[Cap polyposis: an unrecognized condition].
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Adult↗
Biomedical subjects
V Aguilella
Publications and source records attributed to V Aguilella.
Doppler-guided hemorrhoidal artery ligation in the management of symptomatic hemorrhoids.
OBJECTIVE: The aim of this study is to clinically test the efficacy of a new approach for patients having symptomatic grade III and IV hemorrhoids. MATERIAL AND METHOD: 32 patients (17 females) complaining of grade III or IV hemorrhoids were included in the study. A specially designed proctoscope coupled with a Doppler transducer on its tip was used to identify the hemorrhoidal arteries, which were afterwards suture ligated. Operating time as well as per- and post-operative complications were analyzed. Follow-up was planned following discharge after 1 week, 1 month, 6 months and 1 year. RESULTS: Mean operation time was 27 (range 18-43) minutes, and 5 (range 4-7) arteries were located on average. No patient had severe or moderate postoperative pain, with anal discomfort being the main complaint. Rectal bleeding and tenesmus were the commonest post-operative complications. After one year of follow-up, 19 patients were free of symptoms and 6 of them had significant symptom relief. According to grade, the technique failed in just 3 grade III patients, but in as many as 4 grade IV hemorrhoid cases. CONCLUSIONS: Doppler-guided hemorrhoid artery ligation is an easy-to-perform technique that is well accepted by patients and has good results for grade III hemorrhoids.
Adult↗
The utility of endovaginal sonography in the evaluation of fecal incontinence.
OBJECTIVE: The endoanal sonography in female patients with faecal incontinence is sometimes difficult and can lead to diagnostic errors. The aim of this study is to evaluate the value of endovaginal sonography in such cases. MATERIAL AND METHOD: Thirty female patients complaining of faecal incontinence are included in the study. Anal endosonography was performed in all of them in a single ambulatory session, pictures were taken from all along the anal and results were analyzed afterward. Vaginal endosonography was then performed using the same equipment. Result from both techniques were compared. RESULTS: Endoanal sonography was performed in all 30 patients. In 17 cases no anomalies were found. In 3 patients a simple internal anal sphincter defect was found. One case showed a lateral lesion in both sphincters. Six cases presented anterior external defect and in the rest 3 cases a clear view of the anterior wall was impossible. Vaginal endosonography shows a clear image of the anal canal in 23 out of 30 patients. In two cases changed the results of anal endosonography. CONCLUSION: In the study of faecal incontinence, despite of its technical limitations, endovaginal ultrasound could be of help when the anterior wall of the anal canal is not properly defined.
Adult↗
Incidence of incisional hernia following vertical banded gastroplasty.
BACKGROUND: Our aim was to determine which patient-related factors influence the incidence of incisional hernia after vertical banded gastroplasty for morbid obesity. METHODS: We reviewed the medical records of 80 morbidly obese patients operated on between 1986 and 1993. All the operations were performed by only one surgeon, and the midline laparotomy was closed by means of continuous polyglactin 910 suture. Statistical analysis was performed using the Fisher exact test, and significance was assigned for values of P<0.05. RESULTS: Incidence of incisional hernia in: obese 24%, superobese 51% ( P=0.0165), men 40%, women 34% ( P=0.7671), age<50 33%, age>50 50% ( P=0.3137), nondiabetics 31%, diabetics 66% ( P=0.0610), no wound infection 34%, wound infection 37% ( P>0.9999), no anemia 31%, anemia 50% ( P=0.1675), no vomiting 39%, vomiting 32% ( P=0.6350). CONCLUSION: The only patient-related factor that significantly influences the incidence of incisional hernia in morbidly obese patients is body mass index.
Adolescent↗
A Perturbed Electric Double Layer Near a Soft Polar Interface
A perturbation analysis is applied to a nonequilibrium double electric layer (NDEL) near a membrane with extended soft permeable interfaces (polar zones) under steady-state ion flux conditions. The membrane has been modeled as composed of three layers: an inner hydrophobic layer and two polar zones with fixed charges and dipoles. Ion flux is described according to Nernst-Planck and Poisson equations. A first order approximation of the nonequilibrium electric potential has been obtained, using the electric current as the small parameter. The influence of the ionic flux, the surface dipole density, and the thickness of the polar zone on the NDEL near the membrane has been analyzed. The electric potential and hence the ion concentration profiles in the NDEL change considerably with surface dipole density. A maximum in the electric potential, which is determined by ion flux and polar zone parameters, is predicted in certain cases. The effects shown can help in the interpretation of permselectivity measurements.
Journal Article↗