, Apparatus
• Electrocardiograph
• Patient cable with leads
• Subject
• Electrodes
• Cardiac jelly
• Examination couch
, Electrocardiograph: ECG Machine
Used to make permanent record
of small potential variations
which occur in different parts of
the body due to electrical activity
of the heart
, Electrocardiograph- ECG Machine
• Cathode ray oscilloscope:
voltage amplifier recorder system
• For calibration there is Speed selector,
Gain selector, Cables, Lead selector
and Electrodes
• An arrangement to run the recording
paper at a desired speed