Manuel Vial

• Epidemiology MS, Surgery PhD
• Medical Professional at University of Chile

Background Emergence delirium (ED) is a mental disturbance in children during recovery from general anaesthesia. The Pediatric Anesthesia Emergence Delirium (PAED) scale is the only validated scale that assesses ED in paediatric patients undergoing general anaesthesia. The aim of this study was the translation and cross-cultural adaptation of the P...

The American Society of Anesthesiologisth Physical Status (ASA PS) scale is one of the most widely used scales in the world, being an integral part of the pre-anesthetic evaluation of each patient. The purpose of the ASA PS scale is to categorize, and subsequently communicate the patient's risk of undergoing any procedure that requires anesthesia....

Introduction: Our team reported the development of a scale for assessing methodological quality in prognostic papers (scale MinCir Pr). The aim of this paper is to report the process of validation of scale MinCir Pr. Material and Methods: We reviewed 121 papers about prognosis. Score was performed according to the scale MinCir Pr and level of evide...

Introduction: Our team reported the development of a scale for assessing methodological quality in prognostic papers (scale MinCir Pr). The aim of this paper is to report the process of validation of scale MinCir Pr. Material and Methods: We reviewed 121 papers about prognosis. Score was performed according to the scale MinCir Pr and level of evide...

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. A cross-sectional multicentre study was undertaken. Adult patients attending 10 primary health centres were interviewed. Faecal incontinence was defi...

Fecal incontinence is a highly prevalent condition, especially in women. However, few data on prevalence in women attending primary care are available, particularly regarding the presence of risk factors. The aim of this study was to determine characteristics of women with fecal incontinence and to analyze obstetric history and menopause as potenti...

Background: For decades, the indication of analgesia in patients with Acute Abdominal Pain (AAP) has been deferred until the definitive diagnosis has been made, for fear of masking symptoms, generating a change in the physical exploration or obstructing the diagnosis of a disease requiring surgical treatment. This strategy has been questioned by s...

IntroductionBariatric surgery is the most effective option for the treatment of patients with a high risk of complications due to their obesity. However, it brings about a series of changes in calcium and vitamin D metabolism and an increase in resorption which lead to a loss of bone mass.

Bariatric surgery is the most effective option for the treatment of patients with a high risk of complications due to their obesity. However, it brings about a series of changes in calcium and vitamin D metabolism and an increase in resorption which lead to a loss of bone mass. The objective of this study is to compare sleeve gastrectomy (SG) and R...

Fecal incontinence is a high prevalence disease in general population. The diagnosis of alterations in bowel habit could be of interest for the management of this clinical disorder. The aim of the study was to study the relationship between fecal incontinence prevalence and alteration of bowel habit in patients of a metropolitan area of Barcelona....

To evaluate the results of a prospective therapeutic protocol with long-term follow up in terms of survival rates in a cohort of patients treated with Intermediate and Advanced GBC (GBC). Prospective cohort of patients with intermediate and advanced stages of GBC treated between 1996 and 2006. All cases were treated with a partial hepatic segmentec...

The incidence of adenocarcinoma of the esophagus and esophagogastric junction (gastric cardia) has risen rapidly over the past three decades in the United States and northern Europe. This increase had been most dramatic among White males. The majority of these cancers arise from Barrett's esophagus. However, less than 10% of the patients with esoph...

The aim of this study was to determine if intrabiliary rupture (IBR), an evolutive complication of hepatic echinococcosis (HE), is a risk factor for developing postoperative morbidity (POM). This was a concurrent cohort study that included patients operated on for HE between 1996 and 2006 and who had clinical check-ups at 1, 6, 12, 24, 36, 48, and...

In certain situations, which occur with particular frequency in the field of surgery and its related disciplines (where what predominates are observational-type studies), the management of randomized controlled clinical trials (RCT) is very difficult and as such, conducting a systematic review (SR) based on RCT and realice a meta-analysis is even m...

IntroductionFoot amputation wounds in patients with diabetes are complex and treatment is often difficult. At the moment negative pressure wound therapy (NPWT) is widely used for the treatment of several types of wounds. Nevertheless, the clinical evidence to support the application of this dressing in foot amputation wounds in patients with diabet...

