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PubMed1981

Computed tomography of the perineum.

The value of computed tomography (CT) in the assessment of pelvic malignancy is well established. However, the importance of scanning caudad to the symphysis pubis to include the perineum has not been emphasized. The CT anatomy of the perineum in the transverse, coronal, and sagittal planes planes in normal subjects and in cadaver specimens is reviewed, and experience in 22 patients with pelviperineal pathology is reported. Malignancies in 16 patients were of the cervix (seven), vulva (six), vagina (two), and a recurrent mesenchymoma (one). Six patients had abscesses; one of these had cellulitis and skin ulcers. CT clearly depicts the perineal anatomy and is the imaging method of choice for the evaluation of malignancies and abscesses originating from or extending into this anatomic space. failure to include the perineum in the CT scanning of the pelvis will result in underestimation of disease extent. Multiplanar CT display of pelviperineal anatomy has great potential application in clinical work when high resolution coronal and sagittal reconstruction of transverse scans becomes available.

Adult↗
PubMed2000

Total pelvic exenteration and reconstruction for locally invasive recurrent sarcoma of the perineum.

Extensive primary tumors and locally recurrent tumors of the pelvis or perineum are difficult to manage. We describe the techniques necessary to perform total pelvic exenteration with en bloc resection of the perineum and genitalia for treatment of recurrent sarcoma of the perineum. Wide excision of the sarcoma with negative margins can be achieved by resecting the inferior portion of the pubic symphysis. An absorbable mesh sling may be used to suspend the small bowel above the pelvis, facilitating postoperative radiation. A catheterizable continent urinary reservoir avoids the necessity of two stomas and improves quality of life. Adequate tissue coverage can be attained by myocutaneous gracilis flaps that promote wound healing.

Adult↗
PubMed2002

Traditional care of the perineum during birth. A prospective, randomized, multicenter study of 1,076 women.

OBJECTIVE: To investigate the influence of the traditional hands-on versus the innovative hands-poised method on the risk of perineal trauma during vaginal delivery and on neonatal outcomes. STUDY DESIGN: In a prospective, randomized, multicenter study, 1,161 of 1,505 women giving birth at the Departments of Obstetrics and Gynecology of the University Hospital of Vienna and Semmelweis Women's Hospital, Vienna, between February and September 1999, were randomized into the trial. In the hands-on method, the left hand of the midwife puts pressure on the infant's head, and the right hand is placed against the perineum. In the hands-poised method, the midwife guides the parturient through the birth without touching the perineum, prepared to apply light pressure on the infant's head. RESULTS: One hundred eighty-seven of 574 women (32.5%) in the hands-on group and 180 of 502 women (35.8%) in the hands-poised group experienced perineal tears (P = .5). Sixteen women (2.7%) treated with the hands-on method developed third-degree perineal tears as compared with five women (0.9%) treated with the hands-poised method (P < .05). In the hands-on group, 103 women (17.9%) underwent episiotomy as compared with 51 cases (10.1%) in the hands-poised group (P < .01). No significant differences in neonatal outcomes were observed between the two groups. CONCLUSION: Our data suggest that a policy of hands-poised care is more suitable for preserving the perineum during birth and is a safe and effective birthing alternative for women.

Adult↗
PubMed2005

Perineum push-up device to facilitate transabdominal suturing of the lower rectum.

Pressure on the perineum by the fist facilitates the placement of sutures into the rectal remnant, but put the assisting surgeon on an awkward and strenuous posture. The perineum push-up device to facilitate transabdominal suturing of the lower rectum was invented. The assisting surgeon can push up the perineum more comfortably with his abdominal wall or thigh. The device was tested in fifteen patients. The average distance that can be pushed up is 4.2 cm, which is a significant distance, facilitating in the maneuver of the distal rectal stump.

Anastomosis, Surgical↗
PubMed1978

[Anatomy of the anterior male perineum].

