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(hī″pĕr-tĕn′sĭv) Marked by a rise in blood pressure.


(hī″pĕr-thē-kō′sĭs) [hyper- + theco- + -sis] Hyperplasia of the theca interna of the ovary. Abnormal hair growth, amenorrhea, and an enlarged clitoris (among other symptoms of hyperandrogenism) may be present. SEE: theca folliculi.


(hī″pĕr-thĕr′mē-ă) [hyper- + thermo- + -ia] 1. Artificial elevation of body temperature for therapeutic reasons. 2. An unusually high fever. SYN: hyperpyrexia.

 ETIOLOGY: Hyperthermia may be caused by heat stroke; central nervous system diseases; thyroid storm; or infections such as encephalitis, malaria, meningitis, or sepsis, esp. due to gram-negative organisms.

PATIENT CARE: To treat hyperthermia, the patient is placed in a cool environment; tepid water baths may be used to promote reduction in surface temperature by convection and evaporation. Hypothermia blankets may be used if hyperthermia is the result of neurologic dysfunction or initial therapy is ineffective. Fluid intake is increased to at least 3 L per day (unless otherwise restricted by cardiac or renal disorders) to replace fluids lost through diaphoresis, rapid respirations, and increased metabolic activity. Frequent oral hygiene is provided because dehydration dries the oral mucosa. Shivering is prevented through administration of diazepam.

image Rubbing alcohol should not be used to reduce fever.

malignant h. An autosomal dominant disease marked by skeletal muscle dysfunction after exposure to some anesthetics or other stressors. Body temperatures may climb above 105°F (40.5°C). The condition may be fatal. SYN: malignant hyperpyrexia.

vehicular h. Heat-related illness resulting from confinement in a closed, hot motor vehicle.

hyperthermia treatment

The use of microwave or radiofrequency energy to increase body temperature. This type of therapy, which is usually combined with chemotherapy or radiation, has been used in treating some malignancies and infectious diseases.


(hī″pĕr-thī′mē-ă) [″ + thymos, mind] Pathological sensitivity or excitability.


(hī″pĕr-thī′royd-ĭzm) [hyper- + thyroid, + -ism] A disease caused by excessive levels of thyroid hormone in the body. SEE: Nursing Diagnoses Appendix.

 INCIDENCE: About 1.5% of the American population has hyperthyroidism. The prevalence is highest in people of European-American ancestry and lowest in Hispanic Americans.

 CAUSES: The condition may result from various disorders, such as nodular goiter and toxic adenomas, hyperemesis gravidarum, excessive thyroid hormone replacement, excessive iodine ingestion, or pituitary adenoma; the most common cause, however, is Graves disease. SYN: thyrotoxicosis. SEE: Graves disease.

 SYMPTOMS AND SIGNS: The signs and symptoms of hyperthyroidism are divided into two categories: those secondary to excessive stimulation of the sympathetic nervous system, and those due to ...

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