Search results for "Hydrogen-Ion Concentrations"

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Exercise hyperventilation in chronic heart failure is not caused by systemic lactic acidosis

2005

Background: Patients with heart failure have an abnormally high ventilatory response to exercise associated with gas exchange defects and reduced arterial pCO2. Aims: We examined the possibility of lactic acidosis as the stimulus to this increased ventilation that abnormally depresses pCO2 during exercise in heart failure. Method and results: We studied 18 patients with chronic heart failure. We measured VE/VCO2 slope during exercise, arterial blood gases and lactate concentrations during cardiopulmonary exercise testing (rest, peak exercise and one minute after the end of exercise). Neither VE/VCO2 slope nor arterial pCO2 were related to arterial lactate concentrations at peak exercise (r=…

Malemedicine.medical_specialtypCO2Internal medicineHyperventilationmedicineHumansHyperventilationArterial pCO2AcidosisHeart FailureExercise Tolerancebusiness.industryMiddle AgedHydrogen-Ion Concentrationsmedicine.diseaseHeart failureLactic acidosisExercise TestCardiologyPhysical therapyArterial bloodAcidosis LacticFemaleBlood Gas Analysismedicine.symptomCardiology and Cardiovascular Medicinebusinesscirculatory and respiratory physiologyEuropean Journal of Heart Failure

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