The central nucleus of the perineum. Having carefully studied the anatomy of the central nucleus of the perineum on 27 male pelvises, the authors discuss the fibromuscular nature of this structure which extends from the peritoneal cul-de-sac to the perineal fascia, between urogenital pathways in front and digestive pathways in back. The connections to all the pelvic-perineal organs are discussed. The middle perineal adoneurosis. A personal conception. The study of twenty seven male perineums has permitted the authors to formulate a personal conception of the anatomy of the middle perineal aponeurosis. It is made up of adjoining structures organized in front and in back of the urethrae; above all it includes a smooth fibromuscular part in back of this canal, whereas in front, it behaves as a vessel-carrying sheath, where the dorsal pack of the penis and the Santorini plexus pass.

Adult↗
PubMed1982

The pelvic floor musculature in the descending perineum syndrome.

We have studied 20 patients with the descending perineum syndrome, half of whom were incontinent of faeces. Objective criteria were established in 103 control subjects for determining the relationship of the perineum to the bony pelvis. The anal reflex latency was increased in the 10 patients in whom perineal descent was associated with faecal incontinence, but not in the 10 without incontinence. However, there was hypertrophy of the muscle fibers in external anal sphincter muscle biopsies in all the patients. Thus, abnormal degrees of perineal descent are associated with changes in the external anal sphincter muscle, consistent with damage to its nerve supply.

Adult↗
PubMed2004

[Differential diagnosis in descending perineum syndrome].

Clinical symptoms in descending perineum syndrome show considerable variations, ranging from obstructed defecation to combined fecal and urinary incontinence and including different types of prolapse. Differential diagnosis has to compete with this complexity. Common pelvic floor disorders associated with descending perineum are rectocele, rectal prolapse, enterocele, and sigmoidocele. Standardized diagnostic tools include detailed history and clinical examination with proctorectoscopy as well as anorectal manometry, endoanal ultrasound, defecography, and dynamic MR of the pelvic floor. The diagnosis and proposed therapy have to be developed within an interdisciplinary concept.

Chronic Disease↗
PubMed1989

Construction of a neovagina for patients with a flat perineum.

Vaginal dilatation affords an acceptable functional success rate for women with vaginal agenesis, provided there is an introitus with a pouch or dimple. In contrast, women with a flat perineum who lack labia majora, labia minora, and vaginal introitus have no alternative to development of a vagina-like orifice other than surgical vaginoplasty. This study addresses the anatomic and functional success rate of these women after undergoing modified McIndoe technique. Thirty-four patients with microphallus were assigned the female gender as the sex of rearing at the Johns Hopkins Hospital between 1951 and 1987. A majority of patients underwent surgical revision of the external genitalia and gonadectomy before 2 years of age. Family counseling was begun at birth. Of these patients, 15 (17 to 25 years old) who requested the ability to have sexual relations underwent modified McIndoe vaginoplasty. All 15 of these women have experienced satisfactory coitus. All but one patient have an adequate size vagina. Results of this group indicate that patients with ambiguous genitalia as a result of male hermaphroditism or microphallus can achieve functional success after vaginal creation with a modified McIndoe technique despite the presence of a flat perineum.

Coitus↗
PubMed1992

Does DeLee suction at the perineum prevent meconium aspiration syndrome?

OBJECTIVE: We attempted to determine the impact of "early" (before delivery of the chest) oronasopharyngeal DeLee suctioning at the perineum in the prevention of meconium aspiration syndrome and to confirm that meconium aspiration syndrome is a postnatal event. STUDY DESIGN: We compared infants with meconium-stained fluid who underwent "early" oronasopharyngeal DeLee suctioning with a similar group of infants whose airways were suctioned "late" (after chest delivery). Practicing obstetricians did not know the study was being conducted by the pediatric staff, and an independent observer documented whether obstetricians performed "early" or "late" oronasopharyngeal DeLee suctioning. Immediate postnatal tracheal suctioning was performed in both groups. The study was conducted in a private tertiary care center averaging 5800 deliveries annually. A consecutive sample of 438 infants with meconium-stained fluid was analyzed. Of these infants, 221 received "early" oronasopharyngeal DeLee suctioning, while 217 infants were suctioned "late". RESULTS: Of the 438 infants with meconium-stained fluid, meconium aspiration syndrome developed in 38 (9%). These infants had higher rates of fetal distress (i.e., abnormal fetal heart rates) and lower Apgar scores (< or = 6) than infants without meconium aspiration syndrome (58% vs 17% and 65% vs 13%, respectively; p < 0.001). Forty-five percent of the infants with meconium aspiration syndrome had renal failure during the first 20 hours of life. In spite of "early" oronasopharyngeal DeLee suctioning, 53% of the infants in this group had meconium below the vocal cords and meconium aspiration syndrome developed in 7%. The time of oronasopharyngeal DeLee suctioning did not affect the rate of meconium aspiration syndrome or the presence of meconium below the vocal cords. CONCLUSIONS: We concluded that "early" oronasopharyngeal DeLee suctioning at the perineum does not affect the rate of meconium aspiration syndrome. We speculate that meconium aspiration syndrome is predominantly an intrauterine event associated with fetal distress and that meconium in the airways is merely a "marker" of previous fetal hypoxia.

