title: Impairment of ventilatory efficiency in heart failure.
authors.forename: A L
authors.initials: AL
authors.lastname: Clark
mesh_terms: D000367:Age Factors; D005080:Exercise Test; D017079:Exercise Tolerance; D005500:Follow-Up Studies; D006333:Heart Failure / Q000150:complications / Q000175:diagnosis / Q000503:physiopathology*; D006801:Humans; D008875:Middle Aged; D018579:Patient Selection; D011237:Predictive Value of Tests; D012123:Pulmonary Ventilation; D012018:Reflex; D012129:Respiratory Function Tests; D018487:Ventricular Dysfunction, Left / Q000150:complications / Q000503:physiopathology