Role of the cervix in sexual response: evidence for and against

A typological approach to testing the evolutionary functions of human female orgasm

Building on previous work that identified different types of orgasm in women (King, Belsky, Mah, & Binik, 2011), the goal of the present study was to extend such typological work and determine whether female orgasmic variability tracked potentially evolutionarily salient sexual partner characteristics (e.g., those displaying possible immune-system compatibility). A total of 265 females completed an Internet survey about their orgasmic experience-achieved either with partners or alone. For partnered orgasms, they also provided details of partner characteristics and sexual behaviors. Latent class analysis revealed two orgasm types which were meaningfully distinguishable in terms of sensations and location-either centered on the surface of genitalia or deep inside. Deep orgasms were associated with internal sensations consistent with proposed functions of female orgasm in terms of differential sperm insuck. Such orgasms were associated with partners who were perceived as considerate, dominant, with a noticeably attractive smell, and as providing firm penetration. However, some hypothesized reproductively significant partner characteristics were not differentially associated with deep orgasms (i.e., muscularity, aggression, masculinity). Results were discussed and future research directions outlined. In particular, it is suggested that sexual passion between partners is a non-accidental component of sexual functioning and that this has too frequently been missing in sex research involving humans. Direct physiological measures of the results of female orgasm need to be undertaken. Additionally, the intriguing phenomenon of female ejaculation deserves scientific attention.

Hysterectomy improves sexual response? Addressing a crucial omission in the literature

The prevailing view in the literature is that hysterectomy improves the quality of life. This is based on claims that hysterectomy alleviates pain (dyspareunia and abnormal bleeding) and improves sexual response. Because hysterectomy requires cutting the sensory nerves that supply the cervix and uterus, it is surprising that the reports of deleterious effects on sexual response are so limited. However, almost all articles that we encountered report that some of the women in the studies claim that hysterectomy is detrimental to their sexual response. It is likely that the degree to which a woman's sexual response and pleasure are affected by hysterectomy depends not only on which nerves were severed by the surgery, but also the genital regions whose stimulation the woman enjoys for eliciting sexual response. Because clitoral sensation (via pudendal and genitofemoral nerves) should not be affected by hysterectomy, this surgery would not diminish sexual response in women who prefer clitoral stimulation. However, women whose preferred source of stimulation is vaginal or cervical would be more likely to experience a decrement in sensation and consequently sexual response after hysterectomy because the nerves that innervate those organs, that is, the pelvic, hypogastric, and vagus nerves, are more likely to be damaged or severed in the course of hysterectomy. However, all published reports of the effects of hysterectomy on sexual response that we encountered fail to specify the women's preferred sources of genital stimulation. As discussed in the present review, we believe that the critical lack of information as to women's preferred sources of genital stimulation is key to accounting for the discrepancies in the literature as to whether hysterectomy improves or attenuates sexual pleasure.

[The relationship between hysterectomy and sexual life according to the latest research]

Hysterectomy is one of the most frequent surgical interventions. Both specialists and lay people are interested in the following question: what kind of late psychosexual consequences does hysterectomy have? In the past years many publications showed a new aspect of the effects of hysterectomy on sexual life. The results of these prospective, randomized studies show that the late psychosexual changes do not primarily depend on the surgical method (vaginal, abdominal total or subtotal hysterectomy). The most significant predictive factor is the quality of sexual relationship before the operation. In the light of the evidence of the latest research, women can be reassured about the fact that hysterectomy, performed due to a benign disease, usually ameliorates the function of the organs in the small pelvis, i.e. positive change in sexual life can be expected. On the basis of the observations, this statement is valid for 2 years after the intervention. To analyze the effects after this period, further long-term studies are required. In this literature review the authors present the most significant study results published in the recent past.

Psychosocial effects of hysterectomy: literature review

OBJECTIVES

With the development of less invasive treatments, the suitability of hysterectomy as a treatment for benign symptoms is being reevaluated. This paper critically and comprehensively reviews the psychosocial outcomes of hysterectomy in areas of sexuality, pain, and psychological functioning.

METHODS

Medline, Pub Med, and PsychLit were searched for studies and reviews pertaining to the psychosocial outcomes of hysterectomy. Over 100 studies and reviews, in English, French, and German language, published in the past 30 years were included. Controversial theories and empirical evidence are discussed in the domains of sexuality, pain, and psychological well-being. Special attention is devoted to design, sampling, and measurement issues as well as different surgical approaches with regard to hysterectomy-oophorectomy.

RESULTS

While hysterectomy appears to reduce pain, there do not appear strong psychosexual or psychosocial effects. Nonetheless, there may be a subgroup of women (10-20%) who report negative psychosocial outcomes such as reduced sexual interest, arousal, and orgasm, as well as elevated depressive symptoms and impaired body image.

CONCLUSIONS

More research is necessary to establish which patients may benefit most and which may not. Directions for future research are discussed.

ORIGINAL RESEARCH—PATHOPHYSIOLOGY: Clinical Biologic Pathophysiologies of Women's Sexual Dysfunction

INTRODUCTION

Data concerning the biologic pathophysiology of desire, arousal, and orgasm in women are limited.

AIM

To gain knowledge of biologic pathophysiology of female sexual function. METHODS. To provide state-of-the-art knowledge concerning female sexual dysfunction, representing the opinions of seven experts from five countries developed in a consensus process over a 2-year period.

MAIN OUTCOME MEASURE

An International Consultation in alliance with key urological and sexual medicine societies convened over 200 multidisciplinary specialists from 60 countries into 17 consultation committees. The aims, goals and intentions of each committee were defined. Expert opinion was based on grading of evidence-based medical literature, extensive internal committee dialogue, open presentation, and debate.

RESULTS

Three critical physiologic requirements, including intact sex steroids, autonomic/somatic nerves, and arterial inflow/perfusion pressure to women's genital organs play fundamental roles in maintaining women's sexual function. Despite this, there are nominal data supporting a direct pathophysiologic involvement of abnormal sex steroid values, and/or damage/injury to neurologic and/or blood flow integrity in women with problems in sexual desire, arousal, and/or orgasm. This summary details the available literature concerning hormonal, neurologic, and vascular organic pathophysiologies of women's sexual dysfunctions.

CONCLUSIONS

Additional research on clinical pathophysiologies in women's sexual dysfunction is needed. This chapter encompasses data presented at the 2nd International Consultation on Sexual Medicine in Paris, France, June 28-July 1, 2003.