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1.
Surg Endosc ; 28(1): 156-63, 2014 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-23982648

RESUMEN

BACKGROUND: Due to the failure of the "old Mason loop," the mini-gastric bypass (MGB) has been viewed with skepticism. During the past 12 years, a growing number of authors from around the world have continued to report excellent short- and long-term results with MGB. METHODS: One university center, three regional hospitals, and two private hospitals participated in this study. From July 2006 to December 2012, 475 men (48.8 %) and 499 women (51.2 %) underwent 974 laparoscopic MGBs. The mean age of these patients was 39.4, and their preoperative body mass index was 48 ± 4.58 kg/m(2). Type 2 diabetes mellitus (T2DM) affected 224 (22.9 %) of the 974 patients, whereas 291 of the 974 patients (29.8 %) presented with hypertension. The preoperative gastrointestinal status was explored in all the patients through esophagogastroduodenoscopia. The major end points of the study were definitions of both MGB safety and efficacy in the long term as well as the endoscopic changes in symptomatic patients eventually produced by surgery. RESULTS: The rate of conversion to open surgery was 1.2 % (12/974), and the mortality rate was 0.2 % (2/974). The perioperative morbidity rate was 5.5 % (54/974), with 20 (2 %) of the 974 patients requiring an early surgical revision. The mean hospital length of stay was 4.0 ± 1.7 days. At this writing, 818 patients are being followed up. Late complications have affected 74 (9 %) of the 818 patients. The majority of these complications (66/74, 89.1 %) have occurred within 1 year after surgery. Bile reflux gastritis was symptomatic, with endoscopic findings reported for 8 (0.9 %) and acid peptic ulcers for 14 (1.7 %) of the 818 patients. A late revision surgery was required for 7 (0.8 %) of the 818 patients. No patient required revision surgery due to biliary gastritis. At 60 months, the percentage of excess weight loss was 77 ± 5.1 %, the T2DM remission was 84.4 %, and the resolution of hypertension was 87.5 %. CONCLUSIONS: Despite initial skepticism, this study, together with many other large-scale, long-term similar studies from around the world (e.g., Taiwan, United States, France, Spain, India, Lebanon) demonstrated the MGB to be a short, simple, low-risk, effective, and durable bariatric procedure.


Asunto(s)
Derivación Gástrica/métodos , Laparoscopía/métodos , Obesidad Mórbida/cirugía , Adulto , Índice de Masa Corporal , Comorbilidad , Conversión a Cirugía Abierta , Diabetes Mellitus Tipo 2/epidemiología , Femenino , Estudios de Seguimiento , Derivación Gástrica/mortalidad , Humanos , Hipertensión/epidemiología , Italia , Laparoscopía/mortalidad , Tiempo de Internación , Masculino , Obesidad Mórbida/epidemiología , Reoperación , Tasa de Supervivencia , Resultado del Tratamiento , Estados Unidos , Pérdida de Peso
2.
Obes Surg ; 22(6): 956-66, 2012 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-22438220

RESUMEN

The prevalence of obesity continues to escalate in the USA; however, there is no consensus regarding the optimal therapy for obesity. For the vast majority of severely obese patients, conventional medical therapies (i.e., diet, exercise, behavioral counseling) often fail over the long term. Existing pharmacotherapy adjunctive to behavioral therapy has limited effectiveness and an imperfect safety record. In contrast, bariatric surgery has a high degree of weight loss efficacy, yet only a small fraction of the qualifying obese population undergoes these procedures because of the associated perioperative risks and potential late complications. In addition, the role of bariatric surgery is unclear in certain patient populations, such as patients with lower body mass index (BMI, 30-35 kg/m(2)), the high-risk super-super obese patients (BMI > 60), the morbidly obese adolescent, and obese patients requiring weight reduction in preparation for other procedures, such as orthopedic, transplant, or vascular surgeries. In these circumstances, there is a need for an effective but less invasive treatment to bridge the gap between medical and surgical therapy. This review examines current treatment outcomes, identifies prominent areas of unmet clinical needs, and provides an overview of two minimally invasive "temporary procedures for weight loss" that may eventually address some of the unmet needs in obesity management.


