Comparison of single-plane and biplane volume determination by two-dimensional echocardiography 1. Asymmetric model hearts*

Erbel, Raimund; Krebs, W.; Henn, G; Schweizer, P.; Richter, H. A.; Meyer, Jürgen; Effert, S

doi:10.1093/oxfordjournals.eurheartj.a061334

Cited by 87 publications

(25 citation statements)

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“…Four-and two-chamber apical views were recorded on VHS cassettes and sent to Conegliano Hospital, where two physicians with no knowledge of patients' clinical data examined them. LVEF determination was performed according to Simson's method, and the mean of the two measurements was used [13]. Technically unsatisfactory echocardiographic images (n=35 among diabetic patients, n=33 among non-diabetic patients) were discarded from the analysis.…”

Section: Methodsmentioning

confidence: 99%

Albumin excretion in diabetic patients in the setting of acute myocardial infarction: association with 3-year mortality

Berton¹,

Cordiano²,

Palmieri³

et al. 2004

Diabetologia

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Aims/hypothesis. Diabetes mellitus is associated with increased mortality in subjects with acute myocardial infarction (AMI). We aimed to estimate the risk of mortality in AMI patients with and without diabetes using the urinary albumin : creatinine ratio (ACR).Methods. This is a prospective study of 121 consecutive, non-selected diabetic AMI patients, 121 age-and sex-matched non-diabetic AMI patients and 61 diabetic non-AMI outpatients as control subjects. All data were obtained during the first 7 days of hospitalisation and each AMI patient was followed for a period of exactly 3 years. Baseline ACR RIA measurements were made on the 1st, 3rd and 7th days of admission. Results. Adjusted ACR values were significantly higher in the diabetic AMI patients than in the diabetic control outpatients (p<0.0001), and a significant difference was observed between the weekly ACR slopes for these two groups (p<0.0001). Microalbuminuria was more prevalent in the diabetic AMI patients than in the non-diabetic AMI patients on the 1st day (62% vs 46%, p=0.01) and 3rd day (41% vs 29%, p=0.04). Among the AMI patients with normoalbuminuria (ACR <30 µg/mg), the mortality rate was 11.6% for the patients without diabetes and 33.8% for those with diabetes (p=0.001). The mortality rate was much higher among the AMI patients with microalbuminuria (ACR ≥30 µg/mg) and similar for the diabetic (68.0%) and non-diabetic patients (74.3%). In a multivariable Cox model, ACR (p<0.0001) and diabetes status (p=0.01) were associated with adverse outcome even when several other clinical variables were included in the model. Furthermore, a negative interaction was found between diabetes and ACR (p=0.01). Conclusions/interpretation. Microalbuminuria frequently occurs in diabetic and non-diabetic AMI patients during the first 3 days of admission to hospital and can be used to identify subjects at high risk of mortality.

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Section: Methodsmentioning

confidence: 99%

Albumin excretion in diabetic patients in the setting of acute myocardial infarction: association with 3-year mortality

Berton¹,

Cordiano²,

Palmieri³

et al. 2004

Diabetologia

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“…The validity of the slice method has been confirmed in asymmetric model hearts for two-dimensional echocardiography and radiography. 14 The position of the echocardiographic transducer in relation to the left ventricle was evaluated with two methods ( fig. 2): (1) The angle between the axis of the axial echo beam and left ventricular long-axis was determined at end-diastole and end-systole.…”

Section: Calculationmentioning

confidence: 99%

Echoventriculography -- a simultaneous analysis of two-dimensional echocardiography and cineventriculography.

