Following surgery to correct a massive hemorrhage, a 55-year-old patient exhibits oliguria and edema. Blood test results indicate increasing azotemia and electrolyte imbalance. The glomerular filtration rate is 20 mL/min. Urinalysis results are as follows: COLOR: Yellow KETONES: Negative CLARITY: Cloudy BLOOD: Moderate GRAVITY: 1.010 BILIRUBIN: Negative pH: 7.0 UROBILINOGEN: Normal PROTEIN: 3+ NITRITE: Negative GLUCOSE: 2+ LEUKOCYTE: Negative Microscopic: 50–60 RBCs/hpf 2–3 granular casts/lpf 3–6 WBCs/hpf 2–3 RTE cell casts/lpf 3–4 RTE cells/hpf 0–1 waxy casts/lpf 0–1 broad granular casts/lpf What diagnosis do the patient’s history and laboratory results suggest? What is the most probable cause of the patient’s disorder? Is this considered to be of prerenal, renal, or postrenal origin?
Following surgery to correct a massive hemorrhage, a 55-year-old patient exhibits oliguria and edema. Blood test results indicate increasing azotemia and electrolyte imbalance. The glomerular filtration rate is 20 mL/min. Urinalysis results are as follows: COLOR: Yellow KETONES: Negative CLARITY: Cloudy BLOOD: Moderate GRAVITY: 1.010 BILIRUBIN: Negative pH: 7.0 UROBILINOGEN: Normal PROTEIN: 3+ NITRITE: Negative GLUCOSE: 2+ LEUKOCYTE: Negative Microscopic: 50–60 RBCs/hpf 2–3 granular casts/lpf 3–6 WBCs/hpf 2–3 RTE cell casts/lpf 3–4 RTE cells/hpf 0–1 waxy casts/lpf 0–1 broad granular casts/lpf What diagnosis do the patient’s history and laboratory results suggest? What is the most probable cause of the patient’s disorder? Is this considered to be of prerenal, renal, or postrenal origin?
Chapter15: The Urinary System
Section: Chapter Questions
Problem F1CRE
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Question
Following surgery to correct a massive hemorrhage, a 55-year-old patient exhibits oliguria and edema. Blood test results indicate increasing azotemia and electrolyte imbalance. The glomerular filtration rate is 20 mL/min. Urinalysis results are as follows:
COLOR: Yellow
CLARITY: Cloudy
BLOOD: Moderate
GRAVITY: 1.010
BILIRUBIN: Negative
pH: 7.0
UROBILINOGEN: Normal
PROTEIN: 3+
NITRITE: Negative
GLUCOSE: 2+
LEUKOCYTE: Negative
Microscopic: 50–60 RBCs/hpf
2–3 granular casts/lpf
3–6 WBCs/hpf
2–3 RTE cell casts/lpf
3–4 RTE cells/hpf
0–1 waxy casts/lpf
0–1 broad granular casts/lpf
- What diagnosis do the patient’s history and laboratory results suggest?
- What is the most probable cause of the patient’s disorder? Is this considered to be of prerenal, renal, or postrenal origin?
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