The birth prevalence of common truncus is approximately is 0.5 to 1 in 10 000 births. Common truncus can occur in association with genetic conditions – especially deletion 22q11 – and can be familial.Īmong modifiable risk factors, maternal pregestational diabetes is common and well established. Clinical and epidemiologic notesĪs noted, the clinical presentation in the newborn period might include a combination of cyanosis and heart failure.Ĭommon truncus is included among the conotruncal heart anomalies, together with tetralogy of Fallot, interrupted aortic arch type B, and d-transposition of the great arteries. Newborn screening for critical CHD via pulse oximetry can detect common truncus if sufficient degree of hypoxia is present at the time of screening. Otherwise, the physiologically high pulmonary vascular resistance at birth will delay this presentation and lead to a degree of cyanosis, usually mild, at the outset. If the valve is severely insufficient, the infant might present early with heart failure, which might be characterized by fast breathing, fast heart rate, poor feeding and excessive sweating. Postnatal. The clinical findings after birth depend on the volume of pulmonary blood flow and the status of the truncal valve (e.g. Prenatal diagnoses should be confirmed postnatally, typically by echocardiography. Common truncus can be missed prenatally if the outflow tract is not fully examined. pulmonary atresia with ventricular septal defect or aortic atresia with ventricular septal defect). Prenatal. Common truncus can be diagnosed prenatally by fetal echocardiography, although in some cases it might be difficult to conclusively distinguish from other conditions (e.g. 4.9h Limb Deficiency: Longitudinal Axial Limb Deficiency – Split Hand and Foot (Q71.6, Q72.7).4.9e Limb Deficiency: Transverse Intercalary (Q71.1, Q72.1, Q72.4).4.9b Congenital Malformations and Deformations of the Musculoskeletal System: Limb Reduction Defects/Limb Deficiencies.4.9a Congenital Malformations and Deformations of the Musculoskeletal System: Talipes Equinovarus (Q66.0).4.8 Congenital Malformations of Genital Organs Hypospadias (Q54.0–Q54.9).4.7 Congenital Malformations of the Digestive System.4.5h Interrupted Aortic Arch (q25.21, Preferred Also Q25.2, Q25.4).4.5g Hypoplastic Left Heart Syndrome (Q23.4).4.5c Transposition of Great Arteries (Q20.3).4.5a Overview Congenital Heart D: Prenatal Diagnosis and Postnatal Confirmation.4.4 Congenital Malformations of the Ear.4.3 Congenital Anomalies of the Nervous System: Microcephaly.4.2 Congenital Malformations of the Nervous System: Neural Tube Defects.4.1 List of Selected External and Internal Congenital Anomalies to Consider for Monitoring.Chapter 4: Diagnosing and Coding Congenital Anomalies.

Interrupted aortic arch type