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Bisphosphonates and risk of atrial fibrillation and flutter

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Researchers from Aarhus University Hospital, Denmark, assessed the association between atrial fibrillation and flutter and use of bisphosphonates for osteoporosis among women.

The researchers performed a population based case-control study, using medical databases from Denmark.

Participants included 13 586 patients with atrial fibrillation and flutter and 68 054 population controls, all with complete hospital and prescription history. The main outcome measure was the adjusted relative risk of atrial fibrillation and flutter.

The researchers found that 435 cases (3.2%) and 1958 population controls (2.9%) were current users of bisphosphonates for osteoporosis. Etidronate and alendronate were used with almost the same frequency among cases and controls. The adjusted relative risk of current use of bisphosphonates compared with non-use was 0.95 (95% confidence interval 0.84 to 1.07). New users had a relative risk of 0.75 (95% confidence interval 0.49 to 1.16), broadly similar to the estimate for continuing users (relative risk 0.96, 95% confidence interval 0.85 to 1.09). The relative risk estimates were independent of number of prescriptions and the position of the atrial fibrillation and flutter diagnosis in the discharge record, and were similar for inpatients and outpatients.

The researchers concluded that no evidence was found that use of bisphosphonates increases the risk of atrial fibrillation and flutter.

(Source: Sørensen HT, Christensen S, Mehnert F, Pedersen L, Chapurlat RD, Cummings SR, Baron JA. Use of bisphosphonates among women and risk of atrial fibrillation and flutter: population based case-control study. BMJ. 2008 Mar 11 [Epub ahead of print]: PubMed: April 2008)

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Posted On: 6 April, 2008
Modified On: 16 January, 2014

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