Pneumologie 2025; 79(S 01): S78
DOI: 10.1055/s-0045-1804711
Abstracts
C2 – Chronische respiratorische Insuffizienz und außerklinische Beatmung

Effect of Nasal high flow (NHF) on Right hearth function in stable patients with pulmonary hypertension different WHO classes

Authors

  • J Bräunlich

    1   Klinikum Emden; Klinik für Pneumologie und Beatmungsmedizin

  • H Seyfarth

    2   Universitätsklinikum Leipzig Aör; Dep. Innere Medizin und Dermatologie; Abt. Pneumologie

  • H Wirtz

    3   Abt. Pneumologie, Universitätsklinikum Leipzig; Pneumologie und Beatmungsmedizin
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    Background: Nasal high flow (NHF) has various effects on the respiratory system in acute and chronic conditions. There are initial reports that NHF is also able to influence cardiac function in acute decompensation. This study was designed to clarify whether NHF has an influence on the right heart in stable patients with chronic pulmonary hypertension.

    Methods: Forty-one stable patients from different pulmonary hypertension (PH) WHO classes were recruited. Most patients were assigned to WHO classes 1 and 3. All received a right heart catheterization and blood gas analysis. Oxygenation was kept constant. The mean pulmonary arterial pressure (mPAP), wedge pressure (PC), cardiac output (CO), diastolic pulmonary gradient (DPG), pulmonary arterial resistance (PVR) and other parameters were determined. The patients then used NHF at 35 L/min for 20 min, after which the right heart catheter measurements were repeated with ongoing NHF therapy.

    Results: In the entire cohort and in the subgroups, there were no changes in right heart function or cardiac ejection fraction. The blood gases did not change either.

    Conclusions: Thus, there is no effect of NHF on right heart function in stable patients with PH.


     

    Publication History

    Article published online:
    18 March 2025

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