A 25-year-old female reports to the casualty with a history of amenorrhea for 2 and a half months, abdominal pain, and vaginal bleeding for one day. On examination, vital parameters and other symptoms are normal. On speculum examination, bleeding is found to come from the os. On bimanual examination, the uterus is of 10 weeks size, soft, and the os admits one finger. What is the most likely diagnosis?

1. A

   Threatened abortion

2. B

   Missed abortion

3. C

   Inevitable abortion

4. D

   Incomplete abortion

Appeared in: NORCET 2 - 2021 (shift-1)

Explanation

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• Inevitable abortion is the correct diagnosis because it is defined by vaginal bleeding accompanied by the dilatation of the cervical os.
• In this condition, the process of miscarriage has started and progressed to a point where it cannot be stopped, making the loss of the pregnancy unavoidable.
• The patient's uterus size (10 weeks) is consistent with the period of amenorrhea, and there is no mention of the passage of fetal tissue, which further supports the diagnosis of inevitable abortion over incomplete abortion.

Why Other Options Were Wrong

• Option A: Threatened abortion is incorrect because it is characterized by vaginal bleeding with a closed cervical os. The patient's cervical os is open.
• Option B: Missed abortion is incorrect. It involves fetal demise without the expulsion of uterine contents. The cervical os remains closed, and there is typically minimal to no active bleeding.
• Option D: Incomplete abortion is incorrect because there is no history of the passage of any products of conception. While the cervical os is open, this diagnosis requires that some, but not all, fetal or placental tissue has been expelled from the uterus.

Related Visual

• Visual 1: Diagram: A comparative chart showing the state of the cervix (open vs. closed) and the uterus in threatened, inevitable, incomplete, and complete abortion. This would visually reinforce the key differences.
• Visual 2: Illustration: A simplified drawing of a bimanual examination demonstrating how a clinician assesses cervical dilatation by inserting a finger through the os.

Clinical Relevance

• Nursing practice connection: Use the key finding related to The primary concept tested is the differential diagnosis of spontaneous abortion in early pregnancy based on clinical signs and symptoms to guide bedside assessment, documentation, and the next nursing action.
• A nurse's primary role in the casualty/emergency department is to quickly assess the patient's hemodynamic stability (vitals, amount of bleeding) and pain level.
• It is crucial to establish IV access for potential fluid resuscitation or medication administration and to send blood for CBC, type, and screen, especially for Rh-negative patients who will require Anti-D immunoglobulin.
• The nurse must provide emotional support and clear explanations, as the diagnosis of inevitable abortion means the pregnancy cannot be saved, which can be distressing for the patient.

How to Approach the Question

• First, identify the patient's core clinical presentation: a pregnant woman (10 weeks) with bleeding and pain.
• Recognize that the question asks for a differential diagnosis of spontaneous abortion.
• Focus on the most critical piece of information provided in the physical examination: the status of the cervical os.
• The finding 'os admits one finger' means the cervix is open/dilated.
• Systematically compare this key finding with the definitions of the four types of abortion provided in the options.
• Eliminate options that don't match. Threatened and missed abortions have a closed os. Incomplete abortion involves the passage of tissue. Since the os is open and no tissue has passed, inevitable abortion is the only remaining correct diagnosis.

Concept Tested & Keywords

• Concept Tested: The primary concept tested is the differential diagnosis of spontaneous abortion in early pregnancy based on clinical signs and symptoms.
• Stem keywords: amenorrhea, abdominal pain, vaginal bleeding, speculum examination, bimanual examination, uterus size, cervical os
• Lead-in keywords: most likely diagnosis
• Clinical cues: Amenorrhea for 2.5 months (10 weeks) indicates an early pregnancy.
• Clinical cues: Vaginal bleeding and abdominal pain are common signs of abortion.

Question ID

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