Development and validation of a predictive model for choledocholithiasis.

Background: Gallstone-related conditions affect a significant portion of the population, with varying prevalence among different ethnic groups. Complications such as pancreatitis and cholangitis are associated with the presence of common bile duct (CBD) stones. Existing guidelines for diagnosing choledocholithiasis lack precision, leading to excessive use of invasive procedures like endoscopic retrograde cholangiopancreatography (ERCP).

[Ameboma: possible therapeutic decisions in an amebiasis-endemic region].

Introduction: Amebiasis can mimic cecal tumors. Unless this infection is diagnosed in a timely manner, affected individuals may undergo extensive surgery.

Material And Methods: We carried out a retrospective analytical study of the therapeutic approach to amebiasis in a second-level hospital in an area of central Mexico with a high prevalence of this infection.

Primary closure in colon trauma.

Background: Primary repair of colon injuries is an accepted therapeutic option; however, controversy persists regarding its safety. Our objective was to report the evolution and presence of complications in patients with colon injury who underwent primary closure and to determine if the time interval (>6 h), degree of injury, contamination, anatomic site injured, PATI (Penetrating Abdominal Trauma Index) >25, and the presence of other injuries in colon trauma are associated with increased morbidity and mortality.

Methods: This was a prospective, observational, longitudinal and descriptive study conducted at the Central Hospital "Dr.

[Are antimicrobials useful in closed thoracostomy due to trauma?].

Background: Thoracic trauma accounts for 25% of deaths due to trauma. Chest trauma patients generally present to the emergency room with pneumo- or hemothorax. According to the majority of the studies, management of closed thoracostomy for trauma includes the use of antimicrobial drugs to prevent infectious complications, but this has not been proven to be beneficial.

[Omental torsion. An acute abdomen etiology].

Introduction: Omental torsion is an uncommon cause of acute abdomen, usually mimicking acute appendicitis; almost all described cases are diagnosed with laparotomy. It can be a primary or secondary condition. Primary torsion occurs without evidence of intrabdominal abnormalities.

[Spontaneous pneumothorax in pregnancy. Case report].

Background: Spontaneous pneumothorax is a rare condition during pregnancy. The most common cause is the rupture of a subpleural apical bulla or bleb, due to the increased respiratory demand of the peripartum period. The main risk for the mother is respiratory compromise; fetal risks include reduction in oxygen supply and preterm labor.

[Penetrating abdominal trauma].

Background: The abdomen ranks in third place of body areas injured by trauma. Evaluation and stabilization of these patients form the cornerstone in emergency medicine. Diagnostic approach and treatment outcome are influenced by several factors.

[Gallstone ileus].

Objective: To determine the frequency of gallstone ileus as a cholelithiasis complication and likely cause of intestinal obstruction, as well as the factors that can influence morbidity and mortality of these patients in our hospital.

Material And Methods: The files of patients undergoing cholecystectomy, as well as of those patients surgically treated for intestinal obstruction between January 2001 and December 2003, were reviewed. We analyzed the files of patients with gallstone ileus for the following characteristics: age, sex, time of evolution, signs and symptoms, diagnosis, APACHE II, concomitant diseases, mode of treatment, obstruction/fistula site and morbidity and mortality.

[Esophageal perforation].

Objective: We describe our experience in the management of esophageal perforation.

Material And Methods: Retrolective study of the esophageal perforation patients, managed from January 1999 to December 2003. Analyzed variables were age, sex, aetiology, time of diagnosis and treatment, as well as ancillary methods employed, mode of treatment and morbidity and mortality.