Forskning
Udskriv Udskriv
Switch language
Region Hovedstaden - en del af Københavns Universitetshospital
Udgivet

Exercise cardiovascular magnetic resonance imaging allows differentiation of low-risk pulmonary arterial hypertension

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  1. Initial bridge to transplant experience with a bioprosthetic autoregulated artificial heart

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  2. Felodipine and renal function in lung transplantation: A randomized placebo-controlled trial

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  1. Lung Ultrasound to Phenotype Chronic Lung Allograft Dysfunction in Lung Transplant Recipients. A Prospective Observational Study

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  2. Prevalence of Bicuspid Aortic Valve and Associated Aortopathy in Newborns in Copenhagen, Denmark

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  3. Biomarkers and Their Relation to Cardiac Function Late After Peripartum Cardiomyopathy

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  4. Echocardiographic abnormalities and predictors of mortality in hospitalized COVID-19 patients: the ECHOVID-19 study

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Vis graf over relationer

BACKGROUND: Patients with pulmonary arterial hypertension (PAH) have a decreased ability to compensate for demands on increased cardiac output, such as during exercise. In this study we aimed to differentiate cardiac exercise responses in patients with PAH, stratified according to known measurements of disease severity.

METHODS: Right and left ventricular end-diastolic volume and end-systolic volume, stroke volume (SV), and cardiac output were measured in 20 patients with PAH and a lower risk of mortality with 6-month intervals using cardiovascular magnetic resonance (CMR) imaging during rest and during ergometer exercise (totaling 44 scans). Exercise measurements were compared with resting cardiac conditions and clinical assessment using mixed model statistics.

RESULTS: SV response during exercise was associated with disease severity. World Health Organization functional class (WHO FC) I and right ventricular end-diastolic volume (RVEDV) <221 ml were associated with increased SV during exercise (WHO FC I: 7% increase in SV; p < 0.001). In contrast, WHO FC II was associated with an 8% decrease in SV (p = 0.02), and SV response declined progressively with right ventricular dilation (7-ml decrease in SV per 100-ml increase in RVEDV; p < 0.001).

CONCLUSIONS: Assessment of right ventricular function with CMR during exercise stratifies patients currently perceived as having a low risk of mortality into different degrees of right ventricular inotropic reserve. Reduced SV during exercise is a plausible factor to increased risk of decompensation, possibly warranting targeted therapy intensification to restore right ventricular functional reserve.

OriginalsprogEngelsk
TidsskriftThe Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation
Vol/bind38
Udgave nummer6
Sider (fra-til)627-635
Antal sider9
ISSN1053-2498
DOI
StatusUdgivet - 1 jun. 2019

Bibliografisk note

Copyright © 2019 International Society for Heart and Lung Transplantation. Published by Elsevier Inc. All rights reserved.

ID: 57663776