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A Concise History of the ECG: Difference between revisions
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Since it is clear she sustained a head injury the electricity probably stimulated the child out of deep coma rather than providing cardiac defibrillation (see also 1788, Charles Kite). Annual Report 1774: Humane Society, London. pp 31-32 | Since it is clear she sustained a head injury the electricity probably stimulated the child out of deep coma rather than providing cardiac defibrillation (see also 1788, Charles Kite). Annual Report 1774: Humane Society, London. pp 31-32 | ||
'''1775''' Abildgaard shows that hens can be made lifeless with electrical impulses and he could restore a pulse with electrical shocks across the chest. "With a shock to the head, the animal was rendered lifeless, and arose with a second shock to the chest; however, after the experiment was repeated rather often, the hen was completely stunned, walked with some difficulty, and did not eat for a day and night; then later it was very well and even laid an egg." Abildgaard | '''1775''' Abildgaard shows that hens can be made lifeless with electrical impulses and he could restore a pulse with electrical shocks across the chest. "With a shock to the head, the animal was rendered lifeless, and arose with a second shock to the chest; however, after the experiment was repeated rather often, the hen was completely stunned, walked with some difficulty, and did not eat for a day and night; then later it was very well and even laid an egg." <cite>Abildgaard</cite> | ||
[[Image:Luigi_Galvani_oil-painting.jpg|thumb|150px|left|Italian Anatomist '''Luigi Galvani''']]Italian Anatomist '''Luigi Galvani''' notes that a dissected frog's leg twitches when touched with a metal scalpel. He had been studying the effects of electricity on animal tissues that summer. | '''1786''' [[Image:Luigi_Galvani_oil-painting.jpg|thumb|150px|left|Italian Anatomist '''Luigi Galvani''']]Italian Anatomist '''Luigi Galvani''' notes that a dissected frog's leg twitches when touched with a metal scalpel. He had been studying the effects of electricity on animal tissues that summer. | ||
[[Image:Galvani_experiment.jpg|thumb|150px|Luigi Galvani's frog leg]]On 20th September 1786 he wrote "I had dissected and prepared a frog in the usual way and while I was attending to something else I laid it on a table on which stood an electrical machine at some distance from its conductor and separated from it by a considerable space. Now when one of the persons present touched accidentally and lightly the inner crural nerves of the frog with the point of a scalpel, all the muscles of the legs seemed to contract again and again as if they were affected by powerful cramps." | [[Image:Galvani_experiment.jpg|thumb|150px|Luigi Galvani's frog leg]]On 20th September 1786 he wrote "I had dissected and prepared a frog in the usual way and while I was attending to something else I laid it on a table on which stood an electrical machine at some distance from its conductor and separated from it by a considerable space. Now when one of the persons present touched accidentally and lightly the inner crural nerves of the frog with the point of a scalpel, all the muscles of the legs seemed to contract again and again as if they were affected by powerful cramps." | ||
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'''1884''' John Burden Sanderson and Frederick Page publish some of their recordings. Burdon Sanderson J, Page FJM. On the electrical phenomena of the excitatory process in the heart of the tortoise, as investigated photographically. J Physiol (London) 1884;4:327-338 | '''1884''' John Burden Sanderson and Frederick Page publish some of their recordings. Burdon Sanderson J, Page FJM. On the electrical phenomena of the excitatory process in the heart of the tortoise, as investigated photographically. J Physiol (London) 1884;4:327-338 | ||
'''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. | '''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. | ||
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#Gussak pmid=11173780 | #Gussak pmid=11173780 | ||
#Clemmensen pmid=16226101 | #Clemmensen pmid=16226101 | ||
#Abildgaard Abildgaard, Peter Christian. ''Tentamina electrica in animalibus.'' Inst Soc Med Havn. 1775; 2:157-61. | |||
#Ader Ader C. ''Sur un nouvel appareil enregistreur pour cables sous-marins.'' C R Acad Sci (Paris) 1897;124:1440-1442 | #Ader Ader C. ''Sur un nouvel appareil enregistreur pour cables sous-marins.'' C R Acad Sci (Paris) 1897;124:1440-1442 | ||
#Prevost Prevost JL, Batelli F: ''Sur quelques effets des descharges electriques sur le coeur des mammiferes.'' Acad. Sci. Paris, FR.: 1899; 129:1267-1268. | #Prevost Prevost JL, Batelli F: ''Sur quelques effets des descharges electriques sur le coeur des mammiferes.'' Acad. Sci. Paris, FR.: 1899; 129:1267-1268. | ||