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19 Oct 2018

No P wave is detected on the electrocardiogram (ECG), and the heart rate is 46 beats per minute. What do you suspect?

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Related questions

If the left ventricle moves 50 mL of blood with each heart beatagainst a mean afterload pressure of 110 mmHg with an averagediastolic filling pressure of 10 mmHg, what is the stroke work ofthe LV given a heart rate of 55 beats per minute? (Hint: 1 mmHg =0.0113 N/cm^2)

If the left ventricle moves 50 mL of blood with each heart beatagainst a mean afterload pressure of 110 mmHg with an averagediastolic filling pressure of 10 mmHg, what is the stroke work ofthe LV given a heart rate of 55 beats per minute? (Hint: 1 mmHg =0.0133 N/cm^2)

1.The exercise heart rate (HER) should be

a. taken before, during and after class.

b. counted within 15 seconds after you stop exercising.

c. taken at the brachial site.

d. taken several times during the aerobic exercise portion of class.

e. b and d

2.Which of the following statements is FALSE?

a. A cool-down should be continued until participants’ heart rates are 120 beats per minute or lower.

b. Exercising below the THR (training heart rate zone) as determined by a standard heart rate formula may result in conditioning for low-fit individuals.

c. The recovery (post) heart rate is a useful indicator of fitness.

d. A heart rate of 120 beats per minute is equal to a heart rate of 20 beats per 10 seconds.

e. A low (-60 bpm) resting heart rate is an indication that the heart is not functioning efficiently.\

3.Which of the following statements is FALSE?

a. Steps that move around the floor help eliminate stress to the lower legs.

b. Hopping on one leg should be limited to 4 repetitions.

c. The “burn” occurs during aerobic exercise.

4.Which of the following is LEAST likely to be a benefit of regular participation in cardio exercise?

a. More energy during normal daily tasks

b. Improved oxygen transport and absorption

c. increased speed and faster reaction times

d. A reduced risk of premature death

e. improved neural transmission

d. Interval aerobics alternates intensities equal to the top and bottom of the aerobic target zone.

e. Heat rates in water (aqua) aerobics tend to run 10-15% lower than land aerobics.

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