Erbel¹,

Schweizer²,

Lambertz³

et al. 1983

Circulation

193

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SUMMARY Two-dimensional echocardiography underestimates left ventricular volume compared with cineventriculography. To exclude the influence of difference in heart rate, blood pressure, respiration phases and any effect of the contrast material on left ventricular function, simultaneous studies of twodimensional echocardiography and cineventriculography-echoventriculography were performed in 46 patients. Apical two-dimensional echocardiograms in the right anterior oblique (RAO) equivalent view were recorded before and during cineventriculography in the 300 RAO projection. End-diastolic and end-systolic volumes (EDV and ESV) were calculated using a disc method with a semiautomatic computer system. The echo transducer position relative to the left ventricular apex and long axis was analyzed. For EDV determined by two-dimensional echocardiography and cineventriculography, the linear regression equation was radiologic methods.'4 Thus, patient-related problems could explain the systematic underestimation of left ventricular volume as determined by two-dimensional echocardiography. Differences in heart rate, blood pressure and respiration, and possible influences of contrast agents have been reported.4In this study we analyzed left ventricular volumes and ejection fractions from simultaneous recordings of two-dimensional echocardiograms in the apical right anterior oblique (RAO) equivalent view and cineventriculograms in the RAO plane, eliminating any perturbing influences on left ventricular volume. Methods PatientsThe study was performed in 46 patients, 39 males and seven females, who were undergoing catheterization for evaluation of clinically suspected coronary artery disease (table 1). The mean age (± SEM) was 51.2 + 6.9 years. Thirty-seven patients had significant coronary artery disease, nine showed features of primary congestive cardiomyopathy, two had arterial hypertension, four mitral regurgitation, one patient had mitral valve prolapse, one obstructive cardiomyopathy, and one aortic insufficiency. Three patients appeared to be normal. Fifteen of the 37 patients with coronary artery disease showed asynergy of the anterior wall and 13 asynergy of the posterior wall. CatheterizationThe left ventricle was catheterized retrogradely through a percutaneous puncture of the right femoral artery. The patients were fasting and not premedicat-

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“…We calculated a single-plane LV ejection fraction (EF) from a 4-chamber view by Simpson's method. 16 …”

Section: Echocardiographic Measurementsmentioning

confidence: 99%

Ventricular Rate Control by Selective Vagal Stimulation Is Superior to Rhythm Regularization by Atrioventricular Nodal Ablation and Pacing During Atrial Fibrillation

et al. 2002

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Background-Selective atrioventricular nodal (AVN) vagal stimulation (AVN-VS) has emerged as a novel strategy for ventricular rate (VR) control in atrial fibrillation (AF). Although AVN-VS preserves the physiological ventricular activation sequence, the resulting rate is slow but irregular. In contrast, AVN ablation with pacemaker implantation produces retrograde activation (starting at the apex), with regular ventricular rhythm. We tested the hypothesis that, at comparable levels of VR slowing, AVN-VS provides hemodynamic benefits similar to those of ablation with pacemaker implantation. Methods and Results-AVN-VS was delivered to the epicardial fat pad that projects parasympathetic nerve fibers to the AVN in 12 dogs during AF. A computer-controlled algorithm adjusted AVN-VS beat by beat to achieve a mean ventricular RR interval of 75%, 100%, 125%, or 150% of spontaneous sinus cycle length. The AVN was then ablated, and the right ventricular (RV) apex was paced either irregularly (i-RVP) using the RR intervals collected during AVN-VS or regularly (r-RVP) at the corresponding mean RR. The results indicated that all 3 strategies improved hemodynamics compared with AF. However, AVN-VS resulted in significantly better responses than either r-RVP or i-RVP. i-RVP resulted in worse hemodynamic responses than r-RVP. The differences among these modes became less significant when mean VR was slowed to 150% of sinus cycle length. Conclusions-AVN-VS can produce graded slowing of the VR during AF without destroying the AVN. It was hemodynamically superior to AVN ablation with either r-RVP or i-RVP, indicating that the benefits of preserving the physiological antegrade ventricular activation sequence outweigh the detrimental effect of irregularity. (Circulation.

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Comparison of single-plane and biplane volume determination by two-dimensional echocardiography 1. Asymmetric model hearts*

Cited by 87 publications

References 0 publications

Albumin excretion in diabetic patients in the setting of acute myocardial infarction: association with 3-year mortality

Albumin excretion in diabetic patients in the setting of acute myocardial infarction: association with 3-year mortality

Echoventriculography -- a simultaneous analysis of two-dimensional echocardiography and cineventriculography.

Ventricular Rate Control by Selective Vagal Stimulation Is Superior to Rhythm Regularization by Atrioventricular Nodal Ablation and Pacing During Atrial Fibrillation

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