Impedance cardiography. The impact of new technology.

  title={Impedance cardiography. The impact of new technology.},
  author={Lester Critchley},
  volume={53 7},
The 1990s have witnessed major advances in impedance cardiography technology. Problems existed with the methods used to calculate cardiac output. Excessive lung fluid, as often found in critically ill patients, may also invalidate measurements. The signal processing and measurement techniques used in older systems were deficient. The newer systems, of which there are at least six, incorporate novel and improved signal processing techniques. They also offer analog visual displays, personal… CONTINUE READING
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