The impact of transvaginal, mesh-augmented level one apical repair on anorectal dysfunction due to pelvic organ prolapse.

INTRODUCTION AND HYPOTHESIS: The objective was to investigate the symptom prevalence of anorectal dysfunction (AD) in women with pelvic organ prolapse (POP) and whether symptom improvement can be achieved by pelvic floor surgery. METHODS: Secondary analysis of the Propel Study data from 277 women with POP stage II-IV regarding bothersome AD symptoms, which were assessed using the Pelvic Floor Distress Inventory (PFDI) questionnaire preoperatively, and 6, 12, and 24 months after transvaginal prolapse repair with Elevate anterior and posterior. RESULTS: Prevalence of AD was high in the study cohort (14.4-56.3%) and could be reduced significantly throughout a 2-year follow-up (cure rates 44.3-83.1%). AD symptoms decreased in a similar manner after posterior/apical fixation to the way they did after anterior/apical fixation (e.g., feeling of incomplete bowel emptying 66.7% to 25.5% vs 46.5% to 10.7% respectively). Hemorrhoids and loss of loose stool decreased even more after anterior/apical fixation than after posterior/apical fixation. Even though AD symptoms decreased significantly more in patients with POP stage III-IV, there was still a considerable improvement in patients with POP stage II (e.g., pain when passing stool 31.1 to 7.7% vs 21.4 to 0% respectively). Notably, even symptoms of hemorrhoids and rectal prolapse improved substantially (cure rates 44.2% and 70.1% respectively). CONCLUSIONS: Symptoms of AD were frequent in our study cohort, and they significantly improved after vaginal mesh-augmented sacrospinous prolapse repair with Elevate anterior and posterior throughout the follow-up period. Anterior/apical fixation showed results that were almost as good as those after posterior/apical fixation. Patients with POP stage II experienced considerable symptom improvement, but cure rates were significantly higher in patients with POP stage III-IV. Vaginal mesh-augmented prolapse repair with good apical fixation is efficacious in resolving AD symptoms with low de novo rates in women suffering of POP.

Colonic volvulus--an old problem with a new twist.

We present a case report involving an unusual type of volvulus. A 51-year-old man presented with an acute abdomen. He underwent emergency laparotomy at which we identified a volvulus involving his caecum to descending colon in continuity. We believe this to be first reported case of total colonic volvulus.

Limberg flap for pilonidal disease: the "no-protractor" approach, 3 steps to success.

We describe a simple system for marking up a patient for a Limberg flap for pilonidal disease treatment. The technique involves only the use of a ruler and produces a consistent marking for the flap. In our hands it has been used in over 120 cases with no failures of rotation or flap necrosis.

Temperature measurements of shock compressed liquid deuterium up to 230 GPa.

Pyrometric measurements of single-shock-compressed liquid deuterium reveal that shock front temperatures T increase from 0.47 to 4.4 eV as the pressure P increases from 31 to 230 GPa. Where deuterium becomes both conducting and highly compressible, 30< or =P< or =50 GPa, T is lower than most models predict and T<50 Gpa, where the optical reflectivity is saturated, there is an increase in the rate that T increases with P.

LIBS using dual- and ultra-short laser pulses.

Pre-ablation dual-pulse LIBS enhancement data for copper, brass and steel using ns laser excitation are reported. Although large enhancements are observed for all samples, the magnitude of the enhancement is matrix dependent. Whereas all of the dual-pulse studies used ns laser excitation we see interesting effects when using ps and fs laser excitation for single-pulse LIBS. LIBS spectra of copper using 1.3 ps and 140 fs laser pulses show much lower background signals compared to ns pulse excitation. Also, the atomic emission decays much more rapidly with time. Because of relatively low backgrounds when using ps and fs pulses, non-gated detection of LIBS is shown to be very effective. The plasma dissipates quickly enough using ps and fs laser pulses, that high pulse rates, up to 1,000 Hz, are effective for increasing the LIBS signal, for a given measurement time. Finally, a simple near-collinear dual-pulse fiber-optic LIBS probe is shown to be useful for enhanced LIBS measurements.

Frequency of digital rectal examination in children with chronic constipation.