Asunto(s)
Terapia Conductista/métodos , Derivación Gástrica/métodos , Evaluación de Necesidades , Obesidad Mórbida/rehabilitación , Fármacos Antiobesidad/uso terapéutico , Depresores del Apetito/uso terapéutico , Terapia Conductista/tendencias , Índice de Masa Corporal , Ejercicio Físico , Femenino , Conductas Relacionadas con la Salud , Humanos , Masculino , Obesidad Mórbida/tratamiento farmacológico , Obesidad Mórbida/cirugía , Estados Unidos/epidemiología
3.
Artículo en Inglés | MEDLINE | ID: mdl-21574080

RESUMEN

During feed preparation at feed mills or during feed mixing in bins at farms, the accidental contamination of feed at trace levels by veterinary drug residues, commonly known as carry-over, can accidentally but frequently occur. To evaluate the concentrations of residual antimicrobials in poultry edible tissues, due to contaminated feed, sulfadimethoxine and doxycycline were administered for 10 days to chickens in poultry feed incurred at the contamination levels frequently found during national feed monitoring programmes (1-5 mg kg(-1)). Sulfadimethoxine and doxycycline residual concentrations detected in muscle (

Asunto(s)
Alimentación Animal/análisis , Pollos/metabolismo , Doxiciclina/análisis , Contaminación de Alimentos/análisis , Sulfadimetoxina/análisis , Alimentación Animal/toxicidad , Animales , Doxiciclina/toxicidad , Residuos de Medicamentos/análisis , Residuos de Medicamentos/toxicidad , Contaminación de Alimentos/legislación & jurisprudencia , Inocuidad de los Alimentos , Humanos , Italia , Límite de Detección , Concentración Máxima Admisible , Sulfadimetoxina/toxicidad , Distribución Tisular , Drogas Veterinarias/análisis , Drogas Veterinarias/toxicidad
4.
Semin Laparosc Surg ; 9(2): 105-14, 2002 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-12152153

RESUMEN

The introduction of laparoscopic adjustable silicone gastric banding (LASGB) has recently revolutionized gastric restrictive procedures in the treatment of morbid obesity. We analysed the short and long term results of this minimally invasive bariatric procedure. A total of 652 patients with a body mass of (median) 45 kg/m(2) were treated. There were only minor preoperative incidents. One patient died more than one month after the procedure. Early postoperative complications included 2 gastric perforations caused by a nasogastric tube and one early slipping of the band. Late complications occurred in 7% of the patients: 25 patients suffered a pouch dilation, 2 patients had gastric erosion by the band; 18 patients had port complications requiring reoperation. Loss of excess weight was 62% at 2 years. Laparoscopic adjustable gastric banding is a safe and effective treatment for morbid obesity. The most frequent complication is pouch dilation. Further study is warranted for the evaluation of long term results.


Asunto(s)
Gastroplastia/métodos , Laparoscopía , Obesidad Mórbida/cirugía , Estómago/cirugía , Adolescente , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias , Elastómeros de Silicona , Resultado del Tratamiento , Pérdida de Peso
5.
Obes Surg ; 12(3): 385-90, 2002 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-12082893

RESUMEN

BACKGROUND: Laparoscopic adjustable gastric banding (LAGB) with the Lap-Band has been our first choice operation for morbid obesity since September 1993. Results in terms of complications and weight loss are analyzed. METHODS: 830 consecutive patients (F 77.9%) underwent LAGB. Initial body weight was 127.9 +/- SD 23.9 kg, and body mass index (BMI) was 46.4 +/- 7.2 kg/m2. Mean age was 37.9 (15-65). Steps in LAGB were: 1) establishment of reference points for dissection (equator of the balloon inflated with 25 cc air and left crus); 2) creation of a retrogastric tunnel above the bursa omentalis; 3) creation of "virtual" pouch; 4) embedding the band. RESULTS: Mortality was 0, conversion 2.7%, and follow-up 97%. Major complications requiring reoperation developed in 3.9% (36 patients). Early complications were 1 gastric perforation (requiring band removal) and 1 gastric slippage (requiring repositioning). Late complications included 17 stomach slippages (treated by band repositioning in 12 and band removal in 5), 9 malpositions (all treated by band repositioning), 4 gastric erosions by the band (all treated by band removal), 3 psychological intolerance (requiring band removal), and 1 HIV positive (band removed). A minor complication requiring reoperation in 91 patients (11%) was reservoir leakage. 20% of patients who had % excess weight loss < 30 had lost compliance to dietetic, psychological and surgical advice. BMI declined significantly from the initial 46.4 +/- 7.2 to 37.3 +/- 6.8 at 1 year, 36.4 +/- 6.9 at 2 years, 36.8 +/- 7.0 at 3 years, and 36.4 +/- 7.8 at 5 years. CONCLUSION: LAGB is a relatively safe and effective procedure.


