Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0010200 (cough)
 23,843 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The author endeavours to detail the technical modalities which can be used to avoid uncertainty in urodynamic sonography, and to obtain easily reproducible quality imaging. The 5 major techniques (transparietal, transperineal, introital, endovaginal and endorectal) are compared. The artifacts generated are described. A choice between these different techniques is performed as a function of the methodological advantages specific to each of them and the clinical applications contemplated by the sonographer. The characteristics of the "ideal" equipment are defined to help the sonographer-to-be to choose his or her equipment with full awareness of the facts (characteristics of the probe, emission frequency, settings by the sonographer, automatic image freeze during coughing). The methodology is described in detail and widely illustrated: position of the patient, choice of the section plane, choice of the reference system, location of the urethra, and definition of the vesical neck, maintenance of the probe position during effort or free movement, degree of vesical fullness, choice of the parameters. Some difficulties can be linked to the patient's anatomical characteristics (vaginal scar, short or narrow vagina, twisted urethra,...); ways to avoid them are briefly described.
 ...
PMID:Reducing uncertainty for vesico-urethral sonography in women. 778 33

In patients with incontinence problems, endovaginal urodynamic ultrasonography is a technique which easily complements manometric examination by permitting a precise study of peri-urethral soft tissue. Use of a linear array probe under standardised conditions gives, at present, the best results. To validate the technique, it is, however, important to understand the artefacts it provokes. Thirty-four patients underwent urethral profilometry at rest and during effort with and without the ultrasonographic probe. In the patients studied, none of the classical urodynamic parameters were modified. However, in cases of narrow vaginas (distance between the arcuate ligament and the ultrasonographic probe less than 12 mm), a small increase in the maximum urethral closure pressure (5 cm H2O) could be observed. The angle between an intra-urethral cotton swab and the horizontal plane was measured at rest and during maximum coughing effort, both with and without the ultrasonographic probe. A significant reduction of the angle was observed at rest and during effort. However, since linear regression is particularly effective in modelling these two artefacts (R2 = 0.8 and 0.7), they can be considered as constants and are not bothersome in clinical practice. Abdominal ultrasound was used in 10 patients during the introduction of the endovaginal ultrasonographic probe to study its impact on the base of the bladder. A clear increase in the posterior urethro-vesical angle was observed, which was shown to be a function of the degree of probe insertion in the vagina. As this artefact was variable and could not be controlled, this angle should no longer be measured using this technique.(ABSTRACT TRUNCATED AT 250 WORDS)
 ...
PMID:Study of the artefacts induced by linear array transvaginal ultrasound scanning in urodynamics. 788 71

The aim of the study was to identify the striated muscle forces hypothesized to assist bladder neck opening and closure in females. Cadaveric dissection was used to identify the levator plate (LP), the anterior portion of pubococcygeus muscle (PCM), the longitudinal muscle of the anus (LMA), and their relation to the bladder, vagina and rectum. X-ray video recordings were made during coughing, straining, squeezing and micturition in a group of 20 incontinent patients and 4 controls, along with surface EMG, urethral pressure and digital palpation studies. During effort, urethral closure appeared to be activated by a forward muscle force corresponding to PCM, and bladder neck closure by backward muscle forces corresponding to LP and LMA. During micturition the PCM force appeared to relax, allowing LP and LMA to pull open the outflow tract. The data appear to support the hypothesis of specific directional muscle forces stretching the vagina to assist bladder neck opening and closure.
 ...
PMID:Role of the pelvic floor in bladder neck opening and closure I: muscle forces. 929 95

