Feasibility and normal values of an integrated conductivity (Nanoduct™) sweat test system in healthy newborns.

Kuehni, Claudia E; Schindler, Matthias; Mazur, Agnieszka; Malzacher, Andreas; Hornung, René; Barben, Juerg (2017). Feasibility and normal values of an integrated conductivity (Nanoduct™) sweat test system in healthy newborns. Journal of cystic fibrosis, 16(4), pp. 465-470. Elsevier 10.1016/j.jcf.2017.04.002

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BACKGROUND

Nanoduct™ is a simple and practical sweat analysis system measuring conductivity in situ. It requires only three microlitres of sweat, making it especially applicable to newborns.

METHODS

We measured conductivity in 260 healthy term infants at the age of four days, and again at four weeks to determine the proportion of successful tests, test duration, and normal values for sweat conductivity in newborns.

RESULTS

Sufficient sweat was collected in 159/260 of four-day olds (61%), and in 225/239 of four-week olds (94%). Mean (sd) test duration was 27 (5) and 25 (5) min. Mean (sd, range) conductivity was 53mmol/l (16, 8-114) at age four days, and 36 (9, 12-64) at four weeks.

CONCLUSIONS

Determination of sweat conductivity using Nanoduct™ cannot be recommended for four-day old newborns. However, at the age of four weeks the success rate is high (94%), and conductivity values at that age are comparable to older healthy children.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Pre-clinic Human Medicine > Institute of Social and Preventive Medicine (ISPM)

UniBE Contributor:

Kühni, Claudia and Schindler, Matthias

Subjects:

600 Technology > 610 Medicine & health
300 Social sciences, sociology & anthropology > 360 Social problems & social services

ISSN:

1569-1993

Publisher:

Elsevier

Language:

English

Submitter:

Doris Kopp Heim

Date Deposited:

27 Apr 2017 09:06

Last Modified:

22 Oct 2019 16:58

Publisher DOI:

10.1016/j.jcf.2017.04.002

PubMed ID:

28442278

Uncontrolled Keywords:

Conductivity Cystic fibrosis Newborn screening Sweat test

BORIS DOI:

10.7892/boris.99537

URI:

https://boris.unibe.ch/id/eprint/99537

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