Hypoplastic right heart syndrome
MONDO:0020291Hypoplastic right-heart syndrome (HRHS) is a rare, cyanotic congenital heart malformation caused by underdevelopment of the right-sided heart structures (tricuspid valve, RV, pulmonary valve, and pulmonary artery) commonly associated with an atrial septal defect, ostium secundum type. Pulmonary blood flow is diminished and right-to-left shunting occurs at the atrial level, leading to dyspnea, fatigue, atrial arrhythmias, right-sided heart failure, hypoxemia, repeated miscarriages that were mostly due to hypoxemia and cyanosis. Two subtypes of HRHS have been characterized: pulmonary atresia-intact ventricular septum and right ventricular hypoplasia.
Also known as: right hypoplastic heart syndrome
142 clinical trials for this condition and its sub-types.
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Broader categories
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Heart drug tested to fight COVID-19 complications
Disease control TerminatedThis study tested a drug called CardiolRx in 90 hospitalized COVID-19 patients who also had heart disease or risk factors like diabetes or high blood pressure. The goal was to see if the drug could lower the chance of death, needing intensive care, or having heart problems. The t…
Phase: PHASE2, PHASE3 • Sponsor: Cardiol Therapeutics Inc. • Aim: Disease control
Last updated Jun 27, 2026 12:23 UTC
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Painkiller showdown: which is safer for the heart?
Knowledge-focused TerminatedThis study looked at how two common pain relievers—celecoxib (a Coxib) and naproxen (an NSAID)—affect blood clotting in people with rheumatoid arthritis who also have heart disease or are at high risk for it. All participants took low-dose aspirin daily. The goal was to see if on…
Phase: PHASE4 • Sponsor: Platelet and Thrombosis Research, LLC • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:32 UTC