2021
Arterial load and right ventricular-vascular coupling in pulmonary hypertension
Oakland H, Joseph P, Naeije R, Elassal A, Cullinan M, Heerdt PM, Singh I. Arterial load and right ventricular-vascular coupling in pulmonary hypertension. Journal Of Applied Physiology 2021, 131: 424-433. PMID: 34043473, PMCID: PMC8325619, DOI: 10.1152/japplphysiol.00204.2021.Peer-Reviewed Original ResearchConceptsPulmonary artery hypertensionRV-PA uncouplingPulmonary vascular resistancePressure waveform analysisRight ventriclePulmonary vascular impedancePulmonary hypertensionVascular impedanceRight heart catheterization dataRight ventricular-vascular couplingRV-pulmonary arterial couplingCpc-PH groupEjection fraction patientsHeart catheterization dataRV pressure curveRV-PA couplingLeft heart diseaseVentricular-vascular couplingSex-matched controlsAfterload parametersCpc-PHIpc-PHPH-HFpEFRV afterloadArtery hypertension
2020
Fick principle and exercise pulmonary hemodynamic determinants of the six‐minute walk distance in pulmonary hypertension
Joseph P, Oliveira RKF, Eslam RB, Agarwal M, Waxman AB, Systrom DM. Fick principle and exercise pulmonary hemodynamic determinants of the six‐minute walk distance in pulmonary hypertension. Pulmonary Circulation 2020, 10: 1-9. PMID: 32994925, PMCID: PMC7502687, DOI: 10.1177/2045894020957576.Peer-Reviewed Original ResearchSix-minute walk distanceSix-minute walk testWalk distancePulmonary hypertensionOxygen deliveryCardiac reserveWalk testHemodynamic determinantsFick principleMixed venous blood samplesDepressed cardiac indexRight heart afterloadPulmonary vascular resistanceRight heart catheterizationRight ventricular afterloadStroke volume indexTotal pulmonary resistancePulmonary artery catheterPulmonary vascular pressuresSystemic oxygen deliveryVenous blood samplesImpaired oxygen deliveryFick cardiac outputCardiac indexHeart catheterization