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In a study of 22 patients with 60 coronary artery bypass grafts, magnetic resonance imaging (MRI) correctly assessed graft patency or occlusion in 90% of cases when compared with selective coronary graft angiography and computed tomography. It is concluded that MRI can detect a normally functioning coronary artery bypass graft and could be used as a(More)
Measurements of radiation distributions in the vicinity of the couch were undertaken for a number of projections commonly employed during cardiac radiological studies. Three types of investigations were considered; cardiac catheterisations, pacemaker implants and percutaneous transluminal coronary angioplasties. The radiation dose to staff involved in these(More)
Antihistamines are commonly used drugs. The more recent additions to the formulary are less sedative, but have been implicated as a cause of ventricular arrhythmias. We report a case in which a deliberate overdose of astemizole was associated with Mobitz type two heart block and prolongation of the QT interval, causing the so-called torsade-de-pointes(More)
The Chiari network is an embryologic remnant that is said to be present in only 1.5-3% of adults. It is rarely of clinical importance but may, very infrequently, be the site of thrombosis. The authors describe a patient in whom a massive right atrial thrombus formed on a Chiari network, leading to intermittent tricuspid obstruction. The thrombus had formed(More)
Thirty-eight patients with conditions predisposing to intracardiac thrombus have been studied by computed tomography and cross-sectional echocardiography. Computed tomography identified 22 cases of intracardiac thrombus (13 left ventricular, eight left atrial and one right atrial). Cross-sectional echocardiography identified five of these left ventricular(More)
The radiation dose to a series of adult and paediatric patients undergoing cardiac catheterisations and adults having percutaneous transluminal coronary angioplasty has been measured/determined directly using lithium fluoride thermoluminescent dosemeters and indirectly using an air ionisation chamber which indicated exposure-area product. Somatic and(More)
OBJECTIVE To compare differences in early mortality and morbidity in patients receiving a single internal mammary artery graft (SIMA) with those receiving bilateral internal mammary artery grafts (BIMA) with a free right internal mammary artery (RIMA). DESIGN Retrospective analysis of 150 patients undergoing BIMA grafting between 1989-1992 who were(More)
Coronary artery bypass grafting (CABG) carries a high risk of acute pancreatitis. We report a pilot study to investigate whether pre-existing oxidative stress might underlie this susceptibility, in that a burst of free radical activity not only accompanies the reperfusion stage of CABG but seems to be a pivotal step in the pathogenesis of pancreatitis.(More)