Hyperkalemia, hyperacute T wave or neither of them



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Sinus tachycardia vs Sinus bradycardia vs Sinus arrhythmia

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A) Sinus tachycardia is sinus rhythm with heart rate over 100/min. This rhythm is regular with normal appearance P wave and normal duration PR intervals. QRS complexes can be narrow or wide. B) Sinus bradycardia is sinus rhythm with heart rate bellow 60/min. This rhythm is regular with normal appearance P wave and normal duration PR intervals. QRS complexes can be narrow or wide. C) Sinus arrhythmia is sinus rhythm with variation of P-P (R-R) intervals at least 120ms. P wave has normal appearance and normal PR intervals. QRS complexes can be narrow or wide.
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What kind of AV Block?

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Patient with chest pain. What is your diagnosis? a)       STEMI infero-posterioris. Mobitz I b)       STEMI infero-lateralis. Mobitz I c)        STEMI inferioris. Mobitz II d)       STEMI inferioris. Total AVB e)       STEMI inferioris. NSTEMI anterioris. Second degree AVB This ECG shows ST elevation in inferior leads that’s mean STEMI inferior is present.   Posterior STEMI is suggested by horizontal ST depressions, upright T Wave and tall R wave in right precordial leads. PR interval is not constant. We can see progressive prolongation of this interval culminating with non conducted P wave, typical for second degree AVB, Mobitz I, that appear in P:QRS group with ratio 3:2 or 4:3. Incomplete LBBB is present too. Final diagnosis: a)  STEMI infero-posterioris. Mobitz I
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