Asunto(s)
Vendajes/efectos adversos , Gastroplastia/efectos adversos , Laparoscopía/efectos adversos , Obesidad Mórbida/cirugía , Selección de Paciente , Complicaciones Posoperatorias , Adolescente , Adulto , Anciano , Índice de Masa Corporal , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Obesidad Mórbida/fisiopatología , Factores de Tiempo , Pérdida de Peso/fisiología
6.
Semin Laparosc Surg ; 7(1): 55-65, 2000 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-10735916

RESUMEN

Until now, for treatment of morbid obesity in the long term, surgery remained as the final option. For 40 years, surgeons looked at the best procedure. Among the restrictive procedures (gastroplasty), the laparoscopic adjustable silicone banding is the least invasive surgical treatment of morbid obesity. Between October 1992 and January 1998, we performed this procedure on 652 patients. Median body mass index was 45 (range, 35-65). Median hospital stay was 3 days (range, 2-10 days). The mean operative time was 80 minutes (range, 40-240 minutes). Four patients (0.6%) presented early complications: bleeding (1 patient), gastric perforation (2 patients), and pneumonia (1 patient). Forty-seven (7.2%) patients presented late complications and needed to be reoperated. There is one case of mortality. Loss of mass body weight was 62% in 2 years. According to these results, laparoscopic adjustable silicone gastric banding seems to be a safe and efficient technique.


Asunto(s)
Gastroplastia/métodos , Laparoscopía/métodos , Adolescente , Adulto , Anciano , Índice de Masa Corporal , Femenino , Gastroplastia/efectos adversos , Humanos , Laparoscopía/efectos adversos , Masculino , Persona de Mediana Edad , Obesidad Mórbida/cirugía , Siliconas , Pérdida de Peso
7.
Obes Surg ; 10(6): 569-77, 2000 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-11175968

RESUMEN

BACKGROUND: A moderate weight loss is known to improve the lipid levels in simple obesity. The extent of weight loss needed to achieve a clinically meaningful effect on lipid abnormalities in morbid obesity is little understood. We analyzed the effects of different levels of body weight loss on the lipid levels of morbidly obese patients operated with the LAP-BAND System. METHODS: 225 morbidly obese patients (172 F and 53 M) in which a complete lipid profile has been collected both before and 12-18 months after surgery were studied. The changes of the lipid profile were analyzed according to different levels of percent weight loss (%WL: <10%, 10-20%, 20-30%, >30%). RESULTS: Mean weight loss was 30.7+/-15.2 kg, corresponding to a 23.1+/-9.7% reduction of body weight. A large variability in the weight loss was observed. A significant difference in the change of the lipid parameters between the group with <10%WL and the group with 10-20%WL was observed for total-cholesterol (+10.0+/-17.2% vs -0.7+/-14.7%; p<0.05), for the LDL (+18.7+/-26.3% vs +3.1+/-22.9%; p<0.05), and for the triglycerides (+7.7+/-26.3% vs -21.9+/-25.4%; p<0.05). No further significant differences were found between the two groups with greater weight loss (20-30%WL and >30%WL) and the group with 10-20%WL, the only exception being the percent change in triglycerides levels, i.e. higher in the group with %WL >30 (-33.6+/-31.5% vs -21.9+/-25.4%; p<0.05). CONCLUSION: A moderate weight loss of 10-20% of initial body weight produced the maximal effects on the lipid levels in morbid obesity.


Asunto(s)
Gastrostomía , Lipoproteínas/sangre , Obesidad Mórbida/sangre , Pérdida de Peso , Adulto , HDL-Colesterol/sangre , LDL-Colesterol/sangre , Femenino , Humanos , Masculino , Persona de Mediana Edad , Triglicéridos/sangre
8.
Obes Surg ; 8(5): 500-4, 1998 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-9819080

RESUMEN

BACKGROUND: The definition of success and failure of a bariatric procedure should include weight loss as well as improvement in comorbidity and quality of life assessment. The Bariatric Analysis and Reporting Outcome System (BAROS), introduced by Oria and Moorhead in 1997, seems to provide a standard for comparison in the surgical treatment of morbid obesity. METHODS: 180 morbidly obese and super-obese patients, who underwent laparoscopic gastric banding (lap-band) at our institutions and had a follow-up >18 months (19-55 months) were evaluated with BAROS. RESULTS: The patients were divided into four outcome groups (failure, fair, good, and excellent) based on a scoring table that adds or subtracts points while evaluating three main areas: percentage of excess weight loss, changes in medical conditions, and assessment of quality of life. Points were deducted for complications and reoperative surgery. CONCLUSIONS: The BAROS outcome system has proved to be a useful instrument in evaluating midterm results in our series of lap-band patients.


