What is the process of lochia color change?

Nov 14, 2024 Source: Cainiu Health

Dr. Zhang Lu

Introduction

Under normal circumstances, the color change process of lochia typically progresses through three stages: bloody lochia, serous lochia, and white lochia. Individual variations may exist in the specific changes of lochia for postpartum women. If the lochia develops a foul odor, the amount of bleeding suddenly increases, or if it is accompanied by symptoms such as fever or abdominal pain, it may indicate an abnormal condition such as infection, and prompt medical attention is required.

In general, the process of lochia color change typically occurs in three stages: bloody lochia, serous lochia, and white lochia.

1. Bloody Lochia: Bloody lochia appears during the first 3 to 4 days postpartum. It is bright red in color and heavy in volume, sometimes containing small blood clots. Its main components are blood and a large amount of necrotic decidual tissue. This occurs because during childbirth, blood vessels in the uterine wall at the site of placental attachment rupture, causing blood and uterine decidua to be expelled from the body.

2. Serous Lochia: Serous lochia generally appears on the 4th day postpartum and typically lasts for about 10 days. It appears light red in color due to a decrease in blood content and an increase in serous fluid. Its main components include necrotic decidual tissue, uterine cavity exudate, cervical mucus, and a small number of red and white blood cells. At this stage, the lochia appears diluted, with a lighter color and thinner consistency.

3. White Lochia: White lochia appears after the 10th day postpartum and may last for approximately 3 weeks. It is pale white in color and thick in consistency. Its primary components are large numbers of white blood cells, necrotic decidual tissue, epithelial cells, and bacteria. At this point, the blood component in the lochia has significantly decreased, and it mainly contains white blood cells and degenerated decidual tissue, appearing white or pale yellow.

Individual variations may exist in the specific changes of postpartum lochia. If the lochia develops a foul odor, experiences a sudden increase in volume, or is accompanied by symptoms such as fever or abdominal pain, it may indicate an abnormal condition such as infection, and prompt medical attention is necessary.

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What causes prolonged postpartum lochia?

In general, prolonged lochia after childbirth refers to an extended duration of vaginal discharge of blood, necrotic decidua, and other tissues following delivery, beyond the normal physiological recovery period. This phenomenon may be caused by factors such as poor uterine contraction, retained placenta, poor healing of the uterine incision, incomplete uterine involution, or endometritis.

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What are the differences between lochia and menstruation?

In general, the main differences between lochia and menstruation include differences in nature, bleeding origin, color, bleeding duration, and time period. If any discomfort occurs, it is recommended to seek medical attention at a正规 hospital promptly. Lochia and menstruation have certain distinctions; women should pay attention to the discharge of lochia after childbirth, and seek medical examination and treatment promptly if any abnormalities occur.

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How to Determine if Lochia Has Been Completely Expelled

In general, you can determine whether lochia has been completely discharged by observing changes in its amount, color, consistency, abdominal condition, and vaginal discharge. If you experience any physical discomfort, it is recommended to visit a hospital for examination. In daily life, it is important to maintain proper local hygiene after childbirth to prevent infection.

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What does it mean if lochia hasn't stopped after one month postpartum?

Lochia has not ceased by one month postpartum, which may be caused by poor uterine involution, retained tissue, puerperal infection, endometritis, or myometritis. This can be improved through rest and recovery, medication, or curettage if necessary. If there is heavy lochia, foul odor, or accompanied by abdominal pain and fever, prompt medical attention is required. This condition is associated with postpartum uterine atony.