ISSN:0039-2499    

出版商:OVID    

年代:1986

数据来源: OVID

ISSN:0039-2499    

出版商:OVID    

年代:1986

数据来源: OVID

ISSN:0039-2499    

出版商:OVID    

年代:1986

数据来源: OVID

ISSN:0039-2499    

出版商:OVID    

年代:1986

数据来源: OVID

摘要:

We reviewed echocardiographic findings in patients aged 15 to 45 years with acute nonhemorrhagic cerebral infarction (NHCI). Among 132 patients with NHCI, 96 (72.7%) had M‐mode and twodimensional echocardiography, including contrast echocardiography with intravenous saline injection when clinically indicated. Echocardiograms were abnormal in 33 patients. Of these, 7 had other conditions that could cause NHCI. Echocardiography corroborated the clinical diagnosis of a cardiogenic source for cerebral infarction in 17 others. The other 9 had no other clues for cardiovascular disease. Potential etiologies of NHCI diagnosed by echocardiography in these 9 cases included: paradoxical embolism, 5 patients; right atrial myxoma, 1; rheumatic mitral valve vegetation, 1; myxomatous mitral valve (marantic endocarditis at postmortem), 1; and left atrial enlargement associated with decreased left ventricular function, 1. Routine echocardiography frequently conveys useful information in patients under age 45 with NHCI. In young patients with cerebral embolism of unknown etiology if routine M‐mode and two dimensional echocardiographic studies are normal, contrast echocardiographic studies should be performed to rule out intracardiac shunts and the possibility of paradoxical cerebral embolism.

ISSN:0039-2499    

出版商:OVID    

年代:1986

数据来源: OVID

摘要:

The ejection fraction (EF) of the left ventricle was measured by radionudide ventriculography In 64 patients during an acute cerebrovascuiar accident. Sixteen patients (12 with coronary artery disease) died within two weeks of the onset of symptoms and had only one EF measurement. In remaining 48 patients, the EF was also measured two weeks and three months after the acute event. The ejection fraction of the patient who died soon after the acute stroke (52 ± 18) was significantly lower than that of the patients who survived (64 ± 10) (p< 0.01).Of the patients who survived, 28 without history of coronary disease had an EF of 67 ± 10 during acute event. It was significantly higher than that measured after two weeks (60 ± 10) p < 0.01). In patients with history of chronic stable angina pectoris, the EF (59 ± 10) was significantly lower hi the first study compared to that measured hi the second (69 ± 10) (p< 0.02). Ten patients with no evidence ischemia but with a history of myocardial infarction had a higher EF (61 ±11) during the first study compared to the second (51 ± 11) (p< 0.05). In all patients there was no significant difference in the measurements between the second and the third study. It is suggested that the EF response of the ventride of the heart to the acute cerebrovascuiar accident is similar to that observed In a stress test. Lowering of the EF during the acute cerebrovascuiar accident in patients with ischemia may be explanation for the deleterious effect that stroke sometimes has on the heart. Low ejection fraction appears to be a significant risk factor for death soon after stroke.

ISSN:0039-2499    

出版商:OVID    

年代:1986

数据来源: OVID

摘要:

During 1968 consecutive percutaneous transluminal coronary angioplasty (PTCA) procedures, 4 patients (0.2%) suffered a focal central nervous system complication. Two patients had a hemisphere infarct, one a bralnstem infarct and one a hemisphere transient ischemic attack. Embolism was the likely mechanism in 3 cases; in 1 air was injected through the guiding catheter, and in 2 post‐coronary bypass cases the ascending aorta was “scraped” with the guiding catheter while searching for a graft ostium. In 1 case the event occurred after a successful PTCA during a period of hypotension. Neurologic complications are rare during PTCA but will occasionally occur as the procedure is performed more frequently.

ISSN:0039-2499    

出版商:OVID    

年代:1986

数据来源: OVID

摘要:

Embolism with brain infarction rarely complicates calcific aortic stenosis (CAS). We report a case with severe CAS where the patient experienced multiple embolic strokes immediately following retrograde heart catheterization. Calcific emboli in the cerebral arteries were demonstrated by computed tomography (CT).

ISSN:0039-2499    

出版商:OVID    

年代:1986

数据来源: OVID

摘要:

The incidence of embolic complications among 426 patients with initial paroxysmal atrial fibrillation (PAF) was analysed. A distinct clustering of emboli was seen at the time of onset of PAR After transition to chronic atrial fibrillation (CAF), which developed in 141 patients (33.1%), the Incidence of emboli was seen to rise to a new level several times higher than the incidence level for patients with PAF. Also in this group a distinct clustering of emboli was seen during the first year after transition to CAF.On this background it is suggested that patients with PAF may benefit from treatment with antiarrhythmic agents in order to prevent the development of CAF and that anticoagulants for stroke prevention seems especially desirable in atrial fibrillation (AF) of recent onset.

ISSN:0039-2499    

出版商:OVID    

年代:1986

数据来源: OVID

摘要:

In 48 patients dying within 15 days following a supra‐tentorial cerebral infarct, the presence of hemorrhagic infarction at autopsy was related to a cardiac embolic cause of the infarct, and to the cause of death. Hemorrhagic infarcts were more common among patients dying from brain herniation than among those dying from a non‐cerebral cause. Cardiac embolic strokes were more often hemorrhagic at autopsy than strokes without such cause; this could be explained by a significant higher rate of brain herniation and death after embolic stroke. On the other hand infarcts with extended hemorrhages more often tended to have a cardiac than a non‐cardiac cause. These data, together with earlier clinical findings suggest that autopsy studies are biased in relating hemorrhagic Infarction almost exclusively to a cardiac embolic cause of stroke, although cardiac emboli may produce more extended hemorrhages.

ISSN:0039-2499    

出版商:OVID    

年代:1986

数据来源: OVID