This document provides an overview of congenital hypothyroidism. It is the most common neonatal metabolic disorder and preventable cause of mental retardation. If left untreated it can result in cretinism. The incidence is higher in females, twins, and those with Down syndrome. Clinical manifestations include decreased activity, feeding issues, and delayed bone formation. Treatment involves oral levothyroxine to normalize thyroid levels.
Congenital hypothyroidism is quite common in Indians and is the most common reversible congenital cause of mental retardation.
Early identification and intervention is important as Thyroid dependent brain development is complete by 3 years of age.
Universal screening is ideal as most cases are sporadic.
Positive cases on screening by filter paper test should be confirmed by serum levels estimation.
Serum Thyroid hormone levels are of primary importance in diagnosing and managing this condition, other investigations are ancillary.
Age based reference values must be followed in interpreting the results.
Timely monitoring (serum hormone levels, compliance, growth & development) and adequate counseling of care givers are key in managing this condition.
Congenital hypothyroidism is quite common in Indians and is the most common reversible congenital cause of mental retardation.
Early identification and intervention is important as Thyroid dependent brain development is complete by 3 years of age.
Universal screening is ideal as most cases are sporadic.
Positive cases on screening by filter paper test should be confirmed by serum levels estimation.
Serum Thyroid hormone levels are of primary importance in diagnosing and managing this condition, other investigations are ancillary.
Age based reference values must be followed in interpreting the results.
Timely monitoring (serum hormone levels, compliance, growth & development) and adequate counseling of care givers are key in managing this condition.
This presentation was done by Dr. Julius P. Kessy,MD. An intern Doctor at Dodoma Regional Referral Hospital (DRRH) during pediatrics unit clinical meeting and supervised by Dr. Christina K. Galabawa,MD,Mmed2, Pediatrics and Child Health, University of Dodoma (UDOM) in November, 2017.
This presentation was done by Dr. Julius P. Kessy,MD. An intern Doctor at Dodoma Regional Referral Hospital (DRRH) during pediatrics unit clinical meeting and supervised by Dr. Christina K. Galabawa,MD,Mmed2, Pediatrics and Child Health, University of Dodoma (UDOM) in November, 2017.
Define hyperthyroidism and hypothyroidism
Here you can see all causes by which a hyperthyroidism and hypothyroidism occur in child and also mention and explained the all signs and symptoms and also explained their treatments and preventions
Discusses how maternal thyroid physiology changes in pregnancy, the issues of thyroid disease in pregnancy, how to interpret thyroid test results in the pregnant woman and how to manage common thyroid diseases in pregnancy
Detailed presentation on congenital hypothyroidism including physiology, pathophysiology, newborn screening, management and follow up (including Sri Lankan practice).
The Newer Concepts In Endometriosis Management : Dr Sharda JainLifecare Centre
The Newer Concepts In
Endometriosis Management
ENDOMETRIOSIS IS ENIGMA
DIAGNOSTIC DELEMMA
DEBILITATING DISEASE QOL
PROGRESSIVE DISEASE
RECURRENCE IS BIG PROBLEM
NO FINAL VERDICT ON CAUSE
NO PERMANENT CURE
The exact prevalence of endometriosis is unknown, but estimates 10% in the general female population in India but up to 50% in infertile women
The Newer Concepts forReduced Surgery to preserve fertility in Endometrios...Lifecare Centre
The Newer Concepts forReduced Surgery to preserve fertility in Endometriosis
ENDOMETRIOSIS IS ENIGMA
DIAGNOSTIC DILEMMA
DEBILITATING DISEASE QOL
PROGRESSIVE DISEASE
RECURRENCE IS BIG PROBLEM
NO FINAL VERDICT ON CAUSE
NO PERMANENT CURE
The exact prevalence of endometriosis is unknown, but estimates 10% in the general female population in India but up to 50% in infertile women
Anemia Free India Gynaecologist to focuss on *12gm Haemoglobin at Delivery I...Lifecare Centre
Important Highlights
Prophylactic Iron and Folic Acid Supplementation in all six target age groups.
