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Pediatric Cardiologist

Real-Life Activities

Real-Life Math -- Solution

Use the chart to find the average of her tests.

Resting

Average = (51 + 49 + 47 + 52) / 4
Average = 199 / 4
Average = 49.75

Standard = 46
Deviation percentage = (49.75 - 46) / 46 x 100
Deviation percentage = 3.75 / 46 x 100
Deviation percentage = 8.2

Sleeping

Average = (45 + 44 + 48 + 49) / 4
Average = 186 / 4
Average = 46.5

Standard = 41
Deviation percentage = (46.5 - 41) / 41 x 100
Deviation percentage = 5.5 / 41 x 100
Deviation percentage = 13

Exercise

Average = (65 + 71 + 72 + 70) / 4
Average = 278 / 4
Average = 69.5

Standard: 62
Deviation percentage = (69.5 - 62) / 62 x 100
Deviation percentage = 7.5 / 62 x 100
Deviation percentage = 12

Because the deviation is more than 10 per cent in 2 cases, you should order additional tests.

"The most math you're going to do here is sort of the basic stuff you get in elementary school," says pediatric cardiologist Dr. Cheryl Cammock. "A little bit of algebraic concepts.

"For me, though, because I deal mostly in cardiac imaging, I use a little bit of geometry in a way," says Dr. Cammock. "Not the concepts per se, but you sort of have to pull some of that into it by the way you visualize things. Some of the new technologies in imaging involve a lot of spatial changes and how to manipulate images, so in a way you're pulling in some of that (geometry)."

Dr. Cammock says physics also comes into play.

"You're not doing physics per se, but there are some basic physics concepts involved in pediatric cardiology -- actually quite a bit of it, involved in both the cardiac invasive parts of it and the non-invasive imaging," says Dr. Cammock. "So you draw into it the applied mathematics more than anything, and then on a daily basis you will definitely use all of that basic math that you get in elementary (school)."

Another example of how pediatric cardiologists use math is with drug amounts.

"We're [often] giving drugs and all our drugs are based on weight per kilogram, so we're always converting," says Dr. Cammock. "You do a lot of conversions between American standard weights -- pounds -- to metric, because everything we do is in metric in medicine."


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