AKI and ICU Neph Flashcards
Which ONE of the following is the BEST marker of renal recovery in AKI-D?
A. Urine output
B. BUN
C. Creatinine
D. Overall Clinical statis
A. Urine output
What are causes of osmotic nephropathy? (5)
- IVIG sucrose
- Hydroxyethyl starch
- Dextran
- Mannitol
- Radiocontrast agents
What is the definition of intraabdominal hypertension?
IAP > 12
What is the definition of intraabdominal compartment syndrome?
IAP > 20
What is the formula for abdominal perfusion pressure, and what is the normal value?
APP = MAP - IAP;
NL is > 50
What are the differentials for AKI in liver disease?
- Hepatorenal syndrome
- Prerenal azotemia (volume depletion)
- ATN
- AIN
- Glomerular dse: IgAN, cryoglobulinemia, MPGN, membranous nephropathy
What is normal access pressure in dialysis?
NL: -50 to -150 mmHg
A very positive access pressure indicates? (3)
- Kinks
- Occlusion of venous return pump
- Erroneous placement in arterial circulation
A very negative access pressure indicates?
Access problem (kink, clot, malposition, very low circulatory volume)
What is normal filter pressure?
50-250 mmHg
What does a high filter pressure indicate?
Clogging of membrane or downstream clotting
How do you calculate transmembrane pressure (TMP)?
TMP = mean filter pressure - effluent pressure
A high TMP (>150 mmHg) indicates?
clogging of the filter (e.g. protein buildup) esp in high inflammatory states
How do you calculate pressure drop?
Pressure drop = prefilter pressure - return pressure
A high pressure drop (>150 mmHg) indicates?
Filter clotting (eg blood clots in the hollow fibers)
