Arrhythmias: Escape and escape rhythms are classified as atrial, atrioventricular junctional and ventricular depending on the pacing point. They are commonly seen in sinus bradycardia, long periods of sinus arrhythmia, sinus arrest, long intervals after pre-systole, sinus block, and high levels of atrioventricular block. Accelerated atrial escape rhythm is seen in organic heart disease involving the atria. It is also seen in rheumatic heart disease, pulmonary heart disease, coronary artery disease, digitalis toxicity or systemic infection, and some non-organic heart disease. Intersectional escape rhythm is common in rheumatic myocarditis, acute myocardial infarction, cardiac surgery, anesthesia, and digitalis overdose. They are usually transient in nature. Persistent junctional rhythm is a pathologic phenomenon. Accelerated ventricular fugitive rhythm is common in acute myocardial infarction, digitalis overdose, myocarditis, hyperkalemia, and occasionally in patients without organic heart disease.