The uterus gradually increases after pregnancy, which increases the abdominal pressure and the pressure of the inferior vena cava. Especially when the fetal position is not correct, the compression becomes more obvious, which obstructs the venous return of the lower rectum and anal canal, leading to congestion and expansion of the hemorrhoidal venous plexus.
In addition, when the perineum is angered during childbirth, it can aggravate the hemorrhoidal vein reflux obstacle. Increased progesterone content in the body during pregnancy can cause water and sodium retention, vasodilation, and induce hemorrhoids.
The amount of activity of pregnant women is reduced, and gastrointestinal peristalsis slows down. Stool stays in the intestinal cavity for a longer time during each class, leading to constipation, and difficulty in defecation can aggravate the onset of hemorrhoids.
Various reasons for appeal have greatly increased the incidence of pregnant women.
Hemorrhoids in pregnant women should not be treated with surgery, even if surgery is necessary, it is best to put it after delivery. Conservative treatment measures include eating more fruits and vegetables, maintaining smooth bowel movements, regular prenatal check-ups, correcting fetal position errors, participating in activities appropriately, ensuring a certain amount of rest, taking some hemostatic drugs such as vitamin C and K, and topical drugs are appropriate Jiuhua ointment, four yellow ointment, hemorrhoids ointment containing musk or bear bile, etc. should not be used. If surgery is required, it is best to be performed three months to six months after delivery.
(Peng Lianming, Department of Anorectal, Ningbo Ninth Hospital)