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A Porcine Model of Acute Autologous Pulmonary Embolism
Published on: September 6, 2024
Severe acute pulmonary embolism in pregnancy
1Royal Surrey NHS Foundation Trust, Guildford, Surrey, UK.
Insights
Pulmonary embolism (PE) in pregnancy requires prompt diagnosis and risk stratification. Management includes anticoagulation with low-molecular-weight heparin (LMWH) or unfractionated heparin (UFH), with thrombolysis reserved for severe cases.
Area of Science:
- Obstetrics and Gynecology
- Cardiology
- Pulmonology
Background:
- Pulmonary embolism (PE) poses significant risks during pregnancy and postpartum.
- Severe PE can lead to hemodynamic instability and cardiac arrest.
- Risk stratification is crucial for managing acute PE.
Purpose of the Study:
- To outline diagnostic and management strategies for intermediate- and high-risk PE in pregnancy.
- To emphasize the applicability of existing PE risk criteria in pregnant patients.
- To discuss safe and effective treatment options for PE during pregnancy and breastfeeding.
Main Methods:
- Focuses on risk stratification criteria for intermediate- and high-risk PE.
- Highlights the importance of timely diagnostic imaging, irrespective of pregnancy.
- Reviews the use of anticoagulants (LMWH, UFH) and thrombolysis in obstetric patients.
Main Results:
- High-risk PE criteria are applicable in pregnancy.
- Diagnostic imaging should not be delayed.
- LMWH and UFH are safe during pregnancy and breastfeeding.
- Systemic thrombolysis is an option for severe, high-risk PE with shock, but carries bleeding risks.
Conclusions:
- Pregnancy and the puerperium are risk factors for PE.
- Avoid premature diagnostic closure; consider alternative diagnoses.
- Appropriate risk stratification and timely intervention are key for managing PE in pregnant patients.
Abstract:
Pulmonary embolism (PE) is a significant cause of morbidity and mortality in pregnancy and the puerperium. In severe cases, it causes haemodynamic instability and can lead to cardiac arrest due to obstructive shock. Patients with acute PE can be risk stratified to guide their monitoring and treatment; this article focuses on intermediate- and high-risk PE. The criteria for defining high-risk PE can be used unmodified in pregnancy. Diagnostic imaging should not be delayed due to pregnancy. Low-molecular-weight heparin (LMWH) and unfractionated heparin (UFH) can be used during pregnancy and breastfeeding, and systemic thrombolysis can be used in obstetric patients, but there are significant bleeding risks and it should be reserved for high-risk PE with hypotension and shock. Although pregnancy and the puerperium are risk factors for PE, it is important to avoid early diagnostic closure, and to consider other causes for the patient's presentation.
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