Right atrial pressure-volume relationships in tricuspid regurgitation.

  title={Right atrial pressure-volume relationships in tricuspid regurgitation.},
  author={M. J. Miller and R G Mckay and James E. Ferguson and P Sahagian and Shoichiro Nakao and Patricia C. Come and William M. Grossman},
  volume={73 4},
Pressure-volume relationships in the right atrium were examined before and after the creation of acute experimental tricuspid regurgitation in pigs. A 1.3 kHz multielectrode impedance catheter with a measuring current of 4 mA was used to determine instantaneous right atrial pressure and relative blood volume; right atrial dimension was assessed simultaneously with ultrasonic crystals attached to the atrial walls. Impedance volume waveforms and ultrasonic crystal dimensions closely paralleled… CONTINUE READING
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