16 – Acute Pulmonary Embolism in Pregnancy

16 Acute Pulmonary Embolism in Pregnancy

Louise Simcox and David Simcox

Scenario in a Nutshell

Patient presents with acute pulmonary embolism, with signs progressing to acute massive pulmonary embolism.

Stage 1: Patient presents with shortness of breath to triage – initial assessment and transfer to obstetric HDU.

Stage 2: Discussion of investigations and treatment required – patient not keen for X-rays/CTPA or V/Q because of possible harm to baby.

Stage 3: Patient becomes cardiovascularly unstable with signs of acute massive pulmonary embolism.

Target Learner Groups

Obstetricians, anaesthetists and midwives.

Specific learning opportunities
Knowledge of differential diagnosis of acute shortness of breath in a pregnant woman and planning of appropriate investigations
Knowledge of management of likely pulmonary embolism in pregnancy
Appropriate use of senior involvement of obstetric, anaesthetic and other specialities, particularly when patient deteriorates
Suggested learners (to represent their normal roles) In the room from the start Available when requested
Anaesthetic ST3+
Obstetric ST1
Obstetric ST3+
Midwife Coordinator
Midwife in room
Suggested facilitators
Faculty to play role of patient’s partner

Details for Facilitators

Patient Demographics

Name: Toni

Age: 37

Gestation: 31+1

Booking weight: 92 kg

Parity: P0

Scenario Summary for Facilitators

37-year-old, 31-week pregnant primiparous woman. Attended obstetric triage with shortness of breath. Been under follow-up in Fetal Medicine Unit (FMU) for polyhydramnios.

BMI 39.

Two-day history of shortness of breath, sudden onset, progressively worsening. No chest pain.

Found to be tachypnoeic, tachycardic and hypoxic.

Transferred to obstetric HDU from triage.

Assessed by Obstetric and Anaesthetic Registrar.

Portable CXR unremarkable.

ECG sinus tachycardia and right bundle branch block.

Plan further investigations. Patient not keen for CTPA or V/Q – needs further explanation of the risks involved.

Treatment with unfractionated/low molecular weight heparin.

Patient then deteriorates cardiovascularly with BP falling. Massive acute PE. Need consultant involvement from obstetrics, anaesthetics, medicine/respiratory, radiology and cardiothoracic surgery to aid decision-making for treatment options of acute massive PE in pregnancy.

Set-up Overview for Facilitators

Clinical setting On a trolley in triage
Patient position Sitting upright
Initial monitoring in place Pulse oximeterNIBP cuffCTG

Medical Equipment

For core equipment checklist, see Chapter 9.

Additional equipment specific to scenario
  • Low molecular weight heparin

  • Unfractionated heparin

Arterial line Thrombolysis according to local guidelines
Local guidelines for IV heparin therapy/thrombolysis

Information Given to the Learners

Handover to obstetric ST1 from triage midwife.

Situation: This is Toni, who has just arrived in triage feeling short of breath.

Background: 37-year-old otherwise fit and well. BMI 39. 31 weeks pregnant, first pregnancy.

Attending FMU for follow-up scans for polyhydramnios – conservative management.

She has been feeling short of breath for the last 2 days but had attributed this to late pregnancy and polyhydramnios. Partner reports she struggled to catch her breath walking to the unit.

Assessment: I am just doing her first set of observations. She feels quite short of breath so I came to get you.

Recommendation: Would you mind reviewing her please?

Oct 24, 2020 | Posted by in OBSTETRICS | Comments Off on 16 – Acute Pulmonary Embolism in Pregnancy

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