ECG #9

ECG #9

[expand title=”Interpretation”]


Atrial = 52 min-1

Ventricular = 52 min-1


Sinus bradycardia

P waves:  

Duration = 80 ms

Amplitude = 0.05 mV

PR interval:

Duration = 160 ms

Morphology = normal

QRS complex:

Duration = 94 ms

Axis = 20°

Q Waves:


R wave progression:


LV Hypertrophy [Sokolow; SV1 + (RV5 or RV6) > 35mm) or RI + SIII > 25mm]?


RV Hypertrophy [R/S ratio V5 or V6 < 1 or R/S ratio V1 > 1 or S1S2S3 pattern]?


ST segments:

Duration = 140 ms

Morphology = elevation I, II, aVL, V4-6; depression V1-2

T waves:

Duration = 200 ms

Morphology = inversion III, V1-3

QT interval:

QT duration = 476 ms

QTc duration = 447 ms

Additional comments:


Interpretation: The ST elevation in I, aVL and V4-6 are indicative of a lateral wall MI. The ST depression in leads V1-2 is a manifestation of a posterior wall extension of the MI. The borderline ST changes in the inferior leads are reciprocation changes. I am not aware of the angiographic findings, but would suspect an occlusion of the left circumflex artery.


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