35
Section 3: Sweat Induction and Analysis
14 Record the Result
A. With the sensor and black electrode in place, the display indicates sweat
contact with the first electrode within a few minutes.
After another 2 to 6 minutes (all timing is approximate, depending on the
initial sweat rate of the patient) the conductivity display should begin to
show continuous data (if Display Reading has been selected).
Simultaneously, the initial sweating rate in g/m
2
/min is displayed.
The Initial Sweat Rate will be reported as Not Valid if the black electrode is
removed before a value can be displayed. The result from the sweat test
remains accurate, though there will be no indication if at least 1 g/m
2
/min
sweat rate was achieved.
The Initial Sweat Rate will also be reported as Not Valid if calculated to be
>50 g/m
2
/min.
B.
The continuous data remains on display, and after 3 minutes, the display
shows that averaging has commenced. The time bar at the bottom of the
display indicates remaining time once sweat reaches the second electrode.
The mean electrolyte concentration is displayed after another 5 minutes.
This value is compared with the established conductivity ranges for children
under 16 years
(normal = below 50 mmol/L; equivocal = 50 to 80
mmol/L and CF = above 80 mmol/L)
for a diagnostic appraisal and
becomes the reported test result.
C.
Once the test is completed the display flashes “Complete” and the control
module emits a short beep. The date and time the test was completed is
displayed. Press ENTER to return to the main menu.
NOTE:
A patient should produce sufficient sweat within 30 minutes after
iontophoresis. If the Nanoduct does not detect sufficient sweat to report “Sweat at
First Electrode” within 30 minutes, or 30 minutes has elapsed between seeing
“Sweat at First Electrode” on the display and seeing sweat testing data appear
on the display, the test should be aborted due to insufficient sweat production.
Sweat Analysis
Electrolyte
Concentration
73 mmol/L eq NaCl
Initial Sweat Rate
6.1 g/m
2
/min
Sweat Analysis
Averaging
Concentration
61 mmol/L eq NaCl
Initial Sweat Rate
6.1 g/m
2
/min
Complete
Sweat Analysis
2019-04-15 12:20
Mean Electrolyte
Concentration
61 mmol/L eq NaCl
Initial Sweat Rate
6.1 g/m
2
/min
Содержание NANODUCT 1030
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