Congressman Mark Kirk Suffers Stroke

From the Chicago Tribune today:

A Kirk spokesperson says the 52-year-old senator checked himself into Lake Forest Hospital. He was transferred to Northwestern, where tests showed he'd suffered a stroke.

A statement from Kirk's office says the surgery was successful and that doctors are "very confident" in his recovery based on his age and health.

My guess: if the surgeons are "very confident" in his recovery, more likely than not the stroke was not hemorrhagic, but embolic. If so, clinically asymptomatic atrial fibrillation is probably the most likely etiology for his stroke.

Our thoughts and prayers are with him and his family.

-Wes

Addendum: Non-dominant hemisphere?

Addendum #2: 12:55 CST: Ischemic etiology reported.

Addendum #3: More detail - Spontaneous R carotid dissection?

Background on this.