History Of Electrocardiography

Running head : annals OF cardiogramNameCollegeDateTransmission of cardiac pulse straddle across specialized cardiac tissues [Sinoatrial nodeAtrioventicular node , Bundle of His (including the flock branches ) and Purkinje fibres] is responsible for(p) for initiating and maintaining rhythmic exertion of purport in unionise of symmetrical , successive contractions and relaxations (Shouldice ocean bass , 2002 . Conduction of cardiac likings is vital for square-toed mathematical process of the heart disturbances in this conducting frame can pay mutilate cardiac anomalies in hit of arrhythmias (Shouldice sea bass , 2002 . Two much(prenominal) arrhythmias (atrial fibrillations and ventricular tachycardia ) will be later described in this essay Measurement of bounty and duration of this voltaic humankinddate is possible today with the serve well of a procedure c every last(predicate)ed elecrocardiography Electrocardigraphy yields a graphical representation of cardiac electrical activity in form of an ECG (electrocardiogramEven though Scientists like Waller , DuBois-Reymond , and Einthoven laid the stand ofmodern electrocardigraphy , which is done today , scientists all over the world had been conducting galore(postnominal) another(prenominal) experiments all without 17th and18th centuries in to observe the outlet of electricity on animal tissues (Jenkins Gerred , 2001 . The full termination from 1800 to1903 witnessed the development of variant of bare-ass instruments which could detect the electrical impulses generated by the heart muscles . This widget was cognise as galvanometer at that era and formed the solid reasonableness of modern day ECG machines . Emil Du bois-Reymond , a German physiologist in 1843 invented one of the most clarified galvanometers of those days (Jenkins Gerred , 2001 . The prototypic man electrocardiogram was obtained by a British physiologist A .D waller in 1887 at London , using a capilliary electrometer . He was the front person to use the term `electrocardiogram . However he refuted the clinical significance of these recordings and electrocardiography did not become clinically relevant until 1903 (Shouldice Bass , 2002 . In 1903 , Dutch physiologist , William Einthoven constructed a cogwheel galvanometer (as shown in opine .

1 ) which consisted of a fine silver-plated lechatelierite fit stretched between the poles effective electromagnets (Shouldice Bass 2002 . The working of the galvanometer was reach on the principle that when electric current would be passed by dint of the thin wire , the charismatic field would cause the wire to move . Movements of the draw would fancy a shadow on the moving roll of photographic . Thus the movement of take up would be represented in form of a immortal curve (as shown in figure 3 . This curve showed original waveforms which were characteristic of non-homogeneous regions of the heart through which cardiac impulse passed and simultaneously ca apply their contraction . Einthoven too suggested the terminology , Q , R , S , T , U for the various defections (waves ) obtained on the electrocardiogram (Shouldice Bass 2002 . Even though this get galvanometer weighed about 300 kg and required five operators , it was much more sensitive as compared to the capillary electrometer which had been previously used by Waller (Shouldice Bass , 2002 . Einthoven to a fault described the electrocardiographic features of a number of cardiovascular scandalize In 1924 , he was awarded the Nobel pelf in Medicine for his denudation (Shouldice...If you want to get a full essay, order it on our website: Orderessay

If you want to get a full information about our service, visit our page: How it works.