摘要:

Working overseas provides the professional rewards of passing on your knowledge and skills to others and seeing it make an improvement - hopefully an improvement that lasts.

ISSN:0363-8855    

出版商:OVID    

年代:1996

数据来源: OVID

摘要:

Ongoing controversy regarding the hazards of exposure of healthcare workers to ribavirin aerosol led to the design and evaluation of aribavirin aerosol evacuation systemthat scavenges the excess ribavirin. An oxyhood was placed within a croupette oxygen and cool mist tent. The tent was placed under negative pressure, using the hospital wall suction. Air samples were taken to determine ambient air concentrations and patient exposure concentrations and were compared to airborne ribavirin concentrations that occurred during administration of ribavirin without an evacuation system. The ribavirin evacuation system reduced ribavirin ambient air concentrations from 54ug/m3(mean) to 11ug/m3(mean) without reducing patient exposure concentrations. The results suggest that the system evaluated is an efficient and inexpensive means of reducing incidental employee exposure to ribavirin aerosol.

ISSN:0363-8855    

出版商:OVID    

年代:1996

数据来源: OVID

摘要:

Sophisticated equipment often needs intensive technical resources to maintain its system availability. Service contracts can be an easy channel to outside technical resources. Usually, a service contract purchaser only sees its cost instead of its maintenance quality. A system's needs, however, depend on the trade-off between the cost paid and the quality received. If a clinical engineer can actively interpret and integrate the cause-effect consequences on the compiled service worksheets, those clues can serve as a criterion to justify the quality and the cost-effectiveness of a service contract. Through the analysis of the service labor consumed, the justification of the parts replaced, and the assessment of the “fit” to system availability, this paper provides a cost-effective tool for equipment management.

ISSN:0363-8855    

出版商:OVID    

年代:1996

数据来源: OVID

摘要:

An experimental analysis was carried out to evaluate the effects induced by a membrane oxygenator on the pressure exerted by a roller pump in a hydraulic circuit for extracorporeal circulation (ECC). The research was conducted with two catheter pressure transducers whose signals were gathered by means of an automatic data acquisition system. The tests were carried out using a blood substitute (EmagelTM) that shows density and viscosity values similar to those of the hemodiluted blood. An overall examination of the obtained results, with a circuit simulating an ECC system used in the operating room, allows a quantification of the noticeable reduction in amplitude and bandwidth of the pressure wave, measured in the aortic arch of the patient. A membrane oxygenator seriously limits any effort, in ECC, to reproduce a physiological wave in order to have a correct blood perfusion.

ISSN:0363-8855    

出版商:OVID    

年代:1996

数据来源: OVID

摘要:

A high-temperature Superconducting Quantum Interference Device (SQUID) was used to record the magnetocardiogram of both a healthy person and a patient suffering from attacks of ventricular tachycardia. The noise level of the nitrogen-cooled system is about four times higher than for a standard low-temperature device. For the signal-to-noise ratio, however, the performance difference is only a factor of two, because the thinner insulation of the nitrogen-cooled SQUID allows a smaller distance from the chest, where two-times-stronger heart-signals are recorded. After signal processing, it becomes possible to identify fractionated components in the QRS-complex of the arrhythmia patient, that is, to derive diagnostically relevant information from high-temperature SQUID measurements.

ISSN:0363-8855    

出版商:OVID    

年代:1996

数据来源: OVID