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Complete Health Indicator Report of Birth Defects: Prevalence of Tetralogy of Fallot per 10,000 Live Births

Definition

Tetralogy of Fallot is a problem with the heart's structure that is present at birth. This defect changes the normal flow of blood through the heart. Tetralogy of Fallot is a combination of four defects: -A hole in the wall between the ventricles (two lower chambers of the heart), called a ventricular septal defect. -Narrowing of the tube that carries blood from the heart to the lungs, called pulmonary stenosis. -The aorta (the tube that carries oxygen-rich blood to the body) grows from both ventricles, rather than from the left ventricle only. -A thickened muscular wall of the right ventricle, called right ventricular hypertrophy. Prevalence of tetralogy of Fallot is the number of live-born infants with tetralogy of Fallot per 10,000 live born infants. (Live-born infants are the infants born with any evidence of life).

Numerator

Number of live-born infants with tetralogy of Fallot.

Denominator

Number of live-born infants.

Data Interpretation Issues

In January 2000, birth defects became a reportable condition in New Mexico; however, birth defects were collected prior to this date. The first year of consistent data is 1998. However, data for tetralogy of Fallot were not collected consistently until 2004. For tetralogy of Fallot data, the most recent year of analyzed data is 2011. Data are collected on live births occurring in-state to NM residents. Therefore, live births that occur in NM among out-of-state residents are excluded. Case finding/identification occurs through review of birth and death certificates, hospital discharge diagnoses, records from pediatric specialists and prenatal diagnostic providers. Birth defect cases are ascertained up to age 4; however, the majority of diagnoses are made by age 1.

Why Is This Important?

Birth defects pose a significant public health problem. One in 33 babies is born with a structural birth defect in the United States. Birth defects are a leading cause of infant mortality and responsible for considerable morbidity with enormous economic and social costs. Infants and young children with tetralogy of Fallot often have blue- or purplish-looking skin color, called cyanosis, because of oxygen-poor blood. At birth, infants might not have blue-looking skin, but later might develop sudden episodes (called "Tet spells") of bluish skin during crying or feeding. Many babies with this condition will have to have surgery to correct it. Babies who have surgery usually do well. Unfortunately, without surgery, death usually occurs before the person reaches 20 years of age. Following are just a few of the issues that people with tetralogy of Fallot might have to face. -Children with this condition might need to limit their physical activity, especially in competitive sports. -People with tetralogy of Fallot are at increased risk for developing endocarditis (an infection of the inner layer of the heart). -People with repaired tetralogy of Fallot have a higher risk of heart rhythm disturbances, called arrhythmias. Sometimes these can cause dizziness or fainting. Medicine or medical procedures might be needed to address these issues. -People with tetralogy of Fallot can have delayed growth and development. -People with tetralogy of Fallot can have seizures during periods when insufficient oxygen is being carried in the blood.

Other Objectives

CDC Environmental Public Health Tracking, Nationally Consistent Data and Measures (EPHT NCDM)

How Do We Compare With the U.S.?

The national prevalence of tetralogy of Fallot among births from 2004-2006 is 3.97 per 10,000 births.These data come from 14 birth defects surveillance programs: Arkansas, Arizona, California [8-county Central Valley], Colorado, Georgia [5-county metropolitan Atlanta], Illinois, Iowa, Kentucky, Massachusetts, North Carolina, Oklahoma, Puerto Rico, Texas, and Utah. For more information, please see: http://www.cdc.gov/ncbddd/features/birthdefects-keyfindings.html


Graphical Data Views

Tetralogy of Fallot - Five Year Average Prevalence per 10,000 Live Births 2006-2011

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NM vs. U.S.YearPrevalence per 10,000 Live BirthsLower LimitUpper Limit
Record Count: 2
New Mexico2006-201021.22.7
New Mexico2007-20112.31.53.1

Data Notes

New Mexico live-born infants with tetralogy of Fallot, 2006-2011. The following International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) codes were used to identify tetralogy of Fallot: 745.11, 745.2. In 1987, CDC put forth a set of 6 digit codes (the sixth digit provides greater specificity for diagnosis) based on the British Pediatric Association Classification of Diseases and the ICD-9-CM. If CDC/BPA codes are present, the following were used to identify tetralogy of Fallot: 745.200, 745.210, 745.180, 746.00+745.400, 747.310.