Intensified year-round Behaviour Change Communication (BCC) Campaign for:(a) improving compliance to IFA and deworming, (b) enhancing appropriate infant and young child feeding practices, (c) encouraging increase in intake of iron-rich food through diet and/or fortified foods (d) ensuring delayed cord clamping .
Testing and treatment of anaemia, using digital methods and point of care treatment, with special focus on pregnant women and school-going adolescents.
Addressing non-nutritional causes of anaemia
in endemic pockets with special focus on malaria, hemoglobinopathies and fluorosis
Strategies for Improving Success Rates in ART PARTLifecare Centre
Strategies for Improving Success Rates in ART
Part - 2
Strategies for Improving Success Rates in ART
Tailoring Controlled Ovarian Stimulation
Strategies for Luteal Phase in ART cycles
Endometrial Receptivity Array
How to optimize success rates in ART? : Dr Sharda JainLifecare Centre
How to optimize success rates in ART? : Dr Sharda Jain
How to improve success rates in ART?
The big debate कार्य में आनंद
Evolution of In-vitro Fertilization (IVF)
Factors Influencing IVF Success Ist Part
Strategies for Improving Success Rates in ART Second Part
Innovations & Breakthroughs in IVF Part Three
OPEN DEBATE
SOCIALEGG FREEZING : Dr Poorva Bhargav and Dr Sharda JainLifecare Centre
SOCIALEGG FREEZING : Dr Poorva Bhargav and Dr Sharda Jain
Introduction
Social egg freezing (oocyte cryopreservation for non-medical reasons) has evolved as a proactive option for women looking to extend their reproductive possibilities past their peak childbearing years
It is the process of saving or protecting eggs, or reproductive tissues so that a person can use them to have biological children in future
Report Back from SGO 2024: What’s the Latest in Cervical Cancer?bkling
Are you curious about what’s new in cervical cancer research or unsure what the findings mean? Join Dr. Emily Ko, a gynecologic oncologist at Penn Medicine, to learn about the latest updates from the Society of Gynecologic Oncology (SGO) 2024 Annual Meeting on Women’s Cancer. Dr. Ko will discuss what the research presented at the conference means for you and answer your questions about the new developments.
Title: Sense of Smell
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
Basavarajeeyam is an important text for ayurvedic physician belonging to andhra pradehs. It is a popular compendium in various parts of our country as well as in andhra pradesh. The content of the text was presented in sanskrit and telugu language (Bilingual). One of the most famous book in ayurvedic pharmaceutics and therapeutics. This book contains 25 chapters called as prakaranas. Many rasaoushadis were explained, pioneer of dhatu druti, nadi pareeksha, mutra pareeksha etc. Belongs to the period of 15-16 century. New diseases like upadamsha, phiranga rogas are explained.
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Ve...kevinkariuki227
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
Lung Cancer: Artificial Intelligence, Synergetics, Complex System Analysis, S...Oleg Kshivets
RESULTS: Overall life span (LS) was 2252.1±1742.5 days and cumulative 5-year survival (5YS) reached 73.2%, 10 years – 64.8%, 20 years – 42.5%. 513 LCP lived more than 5 years (LS=3124.6±1525.6 days), 148 LCP – more than 10 years (LS=5054.4±1504.1 days).199 LCP died because of LC (LS=562.7±374.5 days). 5YS of LCP after bi/lobectomies was significantly superior in comparison with LCP after pneumonectomies (78.1% vs.63.7%, P=0.00001 by log-rank test). AT significantly improved 5YS (66.3% vs. 34.8%) (P=0.00000 by log-rank test) only for LCP with N1-2. Cox modeling displayed that 5YS of LCP significantly depended on: phase transition (PT) early-invasive LC in terms of synergetics, PT N0—N12, cell ratio factors (ratio between cancer cells- CC and blood cells subpopulations), G1-3, histology, glucose, AT, blood cell circuit, prothrombin index, heparin tolerance, recalcification time (P=0.000-0.038). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and PT early-invasive LC (rank=1), PT N0—N12 (rank=2), thrombocytes/CC (3), erythrocytes/CC (4), eosinophils/CC (5), healthy cells/CC (6), lymphocytes/CC (7), segmented neutrophils/CC (8), stick neutrophils/CC (9), monocytes/CC (10); leucocytes/CC (11). Correct prediction of 5YS was 100% by neural networks computing (area under ROC curve=1.0; error=0.0).
