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Class 2. Impairment of the Whole Person, 15—34% Diminution of upper-urinary-tract function is present as evidenced by creatinine clearance of 60 to 75 liters/24 hr. (42 to 52 mI/min.), or PSP excretion of 10% to 15% in 15 minutes. or Although creatinine clearance is greaterthan 75 liters/24 hr (52 ml/mm.), or PSP excretion is more than 15% in 15 minutes, symptoms and signs of upper-urinary-tract disease or dysfunction necessitate continuous surveillance and frequent treatment.
Class 3. Impairment of the Whole Person, 35—64%Diminution of upper-urinary-tract function is present as evidenced by creatinine clearance of 40 to 60 liters/24 hr. (28 to 42 mI/min.), or PSP excretion of 5% to 10% in 15 minutes.orAlthough creatinine clearance is 60 to 75 liters/24 hr (42 to 52 mI/min.), or PSP excretion is 10% to 15% in 15 minutes, symptoms and signs of upper-urinary-tract-disease or dysfunction are incompletely controlled by surgical or continuous medical treatment.
Class 4. Impairment of the Whole Person, 65—90%Diminution of upper-urinary tract function is present as evidenced by creatinine clearance below 40 liters/24 hr (28 mI/mm.), or PSP excretion below 5% in 15 minutes. or Although creatinine clearance is 40 to 60 liters/24 hr (28 to 42 mI/mm.), or PSP excretion is 5% to 10% in 15 minutes, symptoms and signs of upper-urinary-tract disease or dysfunction persists despite surgical or continuous medical treatment.
NOTE: The individual with a solitary kidney, regardless of cause, should be rated as having 10% impairment of the whole person. This value is to be combined with any other permanent impairment (including any impairment in the remaining kidney) pertinent to the case under consideration. The normal ranges of creatinine clearance are: Males: 130 to 200 liters/24 hr (90 to 139 mI/min.), Females: 115 to 180 liters/24 hr (80 to 125 mI/mm.). The normal PSP excretion is 25% or more in urine in 15 minutes.
URINARY DIVERSION Permanent, surgically created forms of urinary diversion usually are provided to compensate for anatomic loss and to allow for egress of urine. They are evaluated as a part of, and in conjunction with, the assessment of the involved portion of the urinary tract.Irrespective of how well these diversions function in the preservation of renal integrity and the disposition of urine, the following values for the diversions should be combined with those determined under the criteria previously given for the portion of the urinary tract involved.
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