Background: Cyst infection and subsequent abscess formation is considered a complication of hepatic echinococcosis (HE). Aim: To determine whether liver abscess of hydatid origin (LAHO) is a risk factor for the development of postoperative complications (POC) in patients operated by HE. Material and Methods: Prospective cohort study. Patients conse...

Background: Cyst infection and subsequent abscess formation is considered a complication of hepatic echinococcosis (HE). Aim: To determine whether liver abscess of hydatid origin (LAHO) is a risk factor for the development of postoperative complications (POC) in patients operated by HE. Material and Methods: Prospective cohort study. Patients conse...

Foot amputation wounds in patients with diabetes are complex and treatment is often difficult. At the moment negative pressure wound therapy (NPWT) is widely used for the treatment of several types of wounds. Nevertheless, the clinical evidence to support the application of this dressing in foot amputation wounds in patients with diabetes is scarce...

Background: Intrabiliary rupture is a complication of hepatic hydatid cysts. Aim: To determine if intrabiliary rupture is a risk factor for postoperative complications of hydatid cysts. Material and Methods: Prospective follow up of patients operated for hepatic hydatid cysts between 1996 and 2006. Patients were evaluated every six months during th...

stool type represents an important semiologic part of medical interviews. The Bristol Scale Stool Form is a clinical tool to evaluate stool consistency and form. The aim of this study was to translate and adapt the Bristol Scale Stool Form into Spanish. Differences in validation results between health professionals and patients surveyed were also e...

Background: Intrabiliary rupture is a complication of hepatic hydatid cysts. Aim: To determine if intrabiliary rupture is a risk factor for postoperative complications of hydatid cysts. Material and Methods: Prospective follow up of patients operated for hepatic hydatid cysts between 1996 and 2006. Patients were evaluated every six months during th...

Background: Bacterial colonization of bile is common in patients with bile duct obstruction, even in the absence of clinical signs of sepsis. Aim: To determine the association between bile bacterial count and postoperative complications in patients with bile duct obstruction. Material and Methods: A bile bacterial count was performed to patients wi...

Background: Bacterial colonization of bile is common in patients with bile duct obstruction, even in the absence of clinical signs of sepsis. Aim: To determine the association between bile bacterial count and postoperative complications in patients with bile duct obstruction. Material and Methods: A bile bacterial count was performed to patients wi...

The challenge of surgery for anal fistula is to eradicate the fistula track while maintaining anal continence. Seton placement is recommended to reduce postoperative faecal incontinence but interestingly a great range of functional impairment after surgery has been published. The aim of this study was to analyse the influence of intra-operative int...

Background: One of the main classification systems to describe the quality of scientific publications is the level of evidence. However, for our research team, the methodological quality is multidimensional. Aim: To design a scale to determine the methodological quality of studies dealing with prognosis. Material and Method: On a first stage, five...

Background: One of the main classification systems to describe the quality of scientific publications is the level of evidence. However, for our research team, the methodological quality is multidimensional. Aim: To design a scale to determine the methodological quality of studies dealing with prognosis. Material and Method: On a first stage, five...

The management of rectal prolapse in presence of high-risk comorbidities can be challenging. We report the use of an anal plug as a noninvasive alternative in patients with contraindication of surgery. This small device opens up in about 30 s to fit the contour of the lower rectum avoiding faecal leakage or in our case, the rectal prolapse. Althoug...

Echinococcus granulosus species has a wide variety in both geography and hosts; indeed, 10 genotypes have been reported in studies on material of animal origin. The aim of this study was to genotype E. granulosus obtained from human hydatid cysts. The hydatid fluid and sand was collected from patients who underwent surgery for hepatic and pulmonary...

Background: Cyst infection and subsequent liver abscess formation are complications of liver echinococcosis. Traditionally, this condition has been treated by simple drainage, a procedure associated with unsatisfactory postoperative evolution. Methods: The present paper examines a series of cases involving infected liver echinococcal cysts. Surgery...

