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Table 4 Impedance data (in Ohm) for frequencies and currents, with a fixed time of 10 min for stimulation and 30 min for collection

From: Pulsed direct and constant direct currents in the pilocarpine iontophoresis sweat chloride test

Frequency (Hz)*

Current (mA)#

0.5

0.75

1

1.5

0 (CDC)

11303.4 ± 5487.4

11339.3 ± 7507.5

8178.2 ± 2004.9

5685.5 ± 838.5

200

8615.9 ± 4763.1

6086.4 ± 1278.4

5995.3 ± 1592.9

4727.6 ± 562.7

1000

6787.3 ± 1997.8

4387.7 ± 703.0

4198.1 ± 2125.4

2975.2 ± 216.2

5000

6221.3 ± 1962.3

4480.2 ± 450.5

4462.3 ± 1848.2

3226.1 ± 159.6

  1. CDC, constant direct current; Hz, Hertz, mA, milliampere. *In the analysis considering the frequency in relation to the impedance, p-value = 0.0007; #In the analysis considering the current in relation to the impedance, p-value = 0.0003; for interaction between current and frequency in relation to the impedance, p-value = 0.9871.
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BMC Pulmonary Medicine

ISSN: 1471-2466

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