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Gewählte Publikation:

Publikationstyp: Zeitschriftenaufsatz
Dokumentart: Originalarbeit

Publikationsjahr: 2012

AutorInnen: Schramel, J; Nagel, C; Auer, U; Palm, F; Aurich, C; Moens, Y

Titel: Distribution of ventilation in pregnant Shetland ponies measured by Electrical Impedance Tomography.

Quelle: Respir Physiol Neurobiol. 2012; 180(2-3):258-262



Autor/innen der Vetmeduni Vienna:

Auer Ulrike
Aurich Christine
Moens Yves
Nagel Christina
Palm Franziska
Schramel Johannes

Beteiligte Vetmed-Organisationseinheiten
Universitätsklinik für Kleintiere, Klinische Abteilung für Anästhesiologie und perioperative Intensivmedizin
Universitätsklinik für Kleintiere, Klinische Abteilung für Geburtshilfe, Gynäkologie und Andrologie
Plattform Besamung und Embryotransfer


Abstract:
The regional distribution of ventilation in conscious standing pregnant Shetland pony mares was investigated by Electrical Impedance Tomography (EIT). Six ponies were repeatedly examined a minimum of four weeks prior to (antepartum, AP) until three weeks after parturition (postpartum, PP). From the cross-sectional ventilation image the ventral to dorsal (V/D), left to right (L/R) ventilation distribution ratio and the relative ventilation in four horizontal regions of interest (ROI) placed symmetrically in the chest was analyzed. Antepartum V/D was 0.74 ± 0.09 on day -28 ± 3 (AP28) and decreased to 0.68 ± 0.10 on day -3 ± 2 (AP3). Postpartum V/D increased significantly (p<0.05) to 0.96 ± 0.08 on day 7 ± 2 (PP7). The L/R ventilation distribution remains unaffected. Ventilation in the most ventral ROI was significantly lower on days AP28 and AP3 compared to PP7. These results suggest that in Shetland ponies late pregnancy compromises the ventilation in ventral (dependent) lung regions. We demonstrated the feasibility of a repeated EIT measurement in standing conscious ponies.

Keywords Pubmed: Animals
Body Weight
Cross-Sectional Studies
Electric Impedance*
Female
Gravitation
Horses/physiology*
Lung/physiology
Postpartum Period
Pregnancy
Pregnancy, Animal/physiology*
Pulmonary Ventilation/physiology*
Tidal Volume
Tomography


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