tailieunhanh - Ebook Dx/Rx: Sexual dysfunction in men and women – Part 2

(BQ) Part 2 book “Dx/Rx: Sexual dysfunction in men and women” has contents: Physiology of female sexual function, classification and pathogenesis of female sexual dysfunction, physical diagnosis and testing, medical therapies for female sexual dysfunction, and other contents. | S E C T I O N 2 Female Sexual Dysfunction 77 8/31/10 9:34 AM 78 8/31/10 9:34 AM C H A P T E R 7 Physiology of Female Sexual Function Chad P. Hubsher, MD 䡲 Adam Luchey, MD 䡲 Stanley Zaslau, MD, MBA, FACS ■ Introduction ■ ■ ■ Sexual function in women is a highly variable, multifaceted process involving several components: • Anatomical • Physiological • Psychological • Emotional • Interpersonal Given the complex nature of sexuality in females, little consensus currently exists on the definition of a “normal sexual response.” Although aspects of female sexual function, such as vaginal lubrication and orgasmic contractions, seem to be widespread in normal, sexually functioning women, the subjective or emotional aspects are highly individual. These aspects are subject to learning and cultural factors, as past experiences play an important role in shaping expectations regarding sexual response in women. ■ Female Sexual Response Cycle ■ ■ Over the past 45 years, several models have been proposed to aid in the understanding of the female sexual response cycle. These models provide a conceptual framework of the sequence of physiological events and psychological processes that comprise normal sexual response for most 79 79 8/31/10 9:34 AM 80 Chapter 7 women. However, to date, none of the proposed female sexual response models have been shown to be universally applicable. The Masters and Johnson (Four-Stage) Model ■ Masters and Johnson first characterized the female sexual response cycle in 1966 based on laboratory observations of approximately 700 men and ■ They proposed a model of female sexual response consisting of four successive phases, each of which has associated genital and extragenital responses (Figure ): • Excitement • Plateau • Orgasm • Resolution The Three-Stage Model ■ In 1974, Kaplan proposed a three-stage model that .