22 research outputs found
Pulmonary flow profile and distensibility following acute pulmonary embolism
<p>Abstract</p> <p>Objective</p> <p>Proof of concept study evaluating CMR as screening tool for chronic thromboembolic pulmonary hypertension (CTEPH) in patients treated for acute pulmonary embolism (PE).</p> <p>Materials and methods</p> <p>Right and left ventricular function of 15 consecutive patients treated for PE and 10 consecutive patients in whom PE was excluded was estimated at baseline by cardiac CT and at 6 months follow-up by CMR. Additionally, during the follow-up visit, pulmonary artery (PA) hemodynamics were studied by CMR and the presence of pulmonary hypertension by echocardiography.</p> <p>Results</p> <p>CT measured right ventricular ejection fraction (RVEF) was lower in patients with PE compared to patients without PE at time of diagnosis (median 47%, interquartile range 39-53 vs. 55%, 52-58; p = 0.014). After 6 months follow up, the RVEF between patients treated for PE and patients without PE were not statistically significant different (55%, 52-60 versus 54%, 51-57; p = 0.57), as were distensibility index (0.18 Ā± 0.18 versus 0.25 Ā± 0.18, p = 0.20), mean velocity (14.1 Ā± 3.9 cm/s versus 14.0 Ā± 2.5 cm/s, p = 0.81), peak velocity (86.5 Ā± 22 cm/s versus 89.6 Ā± 13 cm/s, p = 0.43) and time to peak PA blood flow velocity (142 Ā± 49 ms versus 161 Ā± 29 ms, p = 0.14). One patient was diagnosed with CTEPH and CMR revealed poor right systolic function, decreased PA distensibility and flow velocity, and a systolic notch in the PA flow profile consistent with persistent PA obstruction.</p> <p>Conclusion</p> <p>In this small series, right ventricular performance and PA flow profiles of patients treated for 6 months after PE are equivalent to those parameters in normal patients.</p
215 Reduced aortic elasticity and dilatation are associated with aortic regurgitation and left ventricular dysfunction after the arterial switch operation
Validation and application of tissue-velocity magnetic resonance imaging for the assessment of regional diastolic velocities and diastolic performance of the right ventricle in corrected tetralogy of Fallot patients
Comparison between velocity-encoded magnetic resonance imaging and tissue Doppler imaging to assess timings of right ventricular mechanics in children with corrected Tetralogy of Fallot
Incremental prognostic value of left ventricular function analysis over non-invasive coronary angiography with multidetector computed tomography
Comprehensive assessment of spotty calcifications on computed tomography angiography: Comparison to plaque characteristics on intravascular ultrasound with radiofrequency backscatter analysis
Vascular Biology and Interventio