Ole Rossvoll

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OBJECTIVES This study was conducted to investigate whether pulmonary venous flow variables measured by transthoracic Doppler ultrasound can help identify patients with elevated left ventricular end-diastolic or filling pressures, or both. BACKGROUND A widened left atrial pressure A wave occurs when left ventricular end-diastolic pressure is increased.(More)
BACKGROUND The anatomical structure of atrial flutter is now well recognized, and treatment with radiofrequency catheter ablation (RFA) is established. Several recording and ablation techniques can be applied. MATERIAL AND METHODS An increasing number of patients have been treated with RFA at the Arrhythmia Centre at Haukeland University Hospital over the(More)
Instantaneous cross sectional flow velocity profiles from early mitral flow in 10 healthy men were constructed by time interpolation of the velocity data from each point in sequentially delayed two dimensional digital Doppler ultrasound maps. This interpolation allows correction of the artificially produced skewness of velocities across the flow sector(More)
OBJECTIVE To perform a systematic review of randomized controlled trials (RCTs) on catheter ablation for atrial fibrillation (AF). BACKGROUND Radiofrequency catheter (RF)-ablation around pulmonary vein ostia and in left atrium may reduce or prevent recurrence of AF, as documented in observational studies and registry reports; however, few RCTs are(More)
UNLABELLED Double Posterior Lines of Block in Typical Atrial Flutter. INTRODUCTION The crista terminalis (CT) has been shown to be a barrier to transverse conduction during typical atrial flutter (AFL). However, some studies have demonstrated the presence of functional block in the sinus venosa region but not at the CT. The aim of this study was to define(More)
The cavotricuspid isthmus (CTI) is a slow conduction area in the circuit of typical atrial flutter. However, conventional methods are limited by the inaccuracy of measurements of distance on the surface of the heart. The aim of the study was to define the conduction properties of the atrial flutter circuit along the tricuspid annulus by using a(More)
BACKGROUND Acute ischaemic or haemorrhagic cerebrovascular events may produce myocardial damage. Cardiac troponin I is an indicator of cardiac cell injury with very high sensitivity and specificity. MATERIAL AND METHODS We measured troponin I in 149 acute stroke patients admitted to the stroke unit of Trondheim University Hospital, Norway, in January to(More)
OBJECTIVES To study whether the addition of metformin further improves the blood lipid pattern in non-diabetic patients with coronary heart disease already treated with lovastatin, diet and lifestyle advice. DESIGN An open, prospective, randomized study in a university hospital setting. SUBJECTS Sixty non-diabetic male patients previously treated with(More)
OBJECTIVES The aim of this study was to investigate left ventricular function in subjects with "white coat" hypertension, defined as office arterial diastolic pressure > or = 90 and ambulatory daytime pressures < 140/90 mm Hg. BACKGROUND The white coat arterial pressure response may, by influencing left ventricular function, have a confounding effect in(More)
Three methods for measuring arterial compliance when aortic regurgitation is present are examined. The first two methods are based on a Windkessel model composed of two elements, compliance C and resistance R. Arterial compliance was estimated from diastolic pressure waveforms and diastolic regurgitant flow for one method, and from systolic aortic pressure(More)