVH)
convection
what is CVVHD
continous venovanous hemodialysis
Has dialysate and waste is removed by diffusion.
difference between CVVHD and CVVHDF
increased rate in CVVHDF that