Prevalence of Tetralogy of Fallot by County 2006-2011

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confidence limits

CountyPrevalence per 10,000 Live BirthsLower LimitUpper LimitNoteNumer- atorDenom- inator
Record Count: 35
Bernalillo3.11.64.61754,812
Catron000Rate is statistically unstable.0117
Chaves1.604.9Rate is statistically unstable.16,092
Cibola000Rate is statistically unstable.02,551
Colfax000Rate is statistically unstable.0832
Curry409.6Rate is statistically unstable.24,978
De Baca000Rate is statistically unstable.0131
Dona Ana1.303Rate is statistically unstable.215,759
Eddy000Rate is statistically unstable.04,519
Grant4.6013.7Rate is statistically unstable.12,165
Guadalupe000Rate is statistically unstable.0260
Harding000Rate is statistically unstable.027
Hidalgo000Rate is statistically unstable.0355
Lea1.604.6Rate is statistically unstable.16,428
Lincoln000Rate is statistically unstable.01,281
Los Alamos000Rate is statistically unstable.01,041
Luna000Rate is statistically unstable.02,319
McKinley1.303.9Rate is statistically unstable.17,637
Mora000Rate is statistically unstable.0266
Otero3.909.3Rate is statistically unstable.25,129
Quay000Rate is statistically unstable.0610
Rio Arriba2.607.8Rate is statistically unstable.13,806
Roosevelt000Rate is statistically unstable.01,748
Sandoval1.103.2Rate is statistically unstable.19,366
San Juan1.804.2Rate is statistically unstable.211,435
San Miguel000Rate is statistically unstable.02,095
Santa Fe103.1Rate is statistically unstable.19,552
Sierra000Rate is statistically unstable.0591
Socorro000Rate is statistically unstable.01,512
Taos4.7014Rate is statistically unstable.12,110
Torrance000Rate is statistically unstable.01,060
Union000Rate is statistically unstable.0181
Valencia5.1010.935,871
Missing/unknown000Rate is statistically unstable.02
NM2.21.42.936166,638

Data Notes

New Mexico live-born infants with tetralogy of Fallot, 2006-2011. The following International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) codes were used to identify tetralogy of Fallot: 745.11, 745.2. In 1987, CDC put forth a set of 6 digit codes (the sixth digit provides greater specificity for diagnosis) based on the British Pediatric Association Classification of Diseases and the ICD-9-CM. If CDC/BPA codes are present, the following were used to identify tetralogy of Fallot: 745.200, 745.210, 745.180, 746.00+745.400, 747.310.


Tetralogy of Fallot: Five Year Counts - Moving 5-Year Totals 2006-2011

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YearCase Counts
Record Count: 2
2006-201028
2007-201132

Data Notes

New Mexico live-born infants with tetralogy of Fallot, 2006-2011. The following International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) codes were used to identify tetralogy of Fallot: 745.11, 745.2. In 1987, CDC put forth a set of 6 digit codes (the sixth digit provides greater specificity for diagnosis) based on the British Pediatric Association Classification of Diseases and the ICD-9-CM. If CDC/BPA codes are present, the following were used to identify tetralogy of Fallot: 745.200, 745.210, 745.180, 746.00+745.400, 747.310.

More Resources and Links

Evidence-based community health improvement ideas and interventions may be found at the following sites:

Additional indicator data by state and county may be found on these Websites:

Medical literature can be queried at the PubMed website.

For an on-line medical dictionary, click on this Dictionary link.

Page Content Updated On 07/31/2014, Published on 07/31/2014
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Content updated: Tue, 12 Aug 2014 11:49:04 MDT