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Analysis of heart movements in the cardiac cycle by means of electronic instruments, especially by tracings.



the recording of the heart’s contractions; in the broader sense, all methods of registering the heart’s contractile functions.

The first cardiogram (more precisely, a mechanocardiogram) was taken by the French physiologist E. Marey in 1863 by recording the cardiac impulse at the fifth intercostal space. An impulse results when the heart contracts from an ellipsoid, becoming rounder and thicker, its apex rising and pressing against the chest wall. The irregularity of individual waves on the cardiogram and the difficulty of interpretation led to the replacement of the method by more refined ones: ultrasound impulse cardiography, ballistocardiography, dynamocardiography, kinetocardi-ography, seismokymography, roentgenokymography, electro-kymography, and phonocardiography.


References in periodicals archive ?
The trial, conducted at nine sites from March to October 2006, measured the diagnostic accuracy provided by adding acoustic cardiography to an emergency medicine physician's tools.
Abnormal impedance cardiography predicts symptoms severity in chronic fatigue syndrome.
In March, CardioDynamics entered into an alliance with Heart-Lung Associates of America, Hawthorne, NJ) in which CardioDynamics would provide its BioZ cardiography technology to dialysis centers that utilize the cardiology, diagnostic and disease management services of HLAA.
Abnormal impedance cardiography predicts symptom severity in chronic fatigue syndrome.
CardioDynamics (Nasdaq:CDIC), the ICG Company, is the innovator and global leader of breakthrough medical technology called Impedance Cardiography (ICG).
com) is the innovator and world leader in bedside and point-of-care ultrasound and an industry leader in ultra high-frequency micro-ultrasound technology and impedance cardiography equipment.
Braky, MRI, PCR, Colour Doppler machines bone mineral denseto, cardiac stress and electro cardiography system, CT scanner, digital memo graphy T metre and other equipments would also be purchased, Sial said.
The company's proprietary Impedance Cardiography (ICG) initially was utilized by NASA to monitor the cardiac output of the astronauts in space flight and continues to be chosen by NASA for space research programs because of its ability to accurately and noninvasively produce hemodynamic measurements.
Masood said that modern equipment of X-ray, ultrasound, MRI, Mammography, Echo Cardiography and ECG etc have been made available.
Nasdaq:SONO), the world leader and specialist in bedside and point-of-care ultrasound, today introduced the new BioZ[R] Cardio Profile system with impedance cardiography (ICG) technology for non-invasively monitoring a patient's hemodynamic profile in the hospital.
Tenders are invited for Portable Echo Cardiography Machines As Per Annexure Ii