The aim of the study was to introduce an anatomical classification for the management of urinary dysfunction based on the Integral Theory, a new connective tissue theory for female incontinence. Eighty-five unselected patients, aged 27-83 years, 12 with pure stress symptoms and 73 with mixed incontinence symptoms, were classified as having laxity in the anterior, middle or posterior zones of the vagina, using specific symptoms, signs and urodynamic parameters summarized in a pictorial algorithm. Special ambulatory surgical techniques, which included the creation of neoligaments, repaired specific connective tissue defects in the anterior (intravaginal slingplasty (IVS), n = 85), middle (cystocele repair, n = 6), or posterior zones (uterine prolapse repair, n = 31, or infracoccygeal sacropexy, n = 33). Almost all patients were discharged within 24 hours of surgery, without postoperative catheterization, returning to fairly normal activities within 7-14 days. At (mean) 21-month follow-up cure rates were: stress incontinence 88% (n = 85), frequency 85% (n = 42), nocturia 80% (n = 30), urge incontinence 86% (n = 74), emptying symptoms 50% (n = 65). Mean objective urine loss (cough stress test) was reduced from 8.9 g preoperatively to 0.3 g postoperatively, and mean residual urine >50 ml from 110 ml to 63 ml, P = <0.02. Pre- and postoperative urodynamics indicated that detrusor instability was not associated with surgical failure. Two new directions, based on the Integral Theory, are presented for the management of female urinary dysfunction, an anatomical classification which delineates three zones of vaginal damage, and a series of ambulatory surgical operations which repair these defects. The operations are fairly simple, safe, effective and easily learnt by any practising gynecologist.
 ...
PMID:New ambulatory surgical methods using an anatomical classification of urinary dysfunction improve stress, urge and abnormal emptying. 955 90

The aim of this study was to determine the quantitative and qualitative effects of patient position on coughing and Valsalva leak-point pressure in women with genunie stress incontinence. Thirty-seven patients with genuine stress incontinence and 4 with mixed incontinence underwent multichannel urodynamics using a standardized protocol. Leak-point pressures were performed using 8 Fr microtip catheters placed in the bladder and vagina at a bladder volume of 250 ml in the supine, semirecumbent and standing positions. Urethral pressure profilometry was performed in the semirecumbent position at a bladder volume of 250 ml. The mean (range) age, and median (range) gravidity, parity, body mass index (BMI), and mean (range) Q-tip deflection angle were 61 years (36-80), 3 (1-8), 3 (1-6), 26 (22-30) and 55.8 degrees (25 degrees-80 degrees), respectively. The mean (+/- standard deviation) Valsalva leak-point pressures in the supine, semirecumbent and standing positions were 82 +/- 23, 73 +/- 24 and 63 +/- 22 cmH2O, respectively (P<0.001). The mean (+/- standard deviation) cough leak-point pressures also decreased as the patients were moved from the supine (98 +/- 29 cmH2O) to the semirecumbent (88 +/- 24 cmH2O) and standing positions (77 +/- 24 cmH2O) (P<0.001). The correlation between leak-point pressure and maximum urethral closure pressure was statistically significant and was dependent upon patient position and the provocative maneuver used.
 ...
PMID:The effect of patient position on leak-point pressure measurements in women with genuine stress incontinence. 1199 13

