Ana María Burgos L

University of Santiago, Chile, CiudadSantiago, Santiago, Chile

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Publications (18)4.1 Total impact

  • Attila Csendes J, Andrea Muñoz Ch, Ana María Burgos L
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    ABSTRACT: The complete blood count (CBC) and C-reactive protein (CRP) are useful inflammatory parameters for ruling out acute postoperative inflammatory complications. To determine their changes in gastric cancer patients submitted to total gastrectomy. This is a prospective study, with 36 patients with gastric cancer who were submitted to elective total gastrectomy. On the first, third and fifth postoperative day (POD), blood count and CRP changes were assessed. Patients with postoperative complications were excluded. Twenty-one (58%) were men and 15 (42%) women. The mean age was 65 years. The leukocytes peaked on the 1st POD with a mean of 13,826 u/mm³, and decreased to 8,266 u/mm³ by the 5th POD. The bacilliforms peaked on the 1st POD with a maximum value of 1.48%. CRP reached its maximum level on the 3rd POD with a mean of 144.64 mg/l±44.84. Preoperative hematocrit (HCT) was 35% and 33.67% by the 5th POD. Hemoglobin, showed similar values. Leukocytes increased during the 1st POD but reached normal values by the 5th POD. CRP peaked on the 3rd POD but did not reach normal values by the 5th POD.
    12/2014; 27(4):234-6. DOI:10.1590/S0102-67202014000400002
  • Revista Chilena de Cirugia 06/2014; 66(3):224-230. DOI:10.4067/S0718-40262014000300006 · 0.18 Impact Factor
  • Revista Chilena de Cirugia 02/2014; 66(1):15-21. DOI:10.4067/S0718-40262014000100003 · 0.18 Impact Factor
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    ABSTRACT: Background: Sleeve gastrectomy is one of the most commonly used bariatric surgical procedures. Aim: To analyze clinical and laboratory manifestations and management of leaks after sleeve gastrectomy. Material and Methods: Analysis of 20 patients with leaks out of 785 operated subjects (2.5%). Symptoms and laboratory changes were analyzed. Leak was classified according to the postoperative day of appearance, its location and its severity. Results: Fever, abdominal pain and tachycardia were the main clinical manifestations of the leak. Patients also had leukocytosis and an elevated C reactive protein. In 12 (60%) patients, the leak appeared within the first four postoperative days, in three, it appeared between the fifth and ninth postoperative day and in five, after the tenth postoperative day. In 90%, the leak was near the cardias. Eleven patients were reoperated and nine were managed conservatively. The leak closed 34 and 55 days after its appearance among patients managed conservatively or surgically, respectively. Conclusions: Leaks are a serious complication of sleeve gastrectomy and require a close surveillance of patients.
    08/2013; 65(4):315-320. DOI:10.4067/S0718-40262013000400005
  • 01/2013; 65(5):402-408. DOI:10.4067/S0718-40262013000500006
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    ABSTRACT: Background: Besides the weight reducing effects of gastric bypass, it is also a good antireflux procedure since there is no acid production by the gastric pouch and there is no duodenal reflux due to the presence of a Roux en Y. Aim: To describe the effect of gastric bypass on Barrett esophagus among patients with morbid obesity. Material and Methods: Among 896 patients subjected to gastric bypass, 14 patient with a Barrett esophagus diagnosed with endoscopy and biopsy, were followed. A new endoscopy was performed one to 30 months after the surgical procedure. Results: Short (< = 30 mm) and long segment (> = 31 mm) Barrett esophagi were present in eight and six patients, respectively. Gastroesophageal reflux symptoms relieved in 70% of these cases in a mean lapse of 6.5 months. There was regression from intestinal metaplasia to car-dial mucosa in six patients (75%) with short-segment, and in one patient (16%) with long-segment Barrett esophagus. Conclusions: Gastric bypass in patients with morbid obesity and Barrett esophagus is a very good antireflux operation. This was proved by the disappearance of symptoms in almost all patients and by the regression of the intestinal metaplasia which is time and length dependent.
    04/2012; 64(2):155-160. DOI:10.4067/S0718-40262012000200008
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    Ana María Burgos L
