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Left-to-Right Shunt Detection by an Intravascular Electrode with Hydrogen as an Indicator
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1959
Year
Heart FailureEngineeringBiomedical EngineeringHydrogen GasPlatinum Black-tipped CatheterPulmonary MembraneElectrophysiological EvaluationBlood Flow MeasurementCardiologyCardiovascular ImagingPulmonary CirculationIntravascular ElectrodeLeft-to-right Shunt DetectionBioinstrumentationBioelectronicsPhysiologyElectrophysiologyMedicineAnesthesiology
Hydrogen gas crosses the pulmonary membrane and dissolves in blood, and it therefore appears immediately and in high concentration in the left heart and later and in lower concentration in the right heart. The hydrogen-sensing, platinum black-tipped catheter is uniquely sensitive in detecting the left-to-right shunts.