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EMQ

EMQ — Extended Matching Question · Review

Question 241

Delivery suite → Haemorrhage

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Destination eBook
Type EEMQ
UUID c902a2d2-70db-424c-bd5d-b1eac7582934

Classification

Speciality
Obstetrics and Gynaecology
Group
Clinical
Title
Delivery suite
Topic
Haemorrhage
Subtopic 1
Antepartum haemorrhage
Subtopic 2
Major haemorrhage
Subtopic 3
Investigation
Question Type
EMQ

Question

EEMQ
Question Header
Select the single most appropriate initial laboratory investigation strategy.
Question Stem
A 33-year-old G2P1 at 36+3 weeks arrives by ambulance with continuing heavy APH. Approximately 700 mL has been observed before arrival, but the uterus is tense and the clinical team suspects additional concealed loss. She is pale, pulse 128/min and blood pressure 96/60 mmHg. Two large-bore intravenous cannulae are inserted and resuscitation begins. The fetal heart rate is abnormal. The team must send the initial blood investigations without delaying resuscitation or definitive management.

Answer Bank

A Full blood count alone, with further tests only if haemoglobin is below 100 g/L
B Full blood count and group-and-save only
C Coagulation screen alone because coagulopathy is the principal concern
D Urea and electrolytes and liver function tests only
E Wait for repeat observations before requesting blood
F Full blood count, coagulation screen, crossmatch four units of blood, and urea and electrolytes and liver function tests
G Kleihauer test alone
H No laboratory investigations until the exact volume of blood loss has been measured

Correct Answer

F. Full blood count, coagulation screen, crossmatch four units of blood, and urea and electrolytes and liver function tests

Explanation

Major or massive APH requires comprehensive initial laboratory assessment alongside active resuscitation. This includes full blood count and coagulation testing, crossmatching four units of blood, and biochemical assessment including urea and electrolytes and liver function tests. The initial haemoglobin may underestimate acute blood loss, so investigation and preparation for transfusion should be determined by the clinical severity rather than a reassuring haemoglobin result.

Option Validity

A) Full blood count alone is inadequate in major haemorrhage and an initially preserved haemoglobin may be misleading.

B) Group-and-save is insufficient when major haemorrhage creates a foreseeable requirement for urgent transfusion.

C) Coagulation assessment is important but must be accompanied by broader haematological and biochemical investigation and blood preparation.

D) Biochemistry alone does not address anaemia, coagulopathy or transfusion preparation.

E) Investigations and blood preparation should proceed immediately alongside resuscitation.

G) Assessment of fetomaternal haemorrhage does not replace the investigations required for maternal major haemorrhage.

H) Treatment and investigation must not await precise measurement of blood loss.

Further Reading

RCOG Green-top Guideline No. 63. Antepartum Haemorrhage. Royal College of Obstetricians and Gynaecologists; 2011.

Source & metrics

Authored Difficulty
4.00
Evaluation Score
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Destination
eBook
Source
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Source Section
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Updated
2026-10-06 01:57:35
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