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A Concise History of the ECG: Difference between revisions
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[[image:Waller.jpg|thumb|150px|left|A.D. Waller with his famous bulldog Jimmy]]'''1887''' British physiologist Augustus D. Waller of St Mary's Medical School, London publishes the first human electrocardiogram. It is recorded with a capilliary electrometer from Thomas Goswell, a technician in the laboratory. >cite>Waller</cite> | [[image:Waller.jpg|thumb|150px|left|A.D. Waller with his famous bulldog Jimmy]]'''1887''' British physiologist Augustus D. Waller of St Mary's Medical School, London publishes the first human electrocardiogram. It is recorded with a capilliary electrometer from Thomas Goswell, a technician in the laboratory. >cite>Waller</cite> | ||
'''1889''' Dutch physiologist Willem Einthoven sees Waller demonstrate his technique at the First International Congress of Physiologists in Bale. Waller often demonstrated by using his dog "Jimmy" who would patiently stand with paws in glass jars of saline. | |||
'''1890''' GJ Burch of Oxford devises an arithmetical correction for the observed (sluggish) fluctuations of the electrometer. This allows the true waveform to be seen but only after tedious calculations. <cite>Burch</cite> | '''1890''' GJ Burch of Oxford devises an arithmetical correction for the observed (sluggish) fluctuations of the electrometer. This allows the true waveform to be seen but only after tedious calculations. <cite>Burch</cite> | ||
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==1895 - 1949== | ==1895 - 1949== | ||
[[Image:einthoven.jpg|150px|left|thumb|Willem Einthoven]] | [[image:Einthoven_portrait.jpg|thumb|150px|left|Willem Einthoven]][[Image:einthoven.jpg|150px|left|thumb|Willem Einthoven]][[image:Einthoven_ECG2.jpg|thumb|150px|right|Einthoven's ECG recording including putting the patients feet in baths filled with saline to improve electrical conduction]] | ||
[[Image:Einthoven_ECG.jpg|thumb|150px|An electrocardiograph as used by Einthoven]] | [[Image:Einthoven_ECG.jpg|thumb|150px|An electrocardiograph as used by Einthoven]] | ||
'''1895''' Einthoven, using an improved electrometer and a correction formula developed independently of Burch, distinguishes five deflections which he names P, Q, R, S and T. <cite>Einthoven2</cite> | '''1895''' Einthoven, using an improved electrometer and a correction formula developed independently of Burch, distinguishes five deflections which he names P, Q, R, S and T. <cite>Einthoven2</cite> | ||