Chi-Square Distribution↗
PubMed1999

Transmission of afferent information from urinary bladder, urethra and perineum to periaqueductal gray of cat.

The micturition reflex pathway is a supraspinal pathway. Anatomical tracing evidence is compatible with an involvement of the periaqueductal gray (PAG) in the ascending limb of this reflex. We tested the involvement of the PAG in receiving urinary tract- or perineum-related information and attempted to characterize this ascending path in terms of what type of information is being conveyed. Electrical stimulation of the pelvic nerves, which carry afferent information from the urinary bladder, evoked maximum field potentials in the caudal third of the PAG, primarily in the dorsal part of the lateral PAG and in the ventrolateral PAG. Since the regions activated by pelvic nerve stimulation differed from those activated by stimulation of the sensory pudendal or superficial perineal nerves, it is possible that specific pathways for different nerve inputs to the PAG exist. Sacral spinal cord neurons ascending to the PAG were identified by antidromic activation and then tested for inputs from pelvic, sensory pudendal or superficial perineal nerves. Of 18 units identified, only five received inputs from any of the peripheral nerves tested and only two projecting neurons received a pelvic nerve input. Thus the PAG may receive inputs from bladder and perineum, but the small proportion of cells with direct projections to the PAG receiving inputs from our test nerves implies that the major part of this pathway is not directly related to lower urinary tract function.

Afferent Pathways↗
PubMed1997

Care of the perineum in the second stage of labour: a study of views and practices of Australian midwives.

OBJECTIVES: to seek the views of midwives on the practices related to the perineum in the second stage of labour; to identify predictors of their practices and to identify their actual practices in the second stage of labour, prior to a randomised trial of second stage perineal massage. PARTICIPANTS AND SETTING: independent midwives in South Australia and 194 midwives working in the delivery suites and birth centres of seven public hospitals in four states of Australia. DESIGN: midwives were surveyed using a questionnaire which sought their views on, and practices relating to, second stage perineal massage, delivery of the head and reasons for cutting an episiotomy. FINDINGS: one third of the respondents 'never' practised perineal massage in the second stage of labour, 43% were 'undecided' as to its value and 19% disagreed with the practice. Over half agreed that its use should be decided by the woman and her partner. When invited to select the five statements they most agreed with, and the five they most disagreed with, out of a possible 24, equal numbers (26%) were for and against the statement referring to such massage as helping to stretch the perineum and prevent tearing. More than half (55%) disagreed with the statement which predicted they would find the practice distasteful, while only 1.6% agreed with this statement. During delivery of the head, 71% of respondents attempted some form of flexion. There was 100% agreement that fetal distress almost always or frequently was an indication for cutting an episiotomy. CONCLUSIONS: there is little evidence from randomised trials to support many of the second stage practices, and further research will clarify those which are most effective. This sample of midwives demonstrated considerable variation in their views on, and practices in, the second stage of labour. Although one-fifth disagreed with the practice of second stage perineal massage, and 40% agreed that the midwife should decide, more than half (57%) believed it was a matter of choice for the woman and her partner. All were supportive of episiotomy use for fetal distress.

Female↗
PubMed1997

[Electrophysiologic studies in the descending perineum in women].

Seventy five female patients (mean age: 55 +/- 13 years) were included into the study. Electromyography of the perineum with study of the intramuscular activity of the external anal sphincter was done and measures of the sacral reflex latency were obtained by stimulation of the cavernous nerve of the clitoris, recording in the external anal sphincter muscle. Neurogenic syndromes of pudendal nerve either isolated or associated with muscular disorders have been shown to be correlated with descending perineum. In our study, we investigated whether a history of obstetrical or surgical interventions is related to the occurrence of this syndrome. We did not find any significant relationship.

