ISSN:0009-7322    

出版商:OVID    

年代:1974

数据来源: OVID

ISSN:0009-7322    

出版商:OVID    

年代:1974

数据来源: OVID

ISSN:0009-7322    

出版商:OVID    

年代:1974

数据来源: OVID

ISSN:0009-7322    

出版商:OVID    

年代:1974

数据来源: OVID

ISSN:0009-7322    

出版商:OVID    

年代:1974

数据来源: OVID

ISSN:0009-7322    

出版商:OVID    

年代:1974

数据来源: OVID

摘要:

In a prospective, double-blind study, heart-reactive antibody in high titer was detected, using an indirect immunofluorescent technique, in the serum of patients in whom the postpericardiotomy syndrome developed after intrapericardial surgery. The syndrome occurred in 26 of 86 consecutive longterm survivors of such surgery, an incidence of 30%. Presence of antibody correlated closely with the clinical syndrome. Demonstration of this antiheart antibody in high titer appears to offer laboratory confirmation of the syndrome.

ISSN:0009-7322    

出版商:OVID    

年代:1974

数据来源: OVID

摘要:

Two hundred and five patients who received a total of 247 electrode systems-129 transvenous, 68 transmediastinal and 50 transthoracic-are compared after complete uniform two-year follow-up. The transvenous patients had low hospital morbidity (19%) and short hospital stays (75% ≤ 8 days) but a high incidence of electrode failure by 24 months (38%). The transmediastinal and transthoracic patients had more hospital complications (35% and 34%) and longer periods of hospitalization (57% and 70% > 8 days) but fewer instances of failure by 24 months (16% and 11%). Most transvenous electrode failures were secondary to dislodgement. Transmediastinal right epicardial electrodes had the unique problem of threshold elevation and failure between six and 12 months after implantation as well as a high incidence of sudden death in this same period. Although the high incidence of endocardial electrode instability dictates the need for an alternative approach to permanent pacing, the failure of the transmediastinal approach to significantly alter postoperative morbidity (as compared with transthoracic electrodes) and the incidence of threshold elevation remote from right ventricular implantation suggest that limitation of thoracotomy (via the transmediastinal approach) should not take precedence over left ventricular implantation. Development of electrodes which would provide more permanent low resistance fixation to right ventricular endocardium or epicardium may be necessary before the transthoracic approach can be abandoned.

ISSN:0009-7322    

出版商:OVID    

年代:1974

数据来源: OVID

摘要:

The effect of breathing 50 ppm of carbon monoxide for two hours versus compressed, purified air for two hours on intermittent claudication was evaluated in ten men in a double-blind study. The mean venous carboxyhemoglobin level insignificantly decreased from 1.12% to 0.90% after breathing compressed, purified air but significantly increased from 1.08% to 2.77% after breathing carbon monoxide (P< 0.001). The mean exercise time until the onset of intermittent claudication insignificantly increased from 169 sec to 173 sec after breathing compressed, purified air but significantly decreased from 174 sec to 144 sec after breathing carbon monoxide (P< 0.001). Breathing 50 ppm of carbon monoxide for 2 hr significantly aggravated intermittent claudication of the calf or thigh due to angiographically documented occlusive arterial disease.

ISSN:0009-7322    

出版商:OVID    

年代:1974

数据来源: OVID

摘要:

The echocardiographic features of endocardial cushion defects were defined in 28 patients. Two basic characteristics, common to both complete and incomplete forms of endocardial cushion defects, were found. First, the mitral valve excursion was not seen best in the usual location as defined by intraventricular landmarks. Secondly, the mitral valve echoes in cases where there are dense attachments of the mitral leaflet to the crest of the interventricular septum may be traced to the rightward and anterior border of the left ventricular outflow tract. This is the echocardiographic representation of the characteristic “goose-neck’ deformity seen angiographically.Two additional paterns were recognized in patients with complete atrioventricular (A-V) canal. In Pattern I, a large, single, A-V valve was found occupying a central location between the two ventricles. During diastole, the superior segment moved anteriorly into the right ventricle and the inferior segment posteriorly into the left ventricle. In Pattern II, a large single A-V valve moved from the left ventricle in systole into the right ventricle in diastole. This pattern was specific to patients with common A-V valve leaflets.

ISSN:0009-7322    

出版商:OVID    

年代:1974

数据来源: OVID