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UNSW Embryology

Normal Development - Neonatal Screening

© Dr Mark Hill (2008)

Acknowledgements

Introduction

There are a number of different neonatal screening (newborn screening) programs in different countries testing for various "common" abnormalities and infections. In addition to the Gutherie test there are also physical tests for hip displasia and a growing number of countries testing of newborn hearing.

Guthrie Card

Heart

Hip Displasia

Hearing

Page Links: Introduction | Some Recent Findings | Guthrie Test | Routine Screened Disorders | Gene Tests | Hip Displasia | Hearing | Heart | Australian Information | NSW Information | American Information | Normal Health Statistics | NCBI Bookshelf | Childhood Disease | References | Glossary

Some Recent Findings

Study Supports Screening Babies for Heart-Rhythm Defect "Routine electrocardiogram (ECG) screening for newborns would save many lives by identifying a potentially deadly genetic condition called long QT syndrome, Italian researchers report."

Kempers MJ, Lanting CI, van Heijst AF, van Trotsenburg AS, Wiedijk BM, de Vijlder JJ, Vulsma T. Neonatal screening for congenital hypothyroidism based on T4, TSH and TBG measurement: Potentials and pitfalls. J Clin Endocrinol Metab. 2006 Jun 20; "The Dutch incidence figures for CH belong to the highest worldwide suggesting that the T4-TSH-TBG screening program is an efficient method to detect CH of variable etiology and severity. Still, a small percentage of children with CH escaped detection via this screening approach. Severe illness and TBG deficiency appear to be responsible for the majority of false-positive referrals."

U.S. Preventive Service Task Force. Screening for developmental dysplasia of the hip: recommendation statement. Am Fam Physician. 2006 Jun 1;73(11):1992-6.

Guthrie Test

Dr Robert Guthrie

A blood screening test developed by Dr Robert Guthrie (1916-95) at University of Buffalo. Test is carried out on neonate (newborn) blood for a variety of knowm genetic disorders.

Blood is collected using a heelprick and spotted onto a test sheet to dry for later testing. Different countries and medical services have different policies on not only what will be tested for but also how long the test card will be kept following analysis. Check your local service for specific information.

 

Links: National Coalition PKU Disorders Tribute to Dr Robert Guthrie | Museum of DisABILITIES The Birth of Newborn Screening |

Routine Screened Disorders

Biotinidase Deficiency (OMIM)

Congenital Adrenal Hyperplasia (CAH) (OMIM)

Congenital Hypothyroidism (CH)

Congenital Toxoplasmosis

Cystic Fibrosis (CF) (OMIM)

Galactosemia (GAL) (OMIM)

Homocystinuria (OMIM)

Maple Syrup Urine Disease (MSUD) (OMIM)

Medium-Chain Acyl-CoA Dehydrogenase Deficiency (MCAD) (OMIM)

Links: History/Overview of Newborn Screening

Gene Tests

A new site developed by NIH "GeneTests" provides medical genetics information resources available at no cost to all interested persons. It contains educational information, a directory of genetic testing laboratories and links to other databases such as OMIM.

Links: GeneTests |

Hip Displasia

U.S. Preventive Service Task Force. Screening for developmental dysplasia of the hip: recommendation statement. Am Fam Physician. 2006 Jun 1;73(11):1992-6.

Links: Musculoskeletal Abnormalities- Congenital Dislocation of the Hip |

Hearing

The incidence of significant permanent hearing loss is approximately 1-3/1000 newborns. Neonatal hearing screening is carried out in the USA, UK and in Australia (2002 NSW Statewide Infant Screening Hearing Program, SWISH) There is a general guide giving a timetable for a number of simple responses that a neonate should make if hearing has developed normally (More? Neonatal Hearing Check List).

State Wide Infant Screening Hearing Program (SWISH) a newborn hearing testing program using an automated auditory response technology (AABR). Program was introduced in NSW Australia in 2002 across 17 area health service coordinators. It is thought that in NSW 86,000 births/year = 86-172 babies potentially born with significant permanent hearing loss.