Adult↗
PubMed2003

Neuroanatomy of the male urethra and perineum.

OBJECTIVE: To describe the topography of the perineal nerves from their pudendal origin to their course into the male genitalia, with specific attention on the course of the perineal nerve along the ventral penis, including branches into bulbospongiosus muscle and corpus spongiosum. MATERIALS AND METHODS: The study comprised 18 normal human fetal penile specimens at 17.5-38 weeks of gestation (determined by fetal heel-to-toe length). Specimens were fixed in formalin, embedded in paraffin wax and serially sectioned at 6 micro m. The penile specimens contained the whole penis from the glans to the crural bodies, beneath the pubic arch and the perineum up to the anal verge. Immunocytochemistry was assessed on selected sections with antibodies against the neuronal markers S-100 and nitric oxide synthase (nNOS). Three-dimensional computer reconstruction of serial sections allowed an in-depth analysis of the neuroanatomy of the fetal penis, perineum and surrounding structures. RESULTS: After the pudendal nerve leaves the pudendal canal it gives rise to the perineal nerve branches in the ischiorectal fossa. Perineal nerves travel alongside the ischiocavernous and bulbospongiosus muscles and before reaching the latter, nerve branches course into the bulbospongiosus muscle. During its pathway within this muscle, fine nerve fibres course into the corpus spongiosum by piercing through the junction of the muscle. At the penoscrotal area, the perineal nerves give branches to the scrotum, funnelling into the interscrotal septum. Perineal nerves continue their pathway over the ventral side of penis covering the ventral surface of corpus spongiosum. Branches of the dorsal nerve of the penis at the junction of corpus cavernosum and corpus spongiosum assemble into a network with the perineal nerves. All perineal nerves from their main trunk at the ischiorectal fossa until their interaction with dorsal nerve of penis at the base of penis were nNOS negative. After the interaction with the dorsal nerve of penis, they become nNOS positive. CONCLUSION: Integrating neuroanatomical knowledge about the perineal nerves and their communication with the dorsal nerve of penis should facilitate a strategic approach to reconstructive procedures on the penis. Special care should be taken at the junction between the corpora cavernosa and spongiosa, where the dorsal nerve joins the perineal nerve, and at the proximal bulbospongiosus muscle, thereby protecting the fine nerves piercing into the cavernosa spongiosa.

Humans↗
PubMed2002

Watering can perineum--a forgotten complication of gonorrhoea.

In the modern era of broad spectrum antibiotics, urethral fistulae (watering can perineum) is one of the forgotten sequelae of chronic gonococcal infection. We report a 20-year-old unmarried male with gonococcal urethritis and two sinuses in the scrotum (watering can perineum). The micturating and retrograde urethrogram revealed mucosal irregularity and extravasation of contrast medium at the junction of bulbous and membranous urethra. Recent worldwide emergence of multidrug resistant strains of gonococci give rise to alarm. In the present scenario of HIV pandemic, ineffective treatment of patient or partner with gonorrhoea may result in development of these complications.

Adult↗
PubMed1999

Effect of oral ciprofloxacin on bacterial flora of perineum, urethra, and lower urinary tract in men with spinal cord injury.

A study was performed in 25 men with spinal cord injuries undergoing intermittent catheterization whose urine had > or = 10(5) bacterial colonies/ml to determine efficacy of ciprofloxacin in eradicating susceptible organisms from urine, urethra, and perineum. Cultures were obtained prior to, during, and 5 to 7 days after administration of 500 mg twice daily for 10 days. Organisms in urine were also present in the urethra and/or perineum in 20 cases. Susceptible bacteria disappeared from urine in all subjects; but at follow-up 12 had cultures positive for ciprofloxacin-resistant Gram-positive cocci, including 1 with methicillin-resistant Staphylococcus aureus (MRSA), and 2 with ciprofloxacin-resistant Acinetobacter sp. Treatment significantly reduced Gram-negative bacilli in perinea and urethras, but ciprofloxacin-susceptible organisms were replaced by resistant staphylococci, including MRSA, enterococci, and Acinetobacter sp. We support use of ciprofloxacin for treatment of urinary tract infections in persons with spinal cord injury, but in view of supercolonization with resistant organisms, the drug should be reserved for symptomatic persons not likely to respond to other oral agents.

