ISSN:0363-8855    

出版商:OVID    

年代:2000

数据来源: OVID

ISSN:0363-8855    

出版商:OVID    

年代:2000

数据来源: OVID

ISSN:0363-8855    

出版商:OVID    

年代:2000

数据来源: OVID

ISSN:0363-8855    

出版商:OVID    

年代:2000

数据来源: OVID

ISSN:0363-8855    

出版商:OVID    

年代:2000

数据来源: OVID

ISSN:0363-8855    

出版商:OVID    

年代:2000

数据来源: OVID

摘要:

&NA;After plastic and reconstructive surgery, postoperative monitoring of transplanted tissue for early signs of is‐chemia is imperative. We have developed and evaluated in a clinical environment an operationally simple and accurate pH‐based ischemia monitoring system, to be used for postoperative monitoring of transplanted tissue over a four‐day period. However, long‐term pH monitoring produces signals contaminated with noise and artifacts of various origins, making clinical interpretation of these pH recordings difficult. The objective of this study is to analyze the noise and artifact components present in the signals, as well as to determine the optimal filtering parameters to extract and reject them.The noise components present in long‐term pH recordings were identified, extracted, analyzed, and grouped into four categories: motion artifacts, position artifacts, a “24‐hour biorhythm component,” and drift. Parameters were defined to characterize effectively each of the components by frequency, amplitude, and peak to peak slope. We concluded that only motion and position artifacts need to be rejected from the signal, for our ischemia monitoring system to be useful in the clinical environment. The “24 hour biorhythm component” and drift do not significantly affect the interpretation of the pH signals.

ISSN:0363-8855    

出版商:OVID    

年代:2000

数据来源: OVID

摘要:

&NA;The measurement of bioelectrical impedance in humans is a relatively new technique that is increasing in applications as well as its acceptance by the clinical community. Some of the reasons for this increase are technological as the developments in electronics have increased the number of commercial systems available. Other reasons are the low‐cost, ease of use and safety of the technique. This paper presents an overview of its clinical applications, differentiating them according to the bioelectrical impedance change rate. Although this is a widely used technique, there are still some problems and limitations that in some cases jeopardize its reliability. The future of the measurement of bioelectrical impedance as a clinical and routine diagnostic tool needs to be carefully analyzed and these limitations and their possible effects considered for each specific application.

ISSN:0363-8855    

出版商:OVID    

年代:2000

数据来源: OVID

摘要:

&NA;The Journal of Clinical Engineering conducted its fifteenth annual survey of the salaries paid to biomedical/clinical engineering and technology personnel in U.S. hospitals. This paper reports the salary and work responsibility data obtained from 384 professionals in relationship to: professional certification; region of the U.S.; teaching versus non‐teaching facilities; years of experience; education; union membership; and gender. Data are included on wage increases and job responsibilities. Data are as of 12/31/99 and are compared with data as of 12/31/98. The average BMET I had 5 years of experience and earned $31,700 ± $5,300 (nationwide mean ± standard deviation). The average BMET II had 9.3 years of experience and earned $38,000 ± $6,700. The average BMET III had 17.4 years of experience and earned $44,800 ± $6,700. The average BMET Specialist had 18.6 years of experience and earned $51,000 ± $8,100. The average BMET Supervisor had 16.4 years of experience and earned $49,900 ± $11,000. The average Clinical Engineer had 17 years of experience and earned $48,000 ± $8,500. The average CE Supervisor had 19 years of experience and earned $52,900 ± $11,000. The average Department Director/Manager had 19.2 years of experience and earned $59,500 ± $16,400.

ISSN:0363-8855    

出版商:OVID    

年代:2000

数据来源: OVID

ISSN:0363-8855    

出版商:OVID    

年代:2000

数据来源: OVID