Ventricular Depolarization Loop Form Changing in Patients Having had Myocardial Infarction

2015 ◽  
pp. 197-199
Author(s):  
J. A. Baziyan
Keyword(s):  
Myocardial Infarction ◽  
Loop Form ◽  
Ventricular Depolarization

Electrocardiography

2020 ◽  
pp. 3294-3314
Author(s):  
Andrew R. Houghton ◽  
David Gray
Keyword(s):  
Myocardial Infarction ◽  
Electrical Activity ◽  
19Th Century ◽  
Diagnostic Tool ◽  
Posterior Aspect ◽  
P Waves ◽  
Right Ventricular Myocardial Infarction ◽  
The 19Th Century ◽  
Ventricular Depolarization ◽  
T Waves

The electrocardiograph (ECG) has been recognized as a valuable diagnostic tool since the end of the 19th century. The normal ECG waveform consists of P, QRS, and T waves (and sometimes U waves)—P waves result from atrial depolarization, QRS complexes from ventricular depolarization, and T waves from ventricular repolarization. The standard 12-lead ECG utilizes four limb electrodes and six precordial electrodes to generate 12 leads or ‘views’ of the heart’s electrical activity. There are six limb leads (termed I, II, III, aVR, aVL, and aVF) and six precordial leads (termed V1, V2, V3, V4, V5, and V6). Supplementary ‘views’ can be obtained by using additional leads, such as V7, V8, and V9 to assess the posterior aspect of the heart and right-sided chest leads to look for a right ventricular myocardial infarction.

Relationship between ventricular depolarization and electrocardiogram in myocardial infarction

1968 ◽  
Vol 1 (2) ◽  
pp. 233-240 ◽  
Author(s):  
John P. Boineau ◽  
Sarah D. Blumenschein ◽  
Madison S. Spach ◽  
David C. Sabiston
Keyword(s):  
Myocardial Infarction ◽  
Ventricular Depolarization

Characterization of ventricular depolarization and repolarization changes in a porcine model of myocardial infarction

2012 ◽  
Vol 33 (12) ◽  
pp. 1975-1991 ◽  
Author(s):  
Daniel Romero ◽  
Michael Ringborn ◽  
Marina Demidova ◽  
Sasha Koul ◽  
Pablo Laguna ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Porcine Model ◽  
Ventricular Depolarization

Electrocardiography

2010 ◽  
pp. 2642-2661
Author(s):  
Andrew R. Houghton ◽  
David Gray
Keyword(s):  
Myocardial Infarction ◽  
Electrical Activity ◽  
19Th Century ◽  
Diagnostic Tool ◽  
Posterior Aspect ◽  
P Waves ◽  
Right Ventricular Myocardial Infarction ◽  
The 19Th Century ◽  
Ventricular Depolarization ◽  
T Waves

The ECG has been recognized as a valuable diagnostic tool since the end of the 19th century. The normal ECG waveform consists of P, QRS, and T waves (and sometimes U waves)—P waves result from atrial depolarization, QRS complexes from ventricular depolarization, and T waves from ventricular repolarization. The standard 12-lead ECG utilizes 4 limb electrodes and 6 precordial electrodes to generate 12 leads or ‘views’ of the heart’s electrical activity. There are six limb leads (termed I, II, III, aVR, aVL, and aVF) and six precordial leads (termed V1, V2, V3, V4, V5, and V6). Supplementary ‘views’ can be obtained by using additional leads, such as V7, V8, and V9 to assess the posterior aspect of the heart and right-sided chest leads to look for a right ventricular myocardial infarction....

An electron microscopic study of the intra-myocardial lesions in cases of acute myocardial infarction

1978 ◽  
Vol 36 (2) ◽  
pp. 484-485
Author(s):  
Masahiro Ono ◽  
Kaoru Aihara ◽  
Gompachi Yajima
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Coronary Vessels ◽  
Vascular Wall ◽  
Vascular Changes ◽  
Electron Microscopic ◽  
Main Trunk ◽  
Mechanical Destruction ◽  
Transmission Electron ◽  
Myocardial Lesions

The pathogenesis of the arteriosclerosis in the acute myocardial infarction is the matter of the extensive survey with the transmission electron microscopy in experimental and clinical materials. In the previous communication,the authors have clarified that the two types of the coronary vascular changes could exist. The first category is the case in which we had failed to observe no occlusive changes of the coronary vessels which eventually form the myocardial infarction. The next category is the case in which occlusive -thrombotic changes are observed in which the myocardial infarction will be taken placed as the final event. The authors incline to designate the former category as the non-occlusive-non thrombotic lesions. The most important findings in both cases are the “mechanical destruction of the vascular wall and imbibition of the serous component” which are most frequently observed at the proximal portion of the coronary main trunk.

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