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Verfasst von:Eichinger, Monika [VerfasserIn]   i
 Walterspacher, Stephan [VerfasserIn]   i
 Scholz, Tobias [VerfasserIn]   i
 Tetzlaff, Ralf [VerfasserIn]   i
 Puderbach, Michael [VerfasserIn]   i
 Tetzlaff, Kay [VerfasserIn]   i
 Kopp-Schneider, Annette [VerfasserIn]   i
 Ley, Sebastian [VerfasserIn]   i
 Choe, Kyuok [VerfasserIn]   i
 Kauczor, Hans-Ulrich [VerfasserIn]   i
 Sorichter, Stephan [VerfasserIn]   i
Titel:Glossopharyngeal insufflation and pulmonary hemodynamics in elite breath hold divers
Verf.angabe:Monika Eichinger, Stephan Walterspacher, Tobias Scholz, Ralf Tetzlaff, Michael Puderbach, Kay Tetzlaff, Annette Kopp-Schneider, Sebastian Ley, Kyuok Choe, Hans-Ulrich Kauczor, and Stephan Sorichter
E-Jahr:2010
Jahr:September 2010
Umfang:8 S.
Fussnoten:Gesehen am 02.03.2023
Titel Quelle:Enthalten in: Medicine and science in sports and exercise
Ort Quelle:Philadelphia, Pa. : Lippincott Williams & Wilkins, 1969
Jahr Quelle:2010
Band/Heft Quelle:42(2010), 9, Seite 1688-1695
ISSN Quelle:1530-0315
Abstract:Purpose: Acute voluntary lung hyperinflation provoked by glossopharyngeal insufflation (GI) elicits numerous, possibly deleterious, effects on the cardiopulmonary system by increasing intrathoracic pressures far above normal values. This study quantifies acute pulmonary hemodynamics during GI using phase-contrast magnetic resonance imaging (MRI). - Methods: Hemodynamic parameters were measured in nine elite male breath hold divers with a mean age of 30 yr (range = 20-43 yr) by velocity-encoding cine (VEC)-MRI of the main pulmonary artery (PA) before, during, and after GI. Simultaneously, GI-lung volume (GIVEC-MRI) was measured by MR-compatible spirometry. - Results: Hemodynamic parameters were associated with GIVEC-MRI. Highly significant changes during GI were shown for the mean flow in the PA, which decreased by 45% (P < 0.007), and right ventricular output and cardiac index, which decreased by 41% and 40%, respectively (P < 0.007). Acceleration time also decreased highly significant by 36% during GI (P < 0.007). All hemodynamic parameters except acceleration time returned to baseline after GI. - Conclusions: Acute voluntary lung hyperinflation mimics changes seen in pulmonary arterial hypertension, but unlike the latter, these changes are fully reversible shortly after cessation of voluntary lung hyperinflation. Persistent changes due to repetitive GI could not be detected.
DOI:doi:10.1249/MSS.0b013e3181d85dc3
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext: https://doi.org/10.1249/MSS.0b013e3181d85dc3
 Volltext: https://journals.lww.com/acsm-msse/Fulltext/2010/09000/Glossopharyngeal_Insufflation_and_Pulmonary.11.aspx
 DOI: https://doi.org/10.1249/MSS.0b013e3181d85dc3
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1837975795
Verknüpfungen:→ Zeitschrift

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