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Previous Volume 328:1117-1120 April 15, 1993 Number 15 Next

	Since this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.

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As is often the case, many therapies in medicine are prescribed on the basis of assumptions or logical deductions but without data to support their use. For example, in neurocardiogenic syncope, in which hypotension is associated with paradoxical bradycardia, heart block, or sinus arrest, one could argue that implantation of a pacemaker to prevent the bradycardia is a rational treatment¹. In this issue of the Journal, Sra et al.² say that it is not effective. In their study they maintained the heart rate at a level 20 percent above the resting level by means of cardiac pacing but did . . . [Full Text of this Article]

Mechanisms of Hypotension and Bradycardia in Neurocardiogenic Syncope

Upright-Tilt Testing

References

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