Learn Rhythm

Job #4679

Job Posting Details

Job # 4679 Learn Rhythm

Posted Date
Aug 31, 2007 @ 08:33
Respond By
Sep 3, 2007
Word Count
English (North American)
Age Range

Job Description

For medical educational software program we need an informative voice for approx. 5600 words in 351 lines. Please speak the attached text as a test, for us to evaluate your voice and pronunciation.

Format: WAV, Windows PCM, 44.1kHz, 16Bit, Mono

-------- Audition Script ---------

Supraventricular Tachyarrhythmia

• A supraventricular arrhythmia arises suddenly in the atria or AV node. It can be an irritable focus that repeats or sustains itself by a circular movement called reentry. By definition sinus tachycardia is excluded.

• The atrial impulse is rapid, with a rate of more than 100 per minute. This is the definition that a tachycardia is present. It is important to recognize that the atria rate may have a different rate than the ventricles due to a physiological blocking of impulse conduction through the AV node.

• For example, if the atrial rate is very fast, as in atrial flutter or fibrillation, atrial impulses are blocked in the AV node. This physiological blocking of impulse conduction through the AV node only allows some atrial impulse through and thereby the ventricular rate is slower than the atrial rate. In atrial flutter the atrial impulses, called flutter waves, are regular and are usually blocked in a set number. Commonly every other flutter wave is blocked This is 2:1 conduction. Examples of other levels of conduction that can occur are 4:1 and 3:1.

• The most common form of supraventricular tachycardia is AV nodal reentry caused by dual pathways of conduction in the region of the AV node. The impulse can enter one pathway and then be conducted back up another pathway resulting in a reentry circuit. The atrial rate is more than 180 per minute.

• Because the arrhythmia arises in the atria or AV node the QRS complex is narrow in a supraventricular arrhythmia

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