Comparison of Rigiscan and Sleep Laboratory Nocturnal Penile Tumescence in the Diagnosis of Organic Impotence

Mark R. Licht, Ronald W Lewis, Peter C. Wollan, Cameron D. Harris

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Purpose: We evaluated the relative use of RigiScan* * Dacomed, Minneapolis, Minnesota. measurement of radial rigidity compared to sleep laboratory measurement of axial rigidity and trained observer determination of erectile function in the diagnosis of organic impotence. Materials and Methods: A total of 28 patients underwent simultaneous 2-night formal sleep laboratory nocturnal penile tumescence and RigiScan monitoring. Standard normal values for radial rigidity and axial rigidity were tested for accuracy in predicting normal nocturnal penile tumescence compared to trained observer determination of the adequacy of an erection for penetration. Results: RigiScan tip measurements correlated poorly with buckling pressure, while base measurements strongly correlated (p = 0.0005). Observer determination of a functional erection was strongly associated with tip (p = 0.002), base (p = 0.0005) and buckling pressure measurements (p = 0.0005). Using observer determination as the gold standard receiver operating curves were generated to select RigiScan base and buckling pressure measurements that predicted functional erections with the highest sensitivity and specificity. Conclusions: RigiScan is a useful tool for measuring nocturnal penile tumescence. However, base measurements are more accurate than tip measurements for evaluating erectile function. The currently accepted level of rigidity used to define a normal erection (70 percent or greater) overestimates organic erectile dysfunction.

Original languageEnglish (US)
Pages (from-to)1740-1743
Number of pages4
JournalThe Journal of Urology
Volume154
Issue number5
DOIs
StatePublished - Jan 1 1995

Fingerprint

Penile Erection
Erectile Dysfunction
Sleep
Pressure
Reference Values
Sensitivity and Specificity

ASJC Scopus subject areas

  • Urology

Cite this

Comparison of Rigiscan and Sleep Laboratory Nocturnal Penile Tumescence in the Diagnosis of Organic Impotence. / Licht, Mark R.; Lewis, Ronald W; Wollan, Peter C.; Harris, Cameron D.

In: The Journal of Urology, Vol. 154, No. 5, 01.01.1995, p. 1740-1743.

Research output: Contribution to journalArticle

Licht, Mark R. ; Lewis, Ronald W ; Wollan, Peter C. ; Harris, Cameron D. / Comparison of Rigiscan and Sleep Laboratory Nocturnal Penile Tumescence in the Diagnosis of Organic Impotence. In: The Journal of Urology. 1995 ; Vol. 154, No. 5. pp. 1740-1743.
@article{0e66bad384694ab493d2072f5648e803,
title = "Comparison of Rigiscan and Sleep Laboratory Nocturnal Penile Tumescence in the Diagnosis of Organic Impotence",
abstract = "Purpose: We evaluated the relative use of RigiScan* * Dacomed, Minneapolis, Minnesota. measurement of radial rigidity compared to sleep laboratory measurement of axial rigidity and trained observer determination of erectile function in the diagnosis of organic impotence. Materials and Methods: A total of 28 patients underwent simultaneous 2-night formal sleep laboratory nocturnal penile tumescence and RigiScan monitoring. Standard normal values for radial rigidity and axial rigidity were tested for accuracy in predicting normal nocturnal penile tumescence compared to trained observer determination of the adequacy of an erection for penetration. Results: RigiScan tip measurements correlated poorly with buckling pressure, while base measurements strongly correlated (p = 0.0005). Observer determination of a functional erection was strongly associated with tip (p = 0.002), base (p = 0.0005) and buckling pressure measurements (p = 0.0005). Using observer determination as the gold standard receiver operating curves were generated to select RigiScan base and buckling pressure measurements that predicted functional erections with the highest sensitivity and specificity. Conclusions: RigiScan is a useful tool for measuring nocturnal penile tumescence. However, base measurements are more accurate than tip measurements for evaluating erectile function. The currently accepted level of rigidity used to define a normal erection (70 percent or greater) overestimates organic erectile dysfunction.",
author = "Licht, {Mark R.} and Lewis, {Ronald W} and Wollan, {Peter C.} and Harris, {Cameron D.}",
year = "1995",
month = "1",
day = "1",
doi = "10.1016/S0022-5347(01)66773-9",
language = "English (US)",
volume = "154",
pages = "1740--1743",
journal = "Journal of Urology",
issn = "0022-5347",
publisher = "Elsevier Inc.",
number = "5",