To the objective of the study was to determine accuracy and predictive values of a symptoms scale for diagnosing reflux esophagitis (RE). Standard criterion study. All recruited patients from two centers in Chile underwent both digestive endoscopy (reference standard) and a symptoms scale known to be valid and reliable for diagnosing gastroesophage...

Introducción: El tratamiento de la Equinoccocosis es quirúrgico. El estudio de Keshmiri plantea el uso de albendazol como alternativa. El objetivo de este estudio es determinar validez interna y externa del estudio de Keshmiri. Material y método: Se aplicaron 4 instrumentos que valoran diferentes ámbitos metodológicos al estudio de Keshmiri. Se rea...

Background: The analysis of author affiliation of published manuscripts allows an assessment of the impact that different universities or hospitals have on a determinate journal. Aim: To analyze author affiliation of manuscripts published in Revista Chilena de Cirugia. Material and methods: All manuscripts published in the journal between 2002 and...

Introducción: Una de las variables que se analiza en los estudios bibliométricos es la procedencia de las publicaciones. Este tipo de análisis ha permitido cuantificar el impacto que tienen las distintas universidades o centros hospitalarios en el total de publicaciones de una revista en particular. El objetivo de este estudio es determinar una eve...

Background: Classic treatment of echinococcosis is surgery. The study of Keshmiri raises the use of albendazole as an alternative. Aim: To determine internal and external validity of the Keshmiri study. Material and methods: Four instruments that assess methodological quality, were applied to the manuscript. A critical reading was done and the inte...

Background: The analysis of author affiliation of published manuscripts allows an assessment of the impact that different universities or hospitals have on a determinate journal. Aim: To analyze author affiliation of manuscripts published in Revista Chilena de Cirugia. Material and methods: All manuscripts published in the journal between 2002 and...

Introducción: El uso de la profilaxis antibiótica (PA) es una práctica común en cirugía, sin embargo, su indicación en la colecistectomía laparoscópica electiva (CLE) es controversial. El objetivo de este estudio es determinar la efectividad de la PA en CLE en relación a incidencia de infección del sitio operatorio (ISO). Material y método: Se real...

Introducción: Existe controversia acerca de la eficacia, efectividad y eficiencia del tratamiento laparoscópico de quistes y tumores hepáticos, así como respecto de las resecciones hepáticas por vía laparoscópica. El objetivo de este estudio es evaluar la evidencia disponible sobre la efectividad de la cirugía laparoscópica en el tratamiento de qui...

Introduction: Laparoscopy is the gold standard treatment for cholecystolithiasis. However its efficacy is not yet entirely known. The aim of this study is to evaluate the available evidence on the effectiveness of laparoscopic surgery for treating cholecystolithiasis and common bile duct lithiasis (CBDL). Material and Method: MEDLINE, EMBASE and Th...

Publishing a manuscript is the logical result of any research study, allowing information to be shared with the scientific community, and providing personal satisfaction and career enhancement. The present article reviews some of the rules and recommendations for drafting the main sections of an original study (introduction, methodology, results, d...

The use of analgesics during the diagnosis and decision-making process in patients with acute nontraumatic abdominal pain is controversial. The aim of the present study was to determine whether the use of opioid analgesics in patients with acute nontraumatic abdominal pain increases the risk of diagnostic error. We performed a systematic review of...

Publishing a manuscript is the logical result of any research study, allowing information to be shared with the scientific community, and providing personal satisfaction and career enhancement. The present article reviews some of the rules and recommendations for drafting the main sections of an original study (introduction, methodology, results, d...

Introduction The use of analgesics during the diagnosis and decision-making process in patients with acute nontraumatic abdominal pain is controversial. The aim of the present study was to determine whether the use of opioid analgesics in patients with acute nontraumatic abdominal pain increases the risk of diagnostic error. Method We performed a...

For decades, analgesia for patients with acute abdominal pain was withheld until a definitive diagnosis was established for fear of masking the symptoms, changing physical findings or ultimately delaying diagnosis and treatment of a surgical condition. This non-evidence-based approach has been challenged by recent studies demonstrating that the use...

The results of a research study can be presented through oral communications, posters, conferences and publications, etc. The present article suggests ways in which oral communications and posters can be presented. The sequence of steps leading up to an oral presentation can be divided into writing a summary, designing the graphic material, giving...

