This is a cardiogram from a 59 year old woman with a long history of refractory ectopic atrial tachycardia with block.. The patient had been operated on for mitral valve and tricuspid valve prolapse, had an atrial pacemaker (see chest x-ray) and was taking the amiodarone, synthroid, digoxin, and cozaar.	Rate (/min)	79	QT (ms)	372
	pr (ms)	228	QRS axis (degrees)	30
	QRS (ms)	81