Publications by authors named "Aharon Frimerman"
Article Synopsis
- A large number of patients over 50 undergoing coronary angiography often have normal or non-obstructive coronary artery disease, leading to a study on their long-term outcomes and re-catheterization rates.
- Out of 1939 NOCAD patients identified, 90% did not require repeat angiography while 10% did; among those who had repeat procedures, a small percentage resulted in successful angioplasty.
- Key risk factors like male gender, obesity, hypertension, diabetes, and smoking were more prevalent in patients needing intervention, and many were not regularly prescribed statins or aspirin for treatment.
Background: Previous studies, published before the advent of primary reperfusion, described the electrocardiographic features of ST-segment elevation myocardial infarction (STEMI) caused by total diagonal artery occlusion, as demonstrated at pre-discharge coronary angiography. We aimed to assess the electrocardiographic and echocardiographic features in STEMI unequivocally attributed to a diagonal lesion in the era of primary coronary intervention.
Methods: The electrocardiograms and echocardiograms of patients sustaining STEMI caused by diagonal artery involvement were compared with those of patients with STEMI attributed to proximal or mid left anterior descending artery (LAD) lesions.
Background: Since the introduction of the electrocardiogram (ECG) in 1902, the fundamentals of ECG data acquisition, display, and interpretation in the clinical arena have not changed much.
Objectives: To present a new method to enhance and improve acquisition, analysis, and display of the standard ECG.
Methods: We performed ECG enhancement by superimposition and summation of multiple standard ECG cycles of each lead, by temporal alignment to peak R wave and voltage alignment to an improved baseline, at the T-P segment.
Background: Movement of the stent delivery system in the coronary bed as a result of the cardiac cycle is a well-known clinical observation that usually is either underestimated or ignored. This effect may potentially jeopardize precise stent deployment. We used a novel technology to objectively measure the relative intracoronary device motion in the different coronary segments throughout the cardiac cycle.
View Article and Find Full Text PDFObjectives: We present our experience with a novel method for real time co-registration of intravascular ultrasound (IVUS) and coronary angiography.
Background: A major limitation of the current practice of concomitant use of coronary angiography and IVUS is that the locations of the acquired IVUS images are not correlated with their exact locations on the vessel roadmap obtained by coronary angiography.
Methods: Phantoms simulating the coronary tree were used to test the accuracy and potential of co-registration.
Patients with recurrent acute myocardial infarction (AMI), who represent ≤35% of hospitalized patients with AMI, are at an increased risk of complications and death. Our study purpose was to compare the treatment and outcome of patients hospitalized with recurrent acute ST-segment elevation myocardial infarction (STEMI) from 1998 to 2006 with those of patients with a first STEMI. We performed 5 biennial nationwide 2-month surveys during 1998 to 2006, collecting data prospectively from all patients hospitalized for AMI or acute coronary syndrome in all 25 coronary care units in Israel.
View Article and Find Full Text PDFBackground: Contemporary stents discharge nickel, chromium and molybdenum which might contribute to restenosis. The Titan stent is coated with titanium nitride-oxide that prevents completely discharge of metal elements.
Aims: To assess short and long term outcome of the Titan in a multi-centre registry.
Unlabelled: Initial intra-aortic balloon pump (IABP) catheters were of large caliber and their utilization resulted in a high incidence of complications, including limb ischemia, bleeding and thrombosis, peripheral neurologic sequelae, and infection. Despite eventual decrease in the size of IABP catheters, the complication rate has remained high.
Hypothesis: The study was undertaken to determine whether use of recently available low-profile IABP catheters would result in a lower incidence of vascular and bleeding complications.
Background: This study compares the outcome of percutaneous coronary interventions (PCI) with bilateral internal thoracic grafting (BITA) in diabetic patients.
Methods: From May 1996 to December 1999, 802 consecutive diabetic patients underwent myocardial revascularization: 363 by PCI and 439 by BITA. The two groups were similar; however, left main disease (28% versus 3.