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ECG / Electrophysiology
Rare supraventricular tachycardias include pulmonary vein tachycardia and right atrial appendage tachycardia.
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ECG / Electrophysiology
AV node dependent and AV node independent tachycardias: SVT can be classified into AV node independant and AV node dependant tachycardias.
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ECG / Electrophysiology
Some supraventricular tachycardias can be missed clinically as the AV conduction may not be 1:1 and the heart rate may be in the normal range.
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General Cardiology
Using nitroglycerine, especially for suspected anterior wall infarction is useful in excluding vasospastic angina.
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ECG / Electrophysiology
ECG changes of myocardial ischemia: ST segment depression in subendocardial ischemia, ST segment elevation in transmural or subepicardial ischemia.
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General Cardiology
WHO/AHA criteria for acute myocardial infarction, 1950: cardiac pain > 30 min, ST elevation in 2 or more contiguous leads, rise and fall of biomarkers.
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ECG / Electrophysiology
Electrical axis of the heart: mean ventricular electrical activity is represented by the mean electrical axis of the QRS.
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ECG / Electrophysiology
Variants of normal electrocardiogram: J point elevation and juvenile T inversion are normal variants often seen in ECGs of younger individuals.
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ECG / Electrophysiology
Modifications of ECG recording: Mason-Likar torso leads, EASI 5 lead system and 15 lead ECG are some of the modifications.
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Cardiology X-ray
Dual chamber pacemaker with leads seen on a chest x-ray PA view.
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