0
The veins through which blood returns from the legs are mostly on the
underside of the legs. Sitting for a prolonged period constricts these veins
and increases the net pressure in them, which is the blood's filtration
pressure less osmotic pressure and tissue turgidity. The excess fluid that is
not returned to the veins is normally returned via the lymph vessels, but
these too are constricted by prolonged sitting. Gravity increases the pooling
in the veins and lymphatics. This can be helped by taking breaks, elevating
and stretching the legs, and placing a cushion on the portion of the chair in
contact with the thighs. Exercise such as cycling can rapidly alleviate the
condition (by using the leg muscles to push out the fluid). If one can't
avoid sitting for a prolonged period, it is best to wear tight socks with
shoes, as they help to counteract the pressure imbalance that causes this.
(Source: Fleur Strand, Physiology (NY: Macmillan, 1978), pp. 51-52, 229-237and personal experience.)
Dependent edema can also be caused by a number of other more serious
conditions, particularly heart failure and high blood pressure. If you go to
a doctor, you should be examined to rule out such things, but I would
recommend that, particularly if you are in generally good health, that you try
simple solutions first before resorting to drugs or surgery. In their concern
to not miss a potentially serious condition, it is my experience that doctors
will often miss simpler, more benign and easily treated conditions which could
be causing the situation.
In fact, last night I was on the computer, with bare feet, for about two
hours, and I started to notice swelling in my ankles. Pulse was 48 bpm (I do
a lot of cardio) and blood pressure was 107 over 60. No shortness of breath,
cyanosis, etc. Rules out high blood pressure and heart failure. Elevated
feet for awhile, then when I sat down again, put a cushion there. Feet are
fine, problem solved.
Nick in NYC
What else can I help you with?
Do reptiles have menstrual cycles or periods?
No, reptiles do not have menstrual cycles or periods like mammals do. Instead, they have reproductive cycles that are different from those of mammals.
Do sheep have menstrual cycles?
No
Do bearded dragons have menstrual cycles?
No, bearded dragons do not have menstrual cycles. They do not menstruate like humans or some other mammals.
Can you conceive when you don't have menstrual cycles?
No.
Why did my menstrual cycles change?
because it just does.
Can the changes in weather make you spot in between menstrual cycles?
No. Weather has nothing to do with spotting. Your period is dependent on hormones within your body. You may have a problem go see a doctor.
Can Cipro affect your menstrual period?
Delayed menstrual cycles have been reported when taking Ciprofloxacin. The delay can also be caused by the urinary tract infection. Both can cause delayed menstrual cycles.
Are season cycles a density- dependent factor?
Crowding, disease, and competition are all density-dependent limiting factors EXCEPT, seasonal cycles. Seasonal cycles are NOT a density- dependent limiting factor.
What make your menstrual cycle irregular?
The most common causes of irregular cycles are puberty and menopause - when menstrual cycles start it takes time for the body to get into a pattern, and as the reproductive system slows down the cycle starts to become irregular again. Irregular cycles can be a result of hormonal imbalance which may be temporary and mild or may be a symptom of a bigger health problem.
How often do gerbils have menstrual cycles?
Once a month
When was Associated Motor Cycles created?
Associated Motor Cycles was created in 1938.
Does a doe as in deer have a menstrual cycle?
No. Humans are the only mammals with menstrual cycles. Deer, as well as other mammals, have estrous cycles. http://en.wikipedia.org/wiki/Estrous_cycle
