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urology pnn
| Question | Answer |
|---|---|
| Na | 136-145 meq/l |
| Cl | 90-110 meq/l |
| Potassium | 3.5-5 meq/l |
| BUN | 10-20 mg/dl |
| Creatinine (Women) | 0.5-1.1 mg/dl |
| Creatinine (Men) | 0.6-1.2 mg/dl |
| Critical BUN | >100 mg/dl |
| Critical Creatinine | >4 mg/dl |
| two substances not reabsorbed by the kidneys | BUN and Creatinine |
| What is the BUN? | Blood urea nitrogen. Urea=product of protein metabolism usually excreted by the kidneys. Increased values could indicate renal function abnormalities. |
| What can increased blood levels of BUN signify? | azotemia, uremia, renal dx, decreased reanal blood flow, high PRO diet, starvation-->fat stores used up; breaking down protein. |
| What is Creatinine? | catabolic product of creatine phosphatase-->skeletal muscle contraction. Normally excreted by the kidneys |
| Creatinine reliable b/c | muscle mass of person fluctuates very little: Directly proportional to GFR |
| What is Glomerular filtration | process in which fluid and solutes move from blood in the glomerulus into Bowman's capsule. |
| What is GFR? | Glomurular Filtration Rate: amount of fluid filtered from the blood into Bowman's per minute. 125ml/min. |
| Primary factors controlling GFR | Blood pressure and blood volume |
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