2017
Exercise Intolerance in Heart Failure With Preserved Ejection Fraction
Houstis N, Eisman A, Pappagianopoulos P, Wooster L, Bailey C, Wagner P, Lewis G. Exercise Intolerance in Heart Failure With Preserved Ejection Fraction. Circulation 2017, 137: 148-161. PMID: 28993402, PMCID: PMC5760316, DOI: 10.1161/circulationaha.117.029058.Peer-Reviewed Original ResearchConceptsCardiopulmonary exercise testingExercise capacityCardiac outputExercise intoleranceHeart failurePathway defectsDiffusing capacityExercise testMechanisms of exercise intolerancePeak VO<sub>2</sub>Patient's cardiac outputSymptoms of HFpEFBody mass indexPatient's exercise capacityEjection fractionHFpEFMass indexInvasive monitoringPatient's defectRelative to controlsBlood gasesMultiple defectsPatientsComorbid defectsDisease heterogeneity
2014
Mechanisms of Exercise Intolerance in Heart Failure With Preserved Ejection Fraction
Dhakal B, Malhotra R, Murphy R, Pappagianopoulos P, Baggish A, Weiner R, Houstis N, Eisman A, Hough S, Lewis G. Mechanisms of Exercise Intolerance in Heart Failure With Preserved Ejection Fraction. Circulation Heart Failure 2014, 8: 286-294. PMID: 25344549, PMCID: PMC5771713, DOI: 10.1161/circheartfailure.114.001825.Peer-Reviewed Original ResearchConceptsHeart failureExercise capacityEjection fractionC(a-v)O2Peripheral O2 extractionMechanisms of exercise intoleranceElevated systemic blood pressureIV heart failureReduced ejection fractionCardiac filling pressuresInvasive hemodynamic monitoringMaximum incremental cardiopulmonary exercise testingPeripheral microvascular functionPeak respiratory exchange ratioSystemic blood pressureImpaired exercise capacityO2 extractionPredictors of peak VO2Cardiopulmonary exercise testingIncremental cardiopulmonary exercise testImpairing O2 extractionNYHA IIPeak heart ratePeak oxygen uptakeIntrinsic abnormality