OBJECTIVES: To determine the frequency of performance of digital rectal examination by primary care practitioners on children with chronic constipation and to assess its effect on therapy. PATIENTS AND METHODS: One hundred twenty-eight children referred for chronic constipation to the Division of Pediatric Gastroenterology at Schneider Children's Hospital, New Hyde Park, NY, as well as their parents were questioned as to whether a digital rectal examination was ever performed prior to referral. All children underwent subsequent digital rectal examination by a pediatric gastroenterologist and recommended treatment regimens were compared with pretreatment regimens. The patients evaluated were a mix of private-insurance and Medicaid patients referred by pediatricians in the general community. RESULTS: Ninety-eight (77%) of the children referred for chronic constipation were found to have never had a digital rectal examination performed prior to referral. Fifty-three (54%) of these children were found to have fecal impaction. Only 19 (21%) were found to have minimal to no stool retention on digital examination. Enema therapy had been infrequently used to "clean out" the colon in referred children. Seventy percent were treated with multiple enema therapy following digital rectal examination. Organic causes of constipation were identified in 3 patients. CONCLUSIONS: Digital rectal examination is often not performed in the examination of the child with chronic constipation. The digital examination can help differentiate functional constipation from an organic process and may alter the course of therapy.

Three-dimensional endoanal sonography in assessing anal canal injury.

BACKGROUND: Instrument design limits endosonography of the anal canal to the axial plane, with no capability for longitudinal imaging or measurement. Using three-dimensional reconstructions, the relationship between the radial and linear extent of an anal sphincter tear has been explored, and sex differences in anal canal and sphincter length have been established. METHODS: Three-dimensional reconstructions were performed in 20 controls and 24 patients with faecal incontinence found to have 25 external and five internal sphincter defects. The radial and linear extent of any sphincter tear was measured. In controls the length of the sphincters was compared with the total anal canal length, and the maximum and mean internal sphincter thickness was compared. RESULTS: The radial angle of an internal or external sphincter defect was significantly related to its length (R2 = 96.8 per cent and R2 = 84.4 per cent respectively; both P < 0.001). The anal canal was longer in men than in women (mean(s.d.) 32.6(5.3) versus 25.1(3.4) mm; P < 0.001). The internal anal sphincter was also longer in men (25.6(6.3) versus 19.8(4.0) mm; P < 0.02), but the mean internal sphincter length as a percentage of total anal canal length did not differ (78.3 versus 78.7 per cent; P not significant). The anterior external anal sphincter was longer in men than in women (32.6(5.3) versus 15.3(2.8) mm; P < 0.001), and formed a greater percentage of total anal canal length (100 versus 62.9 per cent; P < 0.001). CONCLUSION: Multiplanar imaging has revealed a direct relationship between the length of a sphincter tear and its radial extent as shown on axial scanning. Marked sex differences in sphincter configuration have been demonstrated. In women the shorter anterior sphincter length highlights the risk of complete sphincter disruption with extensive tears.

Intraobserver and interobserver agreement in anal endosonography.

BACKGROUND: The aim of this study was to determine intraobserver and interobserver agreement for sonographic measurements of anal canal structures using anal endosonography (AES), and to determine interobserver agreement for the diagnosis of anal sphincter disruption. METHODS: Fifty-one consecutive patients referred for AES for the investigation of possible sphincter abnormality were examined. Studies were reviewed by two observers who measured anal canal structures at defined levels and locations, and recorded an opinion on sphincter integrity. Repeated measurements made by each observer were compared to determine intraobserver agreement, and measurements and diagnoses were compared between observers to determine interobserver agreement. RESULTS: Intraobserver agreement was better than interobserver agreement for measurements of anal canal structures. Interobserver limits of agreement for external sphincter measurements spanned 5 mm, whereas those for the internal sphincter spanned 1.5 mm. Interobserver agreement for diagnosis of sphincter disruption and internal sphincter echogenicity was very good (kappa = 0.80 and 0.74 respectively). CONCLUSION: The limits of agreement for intraobserver and interobserver measurements of anal canal structures on AES have been defined. Interobserver assessment of sphincter disruption is very good.

Clinical, physiological, and radiological study of a new purpose-designed artificial bowel sphincter.

BACKGROUND: Studies of the use of artificial urinary sphincters for faecal incontinence have led to refinement and adaptation of such sphincters to the anatomy of the anal region. We aimed to test this new device. METHODS: Six women, median age 53 (range 32-58) years, who were unsuitable for sphincter repair, had an artificial bowel sphincter implanted as a one-stage procedure without colostomy cover. Clinical assessment, physiological testing, and endosonography were done before and after the operation. Plain radiography, three-dimensional endosonography, and magnetic-resonance imaging were done after the operation, to define its anatomical location. RESULTS: Median follow-up was 10 (range 5-13) months and the device was functional in five patients. In one patient, the device was removed after ulceration through the skin. Of the patients with intact devices, Wexner incontinence scores improved from a median of 19 (18-20) of 20 before the operation, to 3 (0-6) of 20 after the operation. Median anal pressure at rest significantly increased from 60 (range 30-80) cm H2O to 110 (100-120) cm H2O. Functional anal-canal length varied after the operation from 3.3 cm to 3.8 cm. There was no significant change in the maximum tolerated volume of the rectum (140 [80-230] vs 100 [75-250] mL), or rectal compliance (2.9 [2.8-6.0] cm H2O/mL vs 3.5 [2.3-7.3] cm H2O/mL). All the imaging techniques accurately located the implant relative to the anal canal and pelvic floor in each patient. INTERPRETATION: The new artificial bowel sphincter provided a good functional result in five of the six patients, the surgical procedure was straightforward, and the maximum resting anal pressure rose without affecting rectal function. The ease of visualisation of such implants in situ should aid simple management of complications, should they arise.

