Publications by authors named "Philipp Jakob"

Article Synopsis
  • * This study analyzed data from over 900 high-risk AF patients to compare outcomes between those receiving LAAO and those getting traditional treatment (mostly oral anticoagulants).
  • * Results showed no significant differences in stroke or cardiovascular death rates, but LAAO patients experienced significantly less clinically relevant bleeding compared to those on conventional treatments.
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Article Synopsis
  • - The study focuses on vascular complications during transfemoral transcatheter aortic valve implantation (TAVI) and introduces a new risk score called the passage-puncture score to assess the best access site.
  • - This score evaluates two factors: the feasibility of accessing the ilio-femoral arteries (passage score) and the suitability of the puncture site (puncture score) using pre-procedure CT scans.
  • - Results showed that using the passage-puncture score helped identify safer access points and led to a low rate of minor vascular complications (6%) in the patients studied.
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Background: Left atrial appendage closure (LAAC) represents an alternative to oral anticoagulation for stroke prevention in patients with non-valvular atrial fibrillation (AF). While transoesophageal echocardiography is the current standard for guiding LAAC procedures, several centers have employed fluoroscopic guidance alone. However, data on long-term outcomes are lacking.

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Background: In patients with ST-segment elevation myocardial infarction (STEMI) with multivessel coronary artery disease, the time at which complete revascularization of nonculprit lesions should be performed remains unknown.

Methods: We performed an international, open-label, randomized, noninferiority trial at 37 sites in Europe. Patients in a hemodynamically stable condition who had STEMI and multivessel coronary artery disease were randomly assigned to undergo immediate multivessel percutaneous coronary intervention (PCI; immediate group) or PCI of the culprit lesion followed by staged multivessel PCI of nonculprit lesions within 19 to 45 days after the index procedure (staged group).

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Ischemic cardiomyopathy, driven by loss of cardiomyocytes and inadequate proliferative response, persists to be a major global health problem. Using a functional high-throughput screening, we assessed differential proliferative potential of 2019 miRNAs after transient hypoxia by transfecting both miR-inhibitor and miR-mimic libraries in human iPSC-CM. Whereas miR-inhibitors failed to enhance EdU uptake, overexpression of 28 miRNAs substantially induced proliferative activity in hiPSC-CM, with an overrepresentation of miRNAs belonging to the primate-specific C19MC-cluster.

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Background: As numbers and complexity of percutaneous coronary interventions are constantly increasing, optimal radiation protection is required to ensure operator safety. Suspended radiation protection systems (SRPS) and protective scatter-radiation absorbing drapes (PAD) are novel methods to mitigate fluoroscopic scattered radiation exposure. The aim of the study was to investigate the effectiveness regarding radiation protection of a SRPS and a PAD in comparison with conventional protection.

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Objectives: The aim of this study was to determine the role of N-terminal pro-B-type natriuretic peptide (NT-proBNP) in the prognostication of patients ≥80 years of age undergoing percutaneous coronary intervention (PCI).

Background: Elderly patients with coronary artery disease in need of PCI represent a growing patient population. Advanced risk prediction in this frail and comorbid patient population is important.

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The retrograde valve-crossing of a stenotic aortic valve is a crucial step in the transcatheter aortic valve implantation procedure. In addition to being time-consuming and associated with an increased stroke risk, inappropriate valve-crossing may cause devastating complications. This tutorial review summarizes systematic and detailed techniques to cross the aortic valve.

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We report the case of a 78-year-old female with Sapien 3 transcatheter heart valve implantation in the transcaval approach. In this setting, we describe the step-by-step management and technique of the transcaval transcatheter aortic valve implantation.

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Inflammasomes are crucial gatekeepers of the immune response, but their maladaptive activation associates with inflammatory pathologies. Besides canonical activation, monocytes can trigger non-transcriptional or rapid inflammasome activation that has not been well defined in the context of acute myocardial infarction (AMI). Rapid transcription-independent inflammasome activation induced by simultaneous TLR priming and triggering stimulus was measured by caspase-1 (CASP1) activity and interleukin release.

