Compounds > technetium-tc-99m-pyrophosphate

technetium-tc-99m-pyrophosphate and Lung-Diseases--Obstructive

technetium-tc-99m-pyrophosphate has been researched along with Lung-Diseases--Obstructive* in 2 studies

Other Studies

2 other study(ies) available for technetium-tc-99m-pyrophosphate and Lung-Diseases--Obstructive

Article	Year
Right ventricular function at rest and during exercise in chronic obstructive pulmonary disease. Comparison of two radionuclide techniques. Chest, 1993, Volume: 103, Issue:1 Right ventricular function was assessed in 24 patients with COPD, at rest and during submaximal exercise, using both technetium-99m (99mTc) blood-pool and krypton-81m (81mKr) equilibrium ventriculography. Technetium-99m right ventricular ejection fraction (RVEF) at rest was lower than 81mKr RVEF (0.39 +/- 0.12 and 0.54 +/- 0.08, respectively; p < 0.001). During submaximal exercise, there was no increase in RVEF using either imaging technique. This observation contrasted with an increase in RVEF in a group of age-comparable normal subjects during modest submaximal exercise. An inability to obtain spatial separation of right heart structures using 99mTc imaging leads to a value for RVEF that is consistently lower than that measured using 81mKr ventriculography. Resting RVEF is well preserved at rest in most patients with COPD. In contrast to normal subjects, many show an inability to augment right ventricular function during exercise that may contribute to the reduced exercise capacity observed in these patients. Topics: Aged; Exercise Test; Female; Forced Expiratory Volume; Gated Blood-Pool Imaging; Heart Rate; Humans; Krypton Radioisotopes; Lung Diseases, Obstructive; Male; Middle Aged; Physical Exertion; Pulmonary Heart Disease; Reproducibility of Results; Rest; Stroke Volume; Technetium Tc 99m Pyrophosphate; Ventricular Function, Left; Ventricular Function, Right; Ventriculography, First-Pass; Vital Capacity	1993
[Central hemodynamic status and left ventricular contractile function in patients with chronic obstructive lung diseases and stable pulmonary hypertension (based on data from radionuclide study methods)]. Kardiologiia, 1987, Volume: 27, Issue:9 Systemic, central and intracardiac hemodynamics and left-ventricular contractility were studied radiocardiographically and radioventriculographically in 22 patients with stable pulmonary hypertension, developing in the presence of chronic obstructive pulmonary diseases. A tendency to increased circulating blood volume, significantly elevated end diastolic and end systolic indices, reduced total ejection fraction, and a tendency to decreased segmental ejection fractions were demonstrated. A significant reduction of the speed and percentage of left-ventricular myocardial circular fibre contraction is another evidence of incompetent left-ventricular contractility, in addition to the reduced ejection fraction. Topics: Adult; Aged; Bronchitis; Diphosphates; Female; Heart Ventricles; Hemodynamics; Humans; Hypertension, Pulmonary; Lung Diseases, Obstructive; Male; Middle Aged; Myocardial Contraction; Pulmonary Wedge Pressure; Radionuclide Imaging; Scintillation Counting; Technetium; Technetium Tc 99m Pyrophosphate	1987

Article

Year

Right ventricular function at rest and during exercise in chronic obstructive pulmonary disease. Comparison of two radionuclide techniques.

Chest, 1993, Volume: 103, Issue:1

Right ventricular function was assessed in 24 patients with COPD, at rest and during submaximal exercise, using both technetium-99m (99mTc) blood-pool and krypton-81m (81mKr) equilibrium ventriculography. Technetium-99m right ventricular ejection fraction (RVEF) at rest was lower than 81mKr RVEF (0.39 +/- 0.12 and 0.54 +/- 0.08, respectively; p < 0.001). During submaximal exercise, there was no increase in RVEF using either imaging technique. This observation contrasted with an increase in RVEF in a group of age-comparable normal subjects during modest submaximal exercise. An inability to obtain spatial separation of right heart structures using 99mTc imaging leads to a value for RVEF that is consistently lower than that measured using 81mKr ventriculography. Resting RVEF is well preserved at rest in most patients with COPD. In contrast to normal subjects, many show an inability to augment right ventricular function during exercise that may contribute to the reduced exercise capacity observed in these patients.

Topics: Aged; Exercise Test; Female; Forced Expiratory Volume; Gated Blood-Pool Imaging; Heart Rate; Humans; Krypton Radioisotopes; Lung Diseases, Obstructive; Male; Middle Aged; Physical Exertion; Pulmonary Heart Disease; Reproducibility of Results; Rest; Stroke Volume; Technetium Tc 99m Pyrophosphate; Ventricular Function, Left; Ventricular Function, Right; Ventriculography, First-Pass; Vital Capacity

1993

[Central hemodynamic status and left ventricular contractile function in patients with chronic obstructive lung diseases and stable pulmonary hypertension (based on data from radionuclide study methods)].

Kardiologiia, 1987, Volume: 27, Issue:9

Systemic, central and intracardiac hemodynamics and left-ventricular contractility were studied radiocardiographically and radioventriculographically in 22 patients with stable pulmonary hypertension, developing in the presence of chronic obstructive pulmonary diseases. A tendency to increased circulating blood volume, significantly elevated end diastolic and end systolic indices, reduced total ejection fraction, and a tendency to decreased segmental ejection fractions were demonstrated. A significant reduction of the speed and percentage of left-ventricular myocardial circular fibre contraction is another evidence of incompetent left-ventricular contractility, in addition to the reduced ejection fraction.

Topics: Adult; Aged; Bronchitis; Diphosphates; Female; Heart Ventricles; Hemodynamics; Humans; Hypertension, Pulmonary; Lung Diseases, Obstructive; Male; Middle Aged; Myocardial Contraction; Pulmonary Wedge Pressure; Radionuclide Imaging; Scintillation Counting; Technetium; Technetium Tc 99m Pyrophosphate

1987