Euthyroid sick syndrome: Difference between revisions

	Euthyroid sick syndrome;
ICD-10	E07.8
ICD-9	790.94
MeSH	D005067

	Euthyroid sick syndrome Microchapters
Home
Patient Information
Overview
Historical Perspective
Classification
Pathophysiology
Causes
Differentiating Euthyroid sick syndrome from other Diseases
Epidemiology and Demographics
Risk Factors
Screening
Natural History, Complications and Prognosis
Diagnosis
Diagnostic Criteria
History and Symptoms
Physical Examination
Laboratory Findings
Electrocardiogram
X-ray
Echocardiography/Ultrasound
CT scan
MRI
Other Imaging Findings
Other Diagnostic Studies
Treatment
Medical Therapy
Surgery
Primary Prevention
Secondary Prevention
Cost-Effectiveness of Therapy
Future or Investigational Therapies
Case Studies
Case #1
Euthyroid sick syndrome On the Web
Most recent articles
Most cited articles
Review articles
CME Programs
Powerpoint slides
Images
American Roentgen Ray Society Images of Euthyroid sick syndrome All Images X-rays Echo & Ultrasound CT Images MRI
Ongoing Trials at Clinical Trials.gov
US National Guidelines Clearinghouse
NICE Guidance
FDA on Euthyroid sick syndrome
CDC on Euthyroid sick syndrome
Euthyroid sick syndrome in the news
Blogs on Euthyroid sick syndrome
Directions to Hospitals Treating Psoriasis
Risk calculators and risk factors for Euthyroid sick syndrome

VisualWikitext

Revision as of 14:20, 4 August 2017

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief:

Synonyms and keywords: sick euthyroid syndrome; non-thyroidal illness syndrome; low T3 low T4 syndrome

Overview

Historical Perspective

Classification

Pathophysiology

Causes

Drugs leading to decreased 5'monodeiodinase are propranolol (high doses), amiodarone, and glucocorticoid therapy.

Differentiating Euthyroid sick syndrome from Other Diseases

Fasting, starvation, sepsis, trauma, cardiopulmonary bypass, malignancy, heart failure, hypothermia, myocardial infarction, chronic renal failure, cirrhosis, and diabetic ketoacidosis.

Epidemiology and Demographics

Euthyroid sick syndrome is seen in 40-100% patients of nonthyroidal illness.

Age

Euthyroid sick syndrome is more commonly seen in elderly population. People over 65 have more chronic illnesses and have a greater probability of developing euthyroid sick syndrome.

Race

Euthyroid sick syndrome has no racial predilection.

Sex

Euthyroid sick syndrome affects men and women equally.

Risk Factors

Screening

Natural History, Complications, and Prognosis

Natural History

Complications

Prognosis

Diagnosis

Diagnostic Criteria

History and symptom

The common symptoms and signs of clinical hypothyroidism are listed in the table below. The appearance of symptoms depends on the degree of hypothyroidism severity: ^[1]^[2]^[3]^[4]

Symptoms	Constituitional	HEENT	Neuromuscular	Other findings
More common	Fatigue Cold intolerance Decreased sweating Hypothermia Coarse skin Weight gain	Hoarseness Goiter Fullness in the throat and neck	Depression Emotional lability Attention deficit	Macroglossia Obstructive sleep apnea Paresthesia Nerve entrapment syndromes (carpal tunnel syndrome) Blurred vision (central hypothyroidism)
Less common	Puffiness Hair loss Constipation Fever If accompanied by thyroiditis	Sore throat Periorbital edema	Slowed speech and movements	Pituitary hyperplasia followed by hyperprolactinemia Ataxia Myxedema coma (with non-pitting edema) Cardiomegaly Pericardial effusion Ascites Hyperlipidemia Galactorrhea Infertility

Physical Examination

Laboratory Findings

Laboratory findings consistent with the diagnosis of euthyroid sick syndrome include

Euthyroid sick syndrome	Laboratory test
Mild euthyroid sick syndrome	Low T3 Normal T4 Normal fT4 Normal TSH Elevated reverse T3
Moderate euthyroid sick syndrome	Low T3 Normal T4 Normal to elevated fT4 Normal to elevated TSH Elevated reverse T3
Severe euthyroid sick syndrome	Low T3 Low T4 Low TSH Normal to low fT4 Elevated reverse T3

Imaging Findings

Other Diagnostic Studies

In euthyroid sick syndrome the thyroid gland appears normal. Therefore, there is no role of thyroid uptake scan in euthyroid sick syndrome.

Treatment

Medical Therapy

Ill patients may have normal to low TSH depending on the spectrum of illness. Total T4 and T3 levels may be altered by binding protein abnormalities, and medications. Reverse T3 are generally increased signifying inhibition of normal Type 1 enzyme or reduced clearance of reverse T3. Measurement of free T4 and/or free T3 levels will be normal.

Surgery

Prevention

External links

McIver B, Gorman C (1997). "Euthyroid sick syndrome: an overview". Thyroid. 7 (1): 125–32. PMID 9086580.

References

↑ Carlé A, Pedersen IB, Knudsen N, Perrild H, Ovesen L, Laurberg P (2014). "Hypothyroid symptoms and the likelihood of overt thyroid failure: a population-based case-control study". Eur. J. Endocrinol. 171 (5): 593–602. doi:10.1530/EJE-14-0481. PMID 25305308.
↑ Diaz A, Lipman Diaz EG (2014). "Hypothyroidism". Pediatr Rev. 35 (8): 336–47, quiz 348–9. doi:10.1542/pir.35-8-336. PMID 25086165.
↑ Samuels MH (2014). "Psychiatric and cognitive manifestations of hypothyroidism". Curr Opin Endocrinol Diabetes Obes. 21 (5): 377–83. doi:10.1097/MED.0000000000000089. PMC 4264616. PMID 25122491.
↑ McDermott MT (2009). "In the clinic. Hypothyroidism". Ann. Intern. Med. 151 (11): ITC61. doi:10.7326/0003-4819-151-11-200912010-01006. PMID 19949140.

Template:WikiDoc Sources

[pmid25305308-1] Carlé A, Pedersen IB, Knudsen N, Perrild H, Ovesen L, Laurberg P (2014). "Hypothyroid symptoms and the likelihood of overt thyroid failure: a population-based case-control study". Eur. J. Endocrinol. 171 (5): 593–602. doi:10.1530/EJE-14-0481. PMID 25305308.

[pmid25086165-2] Diaz A, Lipman Diaz EG (2014). "Hypothyroidism". Pediatr Rev. 35 (8): 336–47, quiz 348–9. doi:10.1542/pir.35-8-336. PMID 25086165.

[pmid25122491-3] Samuels MH (2014). "Psychiatric and cognitive manifestations of hypothyroidism". Curr Opin Endocrinol Diabetes Obes. 21 (5): 377–83. doi:10.1097/MED.0000000000000089. PMC 4264616. PMID 25122491.

[pmid19949140-4] McDermott MT (2009). "In the clinic. Hypothyroidism". Ann. Intern. Med. 151 (11): ITC61. doi:10.7326/0003-4819-151-11-200912010-01006. PMID 19949140.

[1]

[2]

[3]

[4]

@@ Line 19: / Line 19: @@
 ==Overview==
-Euthyroid sick syndrome is a [[thyroid hormone]] disorder where the levels of T3 ([[triiodothyronine]]) and/or T4 ([[thyroxine]]) are at unusual levels, in the setting of a nonthyroidal [[illness]]. Thyroid hormones play a major role in the metabolism, growth and maturation of the human body. [[Euthyroid]] sick [[syndrome]] is seen in conditions of [[starvation]] and [[critical illness]] such as [[sepsis]], [[surgery]], [[Physical trauma|severe trauma]], [[burns]], [[metabolic disorders]], [[bone marrow transplantation]], and [[malignancy]]. During these [[Stress (medicine)|stress]] conditions, there occurs [[hypermetabolism]], increased energy expenditure, [[hyperglycemia]], and muscle loss. It is speculated, that the body in order to contain this [[hypermetabolism]] induces some degree of [[hypothyroidism]] by inhibiting deiodination of [[T4]] to [[Triiodothyronine|T3]] by the enzyme 5’-monodeiodinase. This is an adaptive process by which the body prevents further [[muscle]] and [[calorie]] loss. [[Euthyroid]] sick syndrome presents with low serum [[T3]]. Depending upon the severity and duration of the [[Stress (medicine)|stress]] inducing condition, the thyroid-stimulating hormone([[Thyroid-stimulating hormone|TSH]]), [[thyroxine]] (T4), and [[free T4]] (FT4) are affected in variable proportions.<ref name="pmid9712558">{{cite journal |vauthors=Plank LD, Connolly AB, Hill GL |title=Sequential changes in the metabolic response in severely septic patients during the first 23 days after the onset of peritonitis |journal=Ann. Surg. |volume=228 |issue=2 |pages=146–58 |year=1998 |pmid=9712558 |pmc=1191454 |doi= |url=}}</ref><ref name="pmid21724536">{{cite journal |vauthors=Economidou F, Douka E, Tzanela M, Nanas S, Kotanidou A |title=Thyroid function during critical illness |journal=Hormones (Athens) |volume=10 |issue=2 |pages=117–24 |year=2011 |pmid=21724536 |doi= |url=}}</ref><ref name="pmid30020">{{cite journal |vauthors=Harris AR, Fang SL, Vagenakis AG, Braverman LE |title=Effect of starvation, nutriment replacement, and hypothyroidism on in vitro hepatic T4 to T3 conversion in the rat |journal=Metab. Clin. Exp. |volume=27 |issue=11 |pages=1680–90 |year=1978 |pmid=30020 |doi= |url=}}</ref>
 ==Historical Perspective==

v t e Endocrine pathology: endocrine diseases (E00-35, 240-259)
Thyroid	Hypothyroidism (Iodine deficiency, Cretinism, Congenital hypothyroidism, Goitre, Myxedema) - Hyperthyroidism (Graves disease, Toxic multinodular goitre, Teratoma with thyroid tissue or Struma ovarii) - Thyroiditis (De Quervain's thyroiditis, Hashimoto's thyroiditis, Riedel's thyroiditis) - Euthyroid sick syndrome
Pancreas	Diabetes mellitus (type 1, type 2, coma, angiopathy, ketoacidosis, nephropathy, neuropathy, retinopathy) - Hypoglycemia - Hyperinsulinism - Zollinger-Ellison syndrome - insulin receptor (Rabson-Mendenhall syndrome)
Parathyroid	Hypoparathyroidism (Pseudohypoparathyroidism) - Hyperparathyroidism (Primary, Secondary, Tertiary)
Pituitary	Hyperpituitarism (Acromegaly, Hyperprolactinaemia, SIADH) - Hypopituitarism (Simmonds' disease / Sheehan's syndrome, Kallmann syndrome, Growth hormone deficiency, Diabetes insipidus) - Adiposogenital dystrophy - Empty sella syndrome - Hypophysitis
Adrenal	Cushing's syndrome (Nelson's syndrome, Pseudo-Cushing's syndrome) - CAH (Lipoid, 3β, 11β, 17α, 21α) - Hyperaldosteronism (Conn syndrome, Bartter syndrome) - Adrenal insufficiency (Addison's disease) - Hypoaldosteronism
Gonads	Ovarian dysfunction (Polycystic ovary syndrome, Premature ovarian failure) - Testicular dysfunction (5-alpha-reductase deficiency) - Testosterone biosynthesis (17-beta-hydroxysteroid dehydrogenase deficiency) - General (Hypogonadism, Delayed puberty, Precocious puberty)
Other	Androgen insensitivity syndrome - Autoimmune polyendocrine syndrome - Carcinoid syndrome - Gigantism - Short stature (Laron syndrome, Psychogenic dwarfism) - Multiple endocrine neoplasia (1, 2) - Progeria - Woodhouse-Sakati syndrome

Euthyroid sick syndrome
ICD-10	E07.8
ICD-9	790.94
MeSH	D005067