Increased stroke volume definition

Common Questions and Answers about Increased stroke volume definition


Avatar n tn The pressure on the chest is released, allowing the pulmonary vessels and the aorta to re-expand causing a further initial slight fall in stroke volume (20 to 23 seconds) due to decreased left ventricular return and increased aortic volume, respectively. Venous blood can once more enter the chest and the heart, cardiac output begins to increase. 4.
1124887 tn?1313754891 So a parameter that increases volume will increase blood flow and the stroke volume is increased with an increase in contractility. Higher EF stronger contractility. The converse is true a reduction in volume the lower the contractility and lower stroke volume. Your question seems to be addressing the control factors to maintain integrity of a balance of blood flow between the left and right side of the heart....
Avatar m tn CO is a product of blood volume per heart stroke and heart rate. The higher/better the stroke volume (weak, strong, stronger contractions) the fewer heart beats (more for weak, less for strong, least for stronger) are required to meet demand (held constant for illustration) for blood oxygen. A well-condition individual requires fewer heartbeats due to strong contractions. It is the stroke that determines EF...not the CO, as CO can vary by an increase or decrease of HR.
Avatar n tn Diastolic volume (filling phase) per stroke is blood volume measured at end of diastolic (maximum filling capacity...relaxed state) minus the volume at the end of systole (minimum amount of blood left in the chamber). Divide end diastolic volume into the difference between end systole and end diastole is the fraction (%) pumped with each stroke. CHF by definition is an EF below 29% (left side non-compliance) indicating there may be an insufficient blood/oxygen supply meeting system demand.
Avatar f tn I am a healthy, fit, and very active 47 year old woman--healthy lifestyle and diet, runner, and I ride my bike for transportation. Resting HR of 52. PACs started a few weeks ago, so got a Holtor which reported over 4000 PACs/24 hours (that was half of what they had been previously), sleeping HR went as low as 41. Had an echocardiogram the other day, and everything was normal, except: "severely increased left atrial volume." Mysteriously, left atrial *size* (i.e., diameter) was normal.
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.
Avatar n tn The treatment for clots in the ventricle is warfarin. The clots usually become firm and do not embolize with time. If it is still soft clot, the warfarin will help to slowly reduce the size of it. There isn't much else that needs to be done now. I understand your concern about stroke. The longer you go on warfarin, the less likely you are to have a stroke from that source.
Avatar m tn For a perspective, diastole dysfunction compromises left ventricle filling volume, inadequate stroke volume and operating at a high pressure regimen. LV filling volume is reduced due to increased wall size crowding out available space. Inadequate stroke volume is usually due to wall thickening and stiffening and loss of elasticity. High pressures can dilate upper chamber to compensate for gradient pressure across the mitral valve. That is the pathology.
487969 tn?1249313291 My blood pressure is just like yours! I used to be ~120/88 or something, but now I'm around 98/65. I thought this was significant--or at least a clue--in figuring out what was wrong with me since this was a significant drop in pressure that has remained constant. But of course, the doctors don't seem to care.
1527234 tn?1291771442 The decreased stroke volume causes a decreased forward cardiac output and an increase in the end-systolic volume dilates left ventricle. And the increased end-systolic volume translates to increased filling pressures of the left ventricle and increased pulmonary venous congestion causing symptoms of congested heart failure. You should have an echocardiogram to determine left ventricle size and degree of MVR. Hypercardiomyopathy can have many causes and can be successfully treated.
907812 tn?1245739802 what does it mean by hepatic parenchyma is increased?
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.
Avatar m tn The mean arterial pressure is a term used in medicine to describe an average blood pressure for an individual. It is defined as the average arterial pressure during a single cardiac cycle. Usually, blood pressure is assessed with multible heart cycles at least for a minute, and that would then include the heart rate. The etiolgy of a serious valve disorder would be to reduce the cardiac output (CO is stroke volume for each heartbeat times heart rate).
Avatar n tn MPV reflects the average volume of your platelets. A high MPV is associated with a high risk of heart attack and stroke. The normal range is 7.5 to 11.5. MPV will vary with platelet production; younger platelets are larger than older ones. I don't know why you were having these test done. Your history and symptoms are a major deciding factor as to whether or not your values are an indicator of illness. There are a multitude of ways to interpret your results.
Avatar m tn Hey, i just got this off some Dr's site ( ) The cause of white matters signal abnormality could be caused by: Aging and risk factors such as hypertension and diabetes. Sleep apnea, with the episodes of hypoxia, is another cause of these findings. They are not exactly "normal" findings, as they are associated with increased risk for stroke and cognitive decline in the long term, but are not always indicative of a stroke.
Avatar f tn As you know EF is a measurement of the heart's pumping output in VOLUME with each stroke. The heart chambers' size is not rigid (unless hypertrohic, etc.) but elastic and varies in dimension (LV volume capacity) to maintain a compensatory balance between the right and left chambers when there is not a dysfunctional system. To better understand, there is a similar test called fractional shortening (FS).
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.
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%.
907968 tn?1292622204 Q:"OK, this is all fine and good and understood. What about the other side of the question, a small, or would it be considered "short"(?) pulse pressure such as below 40, say mid 30's (my stated 36) or even in the 20's? Got that bike. rode it till my legs hurt bad, maybe 200 foot. rested and rode it more, made it around the block but had to walk it up the hills.
Avatar m tn What is the definition of acute Atrial fibrillation? Is it related to duration or symptoms? How the atrial fibrillation with fast ventricular rate should be treated in hemodynamically stable patients? What are the choices available? How the patient with acute ischemic stroke & atrial fibrillation with fast ventricular rate should be treated? Will the medicines controlling the heart rate not lower down the blood pressure, resulting in worsening of stroke?
Avatar f tn I guess because I heard when your pregnant your volume in blood increases and I thought maybe that was why.
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 f tn Some of it may be an adrenaline rush, some of it may be due to the extra force of the increased amount of stroke volume that occurs in the beat after a PVC (which is actually the palpitation you feel) and some of it may have to do with the irritation of a nerve. But, so long as your echo, stress test, and/or MRI is normal this is not a sign of ischemia in the heart, so it is a benign finding.