[Drop in oxygen saturation and blood pressure as well as increase

Der Internist · Apr 2022

Case Reports

[Drop in oxygen saturation and blood pressure as well as increase in central venous pressure during mitral valve clipping in an 81-year-old female patient].

Atrial septal defects (ASD) following endovascular mitral valve clipping are potentially hemodynamically relevant complications. Immediate closure with an occluder can represent a safe and effective treatment. An 81-year-old female patient suffering from severe dyspnea due to previously known severe mitral valve regurgitation was scheduled for elective mitral valve clipping. The clip was successfully implanted. Removal of the transseptal cannula resulted in a sudden drop in oxygen saturation and systolic blood pressure as well as an immediate increase in central venous pressure. An iatrogenic left-right shunt was observed at the atrial level with a relevant shunt volume. Immediate closure using an atrial septal occluder successfully restored the oxygen saturation and hemodynamic parameters. ⋯ An increase in central venous pressure, reduction of systolic blood pressure or oxygen saturation after withdrawal of the transseptal cannula during mitral valve clipping should always be further investigated regarding a possible ASD.

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- Martin J Volz, Matthias Aurich, Mathias Konstandin, Hugo A Katus, Norbert Frey, Michael M Kreusser, and Philip W Raake.
- Klinik für Innere Medizin III, Abteilung für Kardiologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Deutschland. martin.volz@med.uni-heidelberg.de.
- Internist (Berl). 2022 Apr 1; 63 (4): 448-452.
BackgroundAtrial septal defects (ASD) following endovascular mitral valve clipping are potentially hemodynamically relevant complications. Immediate closure with an occluder can represent a safe and effective treatment. An 81-year-old female patient suffering from severe dyspnea due to previously known severe mitral valve regurgitation was scheduled for elective mitral valve clipping. The clip was successfully implanted. Removal of the transseptal cannula resulted in a sudden drop in oxygen saturation and systolic blood pressure as well as an immediate increase in central venous pressure. An iatrogenic left-right shunt was observed at the atrial level with a relevant shunt volume. Immediate closure using an atrial septal occluder successfully restored the oxygen saturation and hemodynamic parameters.ConclusionAn increase in central venous pressure, reduction of systolic blood pressure or oxygen saturation after withdrawal of the transseptal cannula during mitral valve clipping should always be further investigated regarding a possible ASD.© 2022. The Author(s).

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[Drop in oxygen saturation and blood pressure as well as increase in central venous pressure during mitral valve clipping in an 81-year-old female patient].

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