Parameters of the rectoanal inhibitory reflex in patients with idiopathic fecal incontinence and chronic constipation.

PURPOSE: The rectoanal inhibitory reflex is a response of the internal anal sphincter to rectal distention, reflecting the functional nature of the anal sampling mechanism of rectal discrimination. The aim of this study was to assess the parameters of the rectoanal inhibitory reflex in healthy volunteers and incontinent and symptomatically constipated patients. METHODS: The rectoanal inhibitory reflex was recorded in 42 patients using reproducible threshold volumes. Excitatory and inhibitory latencies, maximum excitatory and inhibitory pressures, amplitude, and slope of inhibition, slope and time of pressure recovery, and area under the inhibitory curve were estimated. Pudendal nerve terminal motor latency and endoanal magnetic resonance imaging were performed in all incontinent patients. RESULTS: Significant linear trends were found for most parameters at each sphincter level when analyzed. Recovery time and area under the inhibitory curve differed between the sphincter levels and patient groups, with the most rapid recovery occurring in the distal sphincter of incontinent patients (P < 0.001). These pressure findings were not accounted for by differences in excitation between patient groups. CONCLUSION: A coordinated response by the internal anal sphincter to rectal distention with recovery of anal pressure from the distal to the proximal sphincter is suggested. Continence may rely on the character of internal anal sphincter inhibition, and recovery and preoperative assessment of rectoanal inhibitory reflex parameters may be important for predicting functional result following low anastomosis.

Nitric oxide and inflammatory bowel disease: evidence for local intestinal production in children with active colonic disease.

BACKGROUND: Active colitis in patients with inflammatory bowel disease is associated with mucosal vasodilation, increased intestinal permeability and abnormal colonic motility. Nitric oxide is a messenger molecule with many functions, including regulation of local blood flow, vasomotor tone, and inflammation. Increased nitric oxide production and inducible nitric oxide synthase activity have been demonstrated in experimental models of colitis. This study was designed to determine the relationship between nitric oxide production and colonic inflammation in children with active colitis and in control subjects and whether expression of inducible nitric oxide synthase protein is demonstrable in the intestinal epithelium of these patients. METHODS: Nitrate + nitrite were measured in urine, stool, and plasma using the Griess assay. Expression of inducible nitric oxide synthase protein in intestinal tissue was determined by immunohistochemical localization. RESULTS: Urinary nitrate + nitrite levels were not significantly different in patients and control subjects. In contrast, stool and plasma nitrate + nitrite concentrations were significantly higher in children with inflammatory bowel disease compared with levels in control children (stool: 162.4 +/- 31.0 mumol/l versus 77.2 +/- 22.1 mumol/l; plasma: 65.2 +/- 9.9 mumol/l versus 38.1 +/- 6.6 mumol/L; p < 0.05). Stool nitrate + nitrite levels significantly correlated with plasma values. Immunohistochemical staining of colonic tissue from children with inflammatory bowel disease demonstrated inducible nitric oxide synthase protein located exclusively in epithelial cells. CONCLUSION: Increased nitric oxide production and enhanced intestinal epithelial cell expression of inducible nitric oxide synthase protein are associated with active colonic inflammation.

Esophageal dysmotility in children breast-fed by mothers with silicone breast implants. Long-term follow-up and response to treatment.

Our aims were to determine the long-term clinical and manometric follow-up of 11 children with previously documented esophageal dysmotility, who had been breast-fed by mothers with silicone breast implants, their response to prokinetic agents, and to analyze changes in macrophage activation. Seven of 11 children had subjective clinical improvement. Weight/ height ratios remained the same or improved in 9/11. Biopsies at follow-up endoscopy were either normal or demonstrated mild esophagitis in 8/10. LES and UES pressures and percent propagation were not significantly different at follow-up, while wave amplitude significantly increased. Following intravenous metoclopramide, LES pressure, percent propagation, and wave amplitude significantly increased while UES pressure was unchanged. Urinary neopterin significantly decreased at follow-up, while urinary nitrates were unchanged. Esophageal dysmotility is chronic in this group of children, suggesting persistent autonomic nervous system dysfunction. Prokinetic agents may be useful in long-term management. The decreasing urinary neopterin levels suggest that, ultimately, there may be improvement in esophageal motility.