Asunto(s)
Gastroplastia , Laparoscopía , Obesidad Mórbida/cirugía , Evaluación de Procesos y Resultados en Atención de Salud/métodos , Índice de Severidad de la Enfermedad , Adolescente , Adulto , Anciano , Femenino , Gastroplastia/estadística & datos numéricos , Humanos , Italia , Laparoscopía/estadística & datos numéricos , Masculino , Persona de Mediana Edad , Evaluación de Procesos y Resultados en Atención de Salud/estadística & datos numéricos , Calidad de Vida , Encuestas y Cuestionarios , Insuficiencia del Tratamiento , Pérdida de Peso
9.
Obes Surg ; 7(4): 352-8, 1997 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-9730523

RESUMEN

BACKGROUND: The laparoscopic application of LAP-BAND is gaining widespread acceptance as a gastric restrictive procedure. At the same time the reported morbidities (i.e., gastric perforation, stomach and/or band slippage) are cause for some concern. METHODS: From September 1993 until May 1997, 260 patients underwent LAP-BAND at the Department of Surgery at the University of Padova, Italy. RESULTS: The mortality rate was zero and the morbidity rate requiring reoperation was 3.4% (stomach slippage, gastric perforation, erosion). In order to avoid complications the key points of the technique are reviewed: (1) reference points for dissection (equator of the balloon, left crus); (2) retrogastric tunnel within the layers of the phrenogastric ligament; (3) embedment of the band; (4) proper outlet calibration; and (5) retention sutures. CONCLUSIONS: Attention to technical details is of paramount importance for a safe, standardized and effective operation.


Asunto(s)
Gastroplastia/instrumentación , Laparoscopía/métodos , Siliconas , Adolescente , Adulto , Anciano , Disección , Falla de Equipo , Femenino , Estudios de Seguimiento , Gastroplastia/efectos adversos , Gastroplastia/métodos , Humanos , Complicaciones Intraoperatorias/prevención & control , Laparoscopía/efectos adversos , Tiempo de Internación , Ligamentos/anatomía & histología , Ligamentos/cirugía , Masculino , Persona de Mediana Edad , Epiplón/cirugía , Complicaciones Posoperatorias/prevención & control , Reoperación , Estómago/lesiones , Estómago/patología , Técnicas de Sutura
10.
Obes Surg ; 7(6): 505-12, 1997 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-9730509

RESUMEN

OBJECTIVE: To evaluate the effects of a new timing strategy of band adjustment on the short-term outcome of obese women operated with adjustable silicone gastric banding. SUBJECTS: The outcome of 30 women without binge-eating disorder operated with laparoscopic adjustable silicone gastric banding with a wider intraoperatory band calibration (LAP-BAND) was compared to that of 30 body mass index-matched women without binge-eating disorder previously operated with adjustable silicone gastric banding (ASGB) applied by laparotomy with the usual intraoperatory band calibration. The patients were evaluated 3, 6 and 12 months after surgery. MEASUREMENTS: (1) weight loss; (2) total daily energy intake; (3) percent as liquid, soft or solid food; (4) vomiting frequency; (5) rate of postoperative percutaneous band adjustments; (6) rate of band-related complications. RESULTS: Both the weight loss and the daily energy intake did not differ between patients with LAP-BAND and patients with ASGB. After surgery, the patients with LAP-BAND ate more solid food and less liquid food than the patients with ASGB. Vomiting frequency was higher in patients with ASGB than in patients with LAP-BAND. The total number of percutaneous band adjustments was higher in women with LAP-BAND than in women with ASGB. Band inflation because of weight stabilization was performed in six (20.0%) women with ASGB and in 19 (63.3%) women with LAP-BAND. Neostoma stenosis occurred in one woman with ASGB, but in none of the women with LAP-BAND. One patient with LAP-BAND presented band slippage. CONCLUSIONS: The wider intraoperatory band calibration performed in patients with LAP-BAND did not reduce the short-term efficacy of adjustable silicone gastric banding. This new timing strategy of band adjustment required more postoperative percutaneous band inflations, but it improved the eating pattern of the patients (low vomiting frequency and high intake of solid food).


