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The subject immediately sits down on completion of the test, and the heartbeats are counted for 1 to 1.5, 2 to 2.5, and 3 to 3.5 minutes. [3] The results are written down as time until exhaustion in seconds and total heartbeats counted (). It is plotted into a simple fitness index equation: [3]
The test score is the time taken on the test, in minutes. This can also be converted to an estimated maximal oxygen uptake score using the calculator below and the following formulas, where the value "T" is the total time completed (expressed in minutes and fractions of a minute e.g. 9 minutes 15 seconds = 9.25 minutes). As with many exercise ...
Major factors influencing cardiac output – heart rate and stroke volume, both of which are variable. [1]In cardiac physiology, cardiac output (CO), also known as heart output and often denoted by the symbols , ˙, or ˙, [2] is the volumetric flow rate of the heart's pumping output: that is, the volume of blood being pumped by a single ventricle of the heart, per unit time (usually measured ...
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Cardiac index is a critical parameter in evaluating cardiac performance and the adequacy of tissue perfusion. In healthy adults, the normal range of cardiac index is generally between 2.6 to 4.2 L/min/m².
Duke Treadmill Score is a tool for predicting the risk of ischemia or infarction in the heart muscle. [1] The score is a function of data from an exercise test : [ citation needed ] [ 1 ] [exercise duration in minutes, by Bruce protocol ] – [ 5 × (maximal ST elevation or depression , in millimeters)] – [4 × (treadmill angina index)]
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With a heart rate of 80 beats/minute and a systolic ejection period of 0.33 seconds, the cardiac output was 5 liters/minute. During simultaneous measurement of pressures in the left ventricle and aorta (with the use of one catheter in the left ventricle and a second in the ascending aorta), the mean systolic pressure gradient was measured at 50 ...
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262 Neil Avenue # 430, Columbus, Ohio · Directions · (614) 221-7464