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    ABSTRACT: Background: Obesity is a severe disease whose prevalence continues to increase. Resective gastric bypass is one of the surgical procedures used in our center in patients with obesity, but like other techniques is not without complications, and the leak is one of the most serious. Aim: To determine by a prospective study the incidence, clinical presentation, postoperative course and treatment of obese patients with leaks after open resective gastric bypass. Material and Methods: From August 1999 to December 2009, 900 morbidly obese patients underwent open resective Roux-en-Y gastric bypass at the Hospital of the University of Chile. The use of drains and leak test with methylene blue during surgery, such as barium x-ray were performed in all patients as part of a protocol. Clinical signs, development, testing and treatment were recorded. Results: 36 patients (4%) developed leaks. Of the 900 patients died 3 (0.33%). Fever and tachycardia were the predominant symptoms. The diagnosis was made by imaging studies in 19 cases (52.7%). The leaks were mostly between 5 th and 9 th postoperative day. The most frequent location of the leak was at the gastrojejunal anastomosis (58.3%). Treatment was medical in 24 patients (66.7%), requiring re-operation only in 12 cases. The average time of closure of the leak was 35.5 days and the patients were hospitalized a total of 33.7 days on average. Conclusions: In the series studied after resective gastric bypass the leak is presented in 4% of patients. Fever and tachycardia are useful signs to suspect a leak. The early detection of leaks is determinant to reach the best evolution of the patient and success in the treatment.
    02/2012; 64(1):52-62. DOI:10.4067/S0718-40262012000100009
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    Revista medica de Chile 11/2011; 139(11):1414-1420. DOI:10.4067/S0034-98872011001100004 · 0.37 Impact Factor
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    ABSTRACT: There is a paucity of information about the long term effects of gastric bypass for morbid obesity. To study the evolution of weight and complications of obesity, seven to 10 years after gastric bypass surgery. One hundred eighteen subjects with morbid obesity, aged 15 to 66 years (103 women), were followed for a mean of 94 months after surgery. Body weight, fasting blood glucose, total cholesterol, triglycerides and hemoglobin were measured before surgery and during follow up. At 24 months of follow up, all patients lost weight and there was a mild weight increase at 94 months, that paralleled the preoperative body mass index. Diabetes, hypercholesterolemia and hypertriglyceridemia subsided in 95, 87 and 94% of cases, respectively. Twenty percent of patients had mild anemia and 11% moderate or severe anemia. No patient recovered the preoperative weight. Weight reducing effects of gastric bypass are maintained after 94 months of follow up with the expected health benefits.
    Revista medica de Chile 11/2011; 139(11):1414-20. · 0.37 Impact Factor
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    ABSTRACT: This is a review of publications comparing the results of medical and surgical treatment of morbid obesity. An overall conclusions is that the frequency of cardiovascular complications or cancer is higher among patients receiving medical treatment. Surgical treatment is associated with a better weight loss, reduction in complications and quality of life. Mortality risk decreases significantly after surgical treatment, when compared with patients receiving medical therapy. Therefore, management of morbid obesity should be carried out by multidisciplinary teams with experience on gastrointestinal surgery. In this way the complications and mortality of bariatric surgery would be minimized.
    Revista medica de Chile 01/2009; DOI:10.4067/S0034-98872009000400016 · 0.37 Impact Factor
  • Ana María Burgos L, Attila Csendes J, Karin Papapietro V
