6125 results
Cited 18 times since 2000 (0.7 per year)
source: EuropePMC
International journal of cardiac imaging,
Volume 16, Issue 6, 1 1 2000, Pages 447-453
Good correlation between gated single photon emission computed myocardial tomography and contrast ventriculography in the assessment of global and regional left ventricular function.
Atsma DE, Bavelaar-Croon CD, Germano G, Dibbets-Schneider P, van Eck-Smit BL, Pauwels EK, van der Wall EE
Purpose: The purpose of this study was to determine the reliability of the measured left ventricular ejection fraction (LVEF) and wall motion analysis by the recently introduced quantitative electrocardiographically (ECG)-gated myocardial perfusion single-photon emission computed myocardial tomography technique (gated SPECT) (QGS). Materials and methods: We compared technetium-99 m tetrofosmin gated SPECT imaging and contrast ventriculography in the assessment of global and regional left ventric...
Abstract
Cited 104 times since 2000 (4.3 per year)
source: EuropePMC
The American journal of cardiology,
Volume 86, Issue 12, 1 1 2000, Pages 1299-1305
Comparison of gated single-photon emission computed tomography with magnetic resonance imaging for evaluation of left ventricular function in ischemic cardiomyopathy.
Bax JJ, Lamb H, Dibbets P, Pelikan H, Boersma E, Viergever EP, Germano G, Vliegen HW, de Roos A, Pauwels EK, Van der Wall EE
To perform a head-to-head comparison between magnetic resonance imaging (MRI) and gated single-photon emission computed tomography (SPECT) for the evaluation of left ventricular (LV) function (LV ejection fraction [LVEF], LV volumes, and regional wall motion) in patients with ischemic cardiomyopathy, we studied 22 patients with chronic coronary artery disease and LV dysfunction. Multislice, multiphase echoplanar MRI was performed with Philips Gyroscan ACS-NT15. Image analysis was performed using...
Abstract
Cited 38 times since 2000 (1.6 per year)
source: EuropePMC
Journal of the American College of Cardiology,
Volume 36, Issue 7, 1 1 2000, Pages 2104-2114
Acute and short-term effects of partial left ventriculectomy in dilated cardiomyopathy: assessment by pressure-volume loops.
Schreuder JJ, Steendijk P, van der Veen FH, Alfieri O, van der Nagel T, Lorusso R, van Dantzig JM, Prenger KB, Baan J, Wellens HJ, Batista RJ
Objectives: The aim of this study was to evaluate the short-term effects of partial left ventriculectomy (PLV) on left ventricular (LV) pressure-volume (P-V) loops, wall stress, and the synchrony of LV segmental volume motions in patients with dilated cardiomyopathy. Background: Surgical LV volume reduction is under investigation as an alternative for, or bridge to, heart transplantation for patients with end-stage dilated cardiomyopathy. Methods: We measured P-V loops in eight patients with dil...
Abstract
Cited 37 times since 2000 (1.5 per year)
source: EuropePMC
Journal of cardiovascular electrophysiology,
Volume 11, Issue 11, 1 1 2000, Pages 1183-1192
Three-dimensional catheter positioning during radiofrequency ablation in patients: first application of a real-time position management system.
de Groot NM, Bootsma M, van der Velde ET, Schalij MJ
Introduction: Precise localization of target sites for radiofrequency catheter ablation (RFCA) of arrhythmias is hampered by the relative inaccuracy of X-ray localization procedures. This study evaluated the efficacy of a three-dimensional (3D) real-time position management system in guiding RFCA procedures in patients. Methods and results: Patients (n = 30, age 59+/-20 years) referred for ablation of either atrial flutter (n = 10), ventricular tachycardia (n = 15), or accessory pathways (n = 5)...
Abstract
Cited 1 times since 2000 (0 per year)
source: EuropePMC
Health & social work,
Volume 25, Issue 4, 1 1 2000, Pages 276-279
Suggestions to social workers for surviving in managed care.
Schneider AW, Hyer K, Luptak M
Abstract
Cited 102 times since 2000 (4.2 per year)
source: EuropePMC
Radiology,
Volume 217, Issue 2, 1 1 2000, Pages 572-575
Left ventricular function: correlation of quantitative gated SPECT and MR imaging over a wide range of values.