Follow-up of patients undergoing surgery for hepatic echinococcosis (HE) is essential to ensure the absence of infection. The aim of this study was to determine the behavior over time of specific IgG and IgE to Echinococcus granulosus determined by the ELISA technique (ELISA-IgG and ELISA-IgE) in patients undergoing surgery for HE. We performed a c...

Introduction Follow-up of patients undergoing surgery for hepatic echinococcosis (HE) is essential to ensure the absence of infection. The aim of this study was to determine the behavior over time of specific IgG and IgE to Echinococcus granulosus determined by the ELISA technique (ELISA-IgG and ELISA-IgE) in patients undergoing surgery for HE. Ma...

The results of a research study can be presented through oral communications, posters, conferences and publications, etc. The present article suggests ways in which oral communications and posters can be presented. The sequence of steps leading up to an oral presentation can be divided into writing a summary, designing the graphic material, giving...

To determine the methodologic quality of therapy articles about humans published in ISI surgical journals, and to explore the association between methodologic quality, origin, and subject matter. It is supposed that ISI journals contain the best methodologic articles. This is a bibliometric study. All journals listed in the 2002 ISI under the subje...

INTRODUCTION: Acute cholangitis (AC) is a clinical diagnosis entity. A high prevalence of acute inflammatory changes (AIC) are found in hepatic needle biopsies (HB) in these patients. The aim of our study is to determine the prevalence of AIC in HB performed on patients with AC due to biliary stones. METHODS: Cross-sectional study. Surgery was perf...

There is controversy about the use of analgesia during the diagnostic work up of acute abdominal pain. We performed a systematic review of literature in databases such as COCHRANE and MEDLINE, looking for randomized clinical trials comparing the use of opiate analgesics and placebo in patients with acute abdominal pain, before surgery. The variable...

Surgery is a curative treatment for gastric cancer (GC). As relapse is frequent, adjuvant therapies such as postoperative chemo radiotherapy have been tried. In Chile, some hospitals adopted Macdonald's study as a protocol for the treatment of GC. To determine methodological quality and internal and external validity of the Macdonald study. Three i...

Background: Surgery is a curative treatment for gastric cancer (GC). As relapse is frequent, adjuvant therapies such as postoperative chemo radiotherapy have been tried. In Chile, some hospitals adopted Macdonald's study as a protocol for the treatment of GC. Aim: To determine methodological quality and internal and external validity of the Macdona...

SUMMARY We report a 49 years old female presenting with productive cough, expectoration of purulent bile and respiratory failure. An emergency ultrasound showed a lesion with mixed echogenicity in the right hepatic lobe with dilatation of intra and extrahepatic biliary tract. The patient was operated and an abscessed hydatid cyst was found, with a...

The adequate treatment for hydatidosis requires a knowledge of certain aspects related to the survival of infectious agents, especially protoscoleces. The aim of this study is to evaluate the viability of protoscoleces in human hepatic hydatid cysts in order to determine the prevalence of their fertility and to study the association with variables...

Background: The purpose of the present paper was to determine the association between clinical evolutionary and laboratory variables with postoperative morbidity in patients surgically treated for liver hydatidosis (LH). Methods: A case−control nested cohort study was undertaken. Patients were studied and surgically treated in Hospital Regional of...

The objective of this study was to determine the best surgical option for elective surgery in non-complicated colon cancer by comparing open (OR) and laparoscopic resection (LR). A systematic review of the literature was performed. Studies of non-complicated colon cancer in adults treated by OS and LS published between 1990 and 2002 were analyzed....

The aim of this study was to determine the association between the IF of surgery journals and the level of evidence of articles on therapeutic procedures published in these journals. A bibliometric study was performed. Journals listed in the 2002 ISI under the subject heading of Surgery were included. Journals were classified by applying the 33rd p...

Introduction The aim of this study was to determine the association between the IF of surgery journals and the level of evidence of articles on therapeutic procedures published in these journals. Material and method A bibliometric study was performed. Journals listed in the 2002 ISI® under the subject heading of Surgery were included. Journals wer...

