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Doctor insights on: Are Arms And Legs In Competition For Cardiac Output

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Are arms and legs in competition for cardiac output?

Are arms and legs in competition for cardiac output?

Cardiac Output: The body will preferentially direct cardiac output to organs it deemes most vital for sustaining life. This is in (relative) order: brain, heart, kidneys, gut, muscle and skin. There is no real competition between upper and lower extremities, but rather distribution based on muscle activity and intensity. Fun question! ...Read more

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Dr. Cynthia Archer
918 doctors shared insights

Cardiac Output (Definition)

Cardiac output is a measurement of the amount of blood a person's heart can pump out during a set amount of time. The measurements help doctors figure out how strong or weak ...Read more


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My father is in hospital with ten percent heart function and fluid build up in legs and ankles (they are weeping). What can we expect?

My father is in hospital with ten percent heart function and fluid build up in legs and ankles (they are weeping). What can we expect?

EF10%: 10% EF is severe,if properly managed is survivable. Diuresis ,is critical start w/ IV. Dietary adherence to very lo salt diet is essential as is medication compliance Individuals with low EF get defibrillators because they are at higher risk for fatal arrythmias. Check if has blockage as resolution of blockage with stent can improve function, as can unloading the excess fluid. f/u w/doc ...Read more

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How is done heart ergometry at persons which are unable undergo this test on exercise bike and/or treadmill due to handicap their lower limbs?

How is done heart ergometry at persons which are unable undergo this test on exercise bike and/or treadmill due to  handicap their lower limbs?

2 main options: Either exercise using the arms on a bike-pedal device, or more commonly, medications are used that simulate exercise effects on the heart, & heart response / ECG monitored, sometimes including echocardiogram. (chemical stress test or echo). ...Read more

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Shiver felling on one side of body similar to being cold, vitals are good, strength is equal in both hands and feet face is symmetrical possible dehy?

Shiver felling on one side of body similar to being cold, vitals are good, strength is equal in both hands and feet face is symmetrical  possible dehy?

Could be anything: These symptoms can be due to many different possible causes. Only way to know is to see your doctor, get examined and tested and treated if necessary. Good luck. ...Read more

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How important is pulse pressure? BP is 119/63. Having weakness in arms and legs.

How important is pulse pressure? BP is 119/63. Having weakness in arms and legs.

Pulse pressure: Is the difference between the upper systolic pressure and the lower diastolic pressure. It is very important because a wide pressure can indicate poor control of the arterial system. This can be caused by vitamin B1 deficiency, usually caused by an intake of sugar and sweeteners. This may be the cause of your leg and arm weakness ...Read more

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Can muscle twitching in calves and eye lids and some other body parts and weight loss last for 3 months or so with depression and anxiety?

Can muscle twitching in calves and eye lids and some other body parts and weight loss last for 3 months or so with depression and anxiety?

Depression wt loss: Yes, anxiety can cause a variety of symptoms including twitching (not twerking), and depression can lead to weight loss as there are appetite changes and you just don't feeling hungry. ...Read more

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My resting heart rate is about 80. I work retail and do a lot of standing and walking, not brisk walking. My heart rate goes anywhere from 109-130 ok?

My resting heart rate is about 80. I work retail and do a lot of standing and walking, not brisk walking. My heart rate goes anywhere from 109-130 ok?

Improve fitness: A healthy resting heart rate would be under 60 bpm, and for light exercise it shouldn't go over about 110. That is a good measure of fitness but can also be affected by medications, caffeine, dehydration, and lack of sleep. ...Read more

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Very sedentary with depression. Now weak legs. How best to strengthen the legs please. Will I get heart failure from lack of exercise?

Very sedentary with depression. Now weak legs.  How best to strengthen the legs please.  Will I get heart failure from lack of exercise?

Sedentary: You need to get up and get moving. Start walking daily even if its in 5min increments and boost to a total of 1hour steady walking daily....minimum. If you stay sedentary there are certainly health issues from that and there are many pluses to the exercise. Less depression is one of the big benefits of exercise. ...Read more

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Numb/tingling in hands, legs, and feet on both sides. Muscle spasms in legs, back and arms. Loss of balance, dizzy, stiff. Is it Neuropathy or ms?

Numb/tingling in hands, legs, and feet on both sides. Muscle spasms in legs, back and arms. Loss of balance, dizzy, stiff. Is it Neuropathy or ms?

Bad choices: You probably don't need or want to pick A or B. Both require a doctor's DX and TX and it might be another thing altogether. A common cause of neuropathy is a diabetic condition w/ other signs too - are you a diabetic? Get into care if 'yes'! MS usually starts a bit later in age. Have an exam to find an answer. Best! ...Read more

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What can cause severe burning pain in my biceps thighs and calves without working out ? Doctors are confused as CPK lactic acid and other test are nor

What can cause severe burning pain in my biceps thighs and calves without working out ? Doctors are confused as CPK lactic acid and other test are nor

Questions raised : A lot more information is needed. Are these the only symptoms? Constant? New? Length of time present? What makes it worse? What makes it better? What other tests? Labs? Emg ncv? Brain/spine mri? Skin biopsy? Muscle biopsy? ...Read more

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What can cause tingling in both lower arms and legs? NOT hands and feet. Persistent for 3 weeks. Also when sitting or resting. No loss of sensation.

Tricky: Ok, there's two main distributions of nerve problems: outward along an (injured) nerve or inward from the tips of (sick) nerves. Nerve problems in the middle of limbs.. all four....would not be a regular nerve distribution. Muscle weakness from electrolytes (K, Ca, Mag), sick muscles. No, not fitting with standard patterns. Neurologist would be a specialist in this sort of condition. ...Read more

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Blood pooling in arms. They ache and have white splotches on palms and finger. Called in event monitor normal. Bp 117/78 high for me. Dangerous?Cause?

Blood pooling in arms. They ache and have white splotches on palms and finger. Called in event monitor normal. Bp 117/78 high for me. Dangerous?Cause?

Complicated: This isn't a cardiac symptom - you may have reynaud's phenominon or an autoinflammatory disease. You may need to be seen by a rheumatologist. Do you have joint swelling, stiffness, or pain ? ...Read more

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Is metoprolol cause bruises in leg and arm?

Is metoprolol cause bruises in leg and arm?

It may: Metoprolol may cause easy bruising or unusual bleeding. Please let your prescribing provider know. ...Read more

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4 year old has on and off edema in face and abdomen. Also muscle weakness and is tired often. Bun is 32 creatinine is 0.1. Kidney dysfunction?

4 year old has on and off edema in face and abdomen. Also muscle weakness and is tired often. Bun is 32 creatinine is 0.1. Kidney dysfunction?

Swelling: What you are describing could be glomerulonephritis that is causing swelling of face, and bun. You need to make sure they resting the urine for blood. Blood pressure need to be checked too. Good luck ...Read more

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Is muscular exercising to strengthen arms and legs in someone with one kidney, creatinine 1.49 & eGFR 42 harmful because it may increase creat.level?

Is muscular exercising to strengthen arms and legs in someone with one kidney, creatinine 1.49 & eGFR 42 harmful because it may increase creat.level?

No: It's good for you. In fact, if you're working out and feeling okay at age 68 with a creatinine of 1.49, I seriously doubt you have anything wrong with your kidneys beyond a bit of age-related wear-and-tear, or any reason to be concerned. When I was lifting daily as a young doctor, my creatinine ran 1.6-1.7. Hit the gym and treasure the time there. ...Read more

Cardiac (Definition)

Cardiac translates literally to "heart, " and any place the term is seen, such ...Read more