Related Experiment Video
Updated: Jun 25, 2025

Fetal Mouse Cardiovascular Imaging Using a High-frequency Ultrasound 30/45MHZ System
Published on: May 5, 2018
Cardiac physiology and pathophysiology in pregnancy
Shekoofeh Saboktakin Rizi1, Evan Wiens2, Jennifer Hunt3
1Section of Cardiology, Department of Internal Medicine, University of Manitoba, Winnipeg, MB, Canada.
Insights
Cardiovascular disease is a major cause of maternal death during pregnancy. Understanding pregnancy
Area of Science:
- Cardiovascular Medicine
- Obstetrics
- Maternal Health
Background:
- Cardiovascular disease (CVD) is the leading indirect cause of maternal morbidity and mortality.
- Nearly one-third of maternal deaths during pregnancy are attributed to CVD.
- The incidence of CVD in pregnancy is increasing.
Purpose of the Study:
- To review the physiologic adaptations during pregnancy.
- To outline the pathologic implications of these adaptations for common cardiovascular conditions.
- To inform care providers on managing pregnant patients with CVD.
Main Methods:
- Literature review of physiologic changes in pregnancy.
- Analysis of how these changes impact pre-existing and new cardiovascular conditions.
- Synthesis of information for clinical application.
Main Results:
- Pregnancy involves significant cardiovascular adaptations like increased cardiac output and plasma volume.
- These changes can unmask, worsen, or cause new cardiac issues.
- Specific common cardiovascular conditions are discussed in the context of pregnancy.
Conclusions:
- Understanding pregnancy's physiologic changes is crucial for managing cardiovascular disease.
- Early recognition and management of CVD in pregnancy can reduce maternal morbidity and mortality.
- This review provides essential insights for healthcare providers.
Abstract:
Cardiovascular disease is the leading indirect cause of maternal morbidity and mortality, accounting for nearly one third of maternal deaths during pregnancy. The burden of cardiovascular disease in pregnancy is increasing, as are the incidence of maternal morbidity and mortality. Normal physiologic adaptations to pregnancy, including increased cardiac output and plasma volume, may unmask cardiac conditions, exacerbate previously existing conditions, or create de novo complications. It is important for care providers to understand the normal physiologic changes of pregnancy and how they may impact the care of patients with cardiovascular disease. This review outlines the physiologic adaptions during pregnancy and their pathologic implications for some of the more common cardiovascular conditions in pregnancy.
Related Concept Videos
Pathophysiology of Cardiac Performance
Electrophysiology of Normal Cardiac Rhythm
Pathophysiology of Heart Failure
Physiology of the Heart: The Cardiac Cycle
Diastole: The Relaxation Phase
During diastole, all four heart chambers relax. The atrioventricular (AV) valves open, and the semilunar valves close. This phase sees the lowest chamber pressures, promoting ventricular filling. Venous blood enters the heart through the...
Pathophysiology of Diabetes
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility,...
Imbalances in Cardiac Output
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send...

