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IEEE Engineering in Medicine and Biology Magazine

Issue 2 • Date June 1990

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Displaying Results 1 - 13 of 13
  • Historical highlights in cardiac pacing

    Publication Year: 1990, Page(s):12 - 18
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (825 KB)

    The benchmarks in cardiac pacing are identified, beginning with F. Steiner (1871), who rhythmically stimulated the chloroform-arrested hearts of 3 horses, 1 donkey, 10 dogs, 14 cats, and 8 rabbits. The chloroform-arrested heart in human subjects was paced by T. Greene in the following year (1872) in the UK. In 1882, H. Ziemssen in Germany applied cardiac pacing to a 42-year old woman who had a lar... View full abstract»

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  • Early development of defibrillation devices

    Publication Year: 1990, Page(s):19 - 24
    Cited by:  Papers (4)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (887 KB)

    The recognition of ventricular fibrillation and the development of defibrillation devices are recounted, and recent advances are described. Early experiences with and studies of cardiac arrest are discussed. Transthoracic defibrillation, which was first applied successfully in 1947, is reviewed, and significant research is summarized. The development and present state of the implanted defibrillato... View full abstract»

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  • The influence of shock waveforms on defibrillation efficacy

    Publication Year: 1990, Page(s):25 - 27
    Cited by:  Papers (7)  |  Patents (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (381 KB)

    The early use of AC waveforms for ventricular defibrillation is briefly recounted. Research on the efficacy of damped sinusoidal, truncated, and biphasic waveforms is reviewed. It is noted that damped sinusoidal and monophasic truncated exponential waveforms have been used successfully for decades in clinical settings and the further improvements can be made by altering the applied waveforms. Stud... View full abstract»

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  • Automatic functions in cardiac pacing: optimization of device and patient therapy

    Publication Year: 1990, Page(s):28 - 31
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (526 KB)

    An overview of advances is presented. The focus is on automatic functions that have been developed to monitor the patient continuously and readjust the postventricular atrial refractory period, the atrioventricular (AV) delay, the ventricular refractory period, and the pacemaker stimulus intensity. The advent of automatic algorithms for the postventricular atrial refractory period may have broaden... View full abstract»

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  • Concepts of rate responsive pacing

    Publication Year: 1990, Page(s):32 - 35
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    Various concepts for measuring (by means of biosensors incorporated into pacemakers) biologic parameters to determine the appropriate pacing rate are reviewed. They are pH, stimulus-to-T-wave interval, blood temperature, intercardiac blood pressure change, venous oxygen saturation, intercardiac impedance (stroke volume, ejection rate, preejection interval), thoracic impedance (respiratory rate, mi... View full abstract»

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  • Tachycardia control with cardiac pacemakers

    Publication Year: 1990, Page(s):36 - 39
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (469 KB)

    Techniques used to treat tachyarrhythmias with brief electrical impulses are described. The disease process is described, identifying the prevention of one of the three conditions required for reentry (which provides the mechanism for most electrically convertible rhythms) as the basis for therapy. The risk of inducing fibrillation is discussed. The four major pacing techniques used to treat tachy... View full abstract»

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  • Tachycardia recognition algorithms for implantable systems

    Publication Year: 1990, Page(s):40 - 42
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (357 KB)

    The detection algorithm of current antitachycardia pacing systems incorporates derivatives of heart rate as the only objective parameter used for recognition. Present pacing systems use one or more rate-related parameters: (1) rate cutoff, (2) sudden onset, (3) rate stability, and (4) sustained high rate. Recently, the development of antitachycardia systems has focused on combining the four detect... View full abstract»

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  • Implantable pacing lead technology

    Publication Year: 1990, Page(s):43 - 49
    Cited by:  Papers (2)  |  Patents (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (917 KB)

    Lead technology is reviewed, beginning with the first known permanent implant and continuing through today's state-of-the-art implant. Nondislodging transvenous leads and epimyocardial leads (sutureless, screw-in leads) are described. Conductors, insulation, and electrodes are discussed. The emphasis today appears to be on improving carbon, screw-in, porous, platinized and steroid eluting electrod... View full abstract»

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  • Technologies and health care in the 21st century

    Publication Year: 1990, Page(s):50 - 52
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (351 KB)

    The factors shaping the nature and scope of health care in the 21st century are examined. Included are the technically driven infusion of new and innovative research and clinical tools; the diversity and capability of modern imaging methods; the predominance of diagnostic capabilities over effective therapy in clinical medicine; the focus of basic research on engineering issues such as instrumenta... View full abstract»

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  • Legal and ethical issues in the regulation and development of engineering achievements in medical technology. II

    Publication Year: 1990, Page(s):53 - 57
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (692 KB)

    For pt.I see ibid., vol.9, no.2, p.79-81 (1990). The ethical issues raised by the fact that patients/subjects are less protected in non-investigational-device-exemption (non-IDE) use of unapproved medical devices than in IDE use are examined. Practice, research, and nonvalidated practice, an intervention that falls into the region between pure practice and pure research, are defined and examined w... View full abstract»

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  • The CDRH Helix-I: a physical evaluation

    Publication Year: 1990, Page(s):58 - 64
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (607 KB)

    The use of a resonant helical coil with predominantly axial electric fields for regional hyperthermia in the abdomen and pelvis is addressed. The Helix-I applicator, which consists of a three-turn, 36-cm-long, oval-wound helical coil measuring 60 and 43 cm along its major and minor axes, respectively, is described, and specific absorption rate (SAR) measurements for the device are reported. Measur... View full abstract»

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  • Engineering and the law-employment obligations. I. Duties of an employee to his employer

    Publication Year: 1990, Page(s):72 - 73
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    Problems that arise in connection with duties to the current employer(s) are discussed. Current employment law evolved from the feudal relationship between lords and peasants. An employee has a fiduciary duty toward his employer; this is a common law duty deriving its name from the duty of fides, or fidelity, between the master and the servant. In the case of a scientist or engineer employed to co... View full abstract»

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  • The retrospectroscope-the invention of the rechargeable cardiac pacemaker: vignette #9

    Publication Year: 1990, Page(s):77 - 78
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB)

    The idea for a rechargeable cardiac pacemaker came to the author in the late 1960s after reading an advertisement stating that a company's batteries were so good they would last two years in a heart pacemaker. This meant that pacemaker patients would have to undergo surgery for their replacement frequently. Having worked on the development of hermetically sealed, nickel-cadmium batteries that coul... View full abstract»

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Aims & Scope

IEEE Engineering in Medicine and Biology Magazine contains articles on current technologies and methods used in biomedical and clinical engineering.

 

This Magazine ceased publication in 2010. The current retitled publication is IEEE Pulse.

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