Newborn Screening Act of 2004 (RA 9288) Flashcards
(111 cards)
It is a non-diagnostic test because a series of follow-up procedures should be made to verify abnormal results.
Newborn Screening Procedure
What samples are collected during newborn screening
Urine an blood
What are the laboratory tests performed during newborn screening
Ferric chloride
Sodium nitroprusside clinitest
Guthrie test
It is a non-painful procedure in which a baby is screened for any incidence of hearing loss not later than 1 month of age
Hearing Screening
It is usually done using oximetery on the baby’s hands and feet
Screening for critical congenital heart defects
What is the standard absorbance of spectrophotometer
2 wavelengths 605nm and 850nm
The foreskin is surgically removed revealing the tip of the penis
Circumcision
A monitor is placed on the newborn’s forehead for a few seconds; What test is this and what is this for
Guthrie test; Comprehensive screening test for Jaundice
It is a yellowish discoloration of skin mucous membrane and sclera
Jaundice
It is a semi quantitative bacterial inhibition assay; can also be applied in other disorders such as aminoacidopathies
Guthrie Test
What is the rationale of Newborn Screening
It enables early detection and management of certain metabolic disorders
It is associated with abnormal heme synthesis, hemoglobin variants, and globin synthesis
Hemoglobinopathies
QUALITATIVE defects in hemoglobin molecules that may result in group of disorders called hemoglobinopathies. It is associated with abnormal heme synthesis, hemoglobin variants, and globin synthesis.
Hemoglobinopathy
Characterized by a defect in one or more enzymes involved in heme synthesis resulting to accumulation of porphyrin in the bone marrow or the liver
Porphyrias
They are chemical intermediates (end products) in the synthesis of hemoglobin, myoglobin, and other respiratory pigments
Porphyrin
Characterized by presence of Hemoglobin S in a homozygous state
Sickle Cell Disease
Characterized by presence of Hemoglobin S in a homozygous state
Sickle Cell Trait
o It is a clinical condition in which erythrocytes become rigid and trapped in capillaries
Sickle Cell Anemia
In hemoglobin S what amino acid are substituted and in what position
Glutamic acid with valine on the 6th position of the beta chain
What disease are sickle ell anemia patients immune to
Malaria (Plasmodium falciparum)
In hemoglobin C what amino acid are substituted and in what position
lysine for glutamic acid on the 6th position of the beta chain
What is the most common mixed hemoglobinopathy
Hemoglobin SC Disease
It is a double heterozygous condition in which an abnormal S gene from one parent is inherited and an abnormal C gene from another parent is also inherited.
Hemoglobin SC Disease
In hemoglobin D disease, what amino acid is substituted and in what position
Glycine for glutamic acid in the 121st position of the beta chain