CONCLUSIONS: 5YS of LCP after radical procedures significantly depended on: 1) PT early-invasive cancer; 2) PT N0--N12; 3) cell ratio factors; 4) blood cell circuit; 5) biochemical factors; 6) hemostasis system; 7) AT; 8) LC characteristics; 9) LC cell dynamics; 10) surgery type: lobectomy/pneumonectomy; 11) anthropometric data. Optimal diagnosis and treatment strategies for LC are: 1) screening and early detection of LC; 2) availability of experienced thoracic surgeons because of complexity of radical procedures; 3) aggressive en block surgery and adequate lymph node dissection for completeness; 4) precise prediction; 5) adjuvant chemoimmunoradiotherapy for LCP with unfavorable prognosis.
2. Congenital hypothyroidism: Overview
Thyroid hormone deficiency at birth1
Most common neonatal metabolic disorder2
Most common preventable cause of mental retardation3
Untreated congenital hypothyroidism resulting in development of
cretinism4
1. Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010 Jun 10;5:17.
2. Park SM, Chatterjee VK. Genetics of congenital hypothyroidism. J Med Genet. 2005;42:379-389.
3. Rose RR, Brown RS. Update of newborn screening and therapy for congenital hypothyroidism. American Academy of Paediatric. 2006, 117 (6) 2290-
2303.
4. Roberts CGP, Ladenson PW. Hypothyroidism. Lancet. 2004;363:793-803.
3.
4. Congenital hypothyroidism:
Epidemiology
1:2630 Indian new borns1
Incidence lower in whites and blacks, somewhat higher in Hispanics,
and highest in the Asian population1
Higher incidence in twin/multiple births, older mothers and preterm
infants2
Female to male ratio 2:11
Higher incidence in patients with Down’s syndrome2
1. IAEA. Screening of Newborns for Congenital Hypothyroidism. International Atomic Energy Agency. Available from: http://www-
pub.iaea.org/MTCD/publications/PDF/Pub1234_web.pdf
2. Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010 Jun 10;5:17.
5. Maternal and pregnancy history
Maternal and pregnancy history:
In 20% of cases, gestation extends beyond 42 weeks
Maternal autoimmune thyroid disease
Radioactive iodine treatment during pregnancy (rare)
Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010 Jun 10;5:17.
6. Clinical manifestations
Most patients being asymptomatic
Symptoms: Decreased activity, increased sleep, feeding difficulty,
constipation, hoarse cry and prolonged jaundice
Signs: Myxoedematous facies, large fontanels, macroglossia, cold
or mottled skin, distended abdomen with umbilical hernia,
bradycardia, hypotonia and decreased reflexes. One-third of
patients birth weight >90th percentile
Radiographs: Absent distal femoral epiphysis
Formation and maturation of bone: Delayed
Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010 Jun 10;5:17.
7. Congenital malformations
Congenital hypothyroidism is associated with increased risk of
congenital malformations such as:
Cardiac malformations
Spiky hair
Cleft palate
Neurologic abnormalities
Genitourinary malformations
Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010 Jun 10;5:17.
8. Classification and aetiology of congenital
hypothyroidism
Primary hypothyroidism
Thyroid dysgenesis: Hypothyroidism due to a developmental anomaly (thyroid
ectopia, athyreosis, hypoplasia, hemiagenesis)
Associated mutations: (Account for only 2% of thyroid dysgenesis cases; 98% unknown)
TTF-2,
NKX2.1
NKX2.5
PAX-9
Thyroid dyshormonogenesis: Hypothyroidism due to impaired hormone
production
Resistance to TSH binding or signalling
Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010 Jun 10;5:17.
9. Classification and aetiology of congenital
hypothyroidism
Central hypothyroidism (secondary hypothyroidism)
Isolated TSH deficiency (TSH b subunit gene mutation)
Thyrotropin-releasing hormone resistance
Hypothyroidism due to deficient transcription factors involved in pituitary
development or function2
Peripheral hypothyroidism
Resistance to thyroid hormone
Abnormalities of thyroid hormone transport
Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010 Jun 10;5:17.
