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  • Title: Incidence, correlates, and clinical impact of nuisance bleeding after antiplatelet therapy for patients with drug-eluting stents.
    Author: Ben-Dor I, Torguson R, Scheinowitz M, Li Y, Delhaye C, Wakabayashi K, Maluenda G, Syed AI, Collins SD, Gonzalez MA, Gaglia MA, Xue Z, Kaneshige K, Satler LF, Suddath WO, Kent KM, Pichard AD, Waksman R.
    Journal: Am Heart J; 2010 May; 159(5):871-5. PubMed ID: 20435198.
    Abstract:
    BACKGROUND: Nuisance bleeding (NB) after dual antiplatelet therapy (DAPT) is not well characterized despite its potential to impact patient compliance. We therefore aimed to evaluate the incidence, correlates, and clinical impact of NB after DAPT after drug-eluting stent (DES) implantation. METHODS: Included were 2,948 patients with DES implantation who were discharged on DAPT for 12 months. New bleeding classifications were used: alarming bleeding, internal bleeding, and NB. RESULTS: After excluding patients with alarming bleeding (9 [0.3%]) and internal bleeding (128 [4.3%]), the 2,811 remaining patients were divided into 2 groups: those with NB (812 [28.9%]) and those without (1,999 [71.1%]). Patients with NB were significantly younger (63.0 +/- 11.4 vs 65.2 +/- 11.6 years, P < .001), were more often white (82.0% vs 69.6%, P < .001), had lower body mass indices (29.2 +/- 6.1 vs 29.8 +/- 6.0 kg/m(2), P = .01), and a lower prevalence of diabetes (25.5% vs 34.8%, P < .001) compared to those without NB. At 1 year, the rate of major adverse cardiac events was higher in the NB group compared to the nonbleeding group (77 [9.4%] vs 134 [6.7%], P = .02). In the NB group, 46 patients (5.7%) stopped 1 or both antiplatelet therapies. Thirty-five (4.3%) discontinued clopidogrel, 16 (2.0%) stopped aspirin, and 5 (0.61%) stopped both as a result of the reported NB. Multivariable analysis detected younger age, lower body mass index, white race, and without diabetes as correlates associated with NB while on clopidogrel therapy. CONCLUSION: Nuisance bleeding is common in patients on prolonged DAPT post-DES implantation and can impact compliance. Nuisance bleeding appears to have important clinical implications and, if confirmed in prospective trials, should be added to the safety end points assessing new antiplatelet agents.
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