So, did you hear that he officially has no pulse now?
That doesn't seem to surprise many people, does it?
The official explanation is that a device -- a pump of some type -- was installed into his heart (?!?) after he'd experienced worsening conditions of congestive heart failure (CHF). The truth is, he hasn't ~really~ had a pulse in decades. This is just the best new way to disguise that.
(Make the jump for more heartless cruelty at Dick's expense, but on ePluribus Media's nickle...er, servers.)