Bavelaar-Croon CD, Kayser HW, van der Wall EE, de Roos A, Dibbets-Schneider P, Pauwels EK, Germano G, Atsma DE
In 21 patients, the authors compared results with quantitative gated single photon emission computed tomography (SPECT) to results with magnetic resonance imaging in the assessment of left ventricular (LV) end-diastolic volume (LVEDV), end-systolic volume (LVESV), and ejection fraction (LVEF). Between the two methods, correlations were good for LVEF (r = 0.85), LVEDV (r = 0.94), and LVESV (r = 0.95). Quantitative gated SPECT can help determine LVEF, LVEDV, and LVESV.
Abstract
Cited 29 times since 2000 (1.2 per year)
source: EuropePMC
Circulation,
Volume 102, Issue 21, 1 1 2000, Pages 2650-2658
Anisotropic reentry in a perfused 2-dimensional layer of rabbit ventricular myocardium.
Schalij MJ, Boersma L, Huijberts M, Allessie MA
Background: Anisotropy creates nonuniformity in electrical propagation and may contribute to the occurrence of unidirectional conduction block and reentry. We describe the characteristics of reentrant tachycardia in a 2D layer of anisotropic ventricular myocardium. Methods and results: A Langendorff-perfused epicardial sheet (1.0+/-0.4 mm, n=35) was created by freezing the intramural layers of the rabbit left ventricle. Epicardial activation maps were constructed by use of different high-resolut...
Abstract
Cited 29 times since 2000 (1.2 per year)
source: EuropePMC
Pacing and clinical electrophysiology : PACE,
Volume 23, Issue 11 Pt 1, 1 1 2000, Pages 1638-1644
Reduction of radiation exposure in the cardiac electrophysiology laboratory.
Wittkampf FH, Wever EF, Vos K, Geleijns J, Schalij MJ, van der Tol J, Robles de Medina EO
The purpose of this study was to determine the effects of various protective measures on patient and operator radiation dose levels in catheter ablation procedures. Catheter ablation procedures are associated with significant radiation levels. The patient's skin and operator radiation levels were measured (1) at baseline, (2) after primary beam filtration by 0.3-mm copper sheet and 2-mm aluminium plate and implementation of the LocaLisa system, and (3) after reduction of the left anterior o...
Abstract
Cited 35 times since 2000 (1.4 per year)
source: EuropePMC
Journal of hypertension,
Volume 18, Issue 11, 1 1 2000, Pages 1635-1644
The importance of high-frequency paced breathing in spectral baroreflex sensitivity assessment.
Frederiks J, Swenne CA, TenVoorde BJ, Honzíková N, Levert JV, Maan AC, Schalij MJ, Bruschke AV
Objective: Computation of the low-frequency (LF) blood pressure variability (BPV) to heart rate variability (HRV) transfer-index is a common method to assess baroreflex sensitivity (BRS), tacitly assuming that all LF-HRV is caused by baroreflex feedback of LF-BPV. However, respiration may also cause HRV by mechanisms not involving the baroreflex. Application of narrow-band (controlled) high-frequency breathing would keep such non-baroreflex-mediated HRV best out of the LF band. Spontaneous breat...
Abstract
Cited 1 times since 2000 (0 per year)
source: EuropePMC
International journal of cardiac imaging,
Volume 16, Issue 5, 1 1 2000, Pages 359-364
Stentless bioprostheses have ideal haemodynamics, even in the small aortic root.
Baur LH, Houdas Y, Peels KH, Braun J, van Straten B, Prat A, Kappetein AP, Wolters-Geldoff M, van der Wall EE, Bruschke AV, Huysmans HA
Objective: To determine normal Doppler and 2D gradients and flow characteristics of the Freestyle stentless aortic bioprosthesis related to valve size. Background: The Freestyle stentless aortic bioprosthesis is one of the newer aortic xenografts. Only limited data are available of the echocardiographic flow characteristics during a mid-term follow-up period of this valve. Therefore valve performance related to valve size was measured during a follow-up period of two years. Methods: 175 consecut...
Abstract
Echocardiography (Mount Kisco, N.Y.),
Volume 17, Issue 7, 1 1 2000, Pages 625-629
Echocardiographic imaging of stentless aortic valve prostheses.
