Archive for the 'Pulmonary Disease' Category

20 Jan

Prediction of Pulmonary Arterial Pressure in Chronic Obstructive Pulmonary Disease by Radionuclide Ventriculography: Conclusion

In contrast, Marchandise et al found a correlation between the acceleration time measured by Doppler echocardiography and PAP in patients with COPD. In our study, the time between the onset and peak pulmonary flow velocity is reflected by the difference between time to peak ejection rate and pre-ejection period. This parameter has not allowed an […]

19 Jan

Prediction of Pulmonary Arterial Pressure in Chronic Obstructive Pulmonary Disease by Radionuclide Ventriculography: Discussion

The most commonly used radionuclide parameter is the RVEF. Indeed, correlations have been found between pulmonary arterial pressure and RVEF, but within both the normal and abnormal range, the variability of estimated pulmonary arterial pressure is important and small changes in RVEF may reflect large variations in pulmonary pressure. Therefore, more reliable radionuclide parameters have […]

12 Jan

Prediction of Pulmonary Arterial Pressure in Chronic Obstructive Pulmonary Disease by Radionuclide Ventriculography: Results

Study Protocol In group 1, Kr RVEF was measured at rest and correlated to the pulmonary hemodynamic measurements performed during the same week. In group 2, “”Tc RVEF and the other noninvasive parameters were correlated to pulmonary arterial pressures and resistances measured simultaneously. Statistics These consisted of linear, logarithmic and exponential correlations between noninvasive parameters […]

06 Jan

Prediction of Pulmonary Arterial Pressure in Chronic Obstructive Pulmonary Disease by Radionuclide Ventriculography: Material and Methods

Hemodynamic Determination A triple lumen thermodilution 7F Swan-Ganz catheter was introduced into the right internal jugular vein using the Seldinger technique, and advanced under constant pressure wave and fluoroscopic control in the right pulmonary artery. Pulmonary pressure was measured using a physiologic pressure transducer and recorded on a thermal writing recorder. The zero reference was […]

05 Jan

Prediction of Pulmonary Arterial Pressure in Chronic Obstructive Pulmonary Disease by Radionuclide Ventriculography

Chronic obstructive pulmonary disease is one of the chief causes of disability and death in Europe and in the United States. Pulmonary hypertension triggers the development of right ventricular hypertrophy which may lead to right ventricular failure with a high mortality rate. The measurement of PAP requires right heart catheterization. Although this technique is widely […]

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