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- Själander, Anders, et al.
(author)
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Menorrhagia and minor bleeding symptoms in women on oral anticoagulation.
- 2007
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In: Journal of Thrombosis and Thrombolysis. - : Springer Science and Business Media LLC. - 1573-742X .- 0929-5305. ; 24:1, s. 39-41
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Journal article (peer-reviewed)abstract
- Background Oral anticoagulation (OA) is a common treatment with a known risk of fatal or major bleeding, but also minor bleeding symptoms and menorrhagia can cause substantial discomfort and necessitate medical or surgical interventions. The extent of these side effects is however not previously reported. The objective of this study is to assess the frequency of minor bleeding symptoms and menorrhagia attributed to OA treatment. Methods Ninety fertile women between 15 and 49 years-of-age on OA treatment completed an inquiry at the anticoagulation clinics of Malmö, Lund and Gothenburg, Sweden. Results The frequency of minor bleeding symptoms was significantly increased during OA treatment (P < 0.05) except for hematuria. The incidence of bleeding after tooth extraction (>3 h) increased from 3.0 to 45.2%, easy bruising 17.8–75.6%, epistaxis 11.1–23.6%, gingival bleeding 22.2–48.3% and hematuria 10.0–15.6% (Table 1). Hematemesis was reported in 5.6% prior to as compared to 14.4% during OA treatment, blood in the feces in 8.9 and 18.9%, respectively. Mean duration of menses increased from 5.6 to 6.1 days (P < 0.01) and reported menorrhagia from 44.2 to 70.8% (P < 0.001). Eighteen percent were treated for menorrhagia before and 29.9% during OA treatment (P < 0.01). Conclusions OA treatment is known to confer increased risk of fatal or major bleeding. This study shows that fertile women on OA also experience significantly increased minor bleeding symptoms including menorrhagia that may considerably impair quality of life.
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- Wallerstedt, Susanna Maria, 1970, et al.
(author)
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Risk of clinically relevant bleeding in warfarin-treated patients--influence of SSRI treatment.
- 2009
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In: Pharmacoepidemiology and drug safety. - : Wiley. - 1099-1557 .- 1053-8569. ; 18:5, s. 412-6
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Journal article (peer-reviewed)abstract
- PURPOSE: To investigate the risk of clinically relevant bleeding in warfarin-treated patients with or without concomitant treatment with selective serotonin reuptake inhibitors (SSRIs). METHODS: A cohort study was performed in patients treated with warfarin due to atrial fibrillation. Exposed patients were defined as patients treated with SSRI at any time between January 1999 and September 2005 (n = 117). Unexposed patients without SSRI-treatment were randomly selected and matched for age and sex (1:1). The primary endpoint was hospital admission due to bleeding during the same time period. RESULTS: Bleeding occurred in 17 exposed patients (totally 23 bleedings) and in two unexposed patients (totally two bleedings) (p = 0.0003). A total of 11 bleedings occurred during treatment with the combination of warfarin and SSRI, and 14 during treatment with warfarin only. The total incidences of bleedings per 1000 treatment years were 51.4 (25.7-92.0) and 23.9 (13.1-40.1), respectively, and the unadjusted incidence rate ratio (IRR) 2.15 (0.88-5.11). Cox regression analysis including first bleedings revealed an adjusted hazard ratio of 3.49 (1.37-8.91) for bleeding during treatment with a combination of SSRI and warfarin compared with treatment with warfarin only. Initiation of SSRI therapy was not associated with a change in dose of warfarin or with a change in international normalized ratio (INR) (p = 0.48 and p = 0.31, respectively). CONCLUSION: Addition of SSRI to warfarin-treated patients may be associated with an increased risk of clinically relevant bleeding. The effect seems not to be associated with a direct influence of SSRI on the anti-coagulant activity of warfarin.
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