P wave: the sequential activation (depolarization) of the right and left atria

    QRS complex: right and left ventricular depolarization (normally the ventricles are activated simultaneously)

    ST-T wave: ventricular repolarization

    U wave: origin for this wave is not clear - but probably represents "afterdepolarizations" in the ventricles

    PR interval: time interval from onset of atrial depolarization (P wave) to onset of ventricular depolarization (QRS complex)

    QRS duration: duration of ventricular muscle depolarization

    QT interval: duration of ventricular depolarization and repolarization

    RR interval: duration of ventricular cardiac cycle (an indicator of ventricular rate)

    PP interval: duration of atrial cycle (an indicator or atrial rate)

V1: right 4th intercostal spaceV2: left 4th intercostal spaceV3: halfway between V2 and V4V4: left 5th intercostal space, mid-clavicular lineV5: horizontal to V4, anterior axillary lineV6: horizontal to V5, mid-axillary line

INFARK MIOKAR AKUT

• Anteroseptal : V1 – V4• Anterior ekstensip : V1-V6, I dan AVl• Anterolateral : V4-V6, I dan AVL• Anterior : V3-V5• Inferior : II,III dan AVf• Lateral tinggi : I dan AVl• Ventrikel kanan : V4R – V6R

ESTES Criteria for LVH ("diagnostic", >5 points; "probable", 4 points)

+ECG Criteria Points

Voltage Criteria (any of): a.R or S in limb leads >20 mm b.S in V1 or V2 > 30 mm c.R in V5 or V6 >30 mm

3 points

ST-T Abnormalities:Without digitalisWith digitalis

3 points1 point

Left Atrial Enlargement in V1 3 points

Left axis deviation 2 points

QRS duration 0.09 sec 1 point

Delayed intrinsicoid deflection in V5 or V6 (>0.05 sec) 1 point