4,200
edits
Basics: Difference between revisions
m
→The history of the ECG
| Line 74: | Line 74: | ||
=The history of the ECG= | =The history of the ECG= | ||
[[Image:Einthoven.gif|thumb|[[w:Einthoven|Willem Einthoven (1860-1927), the founder of the current ECG]]]] | [[Image:Einthoven.gif|thumb|[[w:Einthoven|Willem Einthoven (1860-1927), the founder of the current ECG]]]] | ||
[[Image:einthECG1.png|thumb|ECG | [[Image:einthECG1.png|thumb|ECG from Eindhoven's first publication. ''Pfügers Archiv March 1895, page 101-123'']] | ||
[[Image:stringgalvanometer.jpg|thumb|Einthoven's | [[Image:stringgalvanometer.jpg|thumb|Einthoven's string-galvanometer, now in the Science Museum in Londen. The patient had to put his hands in salt baths to which the electrodes were connected. ''Image from the [http://www.ieee.org/portal/cms_docs_iportals/iportals/aboutus/history_center/conferences/che2004/Landman.pdf IEEE history society]''.]] | ||
[[Image:modern_ecg.jpg|thumb| | [[Image:modern_ecg.jpg|thumb|The last generation of ECG equipment. Image courtesy of [http://www.gehealthcare.com/euen/cardiology/ General Electric]]] | ||
The history of the ECG goes back more than one and a half century | |||
In '''1843''' | In '''1843''' Emil Du Bois-Reymond, a german physiologist, was the to describe "action potentials" of muscular contraction. He used a highly sensitive galvanometer, which contained more than 5 km of wire. Du Bios Reymond named the different waves: "o" was the stable equilibrium and he was the first to use the p, q, r and s to describe the different waves. ''Du Bois-Reymond, E. Untersuchungen uber thierische Elektricitat. Reimer, Berlin: 1848.'' | ||
In '''1850''' | In '''1850''' M. Hoffa described how a irregular hoe hij onregelmatige contracties van de ventrikels veroorzaakte door hondenharten een electrische schok te geven. ''Hoffa M, Ludwig C. 1850. Einige neue versuche uber herzbewegung. Zeitschrift Rationelle Medizin, 9: 107-144'' | ||
In '''1887''' publiceerde de Engelse fysioloog Augustus D. Waller uit Londen het eerste menselijke electrocardiogram. Hij gebruikte een capillair-electrometer. ''Waller AD. A demonstration on man of electromotive changes accompanying the heart's beat. J Physiol (London) 1887;8:229-234'' | In '''1887''' publiceerde de Engelse fysioloog Augustus D. Waller uit Londen het eerste menselijke electrocardiogram. Hij gebruikte een capillair-electrometer. ''Waller AD. A demonstration on man of electromotive changes accompanying the heart's beat. J Physiol (London) 1887;8:229-234'' | ||