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Hereditary factor XI deficiency disease
Factor XI deficiency is an autosomal bleeding disorder characterized by reduced levels of factor XI in plasma (less than 15 IU/dL). Bleeding occurs mainly after trauma or surgery. On the basis of the concordance or discordance of F11 antigen and activity, the disorder is classified into the more frequent cross-reactive negative (CRM-) and the rarer CRM positive (CRM+) (summary by Duga and Salomon, 2009). [from OMIM]
Persistent truncus arteriosus
Truncus arteriosus (TA) is a rare congenital cardiovascular anomaly characterized by a single arterial trunk arising from the heart by means of a single semilunar valve (<I>i.e.</I> truncal valve). Pulmonary arteries originate from the common arterial trunk distal to the coronary arteries and proximal to the first brachiocephalic branch of the aortic arch. TA typically overrides a large outlet ventricular septal defect (VSD). The intracardiac anatomy usually displays situs solitus and atrioventricular (AV) concordance. [from ORDO]
PR segment depression
A reduction in voltage of the PR segment below baseline. [from HPO]
PR segment elevation
An increase in voltage of the PR segment above baseline. [from HPO]
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