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1. in organic chemistry, having certain atoms or radicals on opposite sides of a nonrotatable parent structure.
2. in genetics, denoting two or more loci, especially pseudoalleles, occurring on opposite chromosomes of a homologous pair. See alsocis.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


In chemistry, of two groups having the configuration of being on opposite sides of a ring or a double bond. Compare CIS.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

Patient discussion about trans

Q. My mother had a chest pain and she was sent for a TEE. When do you need a TEE and when a normal echo is fine? My mother had a chest pain few weeks ago. we were sure its a heart attack and went to the ER. There the doctors did some tests and she was sent for a (trans thoracic echocardiogram) TEE. I want to know when do you need a TEE and when you can do just a normal echocardiogram because the TEE was very painful for her and we want to know if ther was a better way.

A. The main difference between TEE and normal echo is that in TEE u put the transducer directly in the esophagus. The transducer is the same and the idea is to put it as close as possible to the heart.
As far as I know there are some heart situations the TEE is better for diagnosis that normal echo. Maybe your mom had one of those situations?
I can recommend you to ask the ER doctor. he will probably be able to give a better explanation for his choice

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References in periodicals archive ?
Tran was sentenced at Newcastle Crown Court on April 24 after previously entering a guilty plea at the same court.
The founding ancestor of the Tran lineage named Tran Dudng Thuan ([phrase omitted]; Chinese: Chen Yangchun) was a native of 'Longxi county in the prefecture of Zhangzhou under the jurisdiction of the Fujian province of the state of the Great Ming' ([phrase omitted]).
On a related note, Tran will reprise her role as Rose Tico in next year's 'Star Wars: Episode IX'.
Tran welcomed more Taiwanese hospitals to place investments in Vietnam, while disclosing that the two sides could sign an MOU on medical cooperation soon.
Mark Hamill also made his feelings clear that he supported Tran by tweeting a photo he took with the actress captioned "what's not to love?" and insisting the harassers need to "get a life."
Twitter fan account Star Wars Facts, meanwhile, confirmed Tran's deletion in a tweet made yesterday, June 5.
In 2016, Tran found herself at the center of the "Party" singer and Soulja Boy's ( Twitter feud after the rapper liked an Instagram picture of the "Claws" actress. Brown threatened the artist which quickly resulted in a nasty exchange of words and several threats.
Let me pinch myself real quick," Tran said, her effervescent excitement bright and obvious.
Tony Tran was all set to report to his dorm at the University of Illinois at Urbana-Champaign when his mother told him she had been diagnosed with cancer.
Her father, Phuong Tran, and her mother, Thanh Nguyen, and her three sisters and little brother were trying to flee the chaos of 1975 Vietnam.
Founder David Tran pioneered his hot sauce recipe in Vietnam in 1975.