This is a narrow-complex QRS rhythm which is quite fast. Looking closely at the last part of the QRS complex in leads V1 and V2, P waves can be seen. This is considered a "short RP tachycardia ...
except for the one beat in lead V1 towards the end of the ECG strip. This beat is one of the premature ventricular contractions and does have a wide R wave measuring about 80 ms and is in a left ...
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