Heart Defects, Congenital

They arise from abnormal cardiac development. The supplied material links this to disrupted molecular signals and pathways involved in heart formation, including growth and transcription factors, WNT signaling, retinoic acid signaling, and Notch signaling, as well as cilia-related and extracellular matrix-related processes.

The disease reflects altered embryologic cardiac development, leading to structural abnormalities of the heart. The grounding indicates that multiple molecular pathways regulate normal cardiac development and that disruption of these pathways contributes to congenital defects. The literature also frames exercise and stroke volume as co-studied mechanisms, but does not provide a specific mechanistic explanation for them in this grounding.

The supplied grounding does not identify specific epidemiologic risk factors for congenital heart defects. It only indicates that the literature covers epidemiology, without listing particular factors.

Management is described at the level of diagnostic imaging and therapy rather than specific interventions. Advanced cardiovascular imaging such as cardiac magnetic resonance and computed tomography is used to support echocardiography and, in some settings, replace cardiac catheterization for diagnosis and assessment. The grounding also notes therapy and complications as literature themes, but does not specify treatment modalities beyond imaging-based evaluation and general cardiovascular palliative care as a broader concept in cardiovascular disease.