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    ABSTRACT: The incidence of morbid obesity is increasing and gastric bypass is the most effective surgical treatment. To assess the long term results of resection gastric bypass among morbidly obese patients aged less than 18 and over 65 years in terms of weight loss and correction comorbidities. From August 1999 to December 2006, 712 patients with morbid obesity were subjected to open resection gastric bypass. A group of 12 patients, aged less than 18 years and a second group of 8 patients aged more 65 years were selected to prospectively assess weight loss, complications and correction of associated comorbidities. In the first group body mass index (BMI) decreased from 45+/-6.7 kg/m2 to 27.7+/-3.2 kg/m2, in a follow-up period of 22.9+/-8.4 months. All comorbidities disappeared or improved. A single patient (8.3%) had an incisional hernia. Among the second group, BMI decreased from 40.6+/-5.4 kg/m2 to 28.4+/-4.4 kg/m2, in a follow-up period of 26.6+/-15.9 months. All obesity comorbidities disappeared. Three patients (37.5%) presented incisional hernias. No patient died or had postoperative complications. In both groups resection gastric bypass was safe, obtained an appropriate weight loss and corrected all associated comorbidities to obesity.
    Revista medica de Chile 11/2008; 136(10):1247-54. · 0.37 Impact Factor
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    ABSTRACT: Introducción: La obesidad está asociada a múltiples comorbilidades, entre ellas la patología respiratoria, que puede verse incrementada después de realizar cirugía bariátrica. Objetivo: Evaluar en forma prospectiva las alteraciones en la función pulmonar pre y postoperatorias, de pacientes obesos mórbidos operados con bypass gástrico por vía laparotómica y laparoscópica. Material y Método: 39 pacientes consecutivos con obesidad mórbida sometidos a bypass gástrico, divididos en 2 grupos: el primero formado por 24 pacientes operados por vía laparotómica y el segundo por 15 pacientes operados por vía laparoscópica, con evaluación pre y postoperatorias de radiografía de tórax, espirometría y gases arteriales. Resultados: En el postoperatorio un incremento significativo de atelectasias, presentándose en el 1er grupo con cirugía abierta en 45,8% de casos y en el 2° grupo con cirugía laparoscópica en el 33,3%. Aumento del patrón restrictivo a 41,7% en el 1er grupo y 33,3% de casos en el 2° grupo. Una disminución en ambos grupos de la capacidad vital forzada (CVF) y alteraciones en los gases arteriales con descenso mantenido de PaCO2 en 36,5 mmHg en el 1er grupo y 33,8 mmHg en el 2° grupo. Conclusiones: Con la cirugía del bypass gástrico en obesos mórbidos, por vía laparotómica o laparoscópica se producen cambios en la función pulmonar postoperatoria, presentándose atelectasia, patrones espirométricos restrictivos, capacidad vital forzada disminuida y alteraciones en la PaO2 y PaCO2. Esta última tiene significación estadística.
    01/2008; DOI:10.4067/S0718-40262008000600006
  • Ana María Burgos L, Attila Csendes J, Karin Papapietro V
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    ABSTRACT: Background: The incidence of morbid obesity is increasing and gastric bypass is the most effective surgical treatment, Aim: To assess the long term results of resection gastric bypass among morbidly obese patients aged less than 18 and over 65 years in terms of weight loss and correction comorbidities. Material and methods: From August 1999 to December 2006, 712 patients with morbid obesity were subjected to open resection gastric bypass. A group of 12 patients, aged less than 18 years and a second group of 8 patients aged more 65 years were selected to prospective v assess weight loss, complications and correction of associated comorbidities. Results: In the first group body mass index (BMI) decreased from 45+/-6.7 kg/m(2) to 27.7+/-3.2 kg/m(2) in a follow-up period of 22.9+/-8.4 months. All comorbidities disappeared or improved. A single patient (8-3%) bad an incisional bernia. Among the second group, BMI decreased from 40.6+/-5.4 kg/m(2) to 28.4+/-4.4 kg/m(2) in a follow-up period of 26.6+/-15.9 months. All obesity comorbidities disappeared. Three patients (37.5%) presented incisional hernias, No patient died or bad postoperative complications. Conclusions. In both groups resection gastric bypass was safe, obtained an appropriate weight loss and corrected all associated comorbidities to obesity.
    Revista medica de Chile 01/2008; DOI:10.4067/S0034-98872008001000003 · 0.37 Impact Factor
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    ABSTRACT: Surgeons and radiologists commonly believe that common bile duct dilates after cholecystectomy. To measure common bile tract diameter before and 12 years after a cholecystectomy for cholelithiasis. Prospective study of 85 patients (aged 20 to 71 years, 68 females) subjected to a cholecystectomy and followed for 12 years. AH were asymptomatic and had abdominal ultrasound to measure common bile duct diameter, seven days before and 12 years after the surgical procedure. Common bile duct diameter before and 12 years after surgery was 4.6+0.9 and 5.0+1.8 cm respectively (p=NS) among 69 patients aged inverted exclamation markess than 60 years. The figures for 16 patients aged more than 60 years were 5+0.8 and 6.7+1.9 (p <0.03). Among patients below 60 years of age there is no significant change in bile duct diameter 12 years after surgery. In subjects over 60 years of age there is a significant increase in this diameter.
