Stroke volume changes during exercise

Common Questions and Answers about Stroke volume changes during exercise


Avatar m tn This happens by a system of vasodilation and vasoconstriction coupled with the pumping rate and stroke volume of the heart. Rather than make frequent changes in volume, the body changes the configuration of the total container (all the vessels) and increases the speed at which the resource is renewed.
1124887 tn?1313754891 EF is a compensating factor and helps maintain a balancing flow of blood between the right and left side of the heart. Stroke volume is inverse to the heart rate. Slow heart rate the greater the stroke volume which indicates the heart rate is also a compensating factor...the slower the heart rate the more time to fill. Wide pulse pressure (no medication, etc) can be the outcome of increased CO due to fitness, anxiety, hyperthyroidism, etc.
1124887 tn?1313754891 I have average exercise tolerance. I also know my heart is on the small side so my stroke volume is probably not that great compared to an athlete. So, I think if you conditioned yourself your LVEF would probably stay the same. This is because all the factors in the equation should in theory increase at the same rate therefore the measurement will stay the same. However the stroke volume and cardiac output measure would increase.
Avatar n tn So I am thinking that I am just very deconditioned and my stroke volume is low and I need to wait for changes in muscle growth and circulation in my legs too. Am I too old to really increase my heart efficiency and stroke volume now?
Avatar m tn It's been 2yrs since my stroke and I have no voluntary movement in my left arm or hand. Is there any possibilty that i could recover any movement? My neurlogist told me that if within 6month of the stroke if I didnt have any movement that my hand will stay paralyzed?
Avatar m tn Muscles are in use, the GI system is working and moving, the mechanisms for regulating blood pressure does changes with changing body positions, stress levels, etc. And the heart constantly changes its stroke volume and heart rate, and changes can feel like something is too tight, the heart jumps out of the chest, or other terminology that people use to describe this sensation. They can all cause chest pain of variable degree and location.
Avatar m tn The brady-cardiac response to exercise can be due to increased stroke volume and also reflective of improved exercise economy, but that can be ruled out as the post suggests physical fitness is not a consideration. The mechanism regulating exercise induced bradycardia is not thoroughly understood, but may be related to a change in the balance between the sympathetic and parasympathetic activity.
Avatar n tn For a more definitive measurement a right heart catheterization is necessary because the exercise echocardiogram has limitations, namely the inability to measure left-sided filling pressures and cardiac output (stroke volume) that is in part needed for evaluation.....
Avatar n tn Return of systemic blood to the heart is impeded by the pressure inside the chest. The output of the heart is reduced and stroke volume falls. This occurs from 5 to about 14 seconds in the illustration. The fall in stroke volume reflexively causes blood vessels to constrict with some rise in pressure (15 to 20 seconds). This compensation can be quite marked with pressure returning to near or even above normal, but the cardiac output and blood flow to the body remains low.
Avatar n tn I'm 46 years old and have been told by my doctor I have a slightly enlarged heart and 2 enlarged valves. I've never smoked, don't do drugs,I drink socially although that is limited because I only have 1 weekend off a month and I don't drink during the week. I exercise (lift weights, not much cardio) 3 days a week, and have a job that keeps me active. I am in pretty good shape, 6'2" and 200 pounds. I was just wondering, what causes this in an otherwise healthy person?
11478709 tn?1526751275 Hi Irakli. Greek-Cypriot background perhaps? Your skating sessions are presently likely causing lactic acid to build up to a level where it causes vasodilation ( blood vessels get dilated) so there's sustained higher blood flow, less blood volume in the heart, thus lower blood pressure. Also the increased heat generated by the exercise, causes dilation of blood vessels in turn as a compensatory mechanism to lower heat, this too contributes further to lowering blood pressure.
Avatar n tn i have been suffering from shortness of breath for 5 months.recently i have a echocardiogram. it shows that my stroke volume is 47 ml . is this is a normal value or it is a sign of a heart disease? my ef is 61%.
Avatar m tn What factors that influence ejaculate volume can be changed? As I get older, both the volume and the projection of my sperm has been decreasing. Can it be changed?