The bulbocavernosus muscle (BCM) surrounds the vaginal introitus and covers the vestibular bulb. Its role in erection is known. However, as it surrounds the vaginal introitus, it may also have a role in intravaginal pressure regulation and in the pathogenesis of uterovaginal prolapse. We investigated the effect of increased intra-abdominal pressure (IAP) on the BCM, aiming to assess its possible function in supporting the uterus, vagina and anorectum. The intrarectal (representative of the IAP) and intravaginal pressures were measured by manometric catheters in 19 healthy women volunteers (mean age 46.2 +/- 10.4 years). The EMG activity of the BCM and its response to straining at different pressures were recorded by a concentric needle electrode. Two types of straining were tested: sudden momentary and slow sustained. The procedure was repeated in 11 of the women after individual anesthetization of the BCM, rectum and vagina. Sudden straining (coughing) produced a significant increase in intrarectal ( P<0.0001) and intravaginal ( P<0.0001) pressure as well as BCM EMG activity. Slow straining effected a similar but lower response: the BCM responded gradually with pressure elevation, whereas the latency exhibited a gradual decrease. The BCM did not react to straining after individual anesthetization of the BCM, vagina and rectum, but did respond to saline administration. The results were reproducible. BCM contraction on straining postulates a reflex relationship, which we call the 'straining-bulbocavernosus reflex'. We hypothesized that this reflex is evoked by straining and results in BCM contraction and closure of the vaginal introitus. The vagina is believed to become a closed cavity, counteracting the increased intra-abdominal pressure and the uterine tendency to prolapse. The high pressure in the closed vaginal cavity presumably supports the rectovaginal septum against the high intrarectal pressure, and is suggested to share in the prevention of rectocele. The role of BCM in the pathogenesis of uterovaginal prolapse and rectocele needs further study.
 ...
PMID:Study of the effect of straining on the bulbocavernosus muscle with evidence of a straining-bulbocavernosus reflex and its clinical significance. 1235 88

The aim of this study was to test a surgical technique for the treatment of stress urinary incontinence associated with genital prolapse through a transvaginal suspension anchored to the pubic bone. Thirty-seven patients with severe genital prolapse and urodynamically proven stress incontinence were operated on with this procedure from February 1998 to May 2000. Preoperatively a detailed history, pelvic examination and urodynamic studies were carried out. The degree of prolapse was assessed pre- and postoperatively in the lithotomy position in accordance with the classification proposed by Baden and Walker [8]. Two titanium bone screws with no. 1 polypropylene sutures attached to them and a battery-operated screw inserter are used to fix the vaginal sutures to the pubic bone bilaterally. The procedure is performed transvaginally with no abdominal or suprapubic incisions. Objective outcomes were assessed by symptom assessment, clinical examination and a full urodynamic evaluation at 6 months postoperatively, and annually by clinical evaluation. Subjective outcomes were assessed by directly interviewing the patients about their postoperative urinary symptoms and asking them to classify their level of satisfaction. An objective cure rate (no objective loss of urine during coughing in the absence of a simultaneous detrusor contraction) at the 6-month postoperative urodynamic evaluation was observed in 23 of 37 patients (62%). Recurrent anterior vaginal wall prolapse (grade 2) had developed in 7 of 37 patients (27%). Subjectively, 73% of the patients expressed satisfaction with the procedure. Early results using two bone screws into the pubis to fix the periurethral and perivesical tissues and vagina to the posterior surface of the pubic bone were disappointing. Based on our results we have abandoned the use of this procedure to correct stress incontinence associated with severe genital prolapse.
 ...
PMID:Pubic bone anchoring devices for the surgical treatment of urinary stress incontinence in patients with severe genital prolapse. 1235 92

Coughing or straining evokes reflex bulbocavernosus (BCM) and puborectalis (PRM) muscle contraction, which apparently transforms the vagina into a closed high-pressure cavity. This elevated vaginal pressure counteracts the increased intra-abdominal pressure and the tendency of the uterus to prolapse, and also supports the rectovaginal septum against the high straining-induced intrarectal pressure and possible consequent rectocele (posterior vaginal prolapse) formation. We investigated the hypothesis that a weak BCM and PRM share in the genesis of rectocele by changing the rectovaginal pressure gradient. Twenty-three women with rectocele (mean age 43.2+/-6.6 years) and 12 healthy women volunteers (mean age 41.6+/-6.2 years) were studied. The response of the intrarectal (intra-abdominal) and intravaginal pressure, as well as the EMG activity of the BCM and PRM to straining or coughing, was recorded. In the healthy volunteers the rectal and vaginal pressures showed a significant increase on coughing or straining, with no significant difference between the rectal or vaginal pressures. Also, the BCM and PRM EMG activity exhibited a significant increase. Rectocele patients showed a significantly low resting vaginal pressure. The increase in rectal and vaginal pressure, as well as of the EMG activity of the BCM and PRM on straining or coughing, was significantly lower and the latency of the EMG response was significantly longer than those of the healthy volunteers. A difference in the rectovaginal pressure gradient showing a significant increase in the rectal against the vaginal pressure, particularly on coughing or straining, is suggested to be the basic factor in the genesis of rectocele. This pressure difference appears to be caused by diminished BCM and PRM contractile activity. A disrupted rectovaginal septum is not a prerequisite for rectocele formation, as the septum appears normal in obstructed defecation despite the common occurrence of rectocele. A histopathologic study of the septum in rectocele seems necessary.
 ...
PMID:On the pathogenesis of rectocele: the concept of the rectovaginal pressure gradient. 1461 6

