Assessment of brain activity during voluntary anal sphincter contraction: Comparative study in women with and without fecal incontinence.

BACKGROUND: Voluntary anal sphincter function is driven by an extended network of brain structures, most of which are still unknown. Disturbances in this function may cause fecal incontinence. The aim of this study was to characterize the cerebral areas involved in voluntary contraction of the anorectal sphincter in healthy women and in a group of patients with fecal incontinence by using a standardized functional magnetic resonance imaging (fMRI) protocol. METHODS: This comparative study included 12 healthy women (mean age 53.17 ± 4.93 years) and 12 women with fecal incontinence (56.25 ± 6.94 years). An MRI-compatible anal manometer was used to register voluntary external anal sphincter contraction. During brain fMRI imaging, participants were cued to perform 10-s series of self-paced anal sphincter contractions at an approximate rate of 1 Hz. Brain structures linked to anal sphincter contractions were mapped and the findings were compared between the 2 study groups. KEY RESULTS: There were no differences in the evoked brain activity between the 2 groups. In healthy women, group fMRI analysis revealed significant activations in medial primary motor cortices, supplementary motor area, bilateral putamen, and cerebellum, as well as in the supramarginal gyrus and visual areas. In patients with fecal incontinence, the activation pattern involved similar regions without significant differences with healthy women. CONCLUSIONS & INFERENCES: This brain fMRI-anorectal protocol was able to map the brain regions linked to voluntary anal sphincter function in healthy and women with fecal incontinence.

[Descriptive study on the improvement of quality perceived after the introduction of a clinical pathway by patients subjected to bariatric surgery]. / Estudio descriptivo de la mejora de la calidad percibida en los pacientes sometidos a cirugía bariátrica tras la implantación de una vía clínica.

OBJECTIVES: To evaluate the level of perceived satisfaction in patients undergoing bariatric procedures after implementing a clinical pathway, and to analyse factors related to a high degree of satisfaction. MATERIAL AND METHODS: A cohort of patients was invited to fulfil, anonymously and voluntarily, a SERVQHOS survey the day before hospital discharge. RESULTS: Seventy-one (53 female) out of 103 patients (70%) responded to the questionnaire. A total of 97.3% of patients who completed the survey answered to the questions "as expected" or "above expectations". Most (98.6%) of the patients were "very satisfied" or "satisfied" with the care received, and 97.2% would recommend the hospital to others. Questions better related to overall satisfaction were technology used (P=.008), staff appearance (P=.019), the interest of staff to fulfil a promise (P=.002), and to solve the problems of the patient (P=.021), information provided by the medical staff (P=.039) and waiting time until being seen by the doctor (P=.002). In the multivariate study, only the "personalized care" achieved the category of a predictive variable (r=0.52). Median hospital stay was 3 days, and 76% of patients considered it adequate. The percentage of highest satisfaction was significantly lower in female, singles, unemployed, and those with academic studies. CONCLUSIONS: Morbid obese patients included in a clinical pathway of bariatric surgery had a good perception with the care received.

Unsupervised 4D myocardium segmentation with a Markov Random Field based deformable model.

A stochastic deformable model is proposed for the segmentation of the myocardium in Magnetic Resonance Imaging. The segmentation is posed as a probabilistic optimization problem in which the optimal time-dependent surface is obtained for the myocardium of the heart in a discrete space of locations built upon simple geometric assumptions. For this purpose, first, the left ventricle is detected by a set of image analysis tools gathered from the literature. Then, the segmentation solution is obtained by the Maximization of the Posterior Marginals for the myocardium location in a Markov Random Field framework which optimally integrates temporal-spatial smoothness with intensity and gradient related features in an unsupervised way by the Maximum Likelihood estimation of the parameters of the field. This scheme provides a flexible and robust segmentation method which has been able to generate results comparable to manually segmented images for some derived cardiac function parameters in a set of 43 patients affected in different degrees by an Acute Myocardial Infarction.

Prevalence of faecal incontinence and analysis of its impact on quality of life and mental health.

AIM: Faecal incontinence is a significant healthcare problem, with an estimated prevalence of up to 5% of the general population. Little is known about its prevalence among patients attending primary care. METHOD: A cross-sectional multicentre study was undertaken. Adult patients attending 10 primary health centres were interviewed. Faecal incontinence was defined as involuntary leakage of flatus, liquid or solid stool at least once in the preceding 4 weeks. Health-related and disease-specific quality of life was assessed using the 36-item Short-Form Health Survey and the Fecal Incontinence Quality of Life scale, respectively. Mental health status was assessed using the 28-item General Health Questionnaire. An adjusted multivariate analysis was performed to study the association of faecal incontinence with the presence of altered mental health status. RESULTS: A total of 518 subjects (mean age 60.3 years) were studied. The prevalence of faecal incontinence was 10.8%. Altered mental health status was found in 51.8% of patients with faecal incontinence and in 30.5% of those without (P = 0.001). Faecal incontinence was a significant independent factor for altered mental health status (odds ratio, 2.088; 95% CI 1.138-3.829; P = 0.017). CONCLUSION: The prevalence of faecal incontinence in primary care is high, with a significant impact on quality of life and mental health status.

[Thoracic pain of esophageal origin. Assessment of 125 consecutive patients with resting angina and angiographically normal coronary arteries]. / Dolor torácico de origen esofágico. Evaluación de 125 pacientes consecutivos con angina de reposo y arterias coronarias angiográficamente normales.

BACKGROUND: The esophagus may be the origin of chest pain clinically indistinguishable from that of myocardial ischemia. Gastroesophageal reflux (GER) and esophageal motility disorders (EMDs) are the main causes of esophageal chest pain, and esophageal motility tests are important for an appropriate diagnosis. We studied 125 unselected patients with angiographically normal coronary arteries presenting with atypical (resting) angina which was shown not to be of cardiac origin. METHODS: Stationary esophageal manometry and 24-hour pH studies were performed in all patients, and 116 of them were submitted to edrophonium provocation test (Tensilon, 10 mg as IV bolus). RESULTS: Spastic EMDs were identified as an isolated abnormality in 23 patients (18%), whereas GER was documented in 70 patients (56%). Esophageal dysmotility at baseline manometry (n = 40), a positive edrophonium test (n = 19), abnormal acid reflux indices by 24-hour pH recording (n = 62), and association of chest pain with acid reflux during pH testing (n = 24) variably overlapped in many patients. The esophagus was directly blamed as the source of atypical angina in 33 patients (26%) who had induction of their usual chest pain by cholinergic stimulation and/or association of spontaneous pain events with acid reflux. CONCLUSIONS: Esophageal dysfunction in common in patients with atypical angina considered not to be of cardiac origin and contributes to patients' symptoms. Because they may detect treatable causes of chest pain such as GER or contribute to management by assessing the diagnosis of EMD, esophageal motility tests are indicated in many patients with noncardiac chest pain.