Bump in the Road

The doctors halted Andrew's chemo yesterday after discovering a slight heart arrhythmia (irregular heartbeat).  They don't seem overly concerned, and listed about 50 different things that could be causing it -- from side effects of the chemo, to lack of sleep.  They've given him an EKG, echocardiogram, and CT scan of the heart to rule out blood clots.  We're waiting for the results now, and the attending doctor said if they scan shows no sign of a clot, they will resume the chemo tomorrow morning.