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Psychosomatic Medicine 31:522-527 (1969)
© 1969 American Psychosomatic Society

A Physiological Measure of Preoperative Anxiety

JAMES G. L. WILLIAMS PHD1, JOHN R. JONES MD2, and BARBARA WILLIAMS 1

1 Psychophysiology Laboratories, Departments of Psychiatry, Surgery and Physiology, University of Nebraska Medical Center Omaha, Neb.
2 Section of Anesthesiology, Department of Surgery, University of Nebraska Medical Center Omaha, Neb.

A 2cc/min infusion of 2.5% thiopental sodium was administered to 10 female patients on the afternoon preceding, and again immediately before, operation. The dosages required to cause stabilization of the spontaneous skin conductance responses were found to correlate significantly both with IPAT Anxiety Scale Questionnaire scores and with the points of disappearance of the eyelid reflexes. Results showed the test-retest reliability to be significantly high, and it is concluded that this skin conductance anxiety test (SCAT) has unique value in providing a reliable, valid, and precisely quantitative index of patient anxiety in both general and psychiatric hospital situations.

Submitted on May 16, 1969
Revised on July 18, 1969




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