3.16
If this was not the case use the R key to place the cursor under “No”
and confirm with the “↵” key on the keyboard. The two displays
shown on the left will then alternate.
In this case press the escape key “Esc” to exit the creatinine clear-
ance function and perform the creatinine measurement with predilut-
ed urine 1 + 20.
The start the calculation again.
If you have confirmed that the urine was prediluted 1 + 20 before the
measurement, enter the length of the urine collection interval in whole
hours and confirm with the “↵” key on the keyboard.
Enter the patient’s body weight in kg and confirm with the “↵” key on
the keyboard.
If you confirm with the “↵” key without making an entry here the
creatinine clearance will be calculated without taking into account
body weight or height.
If you have entered and confirmed the patient’s body weight you are
then asked to enter the patient’s height. Enter the height in cm and
confirm with the “↵” key on the keyboard.
The result of the creatinine clearance calculation is displayed, e.g.
115 ml/min.
The creatinine clearance is calculated according to the formula:
Creatinine clearance (ml/min/1.73 m
2
) = (U x Uvol x 1.73)/S x t x BSA
BSA = BW
0.425
x H
0.725
x 71.48 x 10
–4
U: Creatinine concentration in urine
Uvol: Volume of timed urine collection
t: Collection interval for urine
BSA: Body surface area
BW: Body weight
H: Height
CR E A T I NI N E C L EAR A N C E
UR I N E D IL 1 + 2 0 ? Ye s N o
CR E A T I NI N E C L EAR A N C E
DI L U T E SA M P L E
CR E A T I NI N E C L EAR A N C E
CO L L E C T. U R I N E h
CR E A T I NI N E C L EAR A N C E
BO D Y W E IG H T k g ?
CR E A T I NI N E C L EAR A N C E
HE I G H T cm ?
CR E A T I NI N E C L EAR A N C E
CR E A C L EA R . 1 1 5 ml / m i n
↕
To Next Page
Loading...