Increased stroke volume definition

Common Questions and Answers about Increased stroke volume definition


Avatar m tn the same MAP regardless of if heart rate is 100 and stroke volume 100 ml, or the heart rate is 50 and stroke volume 200 ml, the same is not true for pulse pressure (sys minus dia). While the first might have a blood pressure of 140/90 and a MAP of 105 mmHg, the latter may have a blood pressure of 180/70 and the same MAP. Everyone have their unique stroke volume:pulse pressure ratio, depending on arterial compliance/stiffness. In general, a lower number may indicate higher arterial stiffness.
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 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.
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 I had a cardiopulmonary exercise stress test and went back for the results, I had gotten info from you re the VO2max numbers so I could try to understand what the doctor would tell me, instead the doctor said they measured the stroke volume and mine was "16" which he thought was low, what does this 16 mean, what would an average number be for a 55 year old female?
Avatar n tn You can't measure stroke volume with the heart rate. Stroke volume is the amount of blood that your left ventricle pumps out with each heart beat. If you multiply the stroke volume by the heart rate you get your cardiac output.
Avatar n tn In addition to management of the underlying causes, major considerations in acute treatment of increased ICP relates to the management of stroke and cerebral trauma.The standard modes of treatment are hyperventilation,controlling blood pressures with calcium channel blockers, reducing mass effect with craniotomies, inserting an extraventricular drain, medications like mannitol can also help. Consult your neurophysician for further assistance. Best.
Avatar n tn Posted By Pat on August 20, 1998 at 09:43:30: I had a cardiopulmonary exercise stress test and went back for the results, I had gotten info from you re the VO2max numbers so I could try to understand what the doctor would tell me, instead the doctor said they measured the stroke volume and mine was "16" which he thought was low, what does this 16 mean, what would an average number be for a 55 year old female?
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 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.
907812 tn?1245739802 what does it mean by hepatic parenchyma is increased?
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.
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.
Avatar n tn Normal is 7.5-11.5, so yours is only increased by a miniscule amount. There's wiggle room in every blood test, so yours probably isn't anything to worry about. Your glucose is another matter. Worry about that, and get your doctors advice. Was that a single glucose level? Or one of the 2 hour GTT results? Fasting? After eating?
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 n tn i had a echocardiogam which shows that my stroke volume is 47 ml is it a normal value or it is a sign of heart failure.all other things are normal in my echo. my ejection fraction is 61.4%.
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.