We expected he'd be premature, but we didn't expect it would have to be by C-section. Towards the end of the pregnancy, ultrasound showed calcifications in the placenta. According to the ultrasound specialist, these calcifications were signs of an intrauterine infection, which could have resulted from a week of a flu-like illness which Jana experienced in August. There was a low level of amniotic fluid, and the baby had been behind with weight progression for a while. Since the amniotic fluid is composed to a large extent of the baby's own urine, the gynecologist interpreted its low level as a sign that the baby wasn't getting the nutrition it needed. He recommended that Aaron would be better off outside, and that a C-section would be preferable to induced labor, because dilation hadn't yet taken place.
(Edit: According to another doctor we heard from, calcifications are as expected in late-stage pregnancy as wrinkles in an 80-year old woman. She argues that a lower than average weight is still normal, and a low level of amniotic fluid has no relationship to the nutrients the baby is getting. The CTG results were perfectly normal, so she thinks the C-section was unnecessary.)
Jana received epidural anesthesia, which was administered painlessly, and was awake throughout the procedure. I held the baby for about an hour after he was born, waiting for the mommy to come out of surgery, experiencing a variety of emotions, but mostly awe.
Jana and Aaron are now in their room at the hospital, where I'm returning shortly with some goodies.