Identify the possible problems with the heart of each of the

Identify the possible problems with the heart of each of the following ECG strips

Atrial hypertrophy, Mitral valve stenosis: Enlarged P wave (Bifid P wave and enlarged terminal negative portion of P)

SA node damage, AV used as pacemaker: Abnormally long PQ segment

Extra systole, Heart block: Missing or inverted P wave

Premature ventricular contraction: Abnormal T waves

Myocardial infarction: Abnormal ST segment

ventricular hypertrophy: Enlarged R wave

Flattened: hypoxia, elevated: hyperkalemia: Extra, misshapen, inverted QRS without P wave

Scarring of atrial myocardium, alternative pathway to AV node: Enlarged Q wave

Elevated: Myocardial infarction, depressed: myocardial hypoxia: Multiple P waves per cycle