Impact of Continuous P2Y12 Inhibition Tailoring in Acute Coronary Syndrome and Genetically Impaired Clopidogrel Absorption.

Clopidogrel is still widely used in acute coronary syndrome despite the development of more potent P2Y12 inhibitors. Previously, we conducted a trial that evaluated serial clopidogrel dose adjustment based on platelet function testing in acute coronary syndrome patients with initial high on-treatment platelet reactivity (HTPR). In this substudy, we performed post hoc analysis of the effect of ABCB1 genetic variants C3435T and G2677T/A on platelet inhibition and outcomes. There were no differences in the proportion of HTPR patients among C3435T carriers and noncarriers in both interventional and control group. G2677T carriers expressed significantly higher proportion of HTPR pattern throughout 12-month follow-up in the control group with no difference in the interventional group. There was no difference in ischemic outcomes between C3435T and G2677T carriers and noncarriers in both groups of patients. The results indicate that ABCB1 genotyping is not useful to guide clopidogrel therapy tailoring to improve high-risk patient management.

Continuous remote monitoring of COPD patients-justification and explanation of the requirements and a survey of the available technologies.

Remote patient monitoring should reduce mortality rates, improve care, and reduce costs. We present an overview of the available technologies for the remote monitoring of chronic obstructive pulmonary disease (COPD) patients, together with the most important medical information regarding COPD in a language that is adapted for engineers. Our aim is to bridge the gap between the technical and medical worlds and to facilitate and motivate future research in the field. We also present a justification, motivation, and explanation of how to monitor the most important parameters for COPD patients, together with pointers for the challenges that remain. Additionally, we propose and justify the importance of electrocardiograms (ECGs) and the arterial carbon dioxide partial pressure (PaCO2) as two crucial physiological parameters that have not been used so far to any great extent in the monitoring of COPD patients. We cover four possibilities for the remote monitoring of COPD patients: continuous monitoring during normal daily activities for the prediction and early detection of exacerbations and life-threatening events, monitoring during the home treatment of mild exacerbations, monitoring oxygen therapy applications, and monitoring exercise. We also present and discuss the current approaches to decision support at remote locations and list the normal and pathological values/ranges for all the relevant physiological parameters. The paper concludes with our insights into the future developments and remaining challenges for improvements to continuous remote monitoring systems. Graphical abstract ᅟ.

Cardiopulmonary Interactions with Consecutive Pulmonary Abnormalities in Patients with Chronic Heart Failure.

Chronic heart failure places heavy burden on patients, their families and on health care resources, accounting for high numbers of hospital admissions. Despite huge improvements in the treatment of many heart disorders, the clinical syndrome of chronic heart failure as a final pathway of heart pathology is an exception, in that its prevalence is rising, and only small prolongations in survival are occurring. It is associated with high morbidity and poor prognosis, and a survival rate worse than that for some malignant tumors. The reasons for the increasing overall prevalence of chronic heart failure in developed countries lie in prolonged survival owing to modern pharmacological or invasive treatment, better secondary prevention, and aging of the population. Chronic pulmonary disease is common in patients with chronic heart failure. Through sharing some risk factors and overlapping pathophysiological processes, they present diagnostic and therapeutic challenge. The aim of this article is to review various mechanisms responsible for the symptoms of chronic heart failure with consecutive pulmonary interaction and abnormalities in lung function.

Serial clopidogrel dose adjustment after platelet function testing improves outcome of acute coronary syndrome patients undergoing percutaneous coronary intervention with high on-treatment platelet reactivity.

High on-treatment platelet reactivity (HTPR) on clopidogrel correlates with adverse outcomes in patients treated with percutaneous coronary intervention (PCI). Whether HTPR is a modifiable risk factor for future events is not clear. We evaluated the effect of serial clopidogrel dose adjustment based on platelet function testing (PFT) during 12 months of dual antiplatelet therapy (DAPT) using Multiplate) analyzer in patients with HTPR after PCI in acute coronary syndrome on clinical outcome. Eighty-seven patients were randomized to interventional (n = 43) and control group (n = 44). Blood samples for PFT were drawn at day 1, 2, 3, 7, 30 and at month 2, 3, 6, 9 and 12. Clopidogrel dose was modified at each point of PFT in the interventional group with patients taking up to two additional 600 mg loading doses and a range of 75-300 mg maintenance dose to achieve and maintain optimal platelet reactivity (19-46 U). The incidence of the primary endpoint (composite of cardiovascular death, non-fatal myocardial infarction, target vessel revascularization and ischemic stroke) was significantly higher in the control group (36.3 vs. 16.2%; p = 0.034). There were no differences in total bleeding events (6.8 vs. 4.6%, p = ns). Patients in the interventional group maintained better P2Y12 inhibition during follow-up. We hypothesize that targeting the therapeutic window of platelet reactivity continuously throughout DAPT by dose adjustment of P2Y12 inhibitor may lead to better platelet reactivity control, and thus reduce the rate of ischemic complications in this high risk group of patients.

[Pulmonary Langerhans' cell histiocytosis--case report]. / Plucna histiocitoza Langerhansovih stanica--prikaz bolesnika.

Authors report a case of a 29-year old patient with pulmonary Langerhans' cell histiocytosis who presented with chest pain as a consequence of rib osteolytic process. We carried out a diagnostic work-up which included laboratory and radiographic analysis, lung function tests, bronchoscopy, cytologic and pathologic analysis. After reaching the diagnosis, corticosteroid therapy was introduced with long-term follow-up. In this report, we included a brief review of pulmonary Langerhans' cell histiocytosis.