Automated Auditory Brainstem Response (AABR) uses a stimulus which is delivered through earphones and detected by scalp electrodes. The test takes between 8 to 20 minutes and has a sensitivity 96-99%.

References: Kennedy CR. Neonatal screening for hearing impairment. Arch Dis Child. 2000 Nov;83(5):377-83. | Puig T, Municio A, Meda C. Universal neonatal hearing screening versus selective screening as part of the management of childhood deafness. Cochrane Database Syst Rev. 2005 Apr 18;(2):CD003731.

Links: Development of the Organs of Audition and Equilibrium | Australia NSW Statewide Infant Screening - Hearing Program What is SWISH? | eMJA Newborn hearing screening: decision time for Australia | NSW Health Pamphlet Why does my baby need a hearing check? | eMJA Does every baby get a newborn screening test? | United Kingdom Newborn Hearing Screening Programme | USA National Center for Hearing Assessment and Management | Health Services/Technology Assessment Text Early Identification of Hearing Impairment in Infants and Young Children

Neonatal Hearing Check List

The timing and types of responses listed below reflect only a rough guide for the general population. Abnormalities in neurological, visual or motor skill development can also affect responses.

Birth to 3 months

3 to 6 months

6 to 9 months

9 to 12 months

12 to 18 months

18 to 24 months

(Hearing Check List text based upon NSW Health Pamphlet 2002 - Why does my baby need a hearing check?)

Heart

An electrocardiogram (ECG / EKG) is an electrical recording of the heart.

Study Supports Screening Babies for Heart-Rhythm Defect "Routine electrocardiogram (ECG) screening for newborns would save many lives by identifying a potentially deadly genetic condition called long QT syndrome, Italian researchers report."

Schwartz PJ, Garson A Jr, Paul T, Stramba-Badiale M, Vetter VL, Wren C; European Society of Cardiology. Guidelines for the interpretation of the neonatal electrocardiogram. A task force of the European Society of Cardiology. Eur Heart J. 2002 Sep;23(17):1329-44.

Links: Cardiovascular System Development | Embryonic Heart Rate | Interpretation of electrocardiograms in infants and children. Images Paediatr Cardiol 1999;1:3-13 | Guidelines for the interpretation of the neonatal electrocardiogram | brief history of electrocardiography |

Australian Information

Links: The NSW Newborn Screening Programme | Test to Protect your Baby (PDF) |

American Information

Links: National Newborn Screening and Genetics Resource Center |

History/Overview of Newborn Screening | Medline - Newborn Screening | Medline - Prenatal Testing |

American Academy of Family Physicians The Newborn Examination: Part I. Emergencies and Common Abnormalities Involving the Skin, Head, Neck, Chest, and Respiratory and Cardiovascular Systems | Part II. Emergencies and Common Abnormalities Involving the Abdomen, Pelvis, Extremities, Genitalia, and Spine | Common Issues in the Care of Sick Neonates

American Medical Association "Kids Health" (these are easy to read general public pages American not Australian Information ) | Baby Development by Age | Baby Development by Topic | Childhood Infections | Childhood Immunizations

NCBI Bookshelf

The NCBI Bookshelf contains a number of complete online publications that relate to neonatal development. Of particular interest, is the new resource "Disease Control Priorities in Developing Countries", which talks to important neonatal health issues in these countries.

ealth Services/Technology Assessment Text | Disease Control Priorities in Developing Countries | Basic Neurochemistry |

Health Services/Technology Assessment Text (HSTAT) Bethesda (MD): National Library of Medicine (US), 2003 Oct.