    Revista medica de Chile 06/2007; 135(6):735-42. · 0.37 Impact Factor
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    ABSTRACT: Background: Surgeons and radiologists commonly believe that common bile duct dilates after cholecystectomy. Aim: To measure common bile tract diameter before and 12 years after a cholecystectomy for cholelithiasis. Material and methods: Prospective study of 85 patients (aged 20 to 71 years, 68 fenmales) subjected to a cholecystectomy and followed for 12 years. All were asymptomatic and had abdominal ultrasound to measure common bile duct diameter, seven days before and 12 years after the surgical procedure. Results: Common bile duct diameter before and 12 years after surgery was 4.6±0.9 and 5.0±1.8 cm respectively (p=NS) among 69 patients aged less than 60 years. The figures for 16 patients aged more than 60 years were 5±0.8 and 6.7±1.9 (p <0.03). Conclusions: Among patients below 60 years of age there is no significant change in bile duct diameter 12 years after surgery. In subjects over 60 years of age there is a significant increase in this diameter.
    Revista medica de Chile 01/2007; DOI:10.4067/S0034-98872007000600007 · 0.37 Impact Factor
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    ABSTRACT: Bariatric surgery is a complex procedure not exempt of complications. To assess mortality and complications of excisional gastric bypass among morbidly obese subjects. Prospective analysis of 684 morbid obese patients (age range 14-70 years, 525 females) subjected to an excisional gastric bypass. Major postoperative complications and mortality were registered. Mean body mass index (BMI) of the subjects was 43.7 kg/m2. One hundred sixty two patients had a BMI between 35 and 39.9 kg/m2, 419 had a BMI between 40 and 49.9 kg/m2 and 103 had a BMI over 50 kg/m2. Two patients with a BMI of 52 and 56 kg/m2 respectively, died in the postoperative period (0.3%). Thirty six patients had major complications. Anastomotic fistula was the most common complication in 12 patients (1.7%). Fourteen patients required a new operation due to complications. None of these died. The mean operative volume of the surgical team was 124 patients per year. Excisional gastric bypass has a low rate of mortality and complications, if the surgical team operates a large volume of patients.
    Revista medica de Chile 08/2006; 134(7):849-54. · 0.37 Impact Factor
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    ABSTRACT: Obesity is an important risk for pathological gastroesophageal reflux. To assess the effects of gastric bypass on obese subjects with erosive esophagitis. Sixty two morbid obese subjects (aged 16 to 70 years, 41 females) with erosive esophagitis at the moment of surgery were studied. These patients were subjected to a gastric bypass with gastric resection. They were followed with upper gastrointestinal endoscopy every one year, looking for the presence of erosions or ulcers in the distal esophagus. The mean follow up period was 21 months. Prior to surgery all patients had heartburn or regurgitation and at two years after surgery, 97% were asymptomatic. Esophagitis was found in 97 and 6.5% before and after surgery, respectively. Two patients had an esophageal ulcer, that healed on follow up endoscopy. There was a 72% reduction of overweight on late follow up. Gastric bypass is effective to control pathological gastroesophageal reflux in patients with morbid obesity.
    Revista medica de Chile 04/2006; 134(3):285-90. · 0.37 Impact Factor
  • Revista medica de Chile 01/2001; 129(9). DOI:10.4067/S0034-98872001000900009 · 0.37 Impact Factor

Publication Stats

13 Citations
4.10 Total Impact Points

Institutions

  • 2007–2014
    • University of Santiago, Chile
      • Departamento Clínico de Cirugía
      CiudadSantiago, Santiago, Chile
  • 2007–2013
    • Hospital Clínico Universidad de Chile
      CiudadSantiago, Santiago, Chile
  • 2008
    • University of Chile
      • Departamento de Cirugía
      Santiago, Region Metropolitana de Santiago, Chile
  • 2006
    • Hospital Clinico Fusat
      CiudadSantiago, Santiago, Chile