[Gallstone ileus, an uncommon cause of bowel obstruction]. / Íleo biliar, causa poco frecuente de obstrucción intestinal.

Gallstone ileus is a rare complication of cholelithiasis. It is characterized by bowel obstruction secondary to gallstone impaction at some point of the gastrointestinal tract due to the existence of a bilioenteric fistula. The aim of this analysis was to evaluate our experience through a retrospective study, covering a 12-year period. It included 14 cases (10 women and 4 men) with a median age of 81 years; 11 of the patients had comorbidities. The main analytic alteration was an increase in urea (median 79mg/dl). Diagnosis was confirmed through abdominal computed tomography in 10 cases and plain abdominal x-ray in 4. The stone was located in the jejunum in 6 cases, the ileum in 6, and the sigmoid colon in one; the mean stone size was 3cm. There were 11 cases of cholecystoduodenal fistula, one case of cholecystocolonic fistula, and one idiopathic fistula. Two patients died, including the patient that did not undergo surgery.

[How to manage risk in the surgical area. A Modal Analysis of Failures and Surgical Effects]. / Cómo gestionar el riesgo en el área quirúrgica. Análisis modal de fallos y efectos quirúrgicos.

OBJECTIVE: First to identify the areas of improvement in the surgical area before and during the performance of a surgical procedure in general surgery through the application of a Modal Analysis of Failures and Effects. Second to establish preventive measures to avoid adverse events in the surgical area. METHOD: A multidisciplinary working group was created in a university hospital for risk management in the General Surgery Operating Room Unit. The Modal Analysis of Faults and Effects was used. Potential risks for the patient in the ante-surgery and within the operating room were identified. The Risk Priority Index was calculated and preventive measures were established for all of them, with special interest when the Risk Priority Index was higher than 100. Preventive measures were developed based on the detected risks as well as those responsible for them. RESULTS: We identified a greater number of risks when the patient is in the operating room than in the ante-surgery room. Those with a higher risk priority index were: anticoagulated or antiaggregated patients, urinary tract infections, osteoarticular or neuropathic problems, patients not prepared for colon surgery, errors in laterality and leaving compresses in the operative field. CONCLUSIONS: A risk map has been developed in our organization, allowing the design of strategies to improve Patient Safety in the Surgical area. Training is a key aspect to improve Patient Safety.

[Creation and validation of a new in-house synthetic scale to measure patient safety culture]. / Creación y validación de una nueva escala para medir cultura de seguridad del paciente en el medio hispano hablante.

OBJECTIVE: Creation and validation of a new in-house synthetic scale to measure patient safety culture. MATERIAL AND METHOD: Cross-sectional and descriptive study in which the results of the assessment of the level of safety culture in health and non-health professionals of a university hospital are collected using a new in-house synthetic scale as a measurement tool. It is called 'Questionnaire on patient safety culture in a Spanish speaking environment'. The construction process was carried out in six phases: Bibliographic search; Validation of the structure and content of the questionnaire by a group of experts in patient safety using a nominal group technique; Assumptions verification and exploratory factor analysis; Pilot test to ensure its compression by a convenience sample of expert professionals; Modification of version 1.1 after the relevant analyses and analysis of the reliability of the questionnaire. RESULTS: The final version of the questionnaire had nine items, grouped into three factors a priori: Hospital Management support in patient safety, Perception of Safety, and Expectations and actions of the Managers/Supervisors that favour safety. The items were structured using a 5-point Likert scale. A general assessment item on patient safety at the Centre was also included, as well as five open questions to identify actions on patient safety undertaken by the Centre. Finally, the possibility of making observations in a section of free text was included. The comprehension analysis did not recommend, in any case, the revision of the wording or modification of the items. The Spearman and Pearson indices were similar, which allowed us to assume the linearity in the relationships proposed. The Kolmogorov-Smirnov test was satisfactory in all cases, which guaranteed the normal distribution of the variables. The sample was adequate to perform the factorial analysis. Both the Bartlett' sphericity test and the Kaiser-Meyer-Olkin (KMO) index showed sample quality to perform the analysis. The recommendation of the exploratory factor analysis that advised eliminating 1 item was followed. Specifically, item 9 was eliminated: 'It is only a matter of luck that in my Centre no more errors occur that affect patients'. The analysis of our scale has shown that all the factorial loads were greater than 0.5, which indicates good explanatory capacity of the item for the Dimension. In total, the scale manages to explain more than 60% of the perception by professionals in patient safety, considering an acceptable loss of information. CONCLUSIONS: A new and validated in-house scale has been created to measure patient safety culture in the Spanish speaking healthcare environment.

Single versus double experimental bile duct ligation model for inducing bacterial translocation.

BACKGROUND: Double common bile duct ligation plus section in rats is used as a model for bacterial translocation, a phenomenon that has been correlated with the degree of liver damage. This study analyzes whether a simpler variant of the technique is also a valid model to study bacterial translocation. METHODS: Fifty-six male Sprague Dawley rats underwent one of three surgical interventions: a) proximal double ligation and section of the common bile duct; b) proximal simple ligation of the bile duct; and c) sham operation. Bacterial translocation was measured by cultures of mesenteric lymph nodes, blood, spleen and liver. Stool culture and histological analysis of liver damage were also performed. RESULTS: The incidence of bacterial translocation in SBL and DBDL groups was 23,5% and 25% respectively. Mortality was similar between ligation groups (11.2% versus 10%). Liver cirrhosis developed in the group of double ligation and section (100% of the animals at 4 weeks), while portal hypertension appeared starting at week 3. None of the animals submitted to simple ligation developed liver cirrhosis. CONCLUSIONS: Simple bile duct ligation is associated with a similar incidence of bacterial translocation as double ligation, but without cirrhosis or portal hypertension.

