Why does bleeding stop after a dilation and curettage (D&C)?
Stopping bleeding after a curettage may result from several factors, including removal of the endometrial lining, reduction of inflammatory response, stimulation of uterine contractions, elimination of abnormal cells, and regulation of endocrine function. If any abnormalities occur after curettage, prompt medical attention is essential. Specific details are as follows:
1. Removal of the Endometrial Lining
Curettage removes abnormal tissues from the endometrium, such as endometrial hyperplasia or endometrial polyps. These abnormal tissues can cause rupture of endometrial blood vessels, leading to bleeding. By removing these pathological tissues through curettage, hemostasis can be achieved.
2. Reduction of Inflammatory Response
Curettage helps eliminate inflammatory changes in the endometrium, thereby reducing inflammation-induced bleeding. Inflammation may lead to vasodilation and exudation in the endometrial vessels, increasing the risk of bleeding. Curettage removes inflammatory cells and mediators, thus decreasing bleeding.
3. Stimulation of Uterine Contractions
The procedure may stimulate uterine contractions during curettage, which compresses blood vessels and contributes to hemostasis. Uterine contractions reduce blood flow to the endometrium and promote vasoconstriction, thereby minimizing bleeding.
4. Removal of Abnormal Cells
Curettage eliminates abnormal cells, such as cervical cancer cells, helping to reduce bleeding. These abnormal cells may invade blood vessels and cause hemorrhage. Removing them via curettage lowers the risk of bleeding.
5. Regulation of Endocrine Function
Curettage can help regulate endocrine activity, thereby reducing bleeding. By removing hormone receptors from the endometrial surface, curettage reduces the stimulatory effects of hormones such as estrogen on the endometrium, achieving a blood-loss-reducing effect.
Curettage is an invasive surgical procedure that may cause some damage to the endometrium. Therefore, a thorough assessment of the patient's condition and fertility intentions should be conducted before the procedure, and it should be performed under a physician’s guidance. Additionally, adequate rest and hygiene should be maintained after curettage to prevent infection and recurrent bleeding.