The ECG graph paper is a specially designed paper, which records the electrical activity of the heart. To learn more about it click on the link below:

http://www.doctorsdesktop.info/ecg/ecggraphpaper.html

Basics: Waveform and its interpretation

The electrical activity of the heart is recorded on the ECG paper as a set of waves. To learn about the waveform that is created click on the link below:

http://www.doctorsdesktop.info/ecg/waveform.html

Basics: Leads and their interpretation

The leads are placed on the body to examine the electrical activity of the heart from various angles. To learn more about leads click on the link below:

http://www.doctorsdesktop.info/ecg/leads.html

Lesson 2:

Rate: Calculation of Rate

For calculation of the heart rate you require to remember a few numbers in sequence. Follow the link below to find out more about the sequence of these numbers:

http://www.doctorsdesktop.info/ecg/rate.html

Rate: Calculations in Bradycardia

A different method is used to calculate heart rate in bradycardia. To find more about it click below:

http://www.doctorsdesktop.info/ecg/slowrate.html

Rate: Mathematical method and an approach to calculation.

Click on the link below to learn about calculation of rate by mathematical method and also a summary for calculation of rate.

http://www.doctorsdesktop.info/ecg/mathematical.html

Rate: About sinus tachycardia & sinus bradycardia

Two abnormalities in heart rate, without change in rhythm are discussed in this topic:

http://www.doctorsdesktop.info/ecg/sinusrates.html

Lesson 3:

Rhythm: Ectopic foci and Escape beats

Their are inherent ectopic foci present throughout the heart, which sometimes initiate an impulse even in a normal heart. To learn about them click on the link below:

http://www.doctorsdesktop.info/ecg/ectopics.html

Rhythm: Atrial Tachyrhythmias

When an ectopic beat begins firing with rapidity, it results in tachyrhthmias. To learn about them click below.

http://www.doctorsdesktop.info/ecg/atrialtachyrhythmias.html

Rhythm: Ventricular tachyrhythmias

An ectopic focus in the ventricles can result in ventricular tachyrhythimias. To learn about it click below.

http://www.doctorsdesktop.info/ecg/ventriculartachyrhythmias.html

Rhythm: Heart Blocks

When the electrical impulse of the heart fails to pass though its normal conductive pathway, a block is said to have occurred. To learn more about it click below:

http://www.doctorsdesktop.info/ecg/heartblocks.html

Rhythm: More on Heart Blocks

This topic continues to look at heart blocks.

http://www.doctorsdesktop.info/ecg/heartblocks2.html

Lesson 4:

Axis: Normal Axis

The normal axis is located between -30 and +90 degrees. To learn about how to find out the normal axis click on the link below.

http://www.doctorsdesktop.info/ecg/normalaxis.html

Axis: Left Axis diviation

The left axis deviation can be caused by left anterior hemiblock, inferior MI, ventricular pacing, VT, WPW syndrome.

http://www.doctorsdesktop.info/ecg/lad.html

Axis: Right Axis Deviation

In right axis deviation the axis shifts beyond +90 degrees. Click on the link below to find more

http://www.doctorsdesktop.info/ecg/rad.html

Axis: Summary

A summary is presented below:

http://www.doctorsdesktop.info/ecg/summary.html

Lesson 5:

Hypertrophy: Atrial Hypertrophy

The right and left atrial hypertrophy can produce specific changes in the electrocardiogram. Learn about it below.

http://www.doctorsdesktop.info/ecg/atrialhyper.html

Hypertrophy: Right Ventricular Hypertrophy

The distinguishing features of right ventricular hypertrophy are given in this topic

http://www.doctorsdesktop.info/ecg/rvhyper.html

Hypertrophy: Left Ventricular Hypertrophy

This topic looks at the changes that occur in left ventricular hypertrophy.

http://www.doctorsdesktop.info/ecg/lvhyper.html

Lesson 6:

Infarction: ECG Changes

The different grades of ischaemia produce varying changes. To learn about them click below:

http://www.doctorsdesktop.info/ecg/ecgchange.html

Infarction: Evolution with time

This topic traces changes as they evolve. Click below to find about these changes:

http://www.doctorsdesktop.info/ecg/timechanges.html

Infarction: Lead Changes

A chart summarizes the changes that occur in different leads, when different portions of the heart are affected by ischaemia.

http://www.doctorsdesktop.info/ecg/leadchanges.html

Misc: Miscellaneous changes

Some miscellaneous changes are discussed in this topic.

http://www.doctorsdesktop.info/ecg/misc.html

This concludes your course. A sample report and some practice electorcadiograms are given on this page.

http://www.doctorsdesktop.info/ecg/samples/sample.html

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