An unregistered primipara woman with a history of no ANC and immunisation, has delivered a male baby in the labour room. She was tested to be Rh-negative, while her partner was Rh-positive. What action will you take as a midwife?

Appeared in: UP NHM CHO 7 Sept 2022(shift-1st)

Explanation

The standard postpartum prophylactic dose of anti-D immunoglobulin for an Rh-negative mother after a full-term delivery is 300 mcg.
This dose is effective in neutralizing up to 30 mL of fetal whole blood that may have entered the maternal circulation during delivery.
Administration must occur within 72 hours of delivery to be effective in preventing maternal sensitization to the Rh(D) antigen.
Even if the baby's blood type is unknown, it is standard practice to administer the immunoglobulin as a precaution, as it is harmless to the mother but failing to give it when needed can have severe consequences for future pregnancies.

Option B: A dose of 150 mcg is insufficient for postpartum prophylaxis after a full-term delivery and may not prevent maternal sensitization.
Option C: Withholding anti-D immunoglobulin is dangerous as it allows the mother's immune system to become sensitized to the Rh antigen, which can lead to Hemolytic Disease of the Fetus and Newborn (HDFN) in future pregnancies.
Option D: A 50 mcg dose is too low for postpartum prophylaxis following a full-term delivery.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Postpartum prophylaxis for Rh incompatibility as background academic context rather than a clinical decision trigger.
The primary goal of administering anti-D immunoglobulin is to prevent Hemolytic Disease of the Fetus and Newborn (HDFN) in subsequent pregnancies, a condition that can cause severe fetal anemia, heart failure, and death.
As a midwife or nurse, it is a critical patient safety responsibility to identify all Rh-negative mothers and ensure they receive anti-D immunoglobulin at the correct times (antenatally at 28 weeks and postpartum within 72 hours if the baby is Rh-positive).
What if? If the baby's cord blood was immediately tested and confirmed to be Rh-negative, the mother would not require the postpartum dose of anti-D immunoglobulin because there is no risk of sensitization.

How to Approach the Question

First, identify the key clinical data from the scenario: The mother is Rh-negative, the father is Rh-positive, and she has just delivered a baby.
Recognize the core clinical problem: This is a classic situation for potential Rh incompatibility, which can lead to maternal sensitization.
Recall the standard nursing/midwifery intervention for preventing Rh sensitization postpartum.
This involves administering anti-D immunoglobulin (RhoGAM). Remember the standard dose and timing for a full-term delivery.
The standard protocol is 300 mcg administered intramuscularly within 72 hours of birth.
Compare this protocol to the given options and select the one that matches.

Concept Tested & Keywords

Concept Tested: Postpartum prophylaxis for Rh incompatibility
Stem keywords: Rh-negative, primipara, Rh-positive partner, postpartum, anti D-gamma globulin
Lead-in keywords: What action will you take
Clinical cues: Rh-negative mother and Rh-positive partner: This combination creates the risk for an Rh-positive fetus and subsequent Rh incompatibility.
Clinical cues: Primipara: This is the first delivery, meaning it's the primary opportunity for sensitization to occur if prophylaxis is not given.

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E6 Obstetrics Williams pp. 48-68, 1-9

Practise the full UP NHM CHO 7 Sept 2022(shift-1st)

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