Instantaneous measurement of left and right ventricular stroke volume and pressure-volume relationships with an impedance catheter.
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چکیده
منابع مشابه
Instantaneous measurement of left and right ventricular stroke volume and pressure-volume relationships with an impedance catheter.
The feasibility of using continuous on-line recording of intraventricular electrical impedance to measure ventricular stroke volume was assessed in 12 patients at cardiac catheterization with a multielectrode impedance catheter and a 1.3 kHz measuring current of 4 microA. Stroke volumes determined by electrical impedance were compared with stroke volumes determined by the thermodilution techniq...
متن کاملHEMODYNAMICS AND VENTRICULAR FUNCTION Instantaneous measurement of left and right ventricular stroke volume and pressure - volume relationships with an impedance catheter
The feasibility of using continuous on-line recording of intraventricular electrical impedance to measure ventricular stroke volume was assessed in 12 patients at cardiac catheterization with a multielectrode impedance catheter and a 1.3 kHz measuring current of 4 ,A. Stroke volumes determined by electrical impedance were compared with stroke volumes determined by the thermodilution technique i...
متن کاملDIAGNOSTIC METHODS HEMODYNAMICS AND VENTRICULAR FUNCTION Instantaneous measurement of left and right ventricular stroke volume and pressure-volume relationships with an impedance catheter
The feasibility of using continuous on-line recording of intraventricular electrical impedance to measure ventricular stroke volume was assessed in 12 patients at cardiac catheterization with a multielectrode impedance catheter and a 1.3 kHz measuring current of 4 ,A. Stroke volumes determined by electrical impedance were compared with stroke volumes determined by the thermodilution technique i...
متن کاملLeft Ventricular Pressure-Volume Relationships
It has been shown in man that myocardial ischemia, whether precipitated by exercise or pacinginduced tachycardia, is associated with abnormalities of left ventricular end-diastolic pressure. There has been controversy as to whether this relationship is due to decreased myocardial compliance or to an increase in left ventricular volume as a manifestation of left ventricular failure. Simultaneous...
متن کاملRight ventricular volume measurement by conductance catheter.
Continuous ventricular volume measurement by the conductance method assumes a homogeneous electrical field dispersed throughout and contained within the ventricle. Because of dense trabeculation and complex geometry, right ventricular (RV) volume description by this method may be seriously compromised. This study sought to determine the accuracy and limitations of RV volume measurement by condu...
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ژورنال
عنوان ژورنال: Circulation
سال: 1984
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.69.4.703