Criteria for Determining Disability in Infants and Children: Low Birth Weight

Effects of Omega-3 Fatty Acids on Child and Maternal Health

Management of Neonatal Hyperbilirubinemia

Criteria for Determining Disability in Infants and Children: Failure to Thrive

Newborn Screening for Sickle Cell Disease and Other Hemoglobinopathies

Early Identification of Hearing Impairment in Infants and Young Children

The Effect of Corticosteroids for Fetal Maturation on Perinatal Outcomes

Improving Treatment for Drug-Exposed Infants

Disease Control Priorities in Developing Countries (2nd ed.) Dean T. Jamison, Joel G. Breman, Anthony R. Measham, George Alleyne, Mariam Claeson, David B. Evans, Prabhat Jha, Anne Mills, Philip Musgrove, editors Washington (DC): IBRD/The World Bank and Oxford University Press; 2006

Newborn Survival

Maternal and Perinatal Conditions

Basic Neurochemistry, Molecular, Cellular, and Medical Aspects (6th ed.) Siegal, George J.; Agranoff, Bernard W.; Albers, R. Wayne; Fisher, Stephen K.; Uhler, Michael D., editors. Philadelphia: Lippincott, Williams & Wilkins; c1999.

etiology of schizophrenia may involve pathological processes during brain development

steroid hormone receptors become evident in target neurons of the brain

Biochemistry of Thyroid Hormone Actions on Brain

"Hypothyroidism increases synaptic density, at least transiently. Interesting parallels with synapse formation are reported for learning behavior in rats; neonatal hypothyroidism impairs learning ability, whereas hyperthyroidism accelerates learning initially, followed by a decline later in life"

Type II glutaric aciduria

"The outlook is almost uniformly fatal, and the few babies who survive have severely compromised development and a cardiomyopathy that usually proves fatal. In rare cases, a patient stays asymptomatic until after the neonatal period, when hepatomegaly, vomiting, metabolic acidosis, hypoglycemia and a proximal myopathy become evident."

brain utilizes ketones in states of ketosis

"Significant utilization of ketone bodies by the brain is, however, normal in the neonatal period. The newborn infant tends to be hypoglycemic but becomes ketotic when it begins to nurse because of the high fat content of the mother's milk. When weaned onto the normal, relatively high-carbohydrate diet, the ketosis and cerebral ketone utilization disappear."

WWW Links

International Society for Neonatal Screening International Society for Neonatal Screening | Fact Sheets |

World Health Organization (WHO) Immunization, Vaccines and Biologicals

Kidshealth Org Newborn Screening Tests

Normal Health Statistics

Australian Birth Statistics | International and Australian Population Statistics | WHO Normal Population Statistics | Fact Sheets | Global Perinatal and Maternal Causes of Death | Population Comparisons between Countries | Developed and developing | Australian neighbours | Australian Trading Partners | USA National Center for Health Statistics - Child

Normal population statistics derived from a number of different sources (as shown on individual pages).

References

Links: Reviews | Articles | Online Textbooks | Search Textbooks | Search PubMed | Glossary

PubMed

Reviews

Kempers MJ, Lanting CI, van Heijst AF, van Trotsenburg AS, Wiedijk BM, de Vijlder JJ, Vulsma T. Neonatal screening for congenital hypothyroidism based on T4, TSH and TBG measurement: Potentials and pitfalls. J Clin Endocrinol Metab. 2006 Jun 20;

U.S. Preventive Service Task Force. Screening for developmental dysplasia of the hip: recommendation statement. Am Fam Physician. 2006 Jun 1;73(11):1992-6.

Schwartz PJ, Garson A Jr, Paul T, Stramba-Badiale M, Vetter VL, Wren C; European Society of Cardiology. Guidelines for the interpretation of the neonatal electrocardiogram. A task force of the European Society of Cardiology. Eur Heart J. 2002 Sep;23(17):1329-44.

Articles

Kennedy CR. Neonatal screening for hearing impairment. Arch Dis Child. 2000 Nov;83(5):377-83.

Puig T, Municio A, Meda C. Universal neonatal hearing screening versus selective screening as part of the management of childhood deafness. Cochrane Database Syst Rev. 2005 Apr 18;(2):CD003731.

Search PubMed

Search July 2006 "neonatal screening" 4,409 reference articles of which 682 were reviews.

Search PubMed: term = neonatal screening | newborn screening | Guthrie Test |

Glossary of Terms

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Quick Links

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