Title :
A new method for estimation of the left ventricular pressure-volume area
Author :
Barnea, Ofer ; Jaron, Dov
Author_Institution :
Biomed. Eng. & Sci. Inst., Drexel Univ., Philadelphia, PA, USA
Abstract :
A method is presented for obtaining the pressure-volume area (PVA) as defined by H. Suga and K. Sugawa (see Circ. Res., vol.32, p.314, 1973). The method allows calculation of the PVA from pressure and flow waveforms of ejecting beats and requires only one isovolumic ventricular contraction performed at any end-diastolic volume. The major advantages of the method are that it eliminates the requirement for a volume measurement and for repeated isovolumic beats. All the calculations are based on a normalized function obtained from a single isovolumic beat and pressure flow data for the ejecting beat of interest.
Keywords :
biological techniques and instruments; cardiology; flow measurement; haemodynamics; pressure measurement; ejecting beat; ejecting beats; end-diastolic volume; flow waveforms; isovolumic ventricular contraction; left ventricular pressure-volume area; normalized function; pressure flow data; pressure measurement; repeated isovolumic beats; single isovolumic beat; volume measurement; Animals; Biomedical engineering; Biomedical measurements; Energy conversion; Equations; Heart; Joining processes; Pressure measurement; Thyristors; Volume measurement; Animals; Cardiac Volume; Dogs; Models, Cardiovascular; Myocardial Contraction; Oxygen Consumption; Pressure; Species Specificity;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
