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  2. Atrial flutter - Wikipedia

    en.wikipedia.org/wiki/Atrial_flutter

    Type I atrial flutter, counterclockwise rotation with 3:1 and 4:1 AV nodal block. Atrial flutter with a two to one block. Note the P waves hiding in the T waves in leads V1 and V2. Type I atrial flutter, also known as common atrial flutter or typical atrial flutter, has an atrial rate of 240 to 340 beats/minute.

  3. Wikipedia:Osmosis/Atrial flutter - Wikipedia

    en.wikipedia.org/.../Atrial_flutter

    The normal firing rate from the SA node is 60-100 beats per minute. But in atrial flutter the electrical signals are coming from a reentrant circuit which moves much faster, let’s say 350 beats per minute. In this case, there are no normal P-waves. Instead they are called flutter waves, or F waves, and they take on this sawtooth shape.

  4. Lewis lead - Wikipedia

    en.wikipedia.org/wiki/Lewis_lead

    Electrode placement for Lewis lead; RL electrode (green), not shown, remains on leg . A Lewis Lead (also called the S5 lead) is a modified ECG lead used to detect atrial flutter waves when atrial flutter is suspected clinically, based on signs and symptoms, but is not definitely demonstrated on the standard 12 lead ECG.

  5. Jim Harbaugh heart condition: Why Chargers coach left game ...

    www.aol.com/jim-harbaugh-heart-condition-why...

    Jim Harbaugh said he has atrial flutter, a type of arrhythmia that causes the upper chambers of the heart to beat 250 to 350 times per minute. A flare up today is what caused him to leave the game ...

  6. P wave (electrocardiography) - Wikipedia

    en.wikipedia.org/wiki/P_wave_(electrocardiography)

    P-wave changes in left and right atrial hypertrophy. Bifid P waves (known as P mitrale) indicate left-atrial abnormality - e.g. dilatation [6] or hypertrophy. [1] If at least three different shaped P waves can be seen in a given ECG lead tracing, this implies that even if one of them arises from the SA node, at least two others are arising ...

  7. Rhythm interpretation - Wikipedia

    en.wikipedia.org/wiki/Rhythm_interpretation

    A wandering atrial pacemaker can be either normal or irregular in rate, much like a sinus arrhythmia the rate is normally between 60 - 100 bpm when it is normal and less than 60 when it is slow, the distinguishing feature of this rhythm is a p wave that varies in size, shape, and direction, the PR interval can either be normal or irregular ...

  8. Palpitations - Wikipedia

    en.wikipedia.org/wiki/Palpitations

    The next level of diagnostic testing is usually 24-hour (or longer) ECG monitoring, using a recorder called a Holter monitor, which can record the ECG continuously during a 24-hour or 48-hour period. If symptoms occur during monitoring it is a simple matter to examine the ECG recording and see what the cardiac rhythm was at the time.

  9. Atrioventricular node - Wikipedia

    en.wikipedia.org/wiki/Atrioventricular_node

    This is the property of the AV node that prevents rapid conduction to the ventricle in cases of rapid atrial rhythms, such as atrial fibrillation or atrial flutter. The AV node's normal intrinsic firing rate without stimulation (such as that from the SA node) is 40–60 times/minute. [13]