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Tintinalli's Emergency Medicine: A Comprehensive Study Guide, 7e
| Section 17. Endocrine Emergencies > |
Chapter 224. Thyroid Disorders: Hyperthyroidism and Thyroid Storm
Sections: Thyroid Disorders: Hyperthyroidism and Thyroid Storm: Introduction, Epidemiology, Causes of Hyperthyroidism or Thyrotoxicosis, Pathophysiology, Thyroid Storm Precipitation, Disposition and Follow-Up, Special Populations, Acknowledgment, References.
Topics Discussed: hyperthyroidism; thyroid crisis; thyroid disorders.
Excerpt:"Thyroid hormone affects all organ systems, and is responsible
for increasing metabolic rate, heart rate, ventricle contractility,
as well as muscle and central nervous system excitability. Two major
types of thyroid hormones are thyroxine (T4
) and triiodothyronine
(T3). T4 is the major form of thyroid hormone.
The ratio of T4 to T3 released in the blood is
20:1. Peripherally, T4 is
converted to the active T3, which
is three to four times more potent than T4
...."
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