Limitations in the assessment of changes of cardiac output by Doppler echocardiography under various hemodynamic conditions.
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Adolescent↗
Biomedical subjects
M Brieda
Publications and source records attributed to M Brieda.
[A posttraumatic pseudoaneurysm of the radial artery. Its diagnostic assessment by duplex color Doppler].
A twenty-nine-year-old woman, one week after a traumatic skin laceration on the territory of the distal part of the radial artery, developed a pulsating mass suggesting a pseudoaneurysm of the radial artery. Using the duplex color Doppler echography, we clearly demonstrated the anatomical damage, the presence of the false lumen and the continuity of the vessel. These observations were of great assistance for the subsequent surgical treatment.
Adult↗
[ST segment elevation after elective electric cardioversion].
From a group of 142 patient with atrial fibrillation or atrial flutter treated with DC shock, we selected 5 cases who showed a marked ST segment elevation immediately after electrical cardioversion. Only two patients, who received high voltage DC shock (950 and 1220 Joules) revealed prolonged and significant increase of CPK values. Our data suggest that ST segment transitory elevation after DC shock should probably not be considered a sign of myocardial injury even though this could be the case when high voltage DC shocks are used.
Adult↗
[Equilibrium angioscintigraphic evaluation of sequential changes in right ventricle function in patients with lower myocardial infarct and ischemic co-involvement of the right ventricle: long-term study].
The purpose of this study was to define the sequential changes in global and regional right ventricular function, using equilibrium gated radionuclide angiography, following transmural inferior myocardial infarction (IMI) and associated ischemic right ventricular involvement. 24 patients with IMI underwent radionuclide angiography within 72 hours of onset of chest pain; subsequent studies were done at 13 +/- 5 days and at 6 +/- 2 months. Scintigraphic evidence of ischemic right ventricular involvement was defined by depression of right ventricular ejection fraction (less than 40%) and regional wall motion abnormalities (hypo-a-dyskinesia of right ventricular free wall). Significant improvement of global right ventricular ejection fraction was observed in 15 patients at the second study, and in 21 patients at the third study. Right ventricular regional wall motion showed similar improvement from the initial to the final studies. Significant changes in right ventricular function occurred without concurrent changes in global and regional left ventricular ejection fraction. We concluded that patients with IMI and ischemic right ventricular involvement show frequently improvement of global and regional right ventricular function over time. This changes tend to occur early and without significant modifications in left ventricular function. The good prognosis observed in our patients, despite the high incidence of in hospital complications, might be related to the improvement of right ventricular function.
Adult↗
[Fibrinolysis and hemorrhage after streptokinase in acute myocardial infarct].
The purpose of this study is to analyze the relationship between occurrence of hemorrhagic complications, kinetic of fibrinogen degradation-regeneration and the changes of prothrombin time (PT), partial thromboplastin time (PTT), after intravenous administration of Streptokinase (SK), 1.500.000 U., in acute myocardial infarction. 45 selected patients with acute myocardial infarction had pretreatment analysis and serial post-SK measurement of fibrinogen levels, PT, PTT (for 48 hours). Basal fibrinogen levels were 3.2 g/l and displayed significant depression for 18 hours (0.30-0.46 g/l) and normalization after 30 hours from SK infusion. Similar behaviour showed PT and PTT. Minor bleeding was identified in 25 patients. In bleeders mean fibrinogen levels, PT, PTT before and maximum changes after SK were not significantly different compared with non bleeders. We conclude that SK infusion produces important and prolonged changes of fibrinogen levels, PT, PTT; hemorrhagic risk is not related, however, to the extent of lytic state, but probably to pre-existent vascular derangement, predisposing to bleeding complications during fibrinolytic therapy. Therefore we believe to be prudent to delay the infusion of heparin for 12-18 hours after SK administration, when fibrinogen levels are beginning to increase.
Female↗