ECGs in Athletes: Difference between revisions

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|+Criteria for a positive 12-lead ECG
|+Criteria for a positive 12-lead ECG
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!P wave|
!P wave
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*left atrial enlargement: negative portion of the P wave in lead V1 � 0.1 mV in depth and �0.04 s in duration;
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*right atrial enlargement: peaked P wave in leads II and III or V1 � 0.25 mV in amplitude.
<ul>
<li>left atrial enlargement: negative portion of the P wave in lead V1 � 0.1 mV in depth and �0.04 s in duration</li>
<li>right atrial enlargement: peaked P wave in leads II and III or V1 � 0.25 mV in amplitude</li>
</ul>
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!QRS complex
!QRS complex
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|frontal plane axis deviation: right �þ1208 or left –308 to –908;
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|increased voltage: amplitude of R or S wave in in a standard lead �2 mV, S wave
<ul>
|in lead V1 or V2 � 3 mV, or R wave in lead V5 or V6 � 3 mV;
<li>frontal plane axis deviation: right ≥ +120° or left –30° to –90°;</ul>
|abnormal Q waves �0.04 s in duration or �25% of the height of the ensuing R wave or QS pattern in
<li>increased voltage: amplitude of R or S wave in in a standard lead ≥2 mV, S wave in lead V1 or V2 ≥ 3 mV, or R wave in lead V5 or V6 ≥ 3 mV;</ul>
two or more leads;
<li>abnormal Q waves ≥ 0.04 s in duration or ≥ 25% of the height of the ensuing R wave or QS pattern in
|right or left bundle branch block with QRS duration �0.12 s;
two or more leads;</ul>
|R or R0 wave in lead V1 � 0.5 mV in amplitude and R/S ratio �1.
<li>right or left bundle branch block with QRS duration ≥ 0.12 s;</ul>
<li>R or R' wave in lead V1 ≥ 0.5 mV in amplitude and R/S ratio ≥ 1.</ul>
</ul>
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!ST-segment, T-waves, and QT interval
!ST-segment, T-waves, and QT interval
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|ST-segment depression or T-wave flattening or inversion in two or more leads;
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|prolongation of heart rate corrected QT interval .0.44 s in males and . 0.46 s in females.
<ul>
<li>ST-segment depression or T-wave flattening or inversion in two or more leads;</ul>
<li>prolongation of heart rate corrected QT interval (QTc) > 0.44 s in males and > 0.46 s in females.</ul>
</ul>
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!Rhythm and conduction abnormalities
!Rhythm and conduction abnormalities
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|premature ventricular beats or more severe ventricular arrhythmias;
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|supraventricular tachycardias, atrial flutter, or atrial fibrillation;
<ul>
|short PR interval (,0.12 s) with or without ‘delta’ wave;
<li>premature ventricular beats or more severe ventricular arrhythmias;</ul>
|sinus bradycardia with resting heart rate �40 beats/mina;
<li>supraventricular tachycardias, atrial flutter, or atrial fibrillation;</ul>
|first (PR 0.21 s), second or third degree atrioventricular block.
<li>short PR interval (< 0.12 s) with or without ‘delta’ wave;</ul>
<li>sinus bradycardia with resting heart rate ≤ 40 beats/mina;<sup>a</sup></ul>
<li>first (PR ≥ 0.21 s<sup>b</sup>), second or third degree atrioventricular block.</ul>
</ul>
|-
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|Increasing less than 100 beats/min during limited exercise test.
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|Not shortening with hyperventilation or limited exercise test.
<sup>a/sup>Increasing less than 100 beats/min during limited exercise test.
<sup>b</sup>Not shortening with hyperventilation or limited exercise test.
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Revision as of 21:06, 14 October 2007

Criteria for a positive 12-lead ECG
P wave
  • left atrial enlargement: negative portion of the P wave in lead V1 � 0.1 mV in depth and �0.04 s in duration
  • right atrial enlargement: peaked P wave in leads II and III or V1 � 0.25 mV in amplitude
QRS complex
  • frontal plane axis deviation: right ≥ +120° or left –30° to –90°;
  • increased voltage: amplitude of R or S wave in in a standard lead ≥2 mV, S wave in lead V1 or V2 ≥ 3 mV, or R wave in lead V5 or V6 ≥ 3 mV;
  • abnormal Q waves ≥ 0.04 s in duration or ≥ 25% of the height of the ensuing R wave or QS pattern in two or more leads;
  • right or left bundle branch block with QRS duration ≥ 0.12 s;
  • R or R' wave in lead V1 ≥ 0.5 mV in amplitude and R/S ratio ≥ 1.
    • ST-segment, T-waves, and QT interval
    • ST-segment depression or T-wave flattening or inversion in two or more leads;
  • prolongation of heart rate corrected QT interval (QTc) > 0.44 s in males and > 0.46 s in females.
    • Rhythm and conduction abnormalities
    • premature ventricular beats or more severe ventricular arrhythmias;
  • supraventricular tachycardias, atrial flutter, or atrial fibrillation;
  • short PR interval (< 0.12 s) with or without ‘delta’ wave;
  • sinus bradycardia with resting heart rate ≤ 40 beats/mina;a
  • first (PR ≥ 0.21 sb), second or third degree atrioventricular block.

    • a/sup>Increasing less than 100 beats/min during limited exercise test. bNot shortening with hyperventilation or limited exercise test.


    References

    <biblio>

    1. corrado pmid=15689345

    </bilbio>

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