Tweeting Surgery Progress

I read this AP article in yesterday's Sacramento Bee, which I thought was quite an interesting use of one of the tools we are learning about in this class, http://www2.tbo.com/content/2009/sep/01/hospital-tweets-womans-surgery-children/news-breaking/. I can see having this information can help family members track a loved one's surgery progress, especially if the loved ones are not able to be onsite at the hospital. But what if the surgery is not going very well, there are major complications, etc.? I wonder if the hospital built into their process what to do if these situations occur during surgery? Should they stop posting or continue? Also, even if the patient provides consent to share private information, what guidelines does the hospital staff use to limit the details?