You are here : health.am > Pregnancy Health Center > Cardiovascular Disorders Cardiovascular Disorders Cardiovascular Disorders • Medical Disorders During Pregnancy • • Cardiovascular Disorders • Jun 07 06 Normal pregnancy is accompanied by changes in blood volume, heart rate, blood pressure, cardiac output, and ventilation. Cardiac output begins to rise during the first trimester, peaks at an approximate 40% increase by 20 to… Page 1 of 1 pages << Back to main