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Personalized Therapeutic Concepts in Chronic Coronary Syndromes Chronic coronary syndromes (CCS) are related to substantial morbidity and mortality. Myocardial ischemia in CCS is caused by either obstructive or non-obstructive alterations of the coronary arteries, including both morphological and functional changes of epicardial vessels and the coronary microvasculature. Diagnostic algorithms of patients with suspected CCS include non-invasive and invasive imaging and functional testing.

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Yohimbine is a highly selective and potent α-adrenoceptor antagonist, which is usually treated as an adjunction for impotence, as well for weight loss and natural bodybuilding aids. However, it was recently reported that Yohimbine causes myocardial injury and controversial results were reported in the setting of cardiac diseases. Here, we used human-induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) as a model system to explore electrophysiologic characterization after exposure to Yohimbine.

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Background This study sought to investigate the role of postprocedural troponin elevations in mortality prediction after transcatheter aortic valve implantation and to define the threshold at which clinically relevant postprocedure myocardial injury determines mortality. Methods and Results A total of 1333 consecutive patients with transcatheter aortic valve implantation with available postprocedural high-sensitivity cardiac troponin T measurements were included in the analysis. The threshold at which postprocedure myocardial injury determines long-term mortality was identified using restricted cubic spline analysis.

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The Role of Percutaneous Coronary Revascularization in Chronic Coronary Syndromes Coronary heart disease represents the leading cause of morbidity and mortality worldwide. Optimal management of these patients is therefore crucial and includes lifestyle changes, optimal medical therapy, and coronary revascularization. This review summarizes diagnostic and therapeutic strategies of patients with chronic coronary syndromes, focusing on the 2019 European Society of Cardiology (ESC) guidelines for the diagnosis and management of chronic coronary syndromes.

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Background: Patients with signs and symptoms suggestive of myocardial infarction and non-obstructive coronary arteries are at increased risk of adverse events. The aim of this study was to investigate the predictive role of renal function in troponin-positive patients with non-obstructive coronary arteries.

Methods: A total of 564 troponin-positive patients with non-obstructive coronary arteries at coronary angiography and available baseline creatinine levels were stratified according to baseline renal function (normal/stage 1: estimated glomerular filtration rate [eGFR] >90 ml/min/1.

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Background: Quantitative flow ratio (QFR) is a novel, adenosine-free method for functional lesion interrogation based on 3-dimensional quantitative coronary angiography and computational algorithms. We sought to investigate the diagnostic performance of QFR versus myocardial perfusion imaging positron emission tomography (MPI-PET), which yields the highest accuracy for detection of myocardial ischemia.

Methods: Diagnostic performance of QFR versus MPI-PET was assessed in consecutive patients undergoing both clinically indicated coronary angiography and N-ammonia MPI-PET within a six-month period.

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Objectives: The number of elderly patients undergoing coronary revascularization is steadily increasing, and data on the impact of gender on outcomes are scarce. This study sought to assess gender-related differences in outcomes in elderly patients with acute coronary syndromes (ACS).

Methods: We investigated outcomes in elderly ACS patients referred for coronary angiography and prospectively enrolled in the Swiss ACS Cohort between December 2009 and October 2012.

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Functional decrease has been linked with adverse events in different clinical contexts. The predictive role of activity of daily living status as assessed by the Barthel index (BI) in elderly patients who underwent percutaneous coronary intervention (PCI) has not been investigated, yet. In this study, a total of 616 patients (≥80 years) who underwent PCI between January 2009 and December 2014 and with available activity of daily living data on admission were stratified according to BI (low BI <85, intermediate BI 85 to 95, high BI 100).

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Background: This study sought to investigate the predictive value of the age, creatinine, and ejection fraction (ACEF) score in patients with acute coronary syndromes (ACS). The ACEF score (age/left ventricular ejection fraction +1 [if creatinine > 176 μmol/L]) has been established in patients evaluated for coronary artery bypass surgery. Data on its predictive value in all-comer ACS patients undergoing percutaneous coronary intervention are scarce.

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