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(so) A cutting instrument with an edge of sharp toothlike projections; used esp. for cutting bone in surgery.

Gigli s. SEE: Gigli saw.

Stryker s. SEE: under Stryker, Homer H.

saw palmetto

(so pal-met′ō) A low-growing, spreading palm (Serenoa re-pens) native to Florida and the coastal southeastern U.S. An extract is used as a treatment for benign prostatic hyperplasia. Some evidence suggests the extract is clinically effective, and some research indicates that it is not.

image Women of child-bearing age, and esp. pregnant or breast-feeding women, should avoid saw palmetto.


(săk″sĭ-tŏk′sĭn) A neurotoxin produced by some dinoflagellates and concentrated during feeding by mollusks such as mussels and clams. It causes paralytic shellfish poisoning.


Symbol for the element antimony.


subacute bacterial endocarditis.


Screening, brief intervention and referral to treatment (a method to improve the identification and management of patients with substance use disorders).


Symbol for the element scandium.




(skăb) 1. The crust of a cutaneous sore, wound, ulcer, or pustule formed by drying of the discharge. 2. To become covered with a crust.


(skā′bĭ-sīd) An agent that kills mites, esp. the causative agent of scabies.


(skā′bēz) [L. scabies, itch] A contagious infestation of the skin with the itch mite, Sarcoptes scabiei. SEE: illus . scabietic, scabetic (skā′bē-et′ĭk, skă-bet′ĭk), adj.





INCIDENCE: Scabies is prevalent worldwide, but precise data on its incidence and prevalence in the U.S. are not available. The disease is common among the homeless, and outbreaks in day care centers, long-term care facilities, hospitals, and nursing homes occasionally occur.

SYMPTOMS AND SIGNS: It typically presents as an intensely pruritic rash, composed of scaly papules, insect burrows, and secondarily infected lesions distributed in the webs between the fingers and on the waistline, trunk (esp. the axillae), penis, and arms. It readily spreads in households, among playmates, and between sexual partners. An itchy rash that worsens at night and involves several members of the same household is a common presentation.

DIAGNOSIS: Because the disease is often missed and occasionally overdiagnosed, scrapings from suspected burrows are taken with a scalpel dipped in mineral oil. The material obtained is examined microscopically to confirm the presence of the mite, its eggs, ...

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