The normal pelvic floor functions as a balanced synergistic system composed of muscle, connective tissue (CT), and nerve components, with CT being the most vulnerable. The aim was to address a wide range of pelvic floor dysfunctions by strengthening all possible components of the system with minimal time loss, weaving every element of treatment seamlessly into a daily routine. The study group consisted of patients from a tertiary referral pelvic floor clinic who, after testing, opted for nonsurgical treatment of their problem. There were no exclusion criteria. The patients had presented with symptoms which included stress, urge, frequency, nocturia, abnormal emptying and pelvic pain, and the fate of these was tracked prospectively. The regime comprised four visits in 3 months. An anatomical classification guided diagnosis of anatomical defects in the anterior, middle and posterior compartments of the vagina. HRT was administered to all patients, electrotherapy 20 min per day for 4 weeks, squeezing 3 x 12 per day, reverse pushdowns 3 x 12 per day and squatting or equivalent up to 20 min per day. Of 147 patients (mean age 52.5 years), 53% completed the programme. Median QOL improvement reported was 66%, mean cough stress test urine loss reduced from 2.2 g (range 0-20.3 g) to 0.2 g (range 0-1.4 g), p =<0.005, and 24-h pad loss from a mean of 3.7 g (range 0-21.8 g) to a mean of 0.76 g (range 0-9.3 m), p =<0.005. Frequency, nocturia and pelvic pain were significantly improved ( p=<0.005). Residual urine reduced from mean 202 ml to mean 71 ml ( p=<0.005). This method extends indications for nonsurgical therapy beyond stress incontinence, and the results appear to encourage this approach. Confirmation by other investigators is required.
 ...
PMID:Synergistic non-surgical management of pelvic floor dysfunction: second report. 1501 37

The female pelvic floor (PF) provides anatomical support to many visceral organs, such as uterus, bladder, urethra, vagina, and rectum. Physiologically, the PF is made up of a number of highly coordinated muscle groups organized to respond to postural and abdominal stresses to maintain continence. In this article, we describe a new methodology for the evaluation of PF strength using a novel vaginal probe design, having force and displacement sensors. This design was derived on the basis of imaging data showing that force/displacement characteristics are important determinants of the integrity of the PF function. The prototype probe used was constructed to evaluate the dynamic responses to slow voluntary contractions as well as reflex stress contractions. Initial clinical experiments were performed on nine healthy female subjects. The probe recorded the force and displacement signals on the anterior and posterior sides of the subjects' middle vaginal wall in voluntary PF muscle contraction and cough. The time domain and frequency domain characteristics of the dynamic responses, including the force and displacement responses, of the vaginal wall were measured and the power and energy associated with the dynamic responses of the PF were analyzed showing the differences between the dynamic characteristics of the voluntary PF muscle contraction and cough. Results show that voluntary PF muscle contractions have higher amplitudes, longer duration, and higher power than reflex contractions. The design of this probe enables the measurement of force and displacement during rapidly occurring events.
 ...
PMID:Evaluation of the dynamic responses of female pelvic floor using a novel vaginal probe. 1741 19


<< Previous 1 2 3 Next >>