[Immuno-nutritional prognostic factors in acute cholecystitis]. / Estudio de factores pronósticos inmunonutricionales en la colecistitis aguda.

A set of parameters that could be used to identify possible immunonutritional disturbances and serve as clinical evolution markers were measured in 210 patients diagnosed of acute cholecystitis (136 females and 74 males, 64.8 and 35.2% respectively) who were admitted into the Surgery Service of the Hospital General de 1++Elche. The prognostic evaluation indices were: a) Nutritional: hematocrit, hemoglobin, total protein, albumin, transferrin; b) Immunological: total lymphocytes and delayed hypersensitivity reaction test. The results obtained were analyzed and compared to those of the literature in this field.

[Hepatocarcinoma: a rare form of presentation]. / Hepatocarcinoma: forma infrecuente de presentación.

A case of acute abdomen presenting with pain in the right upper abdomen, pyrexia and leukocytosis is presented. At laparotomy, hepatocarcinoma with necrosis and associated acute cholecystitis was found. This is apparently an unusual report of hepatocarcinoma presenting as acute cholecystitis.

[Management of colostomies with plug: clinical aspects and patient evaluation]. / Manejo de las colostomías mediante obturador: aspectos clínicos y evaluación de los pacientes.

AIM: To assess the effectiveness of the one-piece disposable plug device Conseal (Coloplast A/S, Espergaerd, Denmark) in colostomy patients, considering clinical and social aspects. PATIENTS AND METHODS: Twenty patients with definitive (perineal-abdominal amputation 17 cases) or transitory (Hartmann in 3 cases) colostomy were studied prospectively. No patient used self-irrigations. All of them completed the study. After obtaining the patient's consent, we analyzed for comfort, leaks, security, easy handling and skin conditions by means of personal interview and clinical examination. RESULTS: Sixteen patients (80%) had previously used conventional colostomy bags, 4 (20%) started to use the plug device during the postoperative period (average 8.7 days). Fifteen patients (75%) preferred to use the plug, whereas 5 (25%) considered the plug was insecure. CONCLUSIONS: Our study suggests that the one-piece disposable plug device improves the quality of life in patients with colostomy, although adequate selection of patients and previous training are mandatory.

Effect of atropine and truncal vagotomy on the exocrine pancreatic function in dogs stimulated with intraduodenal tryptophan.

The purpose of this experimental study was to analyze the effect of different doses of atropine and bilateral transthoracic truncal vagotomy on pancreatic secretion. We chose the dog as our experimental model and used the modified Thomas method to obtain gastric juice, removing the gastric acid with a gastric cannula. An additional duodenal cannula was used for the selective intubation of the greater pancreatic duct in order to obtain pure pancreatic juice. To stimulate pancreatic secretion the pancreas was stimulated with intravenous secretin at a constant dose and intraduodenal tryptophan at gradually increasing doses. The juice was collected at 10-min intervals and volume, output of bicarbonate and protein were determined. The results obtained show that low doses of atropine (0.65, 1.25 and 5 micrograms/kg/h) strengthen the suppressive effect of truncal vagotomy on the hydrobicarbonate secretion. Greatest suppression was found in the highest dosage of atropine in response to the intraduodenal tryptophane at gradually increasing doses. The above results suggest the possible existence of local enteropancreatic cholinergic reflexes that are readily suppressed by atropine and vagotomy. Suppression is not global though, since there is no significant reduction in the pancreatic protein secretion, which shows a dosage-effect curve in response to the gradually increasing doses of intraduodenal tryptophan released by the action of endogenous cholecystokinin. Our hypothesis is that there exists a nonvagal enteropancreatic cholinergic reflex.

[Hospital activities of surgery undergraduates]. / La actividad hospitalaria del pregraduado en cirugía.

A teaching-learning system of practices in Surgery named "Hospital Activity of undergraduates in surgery" has been performed over the last five academic courses in Alicante's Medical School. It is based on the stay and participation of 10 students over a 4 weeks period in the assistance tasks of one of the Teaching Hospital Surgery Department in the areas of: hospitalization, external visits and operating rooms. In order to fulfill the proposed teaching objectives a series of clinical sessions and special practices are performed. The hospital activity of 4 academic courses has been evaluated through the performance of a test addressed to the students and a evaluation using a multiple choice test. This educative method is accepted by the students although there are some aspects susceptible to be modified. A significant increase of knowledge between a pretest and a posttest (p less than 0.05) is observed and a significant absence of lacking of knowledge regarding the cognitive objectives fulfilled. Thus, this model of teaching-learning is valid and applicable in our environment.

[Bacteriologic findings as a prognostic factor in the course of acute cholecystitis]. / Hallazgos bacteriológicos como factor pronóstico en la evolución de la colecistitis aguda.

We made a bacteriological study of bile in a consecutive study of 210 patients studied in the General Surgery Department of the General Hospital of Elche (Spain) who underwent cholecystectomy for acute lithiasic cholecystitis, as a prognostic factor in the clinical evolution of these patients. The results obtained led us to the following conclusions. 1. The presence of positive bile culture is a risk factor predisposing to postoperative septic complications. 2. Bile cultures were more frequently positive in patients over 60-years-old. 3. In the early stages of the disease, positive cultures were more frequent. 4. The organism most often isolated was E. coli, so antibiotic treatment should be directed mainly against this agent.