Baur LH, Peels K, Braun J, Kappetein AP, Bootsma M, Van Der Ploeg A, Sieders A, Hazekamp M, Van Der Wall EE, Huysmans HA
Unlabelled: Homografts and stentless xenografts are increasingly used in aortic valve surgery. Echocardiography technicians and cardiologists have to know what they will find when performing an echo-Doppler examination in patients who received a stentless valve. We therefore evaluated echocardiographic images of 74 patients who received a Freestyle stentless bioprosthesis with three techniques and a follow-up of 2 years in two high-volume hospitals. Of the patients studied, 81% were operated usi...
Abstract
Cited 6 times since 2000 (0.2 per year)
source: EuropePMC
The American journal of cardiology,
Volume 86, Issue 7, 1 1 2000, Pages 774-6, A6
Effect of simvastatin on restenosis after percutaneous transluminal angioplasty of femoropopliteal arterial obstruction.
Hagenaars T, Gussenhoven EJ, van Sambeek MR, Jukema JW, Kranendonk SE, Bom N
This retrospective observational intravascular ultrasound study evaluated whether simvastatin therapy limits lumen area reduction 1-year after percutaneous transluminal angioplasty (PTA) by reducing reactive plaque growth, reducing reactive vasoconstriction, or both. This study showed that plaque growth is a general response 1 year after PTA regardless of the use of simvastatin; simvastatin has the potential to induce positive vascular remodeling, thereby reducing the occurrence of restenosis.
Abstract
Cited 29 times since 2000 (1.2 per year)
source: EuropePMC
Circulation,
Volume 102, Issue 14, 1 1 2000, Pages 1629-1633
Lipoprotein lipase activity is associated with severity of angina pectoris. REGRESS Study Group.
Kastelein JJ, Jukema JW, Zwinderman AH, Clee S, van Boven AJ, Jansen H, Rabelink TJ, Peters RJ, Lie KI, Liu G, Bruschke AV, Hayden MR
Background: Raised triglyceride-rich lipoproteins significantly increase the risk for cardiovascular disease. Variation in the activity of the enzyme lipoprotein lipase (LPL), which is crucial in the removal of these lipoproteins, may therefore modulate this risk. Methods and results: Postheparin levels of LPL activity and mass were measured in a large cohort of male coronary artery disease patients participating in the Regression Growth Evaluation Statin Study (REGRESS), a lipid-lowering regres...
Abstract
Cited 38 times since 2000 (1.6 per year)
source: EuropePMC
The American journal of cardiology,
Volume 86, Issue 7, 1 1 2000, Pages 742-746
Pravastatin reduces restenosis two years after percutaneous transluminal coronary angioplasty (REGRESS trial).
Mulder HJ, Bal ET, Jukema JW, Zwinderman AH, Schalij MJ, van Boven AJ, Bruschke AV
The Regression Growth Evaluation Statin Study (REGRESS) is a placebo-controlled multicenter study designed to assess the effect of 2-year treatment with pravastatin on the progression and regression of angiographically documented coronary artery disease. One of the secondary end points was the occurrence of 2-year restenosis in the percutaneous transluminal coronary angioplasty (PTCA) block. We randomly assigned eligible patients to receive pravastatin 40 mg once daily or placebo. The end point...
Abstract
Cited 5 times since 2000 (0.2 per year)
source: EuropePMC
European journal of pharmacology,
Volume 403, Issue 1-2, 1 1 2000, Pages 99-109
In vivo evidence that EMD 57033 restores myocardial responsiveness to intracoronary Ca(2+) in stunned myocardium.
de Zeeuw S, Trines SA, Krams R, Duncker DJ, Verdouw PD
Despite ample in vitro evidence that myofilament Ca(2+)-responsiveness of stunned myocardium is decreased, in vivo data are inconclusive. Conversely, while Ca(2+)-sensitizing agents increase myofilament Ca(2+)-responsiveness in vitro, it has been questioned whether this also occurs in vivo. We therefore tested in open-chest anesthetized pigs whether EMD 57033 (the (+) enantiomer of 5-[1-(3,4-dimethoxybenzoyl)-1,2,3, 4-tetrahydro-6-quinolyl]-6-methyl-3,6-dihydro-2H-1,3, 4-thiadiazin-2-one) increa...
Abstract
Cited 1 times since 2000 (0 per year)
source: EuropePMC
American journal of physiology. Heart and circulatory physiology,
Volume 279, Issue 3, 1 1 2000, Pages H1264-73
Efficiency of energy transfer, but not external work, is maximized in stunned myocardium.
