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Alosetron

Alosetron is a 5-HT3 antagonist used for the management of severe diarrhoea-predominant irritable bowel syndrome (IBS) in women only. It was withdrawn from the market in 2000 owing to the occurrence of serious life-threatening gastrointestinal adverse effects, but was reintroduced in 2002 with availability and use restricted. It is currently marketed by GlaxoSmithKline under the trade name Lotronex. more...

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Mode of action

Alosetron, while being a 5-HT3 antagonist like ondansetron, is not an antiemetic. Alosetron has an antagonist action on the 5-HT3 receptors of the enteric nervous system of the gastrointestinal tract.

Serious adverse effects

Alosetron was withdrawn in 2000 following the association of alosetron with serious life-threatening gastrointestinal adverse effects.

The cumulative incidence of ischaemic colitis was 2 in 1000, while serious complications arising from constipation (obstruction, perforation, impaction, toxic megacolon, secondary colonic ischaemia, death) was 1 in 1000 (GlaxoSmithKline, 2002).

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Clinical quiz
From American Family Physician, 2/1/05

Clinical is for one year Quiz questions are based on selected articles in this issue of American Family Physician. Answers appear in this issue. AFP has been reviewed by the American Academy of Family Physicians as having content acceptable for Prescribed credit. Term of approval from the beginning distribution date of January 2005. This issue has been reviewed and is acceptable for up to 3.5 Prescribed credits. One half of one credit conforms to AAFP criteria for evidence-based CME (EB CME) clinical content. The amount of CME has been doubled to reflect two-for-one credit for the EB CME portion only. When reporting CME credits, AAFP members should report total Prescribed credits earned for this activity. It is not necessary for members to label credits as EB CME for reporting purposes.

The AAFP is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide CME for physicians.

The AAFP designates this educational activity for a maximum of 3.5 Category 1 credits toward the American Medical Association Physician's Recognition Award (AMA/PRA). Each physician should claim only those credits that he or she actually spent in the activity.

AAFP Credit

Each copy of AFP contains a Clinical Quiz answer card. AAFP members may use this card to obtain the designated number of Prescribed credit hours for the year in which the card is postmarked.

AMA/PRA Category 1 Credit

AAFP members who satisfy the Academy's CME requirements are automatically eligible for the AMA/PRA.

Physicians who are not members of the AAFP are eligible to receive the designated number of credits in Category 1 of the AMA/PRA on completion and return of the Clinical Quiz answer card. AFP keeps a record of AMA/PRA Category 1 credits for nonmember physicians. This record will be provided on request; however, nonmembers are responsible for reporting their own Category 1 CME credits when applying for the AMA/PRA or other certificates or credentials.

For health care professionals who are not physicians and are AFP subscribers, a record of CME credit is kept by AAFP and will be provided to you on written request. You are responsible for reporting CME credits to your professional organization.

NOTE: The full text of AFP is available online (http://www.aafp.org/afp), including each issue's Clinical Quiz. The table of contents for each online issue will link you to the Clinical Quiz. Just follow the online directions to take the quiz and, if you're an AAFP member, you can submit your answers for CME credit.

Instructions (1) Read each article, answer all questions on the quiz pages, and transfer your answers to the Clinical Quiz answer card (bound into your copy of AFP). This will help you avoid errors and permit you to check your answers against the correct answers. (2) Mail the Clinical Quiz answer card within one year (by February 1, 2006). The bar code on the answer card contains your identification for CME credit hours. Before beginning the test, please note: Each Clinical Quiz includes two types of questions: Type A and Type X. Type A questions have only one correct answer and may have four or five choices. Here is a typical Type A question:

COPYRIGHT 2005 American Academy of Family Physicians
COPYRIGHT 2005 Gale Group

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