If the rate of urine formation is 2 ml/min, the urine inulin concentration is 25 mg/ml, and the plasma inulin concentration 0.5 mg/ml, then the GFR is 6.25 mL/min None of the choices are correct. (c) 0.04 mL/min D) 100 mL/min E) more data is needed to calculate the GFR
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A: To answer this question we should have knowledge of physiology and biochemistry.
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- If a patient collects a 24 hour urine specimen with a volume of 1500 mL, and the patient's serum Creatinine is 5 mg/dl, and the urine creatinine is 100 mg/dl, then what is the creatinine clearance in ml/min?A creatinine clearance is done on a patient with the following results: serum creatinine, 0.6 mg/dL; urine creatinine, 102 mg/dL; urine volume, 1650 mL/24 hours; body surface area, 1.93 m2. Based on the information from calculations above, which of the following is the best interpretation of this patient's creatinine clearance results? 1) Within the normal range 2) Above normal, probably because the 24-hr urine collection was not completed correctly 3) Above normal 4) Below normal no references, just homeworkWrite the equation for the calculation of net filtration pressure (NFP), and explain the meaning of each term.
- A uremic patient has a urine output of 1.8 L/24 h and an average creatinine concentration of 2.2 mg/dL. What is the creatinine clearance? How would you adjust the dose of a drug normally given at 20 mg/kg every 6 hours in this patient (assume the urine creatinine concentration is 0.1 mg/mL and creatinine clearance is 100 mL/min)?How are CFU (colony forming units) calculated in urine? (Hint/comment: what is the volume in urine cultures)A 65-kg man is participating in a research study for which it is necessary to know the volumes of his body fluid compartments. To measure these volumes, the man is injected with 100 mCi (millicurie) of H20 and 500 mg of mannitol. During a 2-hour equilibration period, he excretes 10% of the H,0 and 10% of the mannitol in his urine. Following equilibration, the concentration of H,0 in plasma is 0.213 mCi/100 mL and the concentration of mannitol is 3.2 mg/100 mL. What is his total body water, his ECF volume, and his ICF volume? Is the man's total body water appropriate for his weight?
- Z10 @ لا يوجد SIM السؤال If we denote directly proportional with "D" and inversely proportional with "I", the best answer for the relationship between the pH of the urine and the following parameters (ionization of acidic toxicant-ionization of alkaline toxicant-reabsorption of acidic toxicant-reabsorption of alkaline toxicant) will be O D-I-I-D O D-I-D-D O D-D-I-I O D-D-I-D حفظ الإجابةA 65-kg man is participating in a research study for which it is necessary to know the volumes of his body fluid compartments. To measure these volumes, the man is injected with 100 mci (millicurie) of H0 and 500 mg of mannitol. During a 2-hour equilibration period, he excretes 10% of the H,0 and 10% of the mannitol in his urine. Following equilibration, the concentration of H,0 in plasma is 0.213 mCi/100 ml and the concentration of mannitol is 3.2 mg/100 mL. • What is his total body water, his ECF volume, and his ICF volume? is the man's total body water appropriate for his weight?Given: For urea, the rate of excretion equals to the GFR times the urea concentration in plasma. (A) If the urea concentration in plasma is 4.5 mmol/l, what GFR (in l/day) would correspond to an excretion rate of 450 mmol/day. (B) If the urea clearance is 70 ml/min and the GFR is 125 ml/min, what fraction of urea is being reabsorbed. (answer A and B)
- The laboratory received a 24-hour urine collection from a 26-year old male (body surface area = 2.34m2), and the total urine collection volume measured 800 mL in 24 hours. After creatinine determinations were performed by the alkaline picrate method, interpret the result. Plasma creatinine: 1.2 mg/dL Urine creatinine: 150 mg/dL a. The creatinine clearance of the patient is above reference range. b. The creatinine clearance of the patient is below reference range. c. The creatinine clearance of the patient is within reference range. d. The creatinine clearance of the patient is borderline high.The normal glomerular filtration rate in the following results is: 1) 2 ml/min, 2) 125 ml/min 3) 800 ml/min 4) 1,200 ml/minCalculate net filtration pressure given the following values: glomerular hydrostatic pressure = 50 mm Hg, blood colloid osmotic pressure = 25 mm Hg, capsular hydrostatic pressure = 20 Hg.
