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[[File:E000600.jpg|thumb|An example of an ECG with sinus arrhythmia. This was a young patient without any symptoms. This

Left and right ventricular hypertrophy can be distinguished on the ECG: To diagnose left ventricular hypertrhophy on the ECG one of the following criteria should be met:

[[Image:KJcasus5.jpg|700px|thumb|left|ECG MI 16. Click on image for enlargement.]] **Compare with the old ECG (not available, so skip this step)

[[Image:ECG_RBTB_LAtrD.jpg|thumb| A 12 lead ECG with right bundle branch block, left axis (LAFB)(and [[P wave morphology|le ...fic definition of RBBB is given by the ACC/ESC consensus document<cite>ESC-ECG</cite>:

[[File:ECG000032.jpg|thumb|300px|right|The ECG of a patient with CPVT in rest is normal]] [[File:ECG000033.jpg|thumb|300px|right|The ECG of the same patient with CPVT during exercise. Asterisks mark polymorphic v

...= WPW pattern + symptoms). Not all patients with a WPW ''pattern'' on the ECG are symptomatic. The prevalence of the WPW or pre-exitation pattern is rela ...ccessory bundle connects are the first to depolarize. This is shown on the ECG as a delta wave. The QRS-complex is somewhat widened (> 0.10 sec). Also the

| caption1 = A Normal ECG ...d I. They are one of the most common causes of right axis deviation on the ECG!

[[File:E0007921.jpg|thumb|600px|left|This is an ECG from a 67 year old man with a low ejection fraction. The patient is followe

[[File:E0003163.jpg|thumb|600px|left|This is an ECG strip and an audio recording from a patient checking his Medtronic VVI pace

...ker one month before. The pacer was programed to VVI mode and AAI mode and ECG recordings were made. Also a PA and lateral chest x-ray was taken. The ques

...logical examinations (X-ray, echo) were without abnormalities. Part of the ECG is shown in figure 1. Only the extremity leads are shown (standard calibrat ms (rate slightly lower than 100 beats/min). The wide intervals on the ECG result from a blocked atrial impulse every fourth beat. The block is at the

except for a relatively slow heart rate (45 beats/min). Her ECG is presented in figure 1.

[[Image:KJcasus6.jpg|700px|thumb|left|ECG MI 17. Click on image for enlargement.]] **Compare with the old ECG (not available, so skip this step)

...echocardiography, 24-h ambulatory Holter monitoring, and exercise testing. ECG Features of cardiac diseases detectable at pre-participation screening in y ...eased with age and level of exercise. In young amateur athletes they found ECG abnormalities in about 7%, a number that rose to 40% in "adult elite athlet

heart failure. The ECG on admission is shown in

[[Image:Brugada.png|thumb|Typical ECG abnormalities in Brugada syndrome: ST elevation in V1-V3, without ischemia. [[Image:Brugada_ecg_characteristics.svg|thumb| Typical ECG abnormalities in Brugada syndrome]]