Avatar m tn HI, I am a relatively healthy 22 year old that runs 3 miles 5 days a week at an 8 min/mile pace. My normal blood pressure and resting heart rate are 118/76 and around 50 BPM. My question is more for my general knowledge because I can't seem to find a solid answer. Specifically, what exactly happens to one's blood pressure during exercise? I took my blood pressure within one minute of my run today and it was 103/58 and 139 BPM.
Avatar m tn A faster heartbeat does not provide enough time to fill as at rest, and the timing of contractions are less. The percent of blood pumped with each heartbeat is less reducing stroke volume (lower EF). The heart rate has increased to provide the necessary blood/oxygen to meet the system's demand for the diminished stroke volume. The CT scan indicates there is substanital soft plaque buildup within the linings of the vessels.
1124887 tn?1313754891 It all has to do with stroke volume. I think some of the gains in stroke volume that athletes get is attained through muscle stretch, from what I’ve read over the years. Again I'm thinking along the lines of "too much of a good thing".
Avatar n tn I think in laymans terms, an area of the heart was found to have insufficient oxygen during exercise, but was fine during rest. Another area was found to have insufficient oxygen at both rest and exercise, which usually means dead tissue. However, they believe this is probably a scanner problem, so a PET scan is recommended to end the confusion. Reversible ischaemic changes means the oxygen is too low for exercise in a given area of heart muscle, but adequate when you are resting.
907968 tn?1292622204 A healthy cardiovascular system will raise the pulse pressure (PP) with exercise (more forceful contractions and increase in blood volume per stroke) destinquished by the increased systole metric and diastole stays about the same. There is a return to normal PP (about 40) in several minutes. The following supports a change in blood pressure with a heart attack (stroke volume is decreased). " In trauma a low or narrow pulse pressure suggests significant blood loss.
Avatar m tn I had stroke on October 2008 and until right now I still can not use my right hand. My question is "Is there any exercise I can do at home especially for my right hand and my right shoulder?" I have limited movement on my right body.
1527234 tn?1291771442 In this phase due to F/S phenomonon the ventricular myocardium is no longer able to contract adequately to compensate for the volume overload of mitral regurgitation (volume overload can be do to other causes), and the stroke volume of the left ventricle will decrease. The decreased stroke volume causes a decreased forward cardiac output and an increase in the end-systolic volume dilates left ventricle.
287996 tn?1312023682 In a structurally normal heart they are no concern. If you look on the internet you'll see conflicting information about palpitations during exercise, but I've seen both a really good cardiologist and electrophysiologist and both were of the opinion that palpitations are benign, and of no concern unless you have bad structural abnormalities to your heart.
Avatar m tn For instance, how are systemic vascular resistance, blood volume, stroke volume, cardiac output, etc affected. I am wondering if an HOCM heart relies on a hyperdynamic state from hyperthyroidism, and if going euthyroid will harm the cat.
Avatar n tn The only way I know of to lower resting heartrate is to strengthen your heart through exercise (it improves the efficiency of your muscles including the heart and also increases the stroke volume of the heart so that you pump more blood with every beat) but I don't know how issues like age, heart disease etc affect that process.
Avatar n tn I don't think its the Toprol that is causing your decreased heart rate. I feel it reduces mine by maybe 10 bpm at the most at the 25 mg dosage. The prescribing info claims 14% reduction for a 50 mg dose, the lowest tested. Its commonly prescribed as high as 200 mg, so our 25 mg is very low. For what its worth, the effect of beta blockers seems to wear off with me as I run further.
Avatar n tn echo result my heart function down to 50% i was stroke 2x my first mild stroke last May 2011 and the second is this year May also.. how can i increase the function of my heart,. im just 25 years old and im afraid,. please help me,. ThankU,...
Avatar m tn Now, obviously at 15% EF you would be considered to be in systolic heart failure. Your stroke volume (the amount that gets pumped out to the body with each beat) should be above 50mL, so at 15% it would be virtually impossible to reach this healthy stroke volume minimum unless you had an insanely high LVEDV. You'd have to have 333.5mL end diastolic volume in the left ventricle, which can only be achieved if the heart stretches out to an unhealthy level.