GFR measurement methods — Flashcards

Flashcard 1: What is the approximate normal GFR (mL/min)? _____

Answer: 125 mL/min

Flashcard 2: In addition to inulin, _____ clearance may also be used to estimate GFR

Answer: creatinine

Flashcard 3: The filtration fraction may be calculated using the equation FF = _____

Answer: GFR / RPF

Flashcard 4: What percent of plasma Ca2+ is filtered across glomerular capillaries?_____

Answer: 60% (40% bound to plasma proteins)

Flashcard 5: What is the effect of postrenal azotemia on GFR? _____

Answer: Decreased GFR

Flashcard 6: What effect does decreased plasma protein concentration (GC) have on GFR? _____

Answer: Increased GFR

Flashcard 7: What does PGC represent in regards to GFR (fluid exchange)? _____

Answer: glomerular capillary hydrostatic pressure

Flashcard 8: What effect does increased plasma protein concentration (πGC) have on filtration fraction? _____

Answer: Decreased FF

Extra:  Watch associated Bootcamp video [https://app.bootcamp.com/med-school/nephrology/videos/fluid-and-filtration-physiology?index=4] https://onlinemeded.org/spa/renal/glomerular-filtration/acquire?ref=anki 

Flashcard 9: What is the effect of prerenal azotemia on GFR? _____

Answer: Decreased GFR

Extra:   Watch Renal Function Tests & Acute Kidney Injury (AKI) [https://dashboard.sketchy.com/study/medical/courses/medical-pathophysiology/units/medical-pathophysiology-renal/videos/medical-pathophysiology-renal-acute-kidney-injury-renal-function-tests-and-acute-kidney-injury-aki?utm_source=anki&utm_medium=partnership&utm_campaign=february_update&utm_content=medical] https://onlinemeded.org/spa/nephrology/acute-kidney-injury/acquire?ref=anki Other: Goljan: 

Flashcard 10: What effect does dehydration have on RPF? _____

Answer: Decreased RPF

Extra:  Watch associated Bootcamp video [https://app.bootcamp.com/med-school/nephrology/videos/fluid-and-filtration-physiology?index=4] https://onlinemeded.org/spa/renal/glomerular-filtration/acquire?ref=anki