1a while exercising toms systolic bp went up by 9 mmhg and...

1a.) While exercising, Tom's systolic BP went up by 9 mmHg and his diastolic BP went down by 9 mmHg. Thus his MAP must have __________________________________. a.) Increased b.) Decreased c.) Stayed the same 1b.) Calvin had a MAP of 80 mmHg and a diastolic BP of 70 mmHg. Calculate his stroke volume. Give your answer in mL/beat.

Transcript

00:01 Okay, you want to answer this question, we have to find the main arterial pressure.

00:03 It says while exercising tom's systolic blood pressure, it was a stolic blood pressure, went up by 9 milligrams.

00:13 Milligrams, i'm sorry, millimeters of mercury, and his estolic blood pressure went down by 9 millimeters of mercury.

00:24 Thus, his map must have, remember that the formula for the main arterial pressure, the formula for a main arterial pressure is a diastolic pressure plus one -third of the systolic blood pressure minus the diastolic blood pressure.

00:44 This is the formula.

00:48 So it says that group has increased the systolic blood pressure plus like 9 millimeters of mercury and you can decrease the diastolic blood pressure in 9 millimeters of mercury.

01:01 So let's suppose this is the same as x.

01:05 And this is y.

01:07 Okay, so you have that this is going to be y and x minus y.

01:16 So this is what your initial main arterial pressure is going to be.

01:21 And after this, then you're going to have that your map is going to be y minus 9 plus 1 third of x plus 9 minus 9 minus 9 minus 1 .5.

01:39 Okay, so you just can solve this and you're going to get that the map is going to be y minus 9 plus 1 third of x minus y plus 18.

01:53 Okay, so this is what you have here.

01:55 Remember that this is the map 1 and this is that.

02:00 So you can solve for, well let's multiply this 3 by these values here.

02:09 Then you're going to get 3 in may be 2 is equal to 3.

02:13 3y minus 27 plus x minus y plus 18.

02:20 You can continue solving this and you're going to get 3map2 and this is 2y, this is plus x and this is minus 9.