@phdthesis{Demerath2019,
  author    = {Demerath, Antonia},
  title     = {Evaluation der Wertigkeit des Schweißtestes nach Gibson und Cooke zur Diagnose einer Mukoviszidose bei Patienten mit Trisomie 21},
  doi       = {10.25972/OPUS-18898},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-188988},
  school      = {Universit{\"a}t W{\"u}rzburg},
  year      = {2019},
  abstract  = {Menschen mit Trisomie 21 weisen h{\"a}ufig eine Gedeihst{\"o}rung und eine erh{\"o}hte Infektanf{\"a}lligkeit auf, weswegen im klinischen Alltag nicht selten ein Schweißtest zum Ausschluss einer Mukoviszidose (CF) durchgef{\"u}hrt werden muss. In der Literatur gibt es Hinweise, dass bei Patienten mit Trisomie 21 eine erh{\"o}hte Schweißosmolalit{\"a}t vorliegt, was zu falsch positiven Schweißtestuntersuchungen f{\"u}hren k{\"o}nnte. Bisher gab es keine Studie dar{\"u}ber, ob die Chlorid(Cl)-Messung im Schweiß bei Patienten mit Trisomie 21 zum Ausschluss einer CF herangezogen werden kann. Diese Studie stellt nun die Schweißsekretionsrate, sowie die Chlorid-Konzentration in Schweißproben von Probanden mit Trisomie 21 der von Kontrollpersonen gegen{\"u}ber.},
  subject      = {Down-Syndrom},
  language  = {de}
}
@article{RufDemerathHebestreitetal.2018,
  author    = {Ruf, Katharina and Demerath, Antonia and Hebestreit, Helge and Kunzmann, Steffen},
  title     = {Is sweat testing for cystic fibrosis feasible in patients with down syndrome?},
  series = {BMC Pulmonary Medicine},
  volume    = {18},
  journal   = {BMC Pulmonary Medicine},
  number    = {8},
  doi       = {10.1186/s12890-018-0580-1},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-175519},
  year      = {2018},
  abstract  = {Background: Recurrent airway infections are common in patients with Down's syndrome (DS). Hence, ruling out Cystic Fibrosis (CF) in these patients is often required. In the past, the value of sweat testing the gold standard to diagnose CF -has been questioned in DS as false positive results have been reported. However, these reports are based on measurements of sweat osmolality or sodium concentrations, not chloride concentrations. This study analyses sweat secretion rate and chloride concentration in sweat samples of patients with DS in comparison to healthy controls. Methods: We assessed sweat samples in 16 patients with DS and 16 healthy controls regarding sweat secretion rate (SSR) and sweat chloride concentration. Results: All measured chloride concentrations were within the normal range. The chloride concentrations were slightly, but not significantly lower in patients with DS (15,54 mmol/l (±4,47)) compared to healthy controls (18,31 mmol/l (±10,12)). While no gender gap in chloride concentration could be found, chloride concentration increased with age in both groups. Insufficient sweat was collected in 2 females with DS (12.5\% of the study group) but not in an individual of the control group. A significant lower sweat secretion rate was found in the DS group (27,6 μl/30 min (± 12,18)) compared to the control group (42,7 μl/30 min (± 21,22)). In a sub-analysis, female patients produced significantly less sweat (20,8 ± 10,6 μl/30 min) than male patients with DS (36,4 ± 7,8 μl/30 min), which accounts for the difference between patients and controls. Furthermore, while the sweating secretion rate increased with age in the control group, it did not do so in the DS group. Once again this was due to female patients with DS, who did not show a significant increase of sweat secretion rate with age. Conclusions: Sweat chloride concentrations were within the normal range in patients with DS and therefore seem to be a reliable tool for testing for CF in these patients. Interestingly, we found a reduced sweat secretion rate in the DS group. Whether the last one has a functional and clinical counterpart, possibly due to a disturbed thermoregulation in DS patients, requires further investigation.},
  language  = {en}
}