}

TY - JOUR

T1 - Comparison of Rigiscan and Sleep Laboratory Nocturnal Penile Tumescence in the Diagnosis of Organic Impotence

AU - Licht, Mark R.

AU - Lewis, Ronald W

AU - Wollan, Peter C.

AU - Harris, Cameron D.

PY - 1995/1/1

Y1 - 1995/1/1

N2 - Purpose: We evaluated the relative use of RigiScan* * Dacomed, Minneapolis, Minnesota. measurement of radial rigidity compared to sleep laboratory measurement of axial rigidity and trained observer determination of erectile function in the diagnosis of organic impotence. Materials and Methods: A total of 28 patients underwent simultaneous 2-night formal sleep laboratory nocturnal penile tumescence and RigiScan monitoring. Standard normal values for radial rigidity and axial rigidity were tested for accuracy in predicting normal nocturnal penile tumescence compared to trained observer determination of the adequacy of an erection for penetration. Results: RigiScan tip measurements correlated poorly with buckling pressure, while base measurements strongly correlated (p = 0.0005). Observer determination of a functional erection was strongly associated with tip (p = 0.002), base (p = 0.0005) and buckling pressure measurements (p = 0.0005). Using observer determination as the gold standard receiver operating curves were generated to select RigiScan base and buckling pressure measurements that predicted functional erections with the highest sensitivity and specificity. Conclusions: RigiScan is a useful tool for measuring nocturnal penile tumescence. However, base measurements are more accurate than tip measurements for evaluating erectile function. The currently accepted level of rigidity used to define a normal erection (70 percent or greater) overestimates organic erectile dysfunction.

AB - Purpose: We evaluated the relative use of RigiScan* * Dacomed, Minneapolis, Minnesota. measurement of radial rigidity compared to sleep laboratory measurement of axial rigidity and trained observer determination of erectile function in the diagnosis of organic impotence. Materials and Methods: A total of 28 patients underwent simultaneous 2-night formal sleep laboratory nocturnal penile tumescence and RigiScan monitoring. Standard normal values for radial rigidity and axial rigidity were tested for accuracy in predicting normal nocturnal penile tumescence compared to trained observer determination of the adequacy of an erection for penetration. Results: RigiScan tip measurements correlated poorly with buckling pressure, while base measurements strongly correlated (p = 0.0005). Observer determination of a functional erection was strongly associated with tip (p = 0.002), base (p = 0.0005) and buckling pressure measurements (p = 0.0005). Using observer determination as the gold standard receiver operating curves were generated to select RigiScan base and buckling pressure measurements that predicted functional erections with the highest sensitivity and specificity. Conclusions: RigiScan is a useful tool for measuring nocturnal penile tumescence. However, base measurements are more accurate than tip measurements for evaluating erectile function. The currently accepted level of rigidity used to define a normal erection (70 percent or greater) overestimates organic erectile dysfunction.

UR - http://www.scopus.com/inward/record.url?scp=0028832303&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028832303&partnerID=8YFLogxK

U2 - 10.1016/S0022-5347(01)66773-9

DO - 10.1016/S0022-5347(01)66773-9

M3 - Article

VL - 154

SP - 1740

EP - 1743

JO - Journal of Urology

JF - Journal of Urology

SN - 0022-5347

IS - 5

ER -