Seismocardiography for monitoring changes in left ventricular function during ischemia.

@article{Salerno1991SeismocardiographyFM,
  title={Seismocardiography for monitoring changes in left ventricular function during ischemia.},
  author={David M. Salerno and John M. Zanetti},
  journal={Chest},
  year={1991},
  volume={100 4},
  pages={
          991-3
        }
}
Seismocardiography is a new noninvasive technique for recording cardiac vibrations. Changes in the recorded waves have been correlated with acute and chronic changes in left ventricular function. In this report, we describe a patient who developed ischemia induced by coronary angiography in the cardiac catheterization laboratory. The patient's seismocardiogram showed distinct changes during the ischemic episode that actually preceded the onset of symptoms and resolved after nitroglycerin… 

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TLDR
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...

References

SHOWING 1-6 OF 6 REFERENCES

Noninvasive Diagnosis of Coronary Artery Disease: The CardiokymographicStress Test

TLDR
It is concluded that CKG helps identify falsepositive and false–negative ECG stress tests and improves the diagnostic accuracy of stress testing for detection of coronary artery disease.

Accuracy of cardiokymography during exercise testing: results of a multicenter study.

  • D. Weiner
  • Medicine
    Journal of the American College of Cardiology
  • 1985

Seismocardiography fur detection of coronary artery occlusion during coronary angioplasty : a preliminary report ( abstract )

  • J Am Coil Cardiol
  • 1989