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Many changes take place in a woman's body during pregnancy. Some organs move to make more space for the uterus, which will grow as the months go by.
The cardiovascular system The pregnant woman is also affected by these changes in the woman's body. Hence, during pregnancy, the woman feels that her 'rhythm' is different. Sometimes you feel more tired. Others, accelerated. We explain why.
The first modifications in the Cardiovascular system, they are seen early, so already during the first trimester of pregnancy it can be observed in the pregnant woman both an increase in heart rate such as a relaxation of the vessel walls.
Later, an increase in circulating blood volume can be observed, which occurs among other reasons due to the need to irrigate the fetus and the placenta. This increase in volume occurs in parallel with a increased blood cells Therefore, in a pregnant woman we will find lower hemoglobin and hematocrit figures than in a non-pregnant woman, these being completely normal. Due to these last two changes, the volume of blood that the pregnant woman's heart pumps to cope with the new demands increases.
The heart, being displaced due to the increase of the uterus from its normal position, shows alterations in the electrocardiogram that we also consider physiological, as well as the change in the tones of cardiac auscultation. Also due to the overexertion that it carries out during pregnancy, the heart sometimes hypertrophies.
Blood pressure drops during the first half of pregnancy, to increase again. The pressure in the inner limbs due to the compression of the vessels by the uterus, which makes the flow more intense and can cause varicose veins and edema, in addition to favoring the appearance of thromboembolic problems
In the later stages of pregnancy, when the pregnant woman is lying on her back (supine ulna), the uterus can compress vena cava which is one of the vessels that is responsible for transporting the venous return of the lower half of the uterus, producing hypotension in women. This can be avoided slightly raising the headrest or slightly turning the body of the pregnant woman to the left a minimum of 15 degrees.
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