What are cardiac lesions that may present for the first time during pregnancy due to increased demands on the heart?

During pregnancy, the body undergoes significant physiological changes, including increased blood volume and cardiac output. These changes can lead to the unmasking or worsening of pre-existing heart conditions. Valvular lesions are particularly implicated in this context; during pregnancy, the demands on the heart can exacerbate valvular heart disease.

Women with prior asymptomatic valvular conditions may experience symptoms for the first time during pregnancy due to the increased workload on the heart. For example, conditions such as aortic stenosis or mitral valve prolapse can become symptomatic as blood flow increases and the heart's workload intensifies.

Valvular lesions often lead to complications such as heart failure, arrhythmias, or pulmonary edema if not monitored and managed appropriately during pregnancy. Thus, recognizing and understanding how pregnancy impacts valvular conditions is crucial for effective maternal care.