Trines SA, Slager CJ, van der Moer J, Verdouw PD, Krams R
There is no evidence regarding the effect of stunning on maximization of regional myocardial external work (EW) or efficiency of energy transfer (EET) in relation to regional afterload (end-systolic stress, sigma(es)). To that end, we studied these relationships in both the left anterior descending coronary artery (LADCA) and left circumflex coronary artery regions in anesthetized, open-chest pigs before and after LADCA stunning. In normal myocardium, EET vs. sigma(es) was maximal at 75.4 (69.7-...
Abstract
Cited 6 times since 2000 (0.2 per year)
source: EuropePMC
Thrombosis and haemostasis,
Volume 84, Issue 3, 1 1 2000, Pages 460-467
Adenoviral gene transfer of a u-PA receptor-binding plasmin inhibitor and green fluorescent protein: inhibition of migration and visualization of expression.
Lamfers ML, Wijnberg MJ, Grimbergen JM, Huisman LG, Aalders MC, Cohen FN, Verheijen JH, van Hinsbergh VW, Quax PH
Smooth muscle cell migration plays a role in the development of intimal hyperplasia. Given the established role of the plasminogen activation system in cell migration, an approach to therapy is to overexpress an inhibitor of plasmin. Therefore, an adenoviral vector was constructed encoding the hybrid protein ATF.BPTI, which contains the active domain of bovine pancreas trypsin inhibitor (BPTI), fused to ATF, the amino terminal fragment or receptor-binding domain of u-PA. Adenoviral vectors expre...
Abstract
Cited 54 times since 2000 (2.2 per year)
source: EuropePMC
The American journal of cardiology,
Volume 86, Issue 4, 1 1 2000, Pages 385-389
Heparin-coated Wiktor stents in human coronary arteries (MENTOR trial). MENTOR Trial Investigators.
Vrolix MC, Legrand VM, Reiber JH, Grollier G, Schalij MJ, Brunel P, Martinez-Elbal L, Gomez-Recio M, Bär FW, Bertrand ME, Colombo A, Brachman J
The purpose of this study was to determine the feasibility, safety, and efficacy of elective stenting with heparin-coated Wiktor stents in patients with coronary artery disease. In experimental studies, heparin coating has been shown to prevent subacute thrombosis and restenosis. Recently, a new method of heparin coating was developed, resulting in a more stable and predictable heparin layer on stent devices. This trial constitutes the first in-human use of this coating procedure, applied on the...
Abstract
Cited 8 times since 2000 (0.3 per year)
source: EuropePMC
Pacing and clinical electrophysiology : PACE,
Volume 23, Issue 8, 1 1 2000, Pages 1232-1238
No gender differences in pacemaker selection in patients undergoing their first implantation.
Roeters Van Lennep JE, Zwinderman AH, Roeters Van Lennep HW, Van Hemel NM, Schalij MJ, van der Wall EE
Recent studies have indicated that women were less likely to receive sophisticated pacemaker devices than men. These differences could not be fully explained by demographic and clinical variables. The purpose of the present study was to assess whether a gender related difference might exist in pacemaker mode selection in patients undergoing their first implantation in The Netherlands. Records of first implants (n = 39,217) collected from 1988 through 1997 covering 95% of all implantations in The...
Abstract
Cited 20 times since 2000 (0.8 per year)
source: EuropePMC
American journal of respiratory and critical care medicine,
Volume 162, Issue 2 Pt 1, 1 1 2000, Pages 374-379
Right ventricular function in respiratory distress syndrome and subsequent partial liquid ventilation. Homeometric autoregulation in the right ventricle of the newborn animal.
Lopes Cardozo RH, Steendijk P, Baan J, Brouwers HA, De Vroomen M, Van Bel F
Infant respiratory distress syndrome (IRDS) and subsequent partial liquid ventilation (PLV) cause increased pulmonary vascular resistance, thus raising afterload. In nine newborn lambs the effects of IRDS and subsequent PLV on right (RV) and left ventricular (LV) contractility and systolic pump function were assessed using indices derived from RV and LV pressure-volume relations, obtained by micromanometric and conductance catheters during transient inferior vena cava occlusion. Pulmonary functi...
Abstract