Introduction The objective of this study was to determine the best surgical option for elective surgery in non-complicated colon cancer by comparing open (OR) and laparoscopic resection (LR). Patients and method A systematic review of the literature was performed. Studies of non-complicated colon cancer in adults treated by OS and LS published bet...

To determine the efficacy of immunoprecipitation (DD5), enzyme immunoanalysis (ELISA-IgG), and immunoelectrotransference or Western blot (WB) in patients with liver echinococcosis (LE) used separately, in parallel and in series. Diagnostic test study. DD5, ELISA-IgG, and WB were applied in 75 patients with LE and 75 with cholelithiasis. Surgery was...

Bariatric surgery is the therapy for morbid obesity. There are a number of surgical procedures, which are performed by open surgery (OS) and more recently also by laparoscopy (LS). The objective of this study was to consider the evidence for the best bariatric surgical options. Systematic review of the literature was conducted. Morbid obesity studi...

Twelve pregnant women with hydatid disease are presented with median age of 29; 11 (91.7%) had a liver cyst and one (8.3%) had a kidney cyst as the primary disease location. Four (33.3%) had additional cysts located in the pelvis, peritoneal cavity and/or spleen; eight (66.7%) had two or more abdominal cysts. Three patients (25.0%) had surgery at t...

The objective of this study is to determine the prevalence of esophageal disorders (ED) associated with recurrent chest pain (RCP) and the utility of esophageal functional tests (EFT) in the study of these patients. The cross-sectional study was conducted at Hospital Clínico de La Frontera, Chile. One hundred and twenty-three patients with RCP were...

South Chile is an endemic zoonosis area of hydatid disease, where prevalence rates can be 30 to 40/100 000 habitants. Not only is surgery performed on a great number of liver and lung hydatid cysts every year, but also upon cysts found in uncommon abdominal locations such as spleen, peritoneum and kidney. Information on this subject is scarce. We r...

Cyst infection and subsequent liver abscess formation are complications of liver echinococcosis. Traditionally, this condition has been treated by simple drainage, a procedure associated with unsatisfactory postoperative evolution. The present paper examines a series of cases involving infected liver echinococcal cysts. Surgery was performed at the...

The laparoscopic approach for managing of liver echinococcosis is a controversial issue because of scarce experience worldwide. The aim of this report is to describe the technical details of our laparoscopic method and present our results. Consecutive cases of liver echinococcosis managed by laparoscopic surgery are reported. Thoracic x-ray and abd...

Hydatidosis is and endemic disease in the south of Chile, especially in Region IX where remain rates of high prevalence. Cholangiohydatidosis is an infrequent complication of liver hydatidosis. The objective of this paper is to describe clinical features of a series of patients with cholangiohydatidosis. Series of cases of cholangiohydatidosis trea...

Hydatidosis is and endemic disease in the south of Chile, especially in Region IX where remain rates of high prevalence. Cholangiohydatidosis is an infrequent complication of liver hydatidosis. The objective of this paper is to describe clinical features of a series of patients with cholangiohydatidosis. Series of cases of cholangiohydatidosis trea...

Echinococcosis is an endemic zoonosis in the south of Chile, so we have the opportunity to treat many patients especially the liver location which is the most common situation of this disease. Hepatic hydatid cyst presents its own morbidity and mortality due its complications and associated with surgical procedures. Morbidity has rates between 11 a...

Echinococcosis is an endemic zoonosis in the south of Chile, so we have the opportunity to treat many patients especially the liver location which is the most common situation of this disease. Hepatic hydatid cyst presents its own morbidity and mortality due its complications and associated with surgical procedures. Morbidity has rates between 11 a...

SUMMARY The echinococcosis is an endemic zoonosis in our country, specially in the IX region where the high prevalence of the disease allows forthe observation of hydatid cysts in unusual locations such as the spleen, pancreas and peritoneum. Our goal is to describe the clinical characteristics and course of the disease in a series of patients with...

SUMMARY Background: There are doubts about the effectiveness of laparoscopic treatment of hepatic tumors and cysts. Aim: To assess the available evidence about the effectiveness of laparoscopic treatment of hepatic tumors and cysts and liver resections. Material and methods: A search in MEDLINE, EMBASE and