Administration, Oral↗
PubMed2002

V-Y fasciocutaneous pudendal thigh flap for repair of perineum and genital region after necrotizing fasciitis: modification and new indication.

Necrotizing fasciitis is an aggressive, deep-seated infection of the fascia and subcutaneous fat with necrosis of the overlying skin, and it is a toxin-mediated disease. The aim of this study was to review 13 cases of necrotizing fasciitis of the perineum and the external genitalia region with regard to the diagnosis, treatment, and methods of reconstruction of secondary defects. The study was performed from June 1997 to May 2001 and involved 11 men and 2 women who ranged in age from 35 to 67 years (mean age, 53 years). All patients presented to the plastic surgery unit with huge secondary defects of the urogenital region, upper thigh, and lower abdomen after being excised initially by general surgeons. Eight patients were treated with bilateral flaps, and the unilateral flap was used in 2 patients. The V-Y island fasciocutaneous flap, used to resurface the urogenital region after necrotizing fasciitis, is considered a new indication. The V-Y axial-pattern design of the flap is also considered a new modification, which enabled the flap to be advanced and tailored nicely in the midline. The idea of using the V-Y-plasty design is raised because the perineum has a pair of symmetrical anatomic structures. In addition, this procedure conserves tissue and the flap donor site is closed primarily without tension. Both aesthetic and functional results were satisfactory.

Adult↗
PubMed1983

Management of burn contractures of the perineum.

Burns of the perineum are rare but very disabling. The author's experience in managing six such cases, 3 males and 3 females, age 8 to 17 years, is discussed. These burns occurred following overspilling of kerosene onto trousers while lighting a stove or as a result of a stove explosion. The treatment is aimed at release of the scar contracture and restoration of genitals to their normal position. An attempt is made to provide full-thickness skin cover in front of pubis by wide undermining of lower abdominal skin and advancing it downward. If, however, the abdomen is scarred, the whole of the resultant raw area is covered with thick split-skin graft. Graft contracture is prevented by advising tightly fitting underwear incorporating a wide elastic band sited over the inguinal furrow between the thighs and perineum.

Adolescent↗
PubMed1998

A randomised controlled trial of care of the perineum during second stage of normal labour.

OBJECTIVE: To compare the effect of two methods of perineal management used during spontaneous vaginal delivery on the prevalence of perineal pain reported at 10 days after birth. DESIGN: Randomised controlled trial. SETTING: Two English maternity care units. SAMPLE: 5471 women who gave birth between December 1994 and December 1996. METHODS: At the end of the second stage of labour women were allocated to either the 'hands on' method, in which the midwife's hands put pressure on the baby's head and support ('guard') the perineum; lateral flexion is then used to facilitate delivery of the shoulders, or the 'hands poised' method, in which the midwife keeps her hands poised, not touching the head or perineum, allowing spontaneous delivery of the shoulders. MAIN OUTCOME MEASURE: Perineal pain in the previous 24 hours reported by women in self-administered questionnaire 10 days after birth. RESULTS: Questionnaires were completed by 97% of women at 10 days after birth. 910 (34.1%) women in the 'hands poised' group reported pain in the previous 24 hours compared with 823 (31.1%) in the 'hands on' group (RR 1.10, 95% CI 1.01 to 1.18: absolute difference 3%, 0.5% to 5%, P = 0.02). The rate of episiotomy was significantly lower in the 'hands poised' group (RR 0.79, 99% CI 0.65 to 0.96, P = 0.008) but the rate of manual removal of placenta was significantly higher (RR 1.69, 99% CI 1.02 to 2.78; P = 0.008). There were no other statistically significant differences detected between the two methods. CONCLUSION: The reduction in pain observed in the 'hands on' group was statistically significant and the difference detected potentially affects a substantial number of women. These results provide evidence to enable individual women and health professionals to decide which perineal management is preferable.

Adult↗