Cadell's Ear Test

Shortly after Cadell was born, our midwife Trudy Bergmann told us of a hearing test that has recently become available for new born babies. Since young kiddies are prone to ear infections and other nasties, we were naturally keen to find out if Cadell's hearing was up to par from the beginning, so we asked to learn more. It turns out that the test is completely non invasive, doesn't disturb the baby, and is in fact best done while the child is asleep! On top of that, the hospital was offering it to us for free. 'Why not?' we thought, so with Cadell 8 days old, we took ourselves off to Canberra hospital for an hour or so to get the test done.

Wired up
The first step was to use a bit of gel to stick three electrodes on to Cadell's head. Since he decided to have a feed at the time, the whole process was a matter of profound indifference to him.
The test measures brain stem response to quiet audio stimulus (about 35dB) across a range of frequencies. Progress is plotted on the screen of a laptop computer.
Test Progress
Sounds go in
The technician holds a tiny earphone to Cadell's ear to feed the test sounds in.
The bit we were waiting for. He passed with both ears working well, even though he fell asleep during the test.
Passed the test
Weighed again
While at the hospital, we stopped in at the birth centre for a chat with Trudy. Out came the scales for another weigh-in. What do you know? He's up to 3790 grams, a 180 gram increase in 8 days. This boy can eat!

He may not read it for a while, but you can send Cadell an email.
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