What is the expected color and composition of lochia serosa?

Appeared in: RRB Nsg. Superintendent-2026 (Shift -3rd)

Explanation

Lochia serosa is the second stage of postpartum vaginal discharge, following lochia rubra.
It typically occurs from approximately day 5 to day 9 after delivery.
The discharge is pinkish or brownish because it is composed of old blood, serous fluid (serum), wound exudate from the placental site, and leukocytes.
This stage represents a normal progression of uterine healing as the amount of fresh bleeding decreases.

Option A: This describes lochia alba, the final stage of postpartum discharge.
Option B: This describes lochia rubra, the first stage of postpartum discharge.
Option D: Lochia is never a clear, acellular fluid.

Visual 1: Chart: A visual timeline illustrating the progression of lochia from rubra (red) to serosa (pink/brown) to alba (white/yellow) over the first few weeks postpartum, with corresponding compositions.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Postpartum assessment and stages of lochia as background academic context rather than a clinical decision trigger.
Assessing the color, amount, and odor of lochia is a critical nursing responsibility during postpartum care to monitor uterine involution and detect complications.
An offensive or foul odor at any stage is a sign of infection (puerperal sepsis) and must be reported.
The persistence of lochia rubra beyond the first week, or a return to red bleeding after it has become serosa, can indicate subinvolution of the uterus or retained placental fragments, which are causes of late postpartum hemorrhage.

How to Approach the Question

First, identify the key term in the question: 'lochia serosa'.
Recall the three sequential stages of postpartum lochia: rubra, serosa, and alba.
Associate each stage with its characteristic color and general timeframe: Rubra is red (first few days), Serosa is pinkish/brownish (middle stage, ~days 5-9), and Alba is whitish/yellowish (final stage, ~day 10+).
Evaluate the options based on this knowledge. Option C correctly describes the pinkish or brownish color and composition of lochia serosa.
Eliminate the other options by identifying which stage they describe (Option A is alba, Option B is rubra) or by recognizing them as incorrect (Option D).

Concept Tested & Keywords

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Practise the full RRB Nsg. Superintendent-2026 (Shift -3rd)

Attempt every question from this paper in a timed mock, then review the full solution for each one.