Methaemoglobinaemia is rare but should be considered in cases of cyanosis unresponsive to oxygen therapy. An example of this is given involving the accidental ingestion of Amyl Nitrite.

Cyanosis is a physical finding that can occur at any age but presents the greatest challenge when it occurs in the newborn. The cause is multiple, and it usually represents an ominous sign, especially when it occurs in association with neonatal sepsis, cyanotic congenital heart disease, and airway abnormalities. Cyanosis caused by abnormal forms of hemoglobin can also be life-threatening, and e...

BACKGROUND Supraventricular arrhythmia (SVA) is a frequent clinical complication in adult patients with congenital heart disease (CHD). The aim of this study is prognostic evaluation of congenital heart defect complexity, performed cardiac surgery, initial functional impairment of the heart - NYHA > I, cyanosis, age and sex of the adult patients with CHD, presenting for the first time to an out...

seizure is a rare presentation for acute hemolysis due to g6pd deficiency. we report a previously healthy boy who presented initially with seizure and cyanosis and subsequently acute hemolysis, due to glucose-6-phosphate dehydrogenase deficiency (g6pd) and probably secondary methemoglobinemia, following the ingestion of fava beans.