Pilot study of vaginal plethysmography in women treated with radiotherapy for gynecological cancer

The Evolution of the Female Sexual Disorder/Dysfunction Definitions, Nomenclature, and Classifications: A Review of DSM, ICSM, ISSWSH, and ICD

INTRODUCTION

The 2 most well-known classification systems that include sexual medicine diagnoses are the International Classification of Diseases and Statistics (ICD) and the Diagnostic and Statistical Manual of Mental Disorders (DSM). Sexual medicine experts from international societies representing an array of disciplines have revised and redefined female sexual dysfunctions (FSDs) to reflect current scientific evidence and the state of the art.

AIM

To summarize the evidence and interactive and chronological process by which sexual medicine societies' consensus groups developed the current nomenclature, classifications, and definitions for FSDs.

METHODS

We review the contributions and collaborations of the Fourth International Consultation in Sexual Medicine (ICSM), the International Society for the Study of Women's Sexual Health (ISSWSH), and the World Association of Sexual Health in conjunction with the World Health Organization.

MAIN OUTCOME MEASURES

The ICSM and ISSWSH diagnostic systems are contrasted with the DSM classification. We discuss innovations and strengths; relevant evidence regarding epidemiology, etiology, and risk factors; and key differences. We describe how sexual medicine expertise informed FSD codes in the ICD-11 classification.

RESULTS

ICSM and ISSWSH published evidence-based guidelines on the definitions, nomenclature, and diagnostic criteria for FSD that diverge from the DSM psychiatric compendia. These definitions and nomenclature recommend the separation of female sexual desire and arousal disorders, elaborate on subtypes of arousal problems, broaden the scope of sexual pain definitions, and provide a greater understanding of etiologies and risk factors for FSDs.

CONCLUSIONS

These collaborations among sexual medicine experts and their role in the ICD-11 development process provide confidence that the ICD-11 Sexual Dysfunction codes are based on current scientific evidence for diagnosing and coding FSDs in clinical settings worldwide, can serve as endpoints in clinical trials, and will provide specificity for treatment outcomes for FSD therapies. Parish SJ, Cottler-Casanova S, Clayton AH, et al. The Evolution of the Female Sexual Disorder/Dysfunction Definitions, Nomenclature, and Classifications: A Review of DSM, ICSM, ISSWSH, and ICD. Sex Med 2021;9:36-56.

A Controlled Study on Vaginal Blood Flow During Sexual Arousal Among Early-Stage Cervical Cancer Survivors Treated With Conventional Radical or Nerve-Sparing Surgery With or Without Radiotherapy

OBJECTIVE

Sexual problems among cervical cancer survivors may in part be caused by reduced vaginal blood flow due to damaged hypogastric nerves during radical hysterectomy with pelvic lymphadenectomy and/or by radiation-induced vaginal changes after pelvic radiotherapy. A nerve-sparing modification of radical hysterectomy (NSRH) may preserve vaginal blood flow. Vaginal blood flow during sexual arousal was compared between different treatment modalities.

METHODS

We investigated premenopausal women treated for early-stage cervical cancer with radical hysterectomy (n = 29), NSRH (n = 28), NSRH with radiotherapy (n = 14), and controls (n = 31). Genital arousal and subjective sexual arousal in response to sexual stimuli were measured using vaginal photoplethysmography and a questionnaire. Results were compared by using a between-study (treatment groups) by within-study (stimulus) design.

RESULTS

Participants were aged 29 to 51 years (mean, 42 years) and at 1 to 14 years (mean, 5 years) after treatment. Measured vaginal blood flow in women treated with NSRH was similar to controls. Women treated with radical hysterectomy had a significantly lower vaginal blood flow compared with controls overall and lower compared with the NSRH group during sexual stimulation. Women treated with radiotherapy had a vaginal blood flow intermediate between the other groups without significant differences. The erotic films were equally effective in enhancing subjective sexual arousal among treatment groups.

CONCLUSIONS

Cervical cancer treatment with radical hysterectomy disrupts the vaginal blood flow response, and this may be prevented by conducting an NSRH. Treatment with radiotherapy did not significantly impact vaginal blood flow, but further investigation is needed with a larger sample.

Agreement of self-reported and genital measures of sexual arousal in men and women: a meta-analysis

The assessment of sexual arousal in men and women informs theoretical studies of human sexuality and provides a method to assess and evaluate the treatment of sexual dysfunctions and paraphilias. Understanding measures of arousal is, therefore, paramount to further theoretical and practical advances in the study of human sexuality. In this meta-analysis, we review research to quantify the extent of agreement between self-reported and genital measures of sexual arousal, to determine if there is a gender difference in this agreement, and to identify theoretical and methodological moderators of subjective-genital agreement. We identified 132 peer- or academically-reviewed laboratory studies published between 1969 and 2007 reporting a correlation between self-reported and genital measures of sexual arousal, with total sample sizes of 2,505 women and 1,918 men. There was a statistically significant gender difference in the agreement between self-reported and genital measures, with men (r = .66) showing a greater degree of agreement than women (r = .26). Two methodological moderators of the gender difference in subjective-genital agreement were identified: stimulus variability and timing of the assessment of self-reported sexual arousal. The results have implications for assessment of sexual arousal, the nature of gender differences in sexual arousal, and models of sexual response.

Vaginal blood flow after radical hysterectomy with and without nerve sparing. A preliminary report

Radical hysterectomy with pelvic lymphadenectomy (RHL) for cervical cancer causes damage to the autonomic nerves, which are responsible for increased vaginal blood flow during sexual arousal. The aim of the study of which we now report preliminary data was to determine whether a nerve-sparing technique leads to an objectively less disturbed vaginal blood flow response during sexual stimulation. Photoplethysmographic assessment of vaginal pulse amplitude (VPA) during sexual stimulation by erotic films was performed. Subjective sexual arousal was assessed after each stimulus. Thirteen women after conventional RHL, 10 women after nerve-sparing RHL, and 14 healthy premenopausal women participated. Data were collected between January and August 2006. The main outcome measure was the logarithmically transformed mean VPA. To detect statistically significant differences in mean VPA levels between the three groups, a univariate analysis of variance was used. Mean VPA differed between the three groups (P= 0.014). The conventional group had a lower vaginal blood flow response than the control group (P= 0.016), which tended also to be lower than that of the nerve-sparing group (P= 0.097). These differences were critically dependent on baseline vaginal blood flow differences between the groups. The conventional group follows a vaginal blood flow pattern similar to postmenopausal women. Conventional RHL is associated with an overall disturbed vaginal blood flow response compared with healthy controls. Because it is not observed to the same extent after nerve-sparing RHL, it seems that the nerve-sparing technique leads to a better overall vaginal blood flow caused by less denervation of the vagina.

Oral contraceptive use and female genital arousal: methodological considerations

This study explored effects of oral contraceptive pill (OCP) use on physiological sexual arousal as measured by a vaginal photoplethysmograph. Sixteen women aged 18-29 viewed audiovisual neutral and erotic stimuli before and an average of 6 weeks following the onset of OCP use. Although subjective measures of sexual arousal, including perceptions of genital arousal, significantly increased in response to erotic stimuli both before and after OCP onset, physiological sexual arousal only increased before OCP use. A comparison of individual responses before and after OCP onset reveals a much higher degree of intrasubject variability after OCP onset. We discuss these findings as they relate to OCP use as a confounding methodological variable to consider in future investigations employing vaginal photoplethysmography.