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21 Cards in this Set

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Normal heart rate

60 to 100 beats per minute (BPM)

Bradycardia

Heart rate below 60 BPM

Tachycardia

Heart rate greater than 100 BPM

Normal axis

Upright QRS in leads 1 and aVF

Left axis deviation

Upright QRS in lead 1 and


down right QRS in lead aVF

Right Axis deviation

Downward QRS in lead 1 and an


upright QRS in lead aVF

Normal PR interval in ECG

120 - 200 milliseconds

Normal QRS interval in ECG

Less than 120 milliseconds

AV block

PR interval greater than 200 milliseconds or


p with no QRS afterward

Left bundle branch block LBBB

*QRS greater than 120 milliseconds


*no R wave in V1


*wide & tall R waves in V1, V5 and V6

look for three things

Right bundle branch block - RBBB

Rbbb


QRS greater than 120 milliseconds


rabbit ears in V1


Wide R wave in V1


Wide S Wave in leads V1, V5 and V6

Long QT syndrome

QT greater than 440 milliseconds

An underdiagnosed congenital disorder predisposing to ventricular tachyarrhythmia

Ischemia on ECG

°New inverted T waves


°poor R wave progression in precordial leads


°ST segment changes~>elevation or depression

Transmural infarct on ECG

Significant Q waves greater than 440 milliseconds or more than one-third of the QRS amplitude


ST elevations with T wave inversions

Chamber Enlargement on ECG



Right Atrial Abnormality

P pulmonale


the P wave amplitude in lead 2 is greater than 2.5 mm

Peaked p waves

Pulmonale

In right heart

M shaped p waves

Mitral

In left heart

Chamber Enlargement on ECG



Left Atrial Abnormality

P mitral


P wave width in lead 2 is >120msec


Notched p waves in lead 2

Left ventricular hypertrophy


LVH s35rv56

°Amplitude of S in lead V1 >35mm


°Wave R in V5 or V6 is greater than 35 mm

Left ventricular hypertrophy LVH on ECG



gender-specific

Look at:


Wave R in aVL,


Wave S in V3


MEN>28 mm (MEN ATE MORE)


WOMEN > 20 mm

Chamber enlargement on ECG


right ventricular hypertrophy RVHrv1, 7

RVH


right Axis deviation ( Lead 1 QRS downright and upright QRS on aVF)



R wave in V1 > 7 mm

R V1 is 7+