This is especially the case if you had an existing cardiovascular condition before becoming pregnant. The most significant changes to the circulatory system begin in the first trimester of pregnancy and peak during the second.
The main changes in this period are:
- The increase of cardiac output by 30-50%; a decrease in blood pressure by 10-15mm/Hg, which usually resolves by the third trimester
- Increase in heart rate by 10-20 beats per minute.
Problems typically encountered in the third trimester relate to a decrease in venous return, which can lead to hypotension. Cardiac output can also be affected during this time by the pressure of the uterus on the abdominal aorta, the largest artery in the abdominal cavity.
Some of the normal symptoms experienced during pregnancy are related to these cardiovascular changes, including:
- Shortness of breath on exertion (dyspnea)
- Oedema in the ankles
Symptoms that are more unusual and call for a more detailed evaluation include chest pain (angina), shortness of breath without exertion or during the night, and sustained arrhythmia.
Heart disease can be safely managed during pregnancy with the help of an experienced and qualified specialist. If you have an existing condition and you are considering getting pregnant, it is advised that you come in for a consultation.
What to do next
If you are already pregnant and would like to discuss any cardiovascular-related symptoms or any symptoms at all that have arisen since conception, please give us a call and make an appointment to meet with one of our specialists.
We are here to help with any concerns and to ensure that you have a safe and healthy pregnancy.
Yes, all women will experience significant cardiovascular changes in the first trimester of their pregnancy. These changes will be more noticeable if you had an existing condition prior to becoming pregnant.
Shortness of breath (dyspnea), orthopnea, swollen ankles (oedema) and palpitations are all common signs that women notice during pregnancy; they are all related to how the cardiovascular output is affected.
An experienced specialist can evaluate you prior to becoming pregnant and advise you on the safest way to proceed to support optimal health for you and your baby. Make an appointment to speak to one of our specialists who can support you through the process.