Syncope in a Child with Pulmonary Hypertension and Positive Gene Tests for Hereditary Hemorrhagic Telangiectasia and Long QT Syndrome.

We present a 10 year old boy with syncope who was found to have long-QT syndrome and severe pulmonary hypertension (PH) both in the absence of a secondary cause, to our knowledge this is the first report with this unusual coexistence. His genetic tests were positive for hereditary hemorrhagic telangiectasia and long QT syndrome (LQTS) without any family history of PH or LQTS. We demonstrated that digital subtraction pulmonary angiography was more useful compared to CT angiogram to demonstrate pulmonary vascular changes which correlated with a no-response to acute vasoreactivity testing during right heart catheterization. He has been stable for the last 2 years on ambrisentan, sildenafil and nadolol without recurrence of symptoms. PMID: 31657683 [PubMed - as supplied by publisher]
Source: Cardiovascular and Hematological Agents in Medicinal Chemistry - Category: Cardiology Tags: Cardiovasc Hematol Agents Med Chem Source Type: research