Non-vitamin K antagonist oral anticoagulants (NOACs) are an alternative to vitamin K antagonists (VKAs) and have emerged as the treatment of choice in Korea. However, several questions remain regarding the optimal use of these agents in specific clinical situations. In this paper we discuss 1) patients with atrial fibrillation (AF) and coronary artery disease, 2) avoiding confusion with NOAC dosing across indications, 3) cardioversion in a patient treated with a NOAC, 4) AF patients who present with acute stroke while on NOACs, 5) NOACs in special situations, 6) anticoagulation in AF patients with a malignancy, and 7) optimizing VKA dose adjustments.

Background/Aims: It is well known that gender differences are associated with clinical outcomes in patients with acute myocardial infarction (AMI). However, it is not clear whether gender differences affect the prognosis of elderly patients with AMI. Methods: We analyzed the incidence of in-hospital complications and mortality in the Korea Acute Myocardial Infarction Registry-National Institutes of Health from November 2011 to June 2015. This study included elderly patients (≥ 75 years) diagnosed with AMI. Results: A total of 2,953 patients were eligible for this study. Among them, 1,529 (51.8%) patients were female, and the mean age of the female group was older than that of the male group (80.7 ± 4.4 vs. 79.6 ± 4.0 years, respectively, p < 0.001). Elderly females utilized emergency medical services less frequently compared with elderly males (11.5 vs. 15.4%, respectively, p < 0.001). Elderly female AMI patients had a similar rate of in-hospital mortality compared with elderly males (7.1 vs. 8.4%, respectively, p = 0.196). The rate of major cardiac adverse events (MACEs) was lower in elderly females than males during a 12-month follow-up (hazard ratio [HR] 1.19, 95% confidence interval [CI] 1.00-1.41, p = 0.045). According to multivariate analysis, the male gender is an independent factor for predicting 1-year MACEs (HR 1.37, 95% CI 1.14-1.65, p < 0.001). Conclusions: No significant differences in peri-procedural complications or in-hospital mortality were observed between male and female elderly patients with AMI. However, elderly female patients had a more favorable prognosis than male patients during a 1-year clinical follow-up.

Atrial fibrillation (AF) is the most common form of sustained arrhythmia in elderly patients. However, AF is often detected during health screening, or accidentally during testing for other diseases; some patients lack clinical symptoms. Nevertheless, AF increases the incidence of ischemic stroke and other thrombotic events, and compromises cardiovascular prognosis in terms of heart failure, dementia, and hospitalization. Therefore, initial AF management should be performed at the point of primary care, not only in specialized medical centers. We wish to propose a five-step management protocol for AF. We review the evidence supporting integrated management by primary care physicians new to AF, and by specialized physicians who often diagnose and manage AF. Further, we also outline a structured goal-based follow-up protocol; this is an important part of integrated management. (Korean J Med 2018;93:336-343)

Kim과 Paik [1]은 의료에서의 취약함이란 건강상태가 더 나빠질 수 있는 위험이 존재하거나 의료에 대한 접근성이 낮은 것이라고 정의한다. 이는 취약함의 범주를 매우 넓게 파악하는 것이다. 사실 저자의 지적처럼 취약함의 정의는 매우 확대되기도 한다.