10. Classification and aetiology of congenital
hypothyroidism
Syndromic hypothyroidism1
(Pendred syndrome)
Transient congenital
hypothyroidism1
Maternal autoimmune
thyroiditis
Maternal medication for Graves’
disease
1. Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010 Jun 10;5:17.
2. NIDCD. Pendred syndrome. National Institute on Deafness and Other Communication Disorders. Available from:
https://www.nidcd.nih.gov/sites/default/files/Documents/health/hearing/NIDCD-Pendred-Syndrome.pdf
Diagram of normal inner ear and enlarged vestibular aqueduct in Pendred syndrome.2
11. Newborn thyroid screening tests
Primary congenital hypothyroidism (CH) screening has been shown to be
effective for the testing of cord blood or blood collected after the age of 24
hours, although the best “window” for testing is 48 to 72 hours of age.
Blood is spotted onto filter paper, allowed to dry, and eluted into a buffer for
TSH analysis.
This method detects primary CH more effectively than primary T4 screening.
Primary T4 screening with confirmatory TSH testing entails a risk of missing
some cases of mild forms of primary CH but can detect some cases of
central CH.
1. Léger J, Olivieri A, Donaldson M, et al. European Society for Paediatric Endocrinology Consensus Guidelines on Screening, Diagnosis, and Management of
Congenital Hypothyroidism. The Journal of Clinical Endocrinology and Metabolism. 2014;99(2):363-384.
12. Newborn thyroid screening tests
Screening strategies:
Initial T4 assay <10th percentile, follow-up TSH test
To detect infants with secondary or central (hypopituitary) hypothyroidism and
infants with delayed TSH rise
Initial blood TSH assay >30 mU/L serum (>15 mU/L whole blood)
To detect infants with mild or ‘subclinical’ hypothyroidism
Simultaneous T4 assay and TSH assay
To detect infants with defects of thyroid transport, metabolism or action
Thyroid radionuclide uptake and scan
Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010 Jun 10;5:17.
13. Serum tests of thyroid function
Reference ranges for thyroid function tests at ages 1 to 4 days and 2
to 4 weeks
Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010 Jun 10;5:17.
Age Free T4 (pmol/L) Total T4 (nmol/L) TSH (mU/L)
1–4 days 25–64 129–283 <39
2–4 weeks 10–26 90–206 <10
14. Management of congenital
hypothyroidism
Oral L-Thyroxine (L-T4), 10 to 15 µg/kg/d is the treatment of choice
Serum T4 concentration should become normal within 1 to 2 weeks, and serum TSH
should be normal in most infants after 1 month of treatment.1
Treatment goals given by the American Academy of Pediatrics are:2
Serum free T4 or total T4 should be kept in the upper range of normal during the first year of life
Target values during the first year are 130 to 206 nmol/L (10–16 μg/dL) for the serum T4 and 18
to 30 pmol/L (1.4–2.3 ng/dL) for free T4
Serum TSH should be kept below 5 mU
1. Alexander EK, Pearce EN, Brent GA, et al. 2017 Guidelines of the American Thyroid Association for the Diagnosis and Management of Thyroid
Disease During Pregnancy and the Postpartum. Thyroid. 2017 Mar;27(3):315-389.
2. Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010 Jun 10;5:17.
15. Management of Congenital
Hypothyroidism
Goal: To normalize T4 within 2 weeks and TSH within 1 month
Assess permanence of congenital hypothyroidism
If initial thyroid scan shows ectopic/absent gland, congenital hypothyroidism
is permanent
If initial TSH is <50 mIU/L and there is no increase in TSH after newborn
period, off- therapy period is recommended at 3 years of age
If TSH increases during the off-therapy period, consider the condition as
permanent congenital hypothyroidism
Medications: LT4: 10-15 g/kg by mouth once-daily
Monitoring: Recheck T4 and TSH
At 2-4 weeks after initiation of LT4 treatment
Every 1-2 months in the first 6 months
Every 3-4 months between 6 months and 3 years of age
Every 6-12 months from 3 years of age to end of growth
Editor's Notes
Congenital hypothyroidism is due to thyroid hormone deficiency at birth. It is the most common neonatal metabolic disorder and the most common preventable cause of mental retardation. Untreated congenital hypothyroidism results in development of cretinism.
