Please assume that the normal respiratory rate for an adult is 12 to 20 breaths per minute (BPM). If you encounter an adult patient who is breathing in 500ml of air in one breath and is breathing at a rate of 13 breaths
per minute, how many ml of air does the patient take in during one minute?
ml.

The correct answer is - 6500 ml.

Explanation:

The amount of air breathed in with each normal breath is known as tidal volume (TV). The average tidal volume is 0.5 liters (500 ml) with each breath. The total volume of air that gets in the lungs in a minute is called minute ventilation (VE). The average minute ventilation is 6 liters per minute as a normal respiratory rate for an adult is 12.

In this case,

breathing in 500ml of air in one breath

breathing in 500ml of air in one breath

then, The minute ventilation is therefore

500 ml/breath X 13breaths / minute

= 6500 ml of air per minute.

i think the answer is c

hope this

    however, coronary heart disease , or chd, is actually a result of coronary artery disease, or cad, said edward a. fisher, m.d., ph.d., m.p.h., an american heart association volunteer who is the leon h. charney professor of cardiovascular medicine and also of the marc and ruti bell vascular biology and disease program at the nyu school of medicine.

  with coronary artery disease, plaque first grows within the walls of the coronary arteries until the blood flow to the heart’s muscle is limited. view an illustration of coronary arteries. this is also called ischemia. it may be chronic, narrowing of the coronary artery over time and limiting of the blood supply to part of the muscle. or it can be acute, resulting from a sudden rupture of a plaque and formation of a thrombus or blood clot.

    the traditional risk factors for coronary artery disease are high ldl cholesterol, low hdl cholesterol, high blood pressure, family history, diabetes, smoking, being post-menopausal for women and being older than 45 for men, according to fisher. obesity may also be a risk factor.

    “coronary artery disease begins in childhood, so that by the teenage years, there is evidence that plaques that will stay with us for life are formed in most people,” said fisher, who is former editor of the american heart association journal, atvb. “preventive measures instituted early are thought to have greater lifetime benefits. healthy lifestyles will delay the progression of cad, and there is hope that cad can be regressed before it causes chd.”

  living a healthy lifestyle that incorporates good nutrition, weight management and getting plenty of physical activity can play a big role in avoiding cad.

    “coronary artery disease is preventable,” agreed johnny lee, m.d., president of new york heart associates, and an american heart association volunteer. “typical warning signs are chest pain, shortness of breath, palpitations and even fatigue.” if you feel any of these symptoms, don’t delay — call 9-1-1.