Patient knowledge on oral anticoagulants: results of a questionnaire survey in Germany and comparison with the literature

Challenges of Older Patients’ Knowledge About Warfarin Therapy

“…36,42,47,63 Notably, between 22% and 49% of older patients receiving warfarin therapy were unaware of the restrictions of alcohol use required when taking warfarin. 49,51,55 Interestingly, Baker et al, 46 in a single-center, crosssectional study, showed that 74% (N = 185) of patients receiving long-term warfarin therapy had achieved a good warfarin knowledge score (78%) based on the validated 29-point Anticoagulation Knowledge Assessment instrument.…”

“…* It is important, however, to highlight that nonvalidated and purpose-built warfarin knowledge-testing instruments were used in many of the studies 36,47,49,51,53,55,[58][59][60] when assessing patient knowledge about warfarin, unlike the recent studies conducted by Winans et al 61 and Baker et al 46 A UK study 53 revealed that as many as 81% of patients (n = 93) receiving warfarin therapy had no knowledge about its benefits with regard to the treatment of their medical condition. Furthermore, evidence from this review indicates that between 45% and 70% of older patients on warfarin therapy had insufficient knowledge about the potential risks associated with their treatment.…”

“…8,11,[32][33][34][35][36][37][38][39][40][41] Kagansky et al 8 showed that older patients (N = 323) with better knowledge about their warfarin therapy (measured by a warfarin knowledge-testing questionnaire) had 45% of their international normalized ratio (INR) values within the therapeutic range as compared with patients with poorer knowledge (35%; P < .001). Tang et al 34 also reported a weak but positive correlation between patients' knowledge of warfarin therapy and the number of INR values that were within the target range (P = .024).…”

Assessment of emergency department patients' knowledge on oral anticoagulation therapy

“…[26] Warfarin en sık ilaç etkileşimi görülen ilaçların başını çekmesine ve her yıl yeni ruhsat alan ilaçlarla potansiyel etkileşimler artmasına rağ-men [27] OAT alan hastaların %30-75 oranı ile en az bildikleri konulardan biridir. [10,12,28,29] Biz bu ankette ilaçları ayrıntılı sorgulamadan yalnızca ilaç etkileşimi bilgisini araştırdık ve ilaç etkileşiminden haberdar hasta oranını çok düşük olarak saptadık. Diğer konularda saptamış olmamıza rağmen bu konuda bilgilendirme ile ilişki saptamadık.…”

“…[18,19,20,28] Baker ve ark. [20] 171 hastaya uyguladıkları yapılandırılmış oral antikoagulan değerlendirme testinde diyet konusunda ayrıntılı sorularla hastaları değerlendirerek %33-42 gibi oranları en az bilinen konu olarak bildirmişlerdir.…”