Overview
Double-chambered right ventricle (DCRV) is a congenital heart defect characterized by abnormal partitioning of the right ventricle into two chambers by muscular bands, leading to obstruction and potential hemodynamic compromise 13.Diagnosis
Echocardiography: Essential for initial diagnosis, identifying chamber division and associated defects 13.
Cardiac Catheterization: Confirms hemodynamic findings, including pressure gradients 23.
MRI: Useful for detailed anatomical assessment before catheterization, especially when obstruction is suspected 3.
Electrocardiography/Vectorcardiography: Reveals characteristic patterns indicative of right ventricular hypertrophy 5.Management
Surgical Repair: Transatrial approach is effective for repair, achieving satisfactory outcomes 2.
Conduit Bypass: For complex cases with additional anomalies (e.g., anomalous coronary artery), non-valved conduits can be used 4.
Postoperative Monitoring: Focus on right ventricular function, typically assessed by pressure ratios 2.Special Populations
Pediatrics: Early diagnosis and intervention are crucial; echocardiography remains pivotal 1.
Elderly: Considerations for surgical risk and recovery are essential, though successful repairs are reported 2.Key Recommendations
Utilize echocardiography for initial diagnosis and assessment of DCRV anatomy 13. (Evidence: Strong)
Consider transatrial surgical repair as a standard approach with favorable outcomes 2. (Evidence: Strong)
Employ MRI preoperatively to accurately evaluate obstruction and anatomy when catheterization findings are inconclusive 3. (Evidence: Moderate)References
1 Hubail ZJ, Ramaciotti C. Spatial relationship between the ventricular septal defect and the anomalous muscle bundle in a double-chambered right ventricle. Congenital heart disease 2007. link
2 McGrath LB, Joyce DH. Transatrial repair of double-chambered right ventricle. Journal of cardiac surgery 1989. link
3 Nishimura T, Fujii T. Double-chambered right ventricle demonstrated by magnetic resonance imaging before cardiac catheterization--case report. Angiology 1988. link
4 Kafka H, Burggraf GW, Pym J, Charrette EJ. A new surgical technique to correct double chambered right ventricle associated with anomalous left anterior descending coronary artery. The Canadian journal of cardiology 1985. link
5 Folger GM. Electro-vectorcardiographic features of double-chambered right ventricle. European heart journal 1984. link
6 Shaub M, Wilson R, Young G. High frequency oscillations of the pulmonary valve leaflet in double-chamber right ventricle. Journal of clinical ultrasound : JCU 1976. link