ISSN:0009-7322    

出版商:OVID    

年代:1965

数据来源: OVID

摘要:

The Q-1 interval has been studied and plotted against cycle length (preceding R-R interval) in 41 patients with atrial fibrillation. Employed in such a manner, the Q-1 measurement is a useful adjunct in the study ofatrial fibrillation when mitral stenosis is present or suspected. In patients with mitral stenosis, the usual finding was an inverse relationship between the Q-1 interval and the preceding cycle length, i.e., as the cycle length increased, the Q-1 interval decreased. Severe degrees of stenosis appeared to cause characteristic variation of the Q-1 interval even at relatively long cycle lengths, reflecting the longer persisting pressure gradient across the mitral valve. In the absence of mitral stenosis, there generally was no such Q-1 variation, particularly with cycle lengths of longer than 0.6 second.

ISSN:0009-7322    

出版商:OVID    

年代:1965

数据来源: OVID

ISSN:0009-7322    

出版商:OVID    

年代:1965

数据来源: OVID

ISSN:0009-7322    

出版商:OVID    

年代:1965

数据来源: OVID

摘要:

This report describes a 45-year-old man who developed acute bacterial endocarditis involving the aortic valve due to Klebsiella type 19. Consequent to the infection the patient developed aortic insufficiency and congestive heart failure. The patient failed to respond adequately to antibiotic therapy alone and rapid clinical deterioration required that the aortic valve be replaced despite the presence of active infection. Excision of the aortic valve appears to have removed the site of infection and replacement with a Starr prosthesis has corrected the aortic insufficiency. The patient has been followed for 15 months since the operative procedure, during which time he has returned to his work as a bricklayer. The encouraging result obtained in this patient suggests that in selected instances, valve excision and replacement under antibiotic coverage provide a possible therapeutic approach to certain difficult cases of active bacterial endocarditis.

ISSN:0009-7322    

出版商:OVID    

年代:1965

数据来源: OVID

摘要:

In summary, hyperbaric oxygenation produces remarkable physiologic increases in oxygen transport to body tissues. However, potential benefit from hyperoxygenation in the treatment of ischemic disease appears dependent upon the presence of a partially intact capillary circulation. Improved means for prevention of oxygen toxicity and better technics of oxygen delivery to specific sites are required, if hyperbaric oxygenation is to fulfill present hopes for therapeutic application.

ISSN:0009-7322    

出版商:OVID    

年代:1965

数据来源: OVID

ISSN:0009-7322    

出版商:OVID    

年代:1965

数据来源: OVID