Asunto(s)
Ingestión de Alimentos/fisiología , Gastroplastia/métodos , Laparoscopía , Obesidad/cirugía , Vómitos/prevención & control , Adulto , Índice de Masa Corporal , Peso Corporal , Calibración , Estudios de Casos y Controles , Constricción Patológica/etiología , Ingestión de Energía , Femenino , Estudios de Seguimiento , Alimentos , Gastroplastia/efectos adversos , Gastroplastia/instrumentación , Humanos , Cuidados Intraoperatorios , Laparoscopía/métodos , Laparotomía , Siliconas , Estomas Quirúrgicos/efectos adversos , Factores de Tiempo , Resultado del Tratamiento , Pérdida de Peso
11.
Minerva Chir ; 51(7-8): 617-20, 1996.
Artículo en Italiano | MEDLINE | ID: mdl-8975167

RESUMEN

Chondroid syringoma, previously called mixed tumor of the skin is a fairly uncommon type of sweat gland tumor, most often diagnosed in the sixth and seventh decade of life. It presents as a well encapsulated dermal or subcutaneous module and it is most frequently found in the skin of the head and neck. The neoplasm is asymptomatic and is featured by a slow rate of growth. At histopathological examination, the tumor consists of an epithelial component, with glandular or ductal differentiation, either eccrine or apocrine, and a stromal component with myxoid or chondroid elements. Surgical removal is the treatment of choice and recurrence may occur. Malignant chondroid syringoma has been reported rarely, most frequently arising in previously benign lesions. They behave as lethal tumors and often metastasize to the regional lymph nodes and lung. We report a most unusual case of a mixed tumor of the skin localized in the sacral area associated with a peripheral low grade malignant component of the adenocystic type. Association of these two types of sweat gland tumors has never been previously described, to our knowledge.


Asunto(s)
Adenoma Pleomórfico/patología , Carcinoma Adenoide Quístico/patología , Neoplasias Primarias Múltiples/patología , Neoplasias Cutáneas/patología , Adenoma Pleomórfico/química , Antígenos de Neoplasias/análisis , Biomarcadores de Tumor/análisis , Carcinoma Adenoide Quístico/química , Femenino , Humanos , Persona de Mediana Edad , Neoplasias Primarias Múltiples/química , Neoplasias Cutáneas/química
12.
Int J Obes Relat Metab Disord ; 20(6): 539-46, 1996 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-8782730

RESUMEN

OBJECTIVE: To analyse the relationships between eating pattern, vomiting frequency, weight loss and the rate of band related complications in morbidly obese patients undergoing Adjustable Silicone Gastric Banding (ASGB). SUBJECTS: 80 morbidly obese patients (57 females and 23 males) consecutively operated by ASGB were evaluated both before and 3, 6 and 12 months after ASGB. Ten patients (12.5%) had binge eating disorder and were analysed separately. MEASUREMENTS: (1) weight loss expressed as percentage of overweight, (2) total daily energy intake, (3) percentage of energy as lipids, carbohydrates and proteins, (4) percent as liquid, soft or solid foods and (5) vomiting frequency. RESULTS: ASGB induced a highly significant reduction of total daily energy intake and percent as solid foods, without significant changes in macronutrient distribution. There was an inverse relationship between vomiting frequency and the intake of solid foods. Non-binge eaters with more vomiting ate less solid food and lost more weight than patients without vomiting. The frequency of neostoma stenosis was higher in patients with high vomiting frequency than in patients with no vomiting. Patients with binge eating disorder had a significantly higher vomiting frequency and a five-fold higher frequency of neostoma stenosis than patients without binge eating disorder. However, the percentage of overweight lost did not differ between patients with and without binge eating. CONCLUSIONS: Vomiting is a major determinant of global outcome after ASGB. The vomiting frequency in the first months after ASGB was associated with eating pattern, the frequency of neostoma stenosis and possibly the rate of weight loss during the first year of follow-up.


