I used this book to help me study for my NCC certification。 There were some things in it that I found were not completely accurate - like in the back of the book when you are reading strips it will say that the baseline changes at the end of the strip - which you can't call a baseline change because it isn't 10 minutes at the different rate。 I found a few things like that annoying and found I like the AWHONN book better than this one。 If you're studying for the NCC I'd recommend AWHONN over this I used this book to help me study for my NCC certification。 There were some things in it that I found were not completely accurate - like in the back of the book when you are reading strips it will say that the baseline changes at the end of the strip - which you can't call a baseline change because it isn't 10 minutes at the different rate。 I found a few things like that annoying and found I like the AWHONN book better than this one。 If you're studying for the NCC I'd recommend AWHONN over this book。 。。。more