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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First degree vs Second degree vs Third degree AV Block

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Name this Blocks A. First degree AVB is present in this rhythm strip. Every P wave is conducted, but with prolonged PR interval (~320ms). B. Second degree AVB type 1 (Mobitz I) is present in this rhythm strip. We can see progressive prolongation of the PR interval culminating in a non-conducted P wave (3d and 7d P wave are non-conducted). C. Second degree AVB type 2:1 is present in this rhythm strip. We can see that there are 2P waves for every QRS complex. We don’t have two P wave conducted in a row so can’t conclude if PR interval is prolonged (Mobitz I) or constant (Mobitz II). D. High degree AVB (3:1) is present in this rhythm strip. We can see that just every 3d P wave is conducted (with constant PR interval) and two out of every three P wave are blocked. E. High degree AVB (4:1) is present in this rhythm strip. We can see that just every 4d P wave is conducted (with constant PR interval) and three out of every four wave are blocked. F. Third degree AVB is present i
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RBBB vs LBBB vs IVCD

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This ECG shows: a) RBBB b) LBBB c) IVCD This ECG present typical changes for RBBB. The RBBB criteria fulfilled in this case are: -           Supraventricular rhythm. -           Wide QRS complex (>120 ms) with rsR’ morphology. -           Slurred S wave in V6. -           T wave discordance in precordial leads.   The most common cause of RBBB are: ASD, COPD, right ventricular hypertrophy, pulmonary thromboemboli, ischaemic heart disease, hypertension, cardiomyopathy.
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