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The management of cardiovascular diseases in rural areas is plagued by the limited access of rural residents to medical facilities and specialists. The development of telecardiology using information and communication technology may overcome such limitation. To shed light on the global trend of telecardiology, we summarized the available literature on rural telecardiology. Using PubMed databases, we conducted a literature review of articles published from January 2010 to December 2020. The contents and focus of each paper were then classified. Our search yielded nineteen original papers from various countries: nine in Asia, seven in Europe, two in North America, and one in Africa. The papers were divided into classified fields as follows: seven in tele-consultation, four in the telemedical system, four in the monitoring system, two in prehospital triage, and two in tele-training. Six of the seven tele-consultation papers reported the consultation from rural doctors to urban specialists. More reports of tele-consultations might be a characteristic of telecardiology specific to rural practice. Further work is necessary to clarify the improvement of cardiovascular outcomes for rural residents.

The current guideline recommends lowering low-density lipoprotein cholesterol (LDL-C) for the primary management of dyslipidemia in patients at high-risk of cardiovascular events. Patients who have achieved LDL-C levels below the recommended targets may still experience cardiovascular events, suggesting additional therapeutic targets beyond LDL-C. The aim of this study was to investigate whether high-density lipoprotein cholesterol (HDL-C) levels had an impact on plaque stabilization in patients with acute coronary syndrome (ACS). This study consisted of 90 ACS patients with untreated dyslipidemia. In optical coherence tomography (OCT) analysis, a plaque with fibrous cap thickness ≦160 μm was defined as a high-risk plaque. We registered one high-risk plaque per one patient by baseline OCT imaging, and then administrated high-intensity statin. Based on the follow-up OCT results, patients whose registered plaque was no longer high-risk plaque were classified into a responder group and the remains into a non-responder group. No differences were observed in the baseline LDL-C and HDL-C levels between the two groups. Reduction of LDL-C levels (δ LDL-C: -53 ± 21 mg/dL vs. -42 ± 29 mg/dL, p = 0.036) and increase of HDL-C levels (δ HDL-C: 2.5 ± 5.9 mg/dL vs. -0.3 ± 6.7 mg/dL, p = 0.039) were greater in the responder group. On multivariate logistic regression analysis, δ LDL-C levels (OR: 0.956, 95% CI: 0.921-0.993; p = 0.020) and δ HDL-C levels (OR: 1.143; 95% CI: 1.005-1.300, p = 0.041) were independent contributors for plaque stabilization. Increase of HDL-C levels is associated with plaque stabilization in patients with ACS. HDL-C could be a therapeutic target for residual risk management.

Abstract Background Kounis syndrome is the concurrence of acute coronary syndrome (ACS), including coronary spasm, acute myocardial infarction, and stent thrombosis due to an allergic and/or anaphylactoid insult. Case summary We present two cases of Kounis syndrome likely triggered by insect bites, with plaque erosion demonstrated using optical coherence tomography (OCT). Three common findings were derived from this case series. First, the patients developed a rash after an insect bite followed by ACS. Second, immunoglobulin E levels were increased. Finally, OCT identified the aetiology of ACS in this case series as erosion of the culprit lesions. Discussion Kounis syndrome, which is ACS following allergic reactions due to insect bites, is a rare complication. Kounis syndrome is probably not uncommon, but underdiagnosed. It is important for physicians to consider the treatment of Kounis syndrome in the complex course of ACS associated with allergic reactions. Furthermore, patients with a history of Kounis syndrome should avoid antigen exposure during secondary prophylaxis. In some cases, it may take several days from antigen exposure to the onset of ACS. Considering Kounis syndrome is beneficial for early diagnosis and appropriate treatment. Graphical Abstract Graphical Abstract

Aims Early risk stratification of patients with acute heart failure (AHF) is critical for appropriate triage and outcome improvement. The serum sodium, blood urea nitrogen, age, serum albumin, systolic blood pressure, and natriuretic peptide level (SOB‐ASAP) score can predict in‐hospital mortality of AHF. However, the relationship between the SOB‐ASAP score and long‐term prognosis is unknown. This study investigated the determinants of the long‐term prognosis of AHF by evaluating the SOB‐ASAP score. Methods This retrospective cohort study included all patients with acute decompensated heart failure who were admitted to our hospital between April 2017 and March 2018. And those who discharged were analysed retrospectively. The follow‐up period was 3 years. Primary end point was all‐cause death. Results Total of 140 patients were analysed. The median SOB‐ASAP score of entire cohort on admission was 3 points (interquartile range; 1–5). The Kaplan–Meier curve demonstrated that patients in the higher SOB‐ASAP group (score ≥3) had a higher incidence of all‐cause death (log‐rank test; P < 0.001) than those in the lower SOB‐ASAP (group score <3). Conclusions At admission, the SOB‐ASAP score may be useful for predicting the long‐term prognosis of hospitalized patients with AHF.