A 10-year-old girl with primary pulmonary hypertension is receiving nitric oxide therapy for its vasodilatation properties.She presents with a deficiency in oxygen-carrying capacity with the hemoglobin iron molecule in the ferric acid state and a methemoglobin level of 10%.She probably has a condition known as:

Question

Quizplus · Accepted Answer

The presence of methemoglobin (in which the iron in hemoglobin is in the ferric state and is unable to carry oxygen) suggests methemoglobinemia. Primary pulmonary hypertension may cause hypoxia, leading to the use of nitric oxide therapy for vasodilation. Sickle cell disease is a hemoglobinopathy with a different mechanism of pathology. Anemia refers to a low hemoglobin concentration without any specific indication of methemoglobinemia. Hypoxic shock and restrictive lung disease are not consistent with the presented information.

A 10-Year-Old Girl with Primary Pulmonary Hypertension Is Receiving Nitric