[[Image:ECG_nortr_intox.png|thumb|left|300px|An example of severe nortriptyline intoxication. The inhibitory effect
of the sodium channel manifests as a broadened QRS complex and a prolonged QT interval.]]
[[Image:ECG_TCA_intox.jpg|thumb|left|300px| Another example of severe nortriptyline intoxication.]]
[[w:Myocarditis|Myocarditis]] is an inflammation of the myocardium and the interstitium. The symptoms are faint chest pain, abnormal heart rate and progressive heart failure. It can be caused by several factors: viruses, bacteria, fungi, parasites,
spirochaetes, auto-immune reactions, borreliosis (Lyme's disease) and HIV/AIDS.
Acute peri/myocarditis causes nonspecific ST segment changes. These can be accompanied by supraventricular and ventricular rhythm disturbances and T-wave abnormalities.
==Hypertrophic Obstructive Cardiomyopathy==
A HOCM is
an hereditary illness.
On the ECG there are signs of [[hypertrophy|left ventricular hypertrophy]] and [[P wave morphology|left atrial enlargement]].
* Prolonged QTc-interval
* ST segment elevation (inferior and left precordial leads)
* Osborne-waves (slow
deflexions at the end of the QRS-complex)
*ST-T segment elevation or depression
*AV delay(1st, 2nd, and 3rd degree AV blok)