References:
Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010 Jun 10;5:17.
Park SM, Chatterjee VK. Genetics of congenital hypothyroidism. J Med Genet. 2005;42:379-389.
Rose RR, Brown RS. Update of newborn screening and therapy for congenital hypothyroidism. American Academy of Paediatric. 2006, 117(6):2290-2303.
Roberts CGP, Ladenson PW. Hypothyroidism. Lancet. 2004;363:793-803.
Congenital hypothyroidism (CH) occurs in approximately 1:2630 Indian newborns.
Incidence was lower in whites and blacks, somewhat higher in Hispanics, and highest in the Asian population.
Higher incidence was also noticed in twin/multiple births, newborns of older mothers and preterm infants.
Female to male ratio is 2:1.
Patients with Down’s syndrome have a higher incidence.
References:
IAEA. Screening of Newborns for Congenital Hypothyroidism. International Atomic Energy Agency. Available from: http://www-pub.iaea.org/MTCD/publications/PDF/Pub1234_web.pdf
Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010 Jun 10;5:17.
Owing to the slow development of obvious clinical features of congenital hypothyroidism, many new born infants at birth often remain undiagnosed; however, maternal and pregnancy history may provide some clues. In 20% cases, gestation extends beyond 42 weeks. There may be a history of maternal autoimmune thyroid disease, iodine deficient diet and rarely radioactive iodine treatment during pregnancy.
References:
Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010 Jun 10;5:17.
Most of the patients are asymptomatic.
The symptoms of CH include decreased activity, increased sleep, feeding difficulty, constipation, hoarse cry and prolonged jaundice.
The signs may include myxedematous facies, large fontanels, macroglossia, cold or mottled skin, a distended abdomen with umbilical hernia, bradycardia, hypotonia and decreased reflexes. One-third of patients have a birth weight greater than 90th percentile.
Radiographs may reveal absent distal femoral epiphysis.
References:
Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010 Jun 10;5:17.
Congenital hypothyroidism is associated with increased risk of congenital malformations such as cardiac malformations, spiky hair, cleft palate, neurologic abnormalities and genitourinary malformations.
References:
Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010 Jun 10;5:17.
Types of congenital hypothyroidism are primary hypothyroidism, central hypothyroidism (secondary hypothyroidism), peripheral hypothyroidism, syndromic hypothyroidism and transient congenital hypothyroidism.
References:
Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010 Jun 10;5:17.
Classification and aetiology of congenital hypothyroidism are given in the slide.
References:
Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010.
Congenital hypothyroidism can also be syndromic hypothyroidism as seen in Pendred syndrome or transient congenital hypothyroidism that occurs due to maternal autoimmune thyroiditis or maternal medication for Graves’ disease.
Three major screening strategies are used.
Initial T4 assay is carried out followed by TSH test if T4 is <10th percentile. This is used to detect infants with secondary or central (hypopituitary) hypothyroidism and infants with delayed TSH rise.
Initial blood TSH assay is helpful in detecting infants with mild or ‘subclinical’ hypothyroidism.
Simultaneous T4 assay and TSH assay are used to detect infants with defects of thyroid transport, metabolism or action.
References:
Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010.
Reference ranges for thyroid function tests at ages 1 to 4 days and 2 to 4 weeks are mentioned in the table.
References:
Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010.
Oral L-Thyroxine (L-T4), 10 to 15 μg/kg/d is the treatment of choice for CH.
The treatment goals given by the American Academy of Paediatrics (AAP) are as follows:
Serum free T4 or total T4 should be kept in the upper range of normal during the first year of life.
Target values during the first year are 130 to 206 nmol/L (10–16 μg/dL) for the serum T4 and 18 to 30 pmol/L (1.4–2.3 ng/dL) for free T4.
Serum TSH should be kept under 5 mU.
References:
Rastogi MV, LaFranchi SH. Congenital hypothyroidism. Orphanet J Rare Dis. 2010.