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  2. ST depression - Wikipedia

    en.wikipedia.org/wiki/ST_depression

    Also, it can be a normal variant or artifacts, such as: Pseudo-ST-depression, which is a wandering baseline due to poor skin contact of the electrode [3] Physiologic J-junctional depression with sinus tachycardia [3] Hyperventilation [3] Horizontal ST depression in V4, V5, V6 leads during a cardiac stress ECG. Other, non-ischemic, causes include:

  3. ST segment - Wikipedia

    en.wikipedia.org/wiki/ST_segment

    Schematic representation of normal ECG. In electrocardiography, the ST segment connects the QRS complex and the T wave and has a duration of 0.005 to 0.150 sec (5 to 150 ms). It starts at the J point (junction between the QRS complex and ST segment) and ends at the beginning of the T wave.

  4. Right axis deviation - Wikipedia

    en.wikipedia.org/wiki/Right_axis_deviation

    It is measured using an electrocardiogram (ECG). Normally, this begins at the sinoatrial node (SA node); from here the wave of depolarisation travels down to the apex of the heart. The hexaxial reference system can be used to visualise the directions in which the depolarisation wave may travel. On a hexaxial diagram (see figure 1):

  5. Cardiac stress test - Wikipedia

    en.wikipedia.org/wiki/Cardiac_stress_test

    Moderate to severe anginal pain (above 3 on standard 4-point scale [34]) Signs of poor perfusion, [33] e.g. cyanosis or pallor [34] Request of the test subject; Technical difficulties (e.g. difficulties in measuring blood pressure or EGC [34]) ST Segment elevation of more than 1 mm in aVR, V 1 or non-Q wave leads; Sustained ventricular tachycardia

  6. Sgarbossa's criteria - Wikipedia

    en.wikipedia.org/wiki/Sgarbossa's_criteria

    proportionally excessively discordant ST elevation in V1-V4, as defined by an ST/S ratio of equal to or more than 0.20 and at least 2 mm of STE. (this replaces Sgarbossa criterion 3 which uses an absolute of 5mm) Wackers et al. correlated ECG changes in LBBB with localization of the infarct by thallium scintigraphy. [7]

  7. Diagnosis of myocardial infarction - Wikipedia

    en.wikipedia.org/wiki/Diagnosis_of_myocardial...

    those with ST segment depression or T wave inversion (suspicious for ischemia), and; those with a so-called non-diagnostic or normal ECG. A normal ECG does not rule out acute myocardial infarction. Mistakes in interpretation are relatively common, and the failure to identify high risk features has a negative effect on the quality of patient ...

  8. De Winter syndrome - Wikipedia

    en.wikipedia.org/wiki/De_Winter_syndrome

    Diagnosis is based on an ECG showing ST-segment depression at the J-point of 1 to 3 mm in leads V1 to V6, with tall and symmetrical T waves. [1] The ST-segment is upsloping and there is also often ST-segment elevation of 0.5 to 2 mm in lead aVR. [1] [2] The QRS complex is either normal or slightly wide. [1]

  9. Electrocardiography in myocardial infarction - Wikipedia

    en.wikipedia.org/wiki/Electrocardiography_in...

    The 2018 European Society of Cardiology/American College of Cardiology Foundation/American Heart Association/World Health Federation Universal Definition of Myocardial Infarction for the ECG diagnosis of the ST segment elevation type of acute myocardial infarction require new ST elevation at J point of at least 1mm (0.1 mV) in two contiguous leads with the cut-points: ≥1 mm in all leads ...

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