I had somewhere between 16-20 ultrasounds. I had a high risk pregnancy and they were keeping a close eye on the baby. Each ultrasound cost around $700 plus the costs from the doctor and lab for reading the results. Luckily our insurance picked up the cost after we paid $2500 out of pocket. Even with all that expense my daughter was totally worth it and is perfect.
Part of the difficulty in answering this question is that depth and cause of coma may vary, and memory is impaired during coma so people might hear but not be able to recall what they hear. In brief: Hard to know. It is hard to know if people in a coma can hear you.
10 Amazing Stories Of People Who Woke Up From Comas. Unlike many TV and movie depictions of the condition, being in a coma is a very serious condition that can have long-lasting effects. Most comas do not last more than a few weeks, but there are people who are stuck in one for months or years. The longer a person is in a coma, the less likely they are to wake up. While the time spent in the coma may differ, the stories of these people waking up are quite remarkable.