Asunto(s)
Conducta Alimentaria/fisiología , Gastroplastia/normas , Obesidad Mórbida/fisiopatología , Obesidad Mórbida/cirugía , Adolescente , Adulto , Antropometría , Índice de Masa Corporal , Carbohidratos de la Dieta/normas , Grasas de la Dieta/normas , Proteínas en la Dieta/normas , Ingestión de Energía/fisiología , Trastornos de Alimentación y de la Ingestión de Alimentos/epidemiología , Trastornos de Alimentación y de la Ingestión de Alimentos/fisiopatología , Femenino , Estudios de Seguimiento , Gastroplastia/efectos adversos , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Obesidad Mórbida/epidemiología , Siliconas , Resultado del Tratamiento , Vómitos/epidemiología , Vómitos/etiología , Pérdida de Peso/fisiología
13.
Obes Surg ; 5(4): 364-371, 1995 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-10733827

RESUMEN

BACKGROUND: Kuzmak's Adjustable Silicone Gastric Banding (ASGB) is the least invasive operation available for morbid obesity, and it is one of the more effective. Based on the know-how gained from performing more than 250 'open' procedures, we have developed an original laparoscopic technique, whose main steps are pouch measurement, limited dissection along the lesser and the greater curvature and the application of the retention sutures. METHODS: From September 1993 through October 1994, 30 morbidly obese patients underwent laparoscopic ASGB. RESULTS: Mean operative time was 2 h and the postoperative stay 2-3 days. Only one major perioperative complication (stomach slippage) was observed. The weight loss achieved, reported as a variation of Body Weight, Body Mass Index, per cent Ideal Body Weight and per cent Excess Weight Loss was similar to that obtained with the open procedure. CONCLUSION: This new approach is a major achievement in bariatric surgery, because it combines the minimal invasiveness of laparoscopy with the reversibility and adjustability of ASGB.

15.
Int J Obes Relat Metab Disord ; 19(4): 227-33, 1995 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-7627245

RESUMEN

OBJECTIVE: To analyze the relationship between visceral fat accumulation and resting energy expenditure in obese women and to evaluate the effects of a severe weight loss both on energy expenditure and on fat distribution. DESIGN: Twelve premenopausal women, aged 19-50 years, undergoing adjustable silicone gastric banding (ASGB) for morbid obesity participated at the study. The patients were evaluated twice. The baseline evaluation was performed immediately before surgery. After surgery, a diet specifically developed for patients submitted to gastric restriction (2.5 MJ/day) was given to the patients. The second evaluation was performed 6 months after surgery. MEASUREMENTS: Resting metabolic rate (RMR) was determined by indirect calorimetry. Total fat area (TFA), visceral fat area (VFA) and subcutaneous fat area (SFA) were measured by abdominal computed tomography. Fat mass (FM) and fat free mass (FFM) were derived by bioelectrical impedance analysis. RESULTS: At baseline, RMR was positively related to VFA (r = 0.60, P < 0.05). ASGB induced a highly significant weight loss of 24.4 +/- 9.0 kg. This weight reduction was mainly due to a loss of FM (68.5 +/- 10.8 vs 48.5 +/- 9.2 kg, P < 0.001), whereas FFM was only slightly reduced (52.6 +/- 4.0 vs 47.9 +/- 4.6 kg, P < 0.05). The BMI reduction was positively related to the baseline BMI and FM values (r = 0.61, P < 0.05 and r = 0.55, P < 0.05, respectively). There was no significant correlation between the BMI reduction and the baseline variables of fat distribution, nor between the BMI reduction and the basal RMR. Weight loss was accompanied by modifications of fat distribution. In particular, the reduction of VFA after surgery was strictly related to the VFA values at baseline (r = 0.91, P < 0.001). Weight loss induced a significant reduction of RMR (7.96 +/- 1.77 vs 6.57 +/- 6.90 MJ/day; P < 0.01). The reduction of the RMR observed with weight loss was significantly related to the FFM loss (r = 0.63, P < 0.05), whereas no correlations were found between the changes of RMR and the FM loss. Regarding to fat distribution, the reduction of the RMR was significantly related to the visceral fat loss (r = 0.57, P < 0.05), but not to the modifications of total or subcutaneous fat area. The independent contribution of the modifications of FFM, FM, and visceral fat to the changes of RMR was analyzed by multiple regression analysis. In this model, both FFM and visceral fat changes resulted independently related to the RMR. CONCLUSIONS: (1) visceral fat accumulation was a significant predictor of RMR in the very obese woman; (2) visceral obese women lost more visceral fat than subcutaneous ones; (3) the reduction of the RMR observed during weight loss could partly be explained by a reduction of visceral fat mass.


Asunto(s)
Tejido Adiposo/anatomía & histología , Metabolismo Energético/fisiología , Metabolismo de los Lípidos , Obesidad Mórbida/metabolismo , Estómago/cirugía , Adulto , Antropometría , Metabolismo Basal/fisiología , Composición Corporal/fisiología , Índice de Masa Corporal , Calorimetría , Impedancia Eléctrica , Femenino , Humanos , Procesamiento de Imagen Asistido por Computador , Persona de Mediana Edad , Obesidad Mórbida/cirugía , Siliconas , Tomografía Computarizada por Rayos X , Vísceras , Pérdida de Peso/fisiología
16.
Obes Surg ; 5(1): 71-73, 1995 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-10733797

RESUMEN

BACKGROUND: the authors describe a laparoscopic technique for the positioning of stoma adjustable silicone gastric banding (SASGB), which respects the main steps of the open procedure. METHODS: (1) patient position: supine with thighs abducted and 30 degrees reverse Trendelenburg; (2) Four 10 mm trocars (supra-umbilical, sub-xiphoid, right upper quadrant, left upper quadrant) and an 18 mm trocar (left subcostal); (3) exposure of the subcardial area; (4) measurement of the pouch; (5) dissection of the lesser and greater curvatures; (6) retrogastric tunnel; (7) introduction and placement of the band; (8) band closure and stoma calibration; (9) retention sutures. RESULTS: results obtained in a first (1992) series of five patients who underwent the laparoscopic application of the regular SASGB and results of a second series (1993-1994) of seven patients in whom the new LAP-ASGB was utilized are reported. CONCLUSION: this new approach can represent a major achievement in bariatric surgery, as it combines the minimal invasiveness of the laparoscopic approach with the reversibility of SASGB.

17.
Obes Surg ; 4(3): 274-278, 1994 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-10742786

RESUMEN

From April 1990 through December 1992, 111 patients (80 females, 31 males, mean age 38 years, range 16-60) underwent stoma adjustable silicone gastric banding (SASGB) at the Department of Surgery, University Hospital, Padua, Italy. Patients' characteristics were: mean height 166 +/- 8 cm; mean body weight (BW) 129.1 +/- 21.6 kg; mean body mass index (BMI) 46.4 +/- 6.3 kg/m(2); mean percentage of ideal body weight (%IBW) 206.2 +/- 27. Eighty-eight patients were morbidly obese and 23 superobese. All patients were available for follow-up. Median follow-up was 18.8 months (range 12-44). At I year (I 03 patients), mean postoperative BW, BMI, %IBW and excess weight lost (%EWL) were 101.5 +/- 20 kg, 36.5 +/- 6 kg/m(2), 164 +/- 30 and 40.8 +/- 19 respectively; at 2 years (58 patients) 92.3 +/- 19 kg, 33.1 +/- 6 kg/m(2), 148.8 +/- 28, 52 +/- 23, respectively, and at 3 years (26 patients) 86.9 +/- 14 kg, 31.4 +/- 5 kg/m(2), 141.5 +/- 25 and 63.6 +/- 20 respectively. The overall postoperative mortality rate was zero and the early morbidity rate 9%. Late complications were band slippage (two patients), stoma stenosis with pouch dilatation (seven patients), band erosion (one patient), reservoir leakage (three patients) and reservoir infection (two patients). Surgical revision was performed in ten (9%) patients, two of whom required band removal. Most complications occurred in patients who underwent SASGB during our initial experience. Our findings confirm that SASGB is a safe and effective surgical means of achieving weight reduction.

18.
Eur J Surg Oncol ; 19(4): 355-60, 1993 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-8395410

RESUMEN

We here report on our 10-year experience of surgery in 25 patients with primary retroperitoneal sarcoma and make an appraisal of the more effective available clinical approach. Ten patients had leiomyosarcoma, eight liposarcoma, and seven had other tumor types. Histological grading was G1 in seven patients, G2 in six patients and G3 in 12. Ten patients (40%) underwent wide tumor excision, five (20%) marginal excision, four (16%) partial excision and six (24%) wedge biopsy at laparotomy. Adjacent organ resection was required in 10 of the 15 patients who underwent wide or marginal resection, seven of whom had adjuvant chemoradiotherapy. After wide resection, local recurrences were observed in 2/10 patients; the 10-year survival rate was 33%. Three out of five patients who underwent marginal resection had local recurrences; one is alive 10 years after surgery and chemo-radiotherapy. Histological grading was the most important prognostic factor. Radical resection is the only effective available treatment for retroperitoneal sarcomas, and patients with low-grade tumors benefit most from it with respect to survival and local recurrence rate. The efficacy of adjuvant treatment has yet to be clarified.


Asunto(s)
Neoplasias Retroperitoneales/cirugía , Sarcoma/cirugía , Adulto , Anciano , Quimioterapia Adyuvante , Femenino , Histiocitoma Fibroso Benigno/cirugía , Humanos , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia , Neurilemoma/cirugía , Neoplasias Retroperitoneales/tratamiento farmacológico , Neoplasias Retroperitoneales/patología , Sarcoma/tratamiento farmacológico , Sarcoma/secundario , Análisis de Supervivencia
19.
Obes Surg ; 3(1): 53-56, 1993 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-10757905

RESUMEN

Adjustable silicone gastric banding (ASGB) is a recently introduced gastric restrictive procedure. From April 1990 to April 1992, 85 patients underwent ASGB at our Department. Patients' characteristics were: 65 females, 20 males, mean age 39.6 years (range 17-60 years); body weight (BW) 127.9 +/- 23 kg; % ideal body weight (%IBW) 205 +/- 29; body mass index (BMI) 46 +/- 7; morbidly obese 68, super-obese 17. Mean follow-up is 353 days. Twelve months after the operation BW was 95.2 +/- 23 kg, % loss of excess BW 52.1 +/- 22, and % IBW 152.2 +/- 30 (45 patients). Mortality rate was zero and postoperative morbidity was insignificant. As late morbidity, we experienced two slippages of the band and six stoma-stenosis with pouch dilatation. Therefore, a surgical revision without removal of the band was performed in eight patients. The band was removed in one patient because of band erosion. In conclusion, ASGB is a safe and effective bariatric procedure. The weight loss is comparable to that produced by more extensive operations. Moreover, ASGB is fully reversible and adjustable to the patients' needs.

20.
Anticancer Res ; 11(4): 1635-40, 1991.
Artículo en Inglés | MEDLINE | ID: mdl-1746920

RESUMEN

From 1980 to 1987, 243 evaluable patients with pT1, pT2 (less than 3 centimeters in diameter), N0, M0, invasive breast cancer were treated with "quadrantectomy" with axillary dissection followed by electron beam radiation therapy (QUART) at the St. Bortolo Hospital, Vicenza. Stage II patients received adjuvant chemotherapy (CMF) if preperimenopausal or hormonotherapy (tamoxifen) if postmenopausal. The median follow-up was 54 months (26 to 116 months). The 4.5-year overall survival (OS) and disease-free survival (DFS) were respectively 91% and 85%; the 10-year actuarially estimated OS and DFS was 77%. Thirty-three patients relapsed, 11 of whom had local recurrence, and 23 developed distant metastases. A significantly longer OS and DFS were observed in stage I versus stage II (p = 0.0008) and in pT1 versus pT2 (p = 0.001) tumors. No difference was found regarding menopausal status and histotype. The local control of disease was very high (95.5%), with a significantly higher local recurrence rate in premenopausal women compared to postmenopausal (10/117 versus 1/126; p = 0.009). Tumor size did not influence the frequency of local recurrence. No major complications occurred but a significantly higher rate of reversible radiation-pneumonitis occurred in patients treated with higher energies of electrons (17 to 20 MeV) compared with lower (6 to 13 MeV) (33/177 versus 7/66; p less than 0.05). Cosmetic results were judged as excellent in 20%, satisfactory in 68%, unsatisfactory in 6% and not evaluable in 6% of cases. We conclude first, that small pT2 breast carcinomas may also be safely treated with QUART, second, that the electron beam is a radiotherapeutic technique able to produce a good cosmetic result and to assure a satisfactory local control and, finally, that the use of tamoxifen in postmenopausal stage II breast carcinomas is safe and easy to combine with radiotherapy in the conservative management of early breast cancer due to the lower toxic effects, compared to those observed in premenopausal women treated with chemotherapy.


Asunto(s)
Neoplasias de la Mama/radioterapia , Neoplasias de la Mama/cirugía , Anciano , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias de la Mama/tratamiento farmacológico , Neoplasias de la Mama/patología , Terapia Combinada , Ciclofosfamida/administración & dosificación , Femenino , Fluorouracilo/administración & dosificación , Estudios de Seguimiento , Humanos , Mastectomía Segmentaria , Menopausia , Metotrexato/administración & dosificación , Metástasis de la Neoplasia , Estadificación de Neoplasias , Tamoxifeno/uso terapéutico
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