| 单词 | cardiac output |
| 例句 | Studies show “notable reductions in VO2 max within two to four weeks of non-training, mostly due to decreased cardiac output and decreased blood volume,” she says. How long does it take to get out of shape? 2015-04-14T04:00:00Z Many of the signs of aging are invisible, slow, and subtle — changes in cell division capacity, cardiac output and kidney function don’t exactly show up in the mirror. Your Hair Is Going Gray. This Glitch May Explain Why. 2023-04-19T04:00:00Z "A pulse rate of 240bpm, the cardiac output, no radial pulse - I thought that would attract cardiologists from all over the country," said Mr Christie. Peterborough hospital death: Christian Hobbs, 17, 'not seen by cardiologist' 2022-10-03T04:00:00Z Assuming cardiac output is 5 L/min, determine the average velocity of blood flow through each capillary vessel. College Physics for AP Courses 2015-08-12T00:00:00Z This is because of a phenomenon called recruitment, which is the process of opening airways that normally remain closed when cardiac output increases. Biology for AP Courses 2022-06-09T00:00:00Z Venous return to the heart is reduced, a condition that in turn reduces cardiac output and therefore oxygenation of tissues throughout the body. Anatomy and Physiology 2013-06-19T00:00:00Z Pregnant people’s hearts also work more — a 50 percent increase in cardiac output. Opinion | Readers critique The Post: Missing an important point on pregnancy and the coronavirus 2021-10-22T04:00:00Z And low cardiac output occurs when not enough blood is being returned to the heart from the lower body. Low blood pressure could be a culprit in dementia, studies suggest 2019-10-02T04:00:00Z Another is to increase blood flow to the skin — by boosting cardiac output with a faster heart rate and widened blood vessels, among other mechanisms. Kids in hot tubes can be safe if supervised 2019-09-20T04:00:00Z These checks and balances include valves and feedback mechanisms that reduce the rate of cardiac output. Biology for AP Courses 2022-06-09T00:00:00Z The two kidneys receive about 25 percent of cardiac output. Anatomy and Physiology 2013-06-19T00:00:00Z Among the sex-linked traits she cites as advantages for male athletes are more skeletal muscle, less fat and larger hearts with higher cardiac output. Mary Gregory, transgender powerlifter, stripped of world records 2019-05-15T04:00:00Z Under terrestrial conditions, increases in stroke volume are usually accompanied by increases in heart rate to boost total cardiac output. Surgery in Space: Medicine's Final Frontier 2018-10-12T04:00:00Z Heart rate and cardiac output increases, and blood becomes more prone to clotting. A Troubling Rise in Pregnancy-Related Heart Problems 2018-08-13T04:00:00Z Therefore, cardiac output can be increased by increasing heart rate, as when exercising. Biology for AP Courses 2022-06-09T00:00:00Z Cardiogenic shock results from the inability of the heart to maintain cardiac output. Anatomy and Physiology 2013-06-19T00:00:00Z Harrison said that re-assessment of the patient inside the ambulance indicated further deterioration of his condition and a decline of cardiac output. Paramedics save man after whole fish jumps down throat 2017-10-12T04:00:00Z Mr Lewis told the court that paramedics attended the house and found Elsie was not breathing, with no signs of cardiac output. Adopted baby 'murdered' after two weeks 2017-10-09T04:00:00Z The ability to prevent or reverse fluid pooling, allowing individuals to maintain cardiac output, should, in theory, help these individuals maintain RMR while performing sedentary activities. Why do so many people regain weight after going on a diet? 2016-12-29T05:00:00Z However, cardiac output can also be increased by increasing stroke volume, such as if the heart contracts with greater strength. Biology for AP Courses 2022-06-09T00:00:00Z The pulse strength indicates the strength of ventricular contraction and cardiac output. Anatomy and Physiology 2013-06-19T00:00:00Z Possible Effects: These drugs decrease your heart rate, blood pressure and cardiac output, which can make you feel tired, sluggish and short of breath during a workout. Is Your Medicine Ruining Your Workout? 2016-05-04T04:00:00Z And this decrease reduces both cardiac output and oxygen delivery to the muscles, which translates to a lower VO2max and thus to lower performance in endurance events as we age. How Aging Affects Athletic Performance 2015-07-11T04:00:00Z Study results also indicate that by raising cardiac output back to normal resting levels, RMR returns to normal levels while individuals are sitting quietly. Why do so many people regain weight after going on a diet? 2016-12-29T05:00:00Z Recreational exercise often works large muscle groups in a more varied way that increases the metabolism and cardiac output of the whole body, they write. Vigorous workouts, but not work, tied to blood pressure 2013-10-17T20:07:20Z Changes in diameter affect peripheral resistance, pressure, and flow, which affect cardiac output. Anatomy and Physiology 2013-06-19T00:00:00Z Rich said he was impressed with the apparent ability of the higher dose of the drug to increase cardiac output, or the volume of blood pumped by the heart per minute. FDA advisory panel recommends approval of Bayer lung drug 2013-08-06T19:27:06Z Alternatively when someone is relaxing, the parasympathetic nervous system is to the fore, reducing cardiac output by reducing heart rate, and increasing blood flow to the digestive system, taking it away from the muscles. How the heart reacts at 200mph 2013-05-27T11:17:30Z As a result, cardiac output is a primary determinant of metabolic activity. Why do so many people regain weight after going on a diet? 2016-12-29T05:00:00Z A test in August 2006 revealed normal cardiac output, according to his records. Hospice Turns Months-to-Live Patient Into Years of Abusing Drugs 2011-12-30T09:38:24Z This will trigger an increase in sympathetic stimulation of the heart, causing cardiac output to increase. Anatomy and Physiology 2013-06-19T00:00:00Z The scientists were also able to measure heart rate and cardiac output much more accurately than previous methods which were either indirect or highly invasive. Inside a spider 2011-07-01T11:49:40Z Sympathetic stimulation also triggers the release of epinephrine and norepinephrine, which enhance both cardiac output and vasoconstriction. Anatomy and Physiology 2013-06-19T00:00:00Z Any factor that causes cardiac output to increase, by elevating heart rate or stroke volume or both, will elevate blood pressure and promote blood flow. Anatomy and Physiology 2013-06-19T00:00:00Z This increase in size generally makes the heart stronger and more efficient at pumping blood, increasing both stroke volume and cardiac output. Anatomy and Physiology 2013-06-19T00:00:00Z If the sympathetic system cannot increase cardiac output, then blood pressure into the brain will decrease, and a brief neurological loss can be felt. Anatomy and Physiology 2013-06-19T00:00:00Z Along with this increase in cardiac output, blood pressure increases from 120/80 at rest to 200/90 at maximum values. Anatomy and Physiology 2013-06-19T00:00:00Z The variables affecting blood flow and blood pressure in the systemic circulation are cardiac output, compliance, blood volume, blood viscosity, and the length and diameter of the blood vessels. Anatomy and Physiology 2013-06-19T00:00:00Z The kidneys are well vascularized, receiving about 25 percent of the cardiac output at rest. Anatomy and Physiology 2013-06-19T00:00:00Z In a healthy young adult, what happens to cardiac output when heart rate increases above 160 bpm? Anatomy and Physiology 2013-06-19T00:00:00Z This typically prompts the heart rate to increase to about 180–200 contractions per minute, restoring cardiac output to normal levels. Anatomy and Physiology 2013-06-19T00:00:00Z Conversely, any factor that decreases cardiac output, by decreasing heart rate or stroke volume or both, will decrease arterial pressure and blood flow. Anatomy and Physiology 2013-06-19T00:00:00Z |
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