Pregnancy is a period when, for the sake of small happiness, a woman has to endure many unpleasant moments that violate her general condition. One such condition is the sensation of paresthesias and muscle cramps.
Under normal conditions, the human body has a normal ratio of different electrolytes, which provide nerve conduction and good muscle stimulation. This process is controlled by the content of calcium, magnesium and potassium in the body. During pregnancy, these trace elements are redistributed in such a way as to ensure the development of the child, so for their mother may not be enough. Deficiency of vitamins and trace elements during pregnancy is a frequent phenomenon, but not all are concerned about the problems of leg cramps. Therefore, it is necessary to take into account also other factors.
To understand the pathogenesis of seizures in muscle tissue, you need to know about the role of certain electrolytes in the human body.
Calcium is a microelement that provides cardiac activity, the work of muscle and nerve fibers, as well as the structure of bone tissue. Calcium also takes part in the normal conductivity of the impulse and the contraction of muscle fibers. He is the main initiator of muscle contraction at the moment when he enters through the calcium channels inside the cell. During pregnancy, a large amount of calcium is necessary for the structure of the child's bone tissue, therefore, an increased intake of this element from the external environment is necessary. In conditions of calcium deficiency, the work of the channels is disrupted and the open calcium channels are replaced by sodium, which causes an increase in the level of sodium in the muscle cell. Increased calcium content inside the cell causes a huge inflow of water, which in turn promotes intracellular hyperhydration. The edema of the muscle fibers causes compression of the nervous ganglia and nerve endings - this worsens the conductivity of the nerve impulse from the muscles to the centers of the brain. This is perceived as a feeling of numbness of the legs or their cramps.
Magnesium is an element that provides for the impulse to travel through nerve cells. The work of the nerve, which provides the innervation of one or another muscle fiber, in this case depends on the amount of magnesium. Under normal conditions, there is a balance between magnesium and calcium, and the processes of conduction of the nerve impulse are settled. Calcium through slow channels goes inside the cell and there is a muscle contraction, and then magnesium provides relaxation of the muscle fiber by nerve impulse from the nerve fiber. When magnesium is not enough, the process of impulse to the nerve ganglion from the muscle fiber does not proceed properly, which can lead to numbness or excessive muscle contraction in the form of seizures of certain muscle groups. Thus, the combined deficiency of magnesium and calcium is the reason that it reduces the legs.
Given the shortage of trace elements, as the main reason for the development of the problem of numbness of the legs during pregnancy, do not forget about the possible other causes of such pathology. Very often women in the second half of pregnancy are concerned about the problem of fluid retention and the development of edema on the legs. This is due to the fact that an increase in the weight of the fetus disrupts the outflow of venous blood through the system of the inferior vena cava, and also the lymph drainage is disturbed. Therefore, the problem of edema of the extremities can be very pronounced. In this case, not only the innervation processes are violated, but the severity of the edema can be a cause of compression of the nerve channels, which causes a violation of innervation. This can be one of the reasons that reduces legs during pregnancy, especially in the evening, after long walks or loads on the limbs.
It should also be noted that in women with varicose veins of the lower extremities, the cause of numbness of the legs is very often due to the fact that the process of outflow of venous blood is disrupted, and the enlarged veins bring considerable discomfort.
Pregnancy is a risk factor for the development of gestational diabetes, even if the woman was not previously diabetic. Therefore, the reason that reduces legs during pregnancy, can also be diabetes. The pathogenesis of the development of such symptoms is that when insulin deficiency glucose does not go the full pathway of metabolism and form a huge amount of an intermediate metabolite - sorbitol. Sorbitol is a substance that can accumulate in blood vessels that supply blood to nerve fibers - vasa vasorum. This disrupts the trophism of nerve fibers and causes paresthesias, that is, sensations of numbness in the hands. Therefore, with this pathology, it is very important to exclude diabetes mellitus as a possible cause of paresthesias.
Another possible cause of seizures or numbness of the legs during pregnancy can be considered a neurological disease in the form of osteochondrosis or arthrosis of the lumbar spine. This results in the compression of the nerve endings, which causes a violation of the normal conductivity of the nerve impulse with a sensation of numbness. This pathology is more serious and requires correction, and is more common in older women.
If you reduce your legs during pregnancy, also do not forget about the syndrome of the inferior vena cava - compression of the fruit of this structure causes a violation of the outflow from the lower limbs. This can lead to impaired circulation of the pelvic organs, and the innervation of the organs and lower limbs is provided by the pelvic plexus, so these symptoms arise.