21-hydroxylase deficiency medical therapy: Difference between revisions
Jump to navigation
Jump to search
| Line 36: | Line 36: | ||
====Optimizing growth in congenital adrenal hyperplasia==== | ====Optimizing growth in congenital adrenal hyperplasia==== | ||
*[[Glucocorticoids]] are essential for health and dosing is always a matter of approximation. In even mildly excessive dose, glucocorticoids can slow growth. | *[[Glucocorticoids]] are essential for health and dosing is always a matter of approximation. In even mildly excessive dose, glucocorticoids can slow growth.<ref name="Wikipeadia"> https://en.wikipedia.org/wiki/Congenital_adrenal_hyperplasia_due_to_21-hydroxylase_deficiency</ref><ref name="pmid11344936">{{cite journal| author=Migeon CJ, Wisniewski AB| title=Congenital adrenal hyperplasia owing to 21-hydroxylase deficiency. Growth, development, and therapeutic considerations. | journal=Endocrinol Metab Clin North Am | year= 2001 | volume= 30 | issue= 1 | pages= 193-206 | pmid=11344936 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11344936 }} </ref> | ||
*Adrenal androgens are readily converted to [[estradiol]], which accelerates [[bone age|bone maturation]] and can lead to early epiphyseal closure. | *Adrenal androgens are readily converted to [[estradiol]], which accelerates [[bone age|bone maturation]] and can lead to early epiphyseal closure. | ||
*Rate of growth is assessed by checking the [[bone age]] every year or two through periodic measurement of [[17OHP]] and [[testosterone]] levels. | *Rate of growth is assessed by checking the [[bone age]] every year or two through periodic measurement of [[17OHP]] and [[testosterone]] levels. | ||
| Line 43: | Line 43: | ||
*[[Aromatase inhibitor]] such as [[testolactone]] also block conversion of testosterone to estradiol. | *[[Aromatase inhibitor]] such as [[testolactone]] also block conversion of testosterone to estradiol. | ||
*[[Bilateral adrenalectomy]] rarely used to remove the androgen sources. | *[[Bilateral adrenalectomy]] rarely used to remove the androgen sources. | ||
*[[Growth hormone treatment]] is used to enhance growth. | *[[Growth hormone treatment]] is used to enhance growth. | ||
===Childhood onset (simple virilizing) congenital adrenal hyperplasia=== | ===Childhood onset (simple virilizing) congenital adrenal hyperplasia=== | ||
Revision as of 15:26, 5 October 2015
|
Congenital adrenal hyperplasia due to 21-hydroxylase deficiency Microchapters |
|
Differentiating Congenital adrenal hyperplasia due to 21-hydroxylase deficiency from other Diseases |
|---|
|
Diagnosis |
|
Treatment |
|
Case Studies |
|
21-hydroxylase deficiency medical therapy On the Web |
|
American Roentgen Ray Society Images of 21-hydroxylase deficiency medical therapy |
|
Directions to Hospitals Treating Congenital adrenal hyperplasia due to 21-hydroxylase deficiency |
|
Risk calculators and risk factors for 21-hydroxylase deficiency medical therapy |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Ahmad Al Maradni, M.D. [2]
Overview
The mainstay of therapy for congenital adrenal hyperplasia due to 21-hydroxylase deficiency is glucocorticoid replacement.
Medical Therapy
The mainstay of therapy for congenital adrenal hyperplasia due to 21-hydroxylase deficiency is glucocorticoid replacement.
Early-onset: Severe 21-hydroxylase deficient congenital adrenal hyperplasia
Salt-wasting crisis in infancy
- Hydrocortisone and intravenous saline and dextrose are the mainstay treatment of adrenal crisis.[1]
- This treatment quickly restores blood volume, blood pressure, body sodium content, and reverses the hyperkalemia.
- With appropriate treatment, most infants are out of danger within 24 hours.
Long-term management of congenital adrenal hyperplasia
Management of infants and children with congenital adrenal hyperplasia is complex and warrants long term care in a pediatric endocrine clinic. After the diagnosis is confirmed, and any salt-wasting crisis averted or reversed, major management issues include:[2]
- Initiating and monitoring hormone replacement
- Stress coverage, crisis prevention, parental education
- Reconstructive surgery
- Optimizing growth
- Optimizing androgen suppression and fertility in women with congenital adrenal hyperplasia
Hormone replacement
- Glucocorticoids provide a reliable substitute for cortisol and reduce ACTH level. Reducing ACTH also reduces the stimulus for continued hyperplasia and overproduction of androgens in both sexes.[1]
- Hydrocortisone or liquid prednisolone is preferred in infancy and childhood.
- Prednisone or dexamethasone are often more convenient for adults.
- Dose is typically started at the low end of physiologic replacement (6-12 mg/m2) but is adjusted throughout childhood to prevent both growth suppression from too much and androgen escape from too little glucocorticoid.
- Serum levels of 17OHP, testosterone, androstenedione, and other adrenal steroids are followed for additional information, but may not be entirely normalized even with optimal treatment.
- Mineralocorticoids are replaced in all infants with salt-wasting and in most patients with elevated renin levels.
- Fludrocortisone is the only pharmaceutically available mineralocorticoid, doses of (0.05 to 2 mg) daily is recommended.
- Electrolytes, renin, and blood pressure levels are followed to optimize the dose.
Optimizing growth in congenital adrenal hyperplasia
- Glucocorticoids are essential for health and dosing is always a matter of approximation. In even mildly excessive dose, glucocorticoids can slow growth.[1][3]
- Adrenal androgens are readily converted to estradiol, which accelerates bone maturation and can lead to early epiphyseal closure.
- Rate of growth is assessed by checking the bone age every year or two through periodic measurement of 17OHP and testosterone levels.
- Gonadotropin-releasing hormone agonists such as leuprolide are used to slow bone maturation and suppress precocious puberty.
- Antiandrogen such as flutamide reduce the conversion of testosterone to estradiol.
- Aromatase inhibitor such as testolactone also block conversion of testosterone to estradiol.
- Bilateral adrenalectomy rarely used to remove the androgen sources.
- Growth hormone treatment is used to enhance growth.
Childhood onset (simple virilizing) congenital adrenal hyperplasia
The mainstay of treatment is:[1]
- Suppression of adrenal testosterone production by glucocorticoids such as hydrocortisone.
- Mineralocorticoid in cases where the plasma renin activity is high.
- Suppression of central precocious puberty by leuprolide.
- Aromatase inhibitior to slow bone maturation by reducing the amount of testosterone converted to estradiol, estrogen blockers are also used for the same purpose.
- Stress steroid coverage for significant illness or injury.
Late onset (nonclassical) congenital adrenal hyperplasia
- Combination of very low dose of glucocorticoid (to reduce adrenal androgen production) and androgen blockers (to induce ovulation) are used in late onset congenital adrenal hyperplasia.
References
- ↑ 1.0 1.1 1.2 1.3 https://en.wikipedia.org/wiki/Congenital_adrenal_hyperplasia_due_to_21-hydroxylase_deficiency
- ↑ Schwartz LJ (1977). "Have you told your laboratory man you love him?". Ill Dent J. 46 (6): 281. PMID 275213.
- ↑ Migeon CJ, Wisniewski AB (2001). "Congenital adrenal hyperplasia owing to 21-hydroxylase deficiency. Growth, development, and therapeutic considerations". Endocrinol Metab